                                  United States Court of Appeals,

                                         Eleventh Circuit.

                                           No. 95-6234.

CITY OF TUSCALOOSA; Municipal Utilities Board of Albertville, et al., Plaintiffs-Appellants,

   Auburn Water Works Board; Jasper Water Works and Sewer Board, Inc., et al., Plaintiffs-
Intervenors-Appellants,

                                                 v.

       HARCROS CHEMICALS, INC.; Jones Chemicals, Inc., et al., Defendants-Appellees.

                                           Oct. 23, 1998.

Appeal from the United States District Court for the Northern District of Alabama. (No. CV92-G-
1614-S), J. Foy Guin, Jr., Senior District Judge.

Before TJOFLAT and COX, Circuit Judges, and WELLFORD*, Senior Circuit Judge.

        TJOFLAT, Circuit Judge:

        In the instant case, thirty-nine Alabama municipal entities brought suit in the United States

District Court for the Northern District of Alabama, alleging that five defendant chemical companies

engaged in a conspiracy to fix prices for repackaged chlorine in Alabama in violation of both federal

and state antitrust law. The plaintiffs also asserted claims for fraud under Alabama law. In a

memorandum opinion, the district court ruled much of the plaintiffs' evidence inadmissible and

granted summary judgment to all five defendants on the antitrust claims and the fraud claims. See

City of Tuscaloosa v. Harcros Chems., Inc., 877 F.Supp. 1504 (N.D.Ala.1995). We review the

district court's evidentiary rulings, reversing in part and affirming in part. We then review the

district court's summary judgment rulings. We reverse the district court's entry of summary



   *
    Honorable Harry W. Wellford, Senior U.S. Circuit Judge for the Sixth Circuit, sitting by
designation.
judgment with regard to three of the five defendants on the antitrust claims, and remand for further

proceedings. We also vacate the district court's entry of summary judgment on most of the fraud

claims, and remand for further proceedings.

                                                 I.

                                                A.

       The plaintiffs and plaintiffs-intervenors in this case are thirty-nine Alabama municipal

entities that purchase repackaged chlorine for the treatment of drinking water, sewage, and

swimming pools. Repackaged chlorine is liquid chlorine that has been pressurized and stored in

containers for delivery to, and use by, chlorine consumers. The five defendant corporations are

chemical companies that repackage or distribute chlorine in Alabama.1


   1
   Defendant Harcros Chemicals, Inc., is a chlorine repackager organized under the laws of
Delaware with its principal place of business in Kansas. Harcros was formerly known as
Thompson-Hayward Chemical Co. For purposes of this opinion both Thompson-Hayward and
Harcros will be referred to as "Harcros."

              Defendant Van Waters & Rogers, Inc., is a chlorine repackager organized under
       the laws of the State of Washington with its principal place of business in Washington.
       In 1986, Van Waters & Rogers acquired the Moreland-McKesson Chemical Company.
       For purposes of this opinion, both companies are referred to as "Van Waters."

              Defendant Jones Chemicals, Inc., is a chlorine repackager organized under the
       laws of the State of New York with its principal place of business in New York.

              Defendant PB & S Chemical Company, Inc., is a chlorine repackager organized
       under the laws of the State of Kentucky with its principal place of business in Kentucky.

             Defendant Industrial Chemicals, Inc., a chlorine distributor for defendants Jones
       Chemicals and PB & S Chemical Company, is organized under the laws of the State of
       Alabama with its principal place of business in Alabama.

               The repackaging, distribution and sale of chlorine in Alabama takes place within
       the flow of interstate commerce, as is necessary for the plaintiffs to bring this action. See
       infra notes 5-7. Chlorine is imported into Alabama for repackaging and is then

                                                 2
       At the core of the plaintiffs' claims are their allegations that the defendants colluded with

each other to set prices for repackaged chlorine distribution contracts. During the period of the

alleged collusion, many Alabama municipal entities purchased chlorine by auction.2 An entity

seeking to purchase chlorine would solicit sealed bids from companies that had submitted bids in

the past. Once the bids were received, the buyer would publicly open the bids and announce what

each competitor had bid. The buyer would then award its contract to the lowest bidder. The

plaintiffs allege that the defendants submitted sealed bids based on "list prices" previously

determined amongst themselves, and in this way allocated the repackaged chlorine contracts as they

wished.

       Following investigations of the chlorine industry in the Southeast by the United States

Department of Justice and the State of Florida,3 Alabama's former Attorney General requested

authority from a number of Alabama municipal entities to bring an antitrust action against chlorine

companies on their behalf. His successor, however, changed course and declined, on behalf of the

state, to participate in the proposed litigation. See Harcros, 877 F.Supp. at 1511 n. 19.

       Fifteen Alabama municipal entities then decided to proceed independently and brought this

action in July 1992. Numerous other municipal entities intervened, and several original plaintiffs



       distributed and sold to Alabama municipal entities and to other customers in Alabama
       and elsewhere.
   2
    A minority of municipal entities negotiated chlorine prices with one or more suppliers.
   3
    The Justice Department convened a grand jury to investigate the chlorine industry, including
the defendants and others, but eventually dropped its investigation. Florida's separate
investigation yielded two federal antitrust suits: the "peninsula" case, filed in Jacksonville, and
the "panhandle" case, filed in Pensacola. The district court assigned to the "panhandle" case
announced that it would grant defendants' motion for summary judgment, at which point the
State of Florida agreed to settle both cases. See Harcros, 877 F.Supp. at 1511.

                                                 3
withdrew from the case. The complaints filed by the final thirty-nine plaintiffs,4 as amended,

presented four counts. The first count alleged that the defendants had engaged in a conspiracy to

fix prices, allocate customers or markets, and rig bids in violation of section 1 of the Sherman Act,

15 U.S.C. § 1 (1994).5 The second count asserted that the defendants had engaged in a conspiracy

to monopolize the chlorine market in Alabama in violation of section 2 of the Sherman Act, 15

U.S.C. § 2 (1994).6 The plaintiffs sought treble damages as relief on these federal antitrust claims

pursuant to section 4 of the Clayton Act, 15 U.S.C. § 15 (1994), and requested a permanent




   4
   The plaintiffs and plaintiffs-intervenors did not consolidate their two complaints into one.
The two complaints, however, are largely identical.
   5
    Section 1 provides:

               § 1. Trusts, etc., in restraint of trade illegal; penalty

               Every contract, combination in the form of trust or otherwise, or conspiracy, in
               restraint of trade or commerce among the several States, or with foreign nations,
               is hereby declared to be illegal. Every person who shall make any contract or
               engage in any combination or conspiracy hereby declared to be illegal shall be
               deemed guilty of a felony, and, on conviction thereof, shall be punished by fine
               not exceeding $10,000,000 if a corporation, or, if any other person, $350,000, or
               by imprisonment not exceeding three years, or by both said punishments, in the
               discretion of the court.
   6
    Section 2 provides:

               § 2. Monopolizing trade a felony; penalty

               Every person who shall monopolize, or attempt to monopolize, or combine or
               conspire with any other person or persons, to monopolize any part of the trade or
               commerce among the several States, or with foreign nations, shall be deemed
               guilty of a felony, and, on conviction thereof, shall be punished by fine not
               exceeding $10,000,000 if a corporation, or, if any other person, $350,000, or by
               imprisonment not exceeding three years, or by both said punishments, in the
               discretion of the court.

                                                   4
injunction preventing future collusion pursuant to section 16 of the Clayton Act, 15 U.S.C. § 26

(1994).7

       The third count of the complaints asserted that the defendants conspired to restrain trade in

violation of Alabama Code § 8-10-1 et seq. (1993). The plaintiffs sought actual damages and $500

in statutory liquidated damages for each instance of injury or damage resulting from the alleged

conspiracy pursuant to Alabama Code § 6-5-60 (1993).8 The fourth count of the plaintiffs'


   7
    Section 4 of the Clayton Act provides in relevant part:

               [A]ny person who shall be injured in his business or property by reason of
               anything forbidden in the antitrust laws may sue therefor in any district court of
               the United States in the district in which the defendant resides or is found or has
               an agent, without respect to the amount in controversy, and shall recover threefold
               the damages by him sustained, and the cost of suit, including a reasonable
               attorney's fee.

       Section 16 of the Clayton Act provides in relevant part:

               Any person, firm, corporation, or association shall be entitled to sue for and have
               injunctive relief, in any court of the United States having jurisdiction over the
               parties, against threatened loss or damage by a violation of the antitrust laws,
               including sections 13, 14, 18, and 19 of this title, when and under the same
               conditions and principles as injunctive relief against threatened conduct that will
               cause loss or damage is granted by courts of equity[.]
   8
   Price-fixing conspiracies are made unlawful by §8-10-3 of the Alabama Code, which
provides:

               §8-10-3 Restraint of trade or production; misdemeanor.

               Any person or corporation, domestic or foreign, which shall restrain, or attempt to
               restrain, the freedom of trade or production, or which shall monopolize, or
               attempt to monopolize, the production, control, or sale of any commodity or the
               prosecution, management, or control of any kind, class, or description of business
               or which shall destroy, or attempt to destroy, competition in the manufacture or
               sale of a commodity shall be guilty of a misdemeanor and, upon conviction, shall
               be fined not less than $500 nor more than $2,000 for each offense.


                                                5
complaints asserted fraud claims under Alabama law. See Ala.Code § 6-5-100 et seq. (1993). The

plaintiffs sought compensatory and punitive damages for these claims.

       After discovery, the defendants moved to exclude the testimony of two of the plaintiffs' three

expert witnesses, and to exclude several pieces of evidence that they asserted were inadmissible

hearsay. The defendants also moved for summary judgment.

       The district court, in a lengthy memorandum opinion, excluded the purported hearsay

testimony, see Harcros, 877 F.Supp. at 1518-21, 1538, and much of the plaintiffs' expert testimony.

See id. at 1524-30, 1532. The district court then granted summary judgment for the defendants on

all claims. See id. at 1521-24, 1532-38. The plaintiffs now appeal, asserting that the district court

improperly excluded their proffered evidence and that summary judgment was erroneously entered.



       Section 6-5-60(a) provides:

               §6-5-60 Generally.

               (a)Any person, firm, or corporation injured or damaged by an unlawful trust,
               combine or monopoly, or its effect, direct or indirect, may, in each instance of
               such injury or damage, recover the sum of $500 and all actual damages from any
               person, firm, or corporation creating, operating, aiding, or abetting such trust,
               combine, or monopoly and may commence the action therefor against any one or
               more of the parties to the trust, combine, or monopoly, or their attorneys, officers,
               or agents, who aid or abet such trust, combine, or monopoly. All such actions may
               be prosecuted to final judgment against any one or more of the defendants thereto,
               notwithstanding there may be a dismissal, acquittal, verdict, or judgment in favor
               of one or more of the defendants.

               Under Alabama law, federal antitrust law "prescribe[s] the terms of unlawful
       monopolies and restraints of trade as they should...be administered in Alabama." Ex parte
       Rice, 67 So.2d 825, 829, 259 Ala. 570 (Ala. 1953); see also McCluney v. Zap Prof'l
       Photography, 663 So.2d 922, 926 (Ala.1995)(citing Rice for the proposition that federal
       law relating to monopolization governs actions brought under section 6-5-60). Our
       discussion of the relevant federal law, see infra part III, therefore applies to and controls
       our disposition of the plaintiffs' state-law antitrust claims as well as their federal antitrust
       claims.

                                                  6
                                                  B.

        We first review the district court's rulings on the admissibility of the purported hearsay

evidence. Rulings on the admissibility of evidence are reviewed for abuse of discretion. See Walker

v. NationsBank of Fla. N.A., 53 F.3d 1548, 1554 (11th Cir.1995) ("The admissibility of evidence is

committed to the broad discretion of the district court, and the decision to exclude certain evidence

will be reversed only upon a clear showing of abuse of discretion."); see also Hines v. Brandon

Steel Decks, Inc., 886 F.2d 299, 302 (11th Cir.1989) (applying abuse of discretion standard to

hearsay admissibility determination). "A district court by definition abuses its discretion when it

makes an error of law." Koon v. United States, 518 U.S. 81, 100, 116 S.Ct. 2035, 2047, 135 L.Ed.2d

392 (1996). Thus, when the district court misinterprets the Federal Rules of Evidence or controlling

case law, our review is plenary. Cf. Joiner v. General Elec. Co., 78 F.3d 524, 529 (11th Cir.1996),

rev'd on other grounds, 522 U.S. 136, 118 S.Ct. 512, 139 L.Ed.2d 508 (1997).

         The factual findings of the district court that underlie its decisions regarding the

admissibility of the purported hearsay evidence—such as its findings regarding whether a statement

was made in furtherance of a conspiracy, or whether a particular document is a regular business

record—are reviewed for clear error. See United States v. Bazemore, 41 F.3d 1431, 1434 (11th

Cir.1994); United States v. Turner, 871 F.2d 1574, 1581 (11th Cir.1989). A finding of fact is

clearly erroneous when, after reviewing the entirety of the evidence, the reviewing court "is left with

the definite and firm conviction that a mistake has been committed." Anderson v. City of Bessemer

City, 470 U.S. 564, 573, 105 S.Ct. 1504, 1511, 84 L.Ed.2d 518 (1985) (quoting United States v.

United States Gypsum Co., 333 U.S. 364, 395, 68 S.Ct. 525, 542, 92 L.Ed. 746 (1948)).




                                                  7
        After reviewing the district court's rulings on the admissibility of the purported hearsay

evidence, we turn to that court's rulings on the admissibility of the plaintiffs' expert testimony. The

Supreme Court recently has clarified the standard of review applicable to appellate consideration

of determinations regarding the admissibility of expert testimony. See General Elec. Co. v. Joiner,

522 U.S. 136, 118 S.Ct. 512, 139 L.Ed.2d 508 (1997), rev'g 78 F.3d 524, 529 (11th Cir.1996). In

Joiner, the Court noted that a district court's evidentiary rulings are reviewed for abuse of discretion.

See id. at ----, 118 S.Ct. at 517. The Court then held that Daubert v. Merrell Dow Pharmaceuticals,

Inc., 509 U.S. 579, 113 S.Ct. 2786, 125 L.Ed.2d 469 (1993), did not alter this long-standing rule in

the specific context of expert testimony, and in fact did not address the standard of appellate review

of such rulings at all. See Joiner, --- U.S. at ----, 118 S.Ct. at 517. The Court went on to note that

a court of appeals should apply this abuse of discretion standard of review uniformly, without regard

to whether the district court ruling under review allowed or disallowed the expert testimony at issue.

Id. We therefore review the district court's rulings excluding the plaintiffs' expert testimony for

abuse of discretion. To the extent that a ruling of the district court turns on an interpretation of a

Federal Rule of Evidence or on the court's decision to apply Daubert, however, our review is

plenary. See Joiner v. General Elec. Co., 78 F.3d at 529, rev'd on other grounds, --- U.S. ----, 118

S.Ct. 512, 139 L.Ed.2d 508 (1997); Carmichael v. Samyang Tire, Inc., 131 F.3d 1433, 1435 (11th

Cir.1997), cert. granted sub nom. Kumho Tire Co. v. Carmichael, --- U.S. ----, 118 S.Ct. 2339, 141

L.Ed.2d 711 (1998).

        Having examined the district court's evidentiary rulings, we finally proceed to review the

district court's entry of summary judgment on the basis of the admissible evidence. This review

proceeds de novo. See Southern Card & Novelty, Inc. v. Lawson Mardon Label, Inc., 138 F.3d 869,


                                                   8
873 (11th Cir.1998); Uniforce Temp. Personnel, Inc. v. National Council on Compensation Ins.,

Inc., 87 F.3d 1296, 1299 (11th Cir.1996). "Summary judgment is proper "if the pleadings,

depositions, answers to interrogatories, and admissions on file, together with the affidavits, if any,

show that there is no genuine issue as to any material fact and that the moving party is entitled to

judgment as a matter of law.' " Celotex Corp. v. Catrett, 477 U.S. 317, 322, 106 S.Ct. 2548, 2552,

91 L.Ed.2d 265 (1986) (quoting Fed.R.Civ.P. 56(c)). "The party seeking summary judgment [must]

identify[ ] for the district court those portions of the record "which it believes demonstrate the

absence of a genuine issue of material fact'." Cohen v. United Am. Bank of Cent. Fla., 83 F.3d 1347,

1349 (11th Cir.1996) (quoting Cox v. Administrator United States Steel & Carnegie 17 F.3d 1386,

1396 (11th Cir.1994) (in turn quoting Celotex Corp., 477 U.S. at 323, 106 S.Ct. at 2552)). "There

is no genuine issue for trial unless the non-moving party establishes, through the record presented

to the court, that it is able to prove evidence sufficient for a jury to return a verdict in its favor."

Cohen, 83 F.3d at 1349.

                                                  II.

                                                  A.

       We consider first the district court's rulings regarding the admissibility of testimony that the

defendants moved to exclude as inadmissible hearsay. We reverse in part and affirm in part.

                                                  1.

        The plaintiffs proffered testimony regarding an alleged admission by the late Robert Jones

("Jones"), the former chairman, chief executive officer, and president of defendant Jones Chemicals.

Loraine and Peter Cassassa, friends of Jones during the period of the alleged conspiracy, testified

in depositions that on several occasions in the mid-1980s, Jones admitted to them that he was at that


                                                   9
time involved in fixing chlorine prices in the Southeast. Loraine Cassassa testified that Jones told

her that he "got together with the people [who were] submitting the bids and they knew what each

other were going to bid before that bid was ever submitted." She also testified that Jones told her

that he knew such conduct was illegal, but that "[t]hat's how big business goes." Peter Cassassa gave

substantially identical testimony.

       The district court excluded the testimony of the Cassassas as "hearsay." See infra note 10;

Harcros, 877 F.Supp. at 1518-19, 1538. We conclude that the court erred as a matter of law by

making this determination and therefore abused its discretion. Accordingly, we reverse the ruling

excluding that testimony.

       Under the Federal Rules of Evidence, " "[h]earsay' is a statement, other than one made by

the declarant while testifying at the trial or hearing, offered in evidence to prove the truth of the

matter asserted." Fed.R.Evid. 801(c). In general, "[h]earsay is not admissible except as provided

by [the federal] rules...." Fed.R.Evid. 802. A "statement by [a] party's agent or servant concerning

a matter within the scope of the agency or employment, made during the existence of the

relationship," however, is deemed an admission by a party opponent and is excluded from the

definition of hearsay. Fed.R.Evid. 801(d)(2)(D); see Zaben v. Air Prods. & Chems., Inc., 129 F.3d

1453, 1456 (11th Cir.1997).

        Robert Jones, as president of Jones Chemicals from 1986 to 1989, and as the chairman and

CEO of the company from 1986 to 1993, clearly was an "agent or servant" of the company.9


   9
    Because Fed.R.Evid. 801(d)(2)(D) does not define the term "agent," we must assume that
Congress intended to refer to general common law principles of agency when it used the term.
See United States v. Saks, 964 F.2d 1514, 1523-24 (5th Cir.1992) (citing Community for
Creative Non-Violence v. Reid, 490 U.S. 730, 109 S.Ct. 2166, 2172-73, 104 L.Ed.2d 811
(1989)). At common law, senior officers of a corporation normally are agents and servants of

                                                 10
Moreover, the record on appeal establishes that Jones set chlorine prices for Jones Chemicals

throughout the period of the alleged conspiracy. His purported statements regarding Jones

Chemical's chlorine pricing practices thus "concern[ed] a matter within the scope of [his] agency or

employment, made during the existence of the relationship." See, e.g., Guccione v. Hustler

Magazine, Inc., 632 F.Supp. 313, 320 (S.D.N.Y.), rev'd on other grounds, 800 F.2d 298 (2d

Cir.1986) (statements made by chief executive officer of defendant corporation, within scope of his

authority, held admissible). Jones' purported statements to the Cassassas are therefore admissible

as non-hearsay party admissions under Fed.R.Evid. 801(d)(2)(D).10



the corporation. See 2A C.J.S. Agency § 4 (1972) ("An agent is ... a person employed or
authorized by another to act for him, or to transact business for him[, or] one entrusted with
another's business ....") (citing cases); Restatement (Second) of Agency § 2 cmt. c (1958) ("[T]he
officers of a corporation or a ship, ... all of whom give their time to their employers, are servants
equally with the janitor."); see also, e.g., Shelter Modular Corp. v. Cardinal Enters., Inc., 347
So.2d 1334, 1338 (Ala.1977) (vice-president of corporation is agent thereof); Ex parte Board of
Sch. Comm'rs of Mobile County, 235 Ala. 82, 178 So. 63, 64 (Ala.1937) ("It is the general rule
of the common law that the relationship of master and servant exists whenever the employer
retains the right to direct the manner in which the business shall be done, as well as the result to
be accomplished, or, in other words, not only what shall be done, but how it shall be done.").
   10
     The district court found the testimony inadmissible as to Jones on two grounds: (1) that "the
president of a corporation is not the "alter ego' of the corporation," and that Jones therefore did
not "speak for" the corporation, as the court believed was required by controlling Alabama
evidence law; and (2) that the purported statements did not fall under the co-conspirator hearsay
exception found in Fed.R.Evid. 801(d)(2)(E). See Harcros, 877 F.Supp. at 1518-19. Both of
these rulings are in error.

                First, it is well settled that the Federal Rules of Evidence, not state evidence law,
        govern the admissibility of evidence in cases in federal court. See Fed.R.Evid. 1101;
        Johnson v. William C. Ellis & Sons Iron Works, Inc., 609 F.2d 820, 821 (5th Cir.1980).
        Under the Federal Rules, "it is [not] necessary to show that an employee or agent
        declarant possesses "speaking authority,' tested by the usual standards of agency law,
        before a statement can be admitted against the principal." Wilkinson v. Carnival Cruise
        Lines, Inc., 920 F.2d 1560, 1565 (11th Cir.1991). Instead, it is necessary that the content
        of the declarant's statement concern a matter within the scope of his employment or
        agency. See Fed.R.Evid. 801(d)(2)(D); Wilkinson, 920 F.2d at 1565. The district court

                                                 11
        The appellants argue that the Cassassas' testimony ought also to be admitted against the

other defendants, on the ground that Jones' purported statements were made "during the course and

in furtherance of the conspiracy" and therefore fall within the exemption contained in Rule

801(d)(2)(E). Declarations by one defendant in a conspiracy case may be admissible against other

defendants as non-hearsay upon sufficient showing that the statement was made by a co-conspirator

during the course and in furtherance of the conspiracy. See Fed.R.Evid. 801(d)(2)(E); Bourjaily

v. United States, 483 U.S. 171, 175-76, 107 S.Ct. 2775, 2778-79, 97 L.Ed.2d 144 (1987); United

States v. Young, 39 F.3d 1561, 1571 (11th Cir.1994). "For a declaration by one defendant to be

admissible against other defendants ..., the [plaintiffs] must establish by a preponderance of the

evidence: (1) that a conspiracy existed, (2) that the defendant and the declarant were members of

the conspiracy, and (3) that the statement was made during the course and in furtherance of the

conspiracy." United States v. Van Hemelryck, 945 F.2d 1493, 1497-98 (11th Cir.1991); see also,

e.g., United States v. Byrom, 910 F.2d 725, 734 (11th Cir.1990); United States v. Allison, 908 F.2d

1531, 1533 (11th Cir.1990) (citing Bourjaily, 483 U.S. at 175, 107 S.Ct. at 2778-79). In determining

the admissibility of co-conspirator statements, the court may consider both the co-conspirator's

hearsay statement and independent external evidence. See Bourjaily, 483 U.S. at 181, 107 S.Ct. at

2781; United States v. Chestang, 849 F.2d 528, 531 (11th Cir.1988).



       therefore erred as a matter of law in holding otherwise.

               Second, Rule 801(d)(2)(E) establishes that "a statement by a coconspirator of a
       party during the course and in furtherance of the conspiracy" is non-hearsay evidence.
       Fed.R.Evid. 801(d)(2)(E). As discussed below, we agree with the district court's
       conclusion that Jones' purported statements were not made "during the course and in
       furtherance of the conspiracy." That the Cassassas' testimony is not made admissible by
       Rule 801(d)(2)(E), however, does not change the fact that the testimony is admissible as
       a party admission under Rule 801(d)(2)(D).

                                                12
        This circuit applies "a liberal standard in determining whether a statement is made in

furtherance of a conspiracy." United States v. Santiago, 837 F.2d 1545, 1549 (11th Cir.1988). The

statement need not be necessary to the conspiracy, but must only further the interests of the

conspiracy in some way. See United States v. Caraza, 843 F.2d 432, 436 (11th Cir.1988) (per

curiam). Statements made to solicit membership or participation in the conspiracy, for example, see

United States v. Montes-Cardenas, 746 F.2d 771, 780 (11th Cir.1984), or statements explaining the

conspiracy to a new member, see United States v. Reyes, 798 F.2d 380, 384 (10th Cir.1986), are

made in furtherance of the conspiracy. The determination of whether a statement is made in

furtherance of a conspiracy is a finding of fact subject to review for clear error. See United States

v. Ayarza-Garcia, 819 F.2d 1043, 1050 (11th Cir.1987).

         Jones' purported statements do not satisfy even this liberal standard. The purported

statements were made to friends, who were neither involved in the alleged conspiracy nor invited

to participate therein, over drinks or on the golf course. The statements could not have furthered the

interests of the alleged conspiracy in any way. A statement that merely discloses the existence of

a conspiracy to a non-conspirator, that merely "spills the beans," with no intention of recruiting the

auditor into the conspiracy does not further the conspiracy. See United States v. Posner, 764 F.2d

1535, 1538 (11th Cir.1985) (holding that a letter written by a co-conspirator, containing preliminary

appraisals of real estate, was not made in furtherance of a conspiracy to overvalue the real estate and

thus was not admissible as the statement of a co-conspirator because the letter was not written to

conceal the conspiracy and served only to disclose the scheme); see also United States v. Moss, 138

F.3d 742, 744 (8th Cir.1998) (holding that "[a] statement made in furtherance of a conspiracy "must




                                                  13
somehow advance the objectives of the conspiracy, not merely inform the listener of the declarant's

activities,' " in order to be admissible under Rule 801(d)(2)(E) (citation omitted)).

        We conclude that the district court did not err in finding that Jones' purported statements

were not made in furtherance of the alleged conspiracy, and that the Cassassas' testimony is

therefore not admissible against the alleged co-conspirators. Because Jones' purported statements

were non-hearsay party admissions, however, we conclude that the statements do fall within the

exception contained in Rule 801(d)(2)(D), and that the Cassassas' testimony is therefore admissible

against Jones Chemicals.

                                                 2.

        The district court also excluded as inadmissible hearsay a typewritten notation on a bid

tabulation compiled by one of the appellant municipal entities, the Board of the Mobile Water and

Sewer Commission. The bid tabulation lists the bids received by Mobile for a chlorine contract in

April of 1987, and shows that Industrial Chemicals and Jones Chemicals submitted tie bids for the

contract in question. The typewritten notation on the bid tabulation sheet, which appears next to the

Industrial bid, reads: "This is a complimentary bid for Jones. As per O.W. Caine, Sales Manager,

pass contract on to Jones Chem." Caine was a sales manager for Industrial. The appellants assert

that this notation reflects Caine's, and hence Industrial's, intention to forgo the Mobile contract in

order to maintain the distribution of contracts established by the alleged conspiracy.11



   11
     The plaintiffs assert that complimentary bids, i.e., bids submitted with no intention of
winning the contract in question, were used by the defendants to create the illusion of
competition in the Alabama chlorine market. The defendants reply that, because municipal
entities often would solicit bids only from companies that had bid on previous contracts,
complimentary bids were used merely to stay in the running for future contracts when, for
whatever reason, a company did not wish, or was not able, to pursue a particular contract.

                                                 14
        The district court excluded the notation as hearsay, apparently on the ground that it did not

qualify as a party admission. See Harcros, 877 F.Supp. at 1520. We do not reach the question of

whether the district court erred in excluding the notation, because the notation adds nothing to

Caine's affidavit testimony, discussed infra, for purposes of summary judgment.12


   12
     The district court apparently excluded the Caine notation on the ground that it did not
qualify as a party admission under Rule 801(d)(2)(D); since Caine did not have final authority
over chlorine bids, the court viewed any statement by him regarding the Mobile bid in question
as "unauthorized." Harcros, 877 F.Supp. at 1520. As discussed in note 10, supra, the Federal
Rules of Evidence do not require that Caine have had "speaking authority" in order for his
statement to be admissible under the party admission exception; the district court's rationale was
therefore legally erroneous. We could not determine whether the Caine notation is actually
admissible as a party admission under Rule 801(d)(2)(D) even if it were necessary to do so,
however, because the writer of the notation has not been identified and the record on appeal does
not disclose whether the document was properly authenticated in the district court. The district
court excluded the notation without a hearing, solely on the basis of the parties' briefs.

               The plaintiffs also argued that the notation was admissible as a regular business
        record under Rule 803(6). Rule 803(6) provides an exception from the general
        prohibition on hearsay when the proffered statement is

               [a] memorandum, report, record, or data compilation, in any form, of acts, events,
               conditions, opinions, or diagnoses, made at or near the time by, or from
               information transmitted by, a person with knowledge, if kept in the course of a
               regularly conducted business activity, and if it was the regular practice of that
               business activity to make the memorandum, report, record, or data compilation,
               all as shown by the testimony of the custodian or other qualified witness, unless
               the source of information or the method or circumstances of preparation indicate
               lack of trustworthiness.

        Fed.R.Evid. 803(6). The district court apparently rejected this argument without
        comment, and the plaintiffs complain of this holding on appeal. On the basis of the
        inadequate record on appeal, the notation appears not to have been a properly
        authenticated regular business record. The notation is admissible under Rule 803(6) if it
        is "[a] memorandum [or] record ... of acts [or] events ... made at or near the time by, or
        from information transmitted by, a person with knowledge" of the acts in question, and
        "if it was the regular practice of the business activity to make the memorandum [or]
        record ... all as shown by the testimony of the custodian or other qualified witness, unless
        the source of the information or the method or circumstances of preparation indicate lack
        of trustworthiness." Fed.R.Evid. 803(6) (emphasis added). From the record on appeal,

                                                 15
       The district court also excluded an affidavit offered by Caine, and provided numerous

reasons for doing so. See Harcros, 877 F.Supp. at 1520. Portions of the affidavit, the court stated,

were "ambiguous" because "none of [the affidavit] testimony establish[ed] conspiracy." The court

also concluded that "[t]he other portions of Mr. Caine's affidavit add[ed] nothing" because they were

"inadmissible hearsay" and because the affidavit could not "stand alone."

        All of these grounds for excluding Caine's affidavit testimony are erroneous. Questions

regarding the weight of the affidavit testimony, such as whether the affidavit is "ambiguous," are

not matters for consideration by the court on summary judgment. The factfinder at trial will decide

whether to lend credence to the affidavit information. With regard to the portions of the affidavit




       the Caine notation appears not to satisfy the requirements of the business records
       exception because the record reveals no attempt whatsoever to authenticate the notation,
       as is explicitly required by Rule 803(6). See Fed.R.Evid. 803(6); United States v.
       Williams, 837 F.2d 1009, 1013 n. 6 (11th Cir.1988) (proper foundation for admission of
       803(6) testimony should include testimony of witness with personal knowledge of how
       document was compiled); Itel Capital Corp. v. Cups Coal Co., 707 F.2d 1253, 1259-60
       (11th Cir.1983) (person who actually prepared business record need not testify but other
       circumstantial evidence and testimony must suggest trustworthiness of documents);
       United States v. Dreer, 740 F.2d 18, 20 (11th Cir.1984) (proper foundation for admission
       of business record must sufficiently indicate reliability, including "circumstances
       surrounding the origin and the nature of the compilation"). The district court rejected the
       plaintiffs' invocation of the business records exception, however, in the same fashion that
       it rejected their reliance upon the party admission exception—on the basis of the parties'
       briefs alone. We therefore could not determine whether the district court erred in
       concluding that the Caine notation is not admissible under Rule 803(6), even if it were
       necessary to do so.

              We also note that, even if the notation is determined not to be admissible as
       hearsay, the notation might be admissible as non-hearsay insofar as it is not offered to
       prove the truth of the matter asserted. See Fed.R.Evid. 801. The Caine notation might be
       offered for several purposes other than to prove the truth of the matter asserted. The
       notation merely could not be offered to prove that Caine instructed the Mobile board to
       withdraw Industrial's bid; the appellants would have to rely on Caine's affidavit
       testimony and other evidence to support that proposition.

                                                 16
that the court ruled were "inadmissible hearsay," we believe the court erred in its determination. As

noted in part II.A.1, supra, " "[h]earsay' is a statement, other than one made by the declarant while

testifying at the trial or hearing, offered in evidence to prove the truth of the matter asserted."

Fed.R.Evid. 801(c). No part of Caine's affidavit fits this definition. Caine testifies in his affidavit

regarding the withdrawn Mobile bid, bidding practices at Industrial, and bidding practices at

Harcros—all matters in which he personally participated or which he personally observed. At no

point in the affidavit does Caine relate any statement made by anyone that constitutes inadmissible

hearsay.13 The district court therefore abused its discretion in excluding Caine's affidavit testimony.

Consequently, we conclude that this testimony is admissible in its entirety.


   13
      Two statements in the Caine affidavit may have been the cause of the district court's hearsay
concerns. In discussing a bid that he participated in submitting to the Mobile Water and Sewer
Board in 1987, while employed as a sales representative for Industrial in the Mobile/Dothan
area, Caine stated: "Mr. William Welch of Industrial Chemicals told me that, because there was
a tie bid and Jones was the incumbent, Industrial needed to bow out gracefully." The following
sentence of Caine's affidavit read: "I then communicated that information to Mrs. Whitworth [of
the Mobile Board]...."

                The alleged statement of Welch to Caine, however, constitutes a non-hearsay
        admission by a party opponent. See Fed.R.Evid. 801(d)(2)(D). Welch, as president of
        Industrial, was an agent of the company. In addition, since Welch stated in his deposition
        that he had sole responsibility for determining chlorine bid prices during a period that
        included 1987, his statement that Industrial should "bow out" of this particular chlorine
        bid concerned a matter within the scope of his agency and was made during the existence
        of that agency relationship. Cf. supra note 9 and accompanying text.

                 Caine's report of his past statement to Mrs. Whitworth also qualifies as a
        non-hearsay admission under Rule 801(d)(2)(D). Welch stated in his deposition that
        Caine was an Industrial sales representative who served the Mobile area during 1987. As
        such, Caine was an agent of Industrial when he communicated Welch's "bow out"
        directive to Mrs. Whitworth of the Mobile Board. Communicating a bid (or the
        withdrawal thereof) authorized by his supervisor to a prospective customer in the Mobile
        area surely was within the scope of Caine's agency as a sales representative for that area.
        We express no opinion on whether this statement would constitute inadmissible hearsay
        if it did not qualify as an admission.

                                                  17
                                                  3.

        The district court also excluded the testimony of Barbara Krysti, who offered testimony

against Harcros. See Harcros, 877 F.Supp. at 1520-21. Barbara Krysti is the widow of Lloyd

Krysti, who was a sales manager at Harcros. Barbara Krysti stated in an affidavit that

        [i]n 1987 or 1988, Lloyd found out that Joe Ragusa [ (Harcros' vice-president for the
        Southeast) ] was getting together with his competitors and fixing the price of chlorine before
        bids were submitted. Lloyd's reaction to me was that Joe was crazy for doing this and that
        it was illegal and that he could go to jail.... Lloyd first told me about the price fixing in
        1988. We talked about it several times after that.

        The proffered testimony is double hearsay; Barbara Krysti relates Lloyd Krysti's account

of what Joe Ragusa said.14 Such "hearsay included within hearsay is not excluded under the hearsay

rule if each part of the combined statements conforms with an exception to the hearsay rule provided

in these rules." Fed.R.Evid. 805; see, e.g., Mahlandt v. Wild Canid Survival and Research Ctr.,

Inc., 588 F.2d 626, 630 (8th Cir.1978). Because chlorine pricing and sales were within the scope

of Joe Ragusa's employment with Harcros, Ragusa's statements to Lloyd Krysti clearly fall within

the party admission exception to the hearsay rule.

        Lloyd Krysti's statements to Barbara Krysti, however, do not fall within any exception to the

hearsay rule. The record establishes that chlorine pricing was not substantially within the scope of

Lloyd Krysti's employment. Lloyd Krysti was involved in the pricing and sales of other chemicals

and was rarely and only ministerially involved in chlorine sales. Lloyd Krysti did not set prices for



   14
    We assume arguendo that Lloyd Krysti "found out" about the alleged conspiracy through
conversations with Ragusa or by overhearing Ragusa speak about the conspiracy. Even if Lloyd
"found out" about the alleged conspiracy in some other fashion, however, our conclusion—that
Barbara Krysti's testimony is inadmissible—remains the same. No matter how Lloyd Krysti
"found out" about the conspiracy, Barbara Krysti's recitation of his statements to her is
inadmissible hearsay for the reasons stated in the text.

                                                 18
chlorine. Indeed, the plaintiffs themselves assert that Joe Ragusa was solely responsible for setting

chlorine prices in Alabama, and none of the many Harcros documents in the record indicate

otherwise. On the contrary, in a 1984 memorandum, Ragusa severely upbraided several Harcros

sales managers who set chlorine prices without his approval.

       Because the content of Lloyd Krysti's statements did not concern a matter within the scope

of his employment or agency, they do not fall within the party admission exception in Rule

801(d)(2)(D). See Wilkinson, 920 F.2d at 1565-66. In addition, Lloyd Krysti's statements were not

made in furtherance of the alleged conspiracy, but "merely informed" Barbara Krysti—a

non-conspirator—of the existence of the alleged conspiracy. See Moss, 138 F.3d at 744; cf.

Fed.R.Evid. 801(d)(2)(E). Because Lloyd Krysti's statements to Barbara Krysti do not fall within

any exception to the hearsay rule, we affirm the district court's ruling excluding the testimony of

Barbara Krysti.

                                                 B.

       We next turn to the district court's rulings on the admissibility of the plaintiffs' proffered

expert testimony. The district court excluded the testimony of Perry Garner, a certified public

accountant. Garner offered data and testimony regarding costs borne and profits garnered by the

defendants in the Alabama chlorine market, and also verified the data included in a database

prepared by another of the plaintiffs' experts, statistician James McClave. McClave offered data

showing, and testimony regarding the statistical significance of, market shares in the Alabama

chlorine market, incumbency rates (i.e., the frequency with which companies retained chlorine

contracts with particular municipalities from year to year), the frequency of tie bids in the market,

prices bid by the defendants, winning bid prices, and costs borne by the defendants. The district


                                                 19
court excluded McClave's testimony, in its entirety, as well. The data compiled by McClave were

also used by Dr. Robert Lanzillotti, an economist who offered deposition testimony as well as a

report regarding the economic structure of the Alabama chlorine market and the likelihood, from an

economic standpoint, that a price-fixing conspiracy existed in that market. The district court

criticized Lanzillotti's testimony at length, see Harcros, 877 F.Supp. at 1524-28, 1530-32, but did

not exclude the evidence. See id. at 1538. The defendants do not challenge the district court's denial

of their motion to exclude Lanzillotti's testimony.

           Federal Rule of Evidence 702,15 as explained by the Supreme Court in Daubert v. Merrell

Dow Pharmaceuticals, Inc., 509 U.S. 579, 589, 113 S.Ct. 2786, 2794-95, 125 L.Ed.2d 469 (1993),

and its progeny, controls determinations regarding the admissibility of expert testimony. Expert

testimony may be admitted into evidence if: (1) the expert is qualified to testify competently

regarding the matters he intends to address; (2) the methodology by which the expert reaches his

conclusions is sufficiently reliable as determined by the sort of inquiry mandated in Daubert;16 and


   15
        Rule 702 reads:

                 Rule 702. Testimony by Experts

                 If scientific, technical, or other specialized knowledge will assist the trier of fact
                 to understand the evidence or to determine a fact in issue, a witness qualified as
                 an expert by knowledge, skill, experience, training, or education, may testify
                 thereto in the form of an opinion or otherwise.
   16
     The Daubert Court noted that "[t]he inquiry envisioned by Rule 702 is, we emphasize, a
flexible one." Daubert, 509 U.S. at 594, 113 S.Ct. at 2797. "Many factors will bear on the
inquiry [into whether an expert's reasoning or methodology is reliable], and we do not presume
to set out a definitive checklist or test." Id. at 593, 113 S.Ct. at 2796. Nevertheless, the Court
did identify certain factors that may be pertinent to such an inquiry. These factors include:
"whether [the theory or technique at issue] can be (and has been) tested"; whether it "has been
subjected to peer review and publication"; the "known or potential rate of error" of the
technique, as well as the "existence and maintenance of standards controlling [its] operation";

                                                   20
(3) the testimony assists the trier of fact, through the application of scientific, technical, or

specialized expertise, to understand the evidence or to determine a fact in issue. See Fed.R.Evid.

702; Daubert, 509 U.S. at 589, 113 S.Ct. at 2794 (holding that "under the [Federal] Rules the trial

judge must ensure that any and all scientific testimony or evidence admitted is not only relevant, but

reliable."); Joiner v. General Elec. Co., 78 F.3d at 529-30, rev'd on other grounds, 522 U.S. 136,

118 S.Ct. 512, 139 L.Ed.2d 508 (1997) (stating that Rule 702 requires that the expert be qualified

and that his testimony assist the trier of fact); see also Petruzzi's IGA Supermarkets, Inc. v. Darling-

Delaware Co., 998 F.2d 1224, 1238 (3d Cir.), cert. denied sub nom. Moyer Packing Co. v.

Petruzzi's IGA Supermarkets, Inc., 510 U.S. 994, 114 S.Ct. 554, 126 L.Ed.2d 455 (1993) (combining

Rule 702's requirements with the reliability requirement in a three-part test for admissibility).

        We conclude that the district court abused its discretion in excluding Garner's testimony and

therefore reverse that ruling. We further conclude that the district court's interpretations of Daubert

and of Rules 104 and 702, which formed the basis for the court's exclusion of the testimony of

McClave, were erroneous as a matter of law. We also believe, however, that portions of McClave's

testimony lie outside of his competence as a statistician and that the methodology underlying a small

portion of McClave's data and testimony is fundamentally flawed, thus requiring the exclusion of

those portions of McClave's data and testimony. Accordingly, we affirm the district court's ruling

with regard to these portions, but reverse its ruling excluding the remainder of McClave's testimony.

                                                   1.




and the degree to which the relevant scientific community accepts the theory or technique as
reliable. Id. at 593-94, 113 S.Ct. at 2796-97. We discuss these factors in greater detail in note
25, infra.

                                                  21
        Garner analyzed the costs, revenues, and profits of the defendants and verified the data

compiled by McClave and used by McClave and Lanzillotti. Although the defendants did not move

to exclude Garner's testimony, the court excluded it sua sponte without benefit of a Daubert hearing

and with little discussion:

        The "expert" testimony of Mr. Perry Garner, C.P.A., is also inadmissible. He is no more
        qualified than Dr. McClave to testify on opinions based on economic theory. His deposition
        testimony regarding Van Waters' actual profit margins shows only that he did not consider
        a number of important cost factors. Significantly, exhibits produced by Mr. Garner have all
        been produced since his deposition at which time he expressed no opinions concerning the
        possibility of the existence of or the members of any antitrust conspiracy.

Harcros, 877 F.Supp. at 1532.

        In evaluating the district court's reasoning under our three-part test for admitting expert

testimony, we begin by concurring with the district court's assertion that Garner was not qualified

to render opinions based on economic theory. Nowhere in his extensive testimony, however, did

Garner offer any such opinion. As to the testimony that Garner did offer, it seems apparent that he

was qualified to provide it.17 With respect to the reliability element, the district court did not

identify the "important cost factors" that Garner ostensibly overlooked and that could have affected

the reliability of his methodology. Upon review of Garner's testimony, we find that he considered

material costs, labor costs, overhead costs, transportation costs, depreciation costs, insurance costs,

and a host of other costs. We are at a loss to identify any "important cost factors" that Garner


   17
     Garner holds a C.P.A. license and has experience analyzing the books of companies that
participate in allegedly collusive markets. The defendants, who did not move for the exclusion
of his testimony, do not attack his methodology on appeal. We do not doubt that accounting
expertise is among the sorts of technical and specialized expertise the use of which is governed
by Rule 702 and Daubert. See Morse/Diesel, Inc. v. Trinity Indus., Inc., 67 F.3d 435, 444 (2d
Cir.1995) (stating in dicta that expert testimony of certified public accountants is likely to be
admissible); Frymire-Brinati v. KPMG Peat Marwick, 2 F.3d 183, 186 (7th Cir.1993) (requiring
application of Daubert standard to accountant's expert testimony).

                                                  22
overlooked. Finally, Garner need not have expressed any opinion regarding the existence of any

conspiracy in order for his testimony to be admissible under Rule 702; his testimony need only have

"assist[ed] the trier of fact to understand the evidence or to determine a fact in issue." Fed.R.Evid.

702. Garner's testimony does so by calculating, compiling, and explaining the costs borne and

profits enjoyed by the defendants during the period of the alleged conspiracy; this information

would assist the trier of fact in determining whether, for purposes of the antitrust claims, the

defendants acted in a consciously parallel fashion18 and whether, for purposes of the fraud claims,

defendants' costs impelled price increases. We therefore conclude that the district court abused its

discretion in excluding Garner's testimony.

                                                    2.

        The district court criticized at length the testimony of the plaintiffs' statistician, Dr. James

McClave, and ultimately excluded McClave's testimony in its entirety. We hold that the district

court excluded McClave's data and testimony on the basis of a legally erroneous interpretation of

Rule 702, and that the court abused its discretion in excluding McClave's testimony in its entirety.

We conclude, however, that parts of McClave's testimony must be excluded because those parts

concern issues that are outside McClave's area of competence as a statistician. We also hold that

a small portion of McClave's data and testimony must be excluded because of a flaw in the

statistician's definition of the relevant market.



   18
     As is discussed in part III.A.3, infra, in order to prevail on their claim of the existence of a
price-fixing conspiracy without direct evidence, the plaintiffs must show (1) that the defendants
acted in a consciously parallel fashion, and (2) "plus factors" that tend to exclude the possibility
of non-collusive action. See Dunnivant v. Bi-State Auto Parts, 851 F.2d 1575, 1583 (11th
Cir.1988); Gainesville Utils. Dep't v. Fla. Power & Light Co., 573 F.2d 292, 300-02 (5th Cir.
1978).

                                                    23
        The district court's memorandum opinion offered several grounds for excluding McClave's

testimony.19 See Harcros, 877 F.Supp. at 1528-30. Some of these grounds are sufficient to warrant

the exclusion of parts of McClave's testimony. As the following discussion demonstrates, however,

none of these grounds is sufficient to warrant the exclusion of McClave's testimony in its entirety

(as would, for instance, a finding that McClave was not qualified to testify as an expert in antitrust

statistics).20 We therefore conclude that the district court abused its discretion in excluding

admissible portions of McClave's testimony by ruling that McClave's testimony in its entirety was

inadmissible.

        The district court first attacked McClave's methodology:

        McClave's methodology to determine the existence of a conspiracy is his subjective
        judgment. His subjective judgments, however, cannot be tested. His opinions about whether
        high losing bids are signals is based on looking at the data using his "experience" and
        "judgment." He admits there is no statistical test to determine that a high losing bid is a
        signal. His statistical analysis is not impressive. Having testified, McClave has not made
        a case under Fed.R.Evid. 104. His statistics show anything but a successful conspiracy.

Harcros, 877 F.Supp. at 1529. Review of this passage reveals two fundamental legal errors. We

first consider an error that pervades the court's opinion:        the confusion and conflation of

admissibility issues with issues regarding the sufficiency of the plaintiffs' evidence to survive

summary judgment.21 To put it succinctly, McClave's data and testimony need not "show a

   19
     The district court's opinion is far from clear. The grounds for the exclusion of McClave's
testimony that we identify are those that we are able to reconstruct from the conclusory and
disjointed miscellany that constitutes the district court's discussion of McClave's testimony.
   20
     The defendants do not assert, and could not reasonably assert, that McClave is not qualified
to testify as to statistical evidence in antitrust cases. McClave holds a Ph.D. in statistics and has
considerable experience in the analysis of markets alleged to be collusive.
   21
     It is apparent that this problem, along with many others that we identify in this part of the
opinion, might have been avoided had the district court simply held a Daubert hearing to allow
the parties to clarify their positions, as well as the law, regarding the admissibility of these

                                                 24
successful conspiracy" to be admitted under Rule 702 as circumstantial evidence of a conspiracy.

As expert evidence, the testimony need only assist the trier of fact, through the application of

scientific, technical, or specialized expertise, to understand the evidence or to determine a fact in

issue. As circumstantial evidence, McClave's data and testimony need not prove the plaintiffs' case

by themselves; they must merely constitute one piece of the puzzle that the plaintiffs endeavor to

assemble before the jury. See Burrell v. Board of Trustees of Ga. Military College, 970 F.2d 785,

793 (11th Cir.1992); 1 John W. Strong et al., McCormick on Evidence § 185, at 777 (4th ed. 1992)

("Direct evidence is evidence which, if believed, resolves a matter in issue. Circumstantial evidence

may also be testimonial, but even if the circumstances depicted are accepted as true, additional

reasoning is required to reach the proposition to which it is directed." (internal citation omitted)).

In requiring that McClave's data and testimony "show a successful conspiracy" in order to be

admitted into evidence, therefore, the district court misinterpreted Rule 702 and thus abused its

discretion. See Koon, 518 U.S. at 100, 116 S.Ct. at 2047 ("A district court by definition abuses its

discretion when it makes an error of law.").22

        The district court also erred in relying upon Rule 104 of the Federal Rules of Evidence as

support for its exclusion of McClave's data and testimony. Rule 104(b) allows a district court to



experts' testimony. While Daubert hearings are not required by law or by rules of procedure,
they are almost always fruitful uses of the court's time and resources in complicated cases
involving multiple expert witnesses, such as the instant case.
   22
      This error is repeated in the district court's discussion of McClave's analysis of tie bids, see
Harcros at 1529, and of Industrial's profits, see id. at 1529-30. Whether or not McClave's
testimony, standing alone, supports an inference that Industrial or any other defendant actually
conspired to fix prices is not relevant to the question of the admissibility of the testimony; it is
instead a matter for consideration at summary judgment, when the court must determine whether
a trier of fact could find for the plaintiffs on the evidence adduced. See Cohen v. United Am.
Bank of Cent. Fla., 83 F.3d 1347, 1349 (11th Cir.1996).

                                                  25
determine preliminary questions of fact necessary to apply the Federal Rules of Evidence. The rule

itself, however, does not provide a ground for the exclusion of any evidence as inadmissible under

the Rules. The district court's incorrect use of Rule 104 was apparently rooted in its concern about

the reliability of McClave's testimony.23 This concern, however, is properly addressed under Rule

702 and Daubert. See Daubert, 509 U.S. at 589, 113 S.Ct. at 2795. The district court's erroneous

reliance upon Rule 104 is thus a second ground for concluding that the court abused its discretion

in excluding McClave's testimony in its entirety.

         The district court's fundamental criticism of McClave's testimony—that McClave's

assertions regarding the existence of a conspiracy in general, and his characterization of certain bids

as "signals" to co-conspirators in particular, were outside of his competence as a statistician—is,

however, essentially correct. McClave's testimony is admissible only insofar as it assists the trier

of fact, through the application of scientific, technical, or specialized expertise, to understand the

evidence or to determine a fact in issue. His characterizations of documentary evidence as reflective

of collusion, and his characterizations of particular bids as "signals," do not do so, because the trier

of fact is entirely capable of determining whether or not to draw such conclusions without any

technical assistance from McClave or other experts. In addition, McClave's opinions regarding the

legal standards applicable to this case are outside of his competence and must be excluded.

        On the other hand, most of McClave's testimony is entirely within his competence as a

statistician and would be helpful to a trier of fact. Moreover, McClave utilized well-established and


   23
    We draw this conclusion on the basis of the district court's conclusory statement that
McClave's "statistical analysis is not impressive." As we explain below, we conclude that a
small portion of McClave's testimony is in fact unreliable and inadmissible. At this point,
however, we endeavor to clarify the legal errors that permeate the district court's discussion of
McClave's (and Lanzillotti's) testimony.

                                                  26
reliable methodologies in the preparation of most of his statistics and his testimony. He generated

the statistics underlying his testimony through simple compilation of data from the plaintiff

municipalities' records, from documents and books obtained from the defendants through discovery,

and from public sources.24 McClave's compilations of that data into utile measurements of bid

prices, costs, tie bid frequencies, incumbency rates, and so on, and his testimony regarding estimated

damages, are the products of simple arithmetic and algebra and of multiple regression analysis, a

methodology that is well-established as reliable. See, e.g., Askew v. City of Rome, 127 F.3d 1355,

1365 n. 2 (11th Cir.1997) (in voting rights case, district court admitted expert statistical testimony

based in part on multiple regression analysis); Petruzzi's, 998 F.2d at 1238.25


   24
        The defendants do not attack the provenance or authenticity of McClave's raw data.
   25
      Twenty-nine states, along with the territories of Guam and Puerto Rico, have briefed this
appeal as amici curiae in support of the appellant municipalities. The amici helpfully point out
that, although "an important aspect of assessing scientific validity (and therefore evidentiary
reliability) is the ability of other scientists to test or retest a proponent's theory," not every
scientific or technical methodology applied by expert witnesses is susceptible to such an
analysis. In re Paoli R.R. Yard PCB Litig., 35 F.3d 717, 758 (3d Cir.1994), cert. denied sub
nom. General Elec. Co. v. Ingram, 513 U.S. 1190, 115 S.Ct. 1253, 131 L.Ed.2d 134 (1995).
Economic or statistical analysis of markets alleged to be collusive, for instance, cannot readily be
repeatedly tested, because each such case is widely different from other such cases and because
such cases cannot be made the subject of repeated experiments. The proper inquiry regarding
the reliability of the methodologies implemented by economic and statistical experts in this
context is not whether other experts, faced with substantially similar facts, have repeatedly
reached the same conclusions (because there will be few or no cases that have presented
substantially similar facts). Instead, the proper inquiry is whether the techniques utilized by the
experts are reliable in light of the factors (other than testability) identified in Daubert and in light
of other factors bearing on the reliability of the methodologies. See supra note 16; see also,
e.g., Ohio ex rel. Montgomery v. Louis Trauth Dairy, Inc., 925 F.Supp. 1247, 1252-53 (S.D.Ohio
1996) (noting that Daubert factors should be applied flexibly in determining admissibility of
economic and statistical expert testimony); In re Aluminum Phosphide Antitrust Litig., 893
F.Supp. 1497, 1506 (D.Kan.1995) ("To the extent that Daubert factors are relevant to its
determination [whether an economist's methodologies are reliable], the Court considers them
along with any other relevant factors.... The inquiry is a flexible one, with the overarching
subject being the evidentiary relevance and reliability of the principles that underlie a proposed

                                                  27
        We therefore conclude that most of McClave's testimony (all that is within his competence

as a statistician) satisfies the three interrelated requirements for admission under Rule 702: McClave

is qualified to testify regarding statistical measurements of events in the Alabama chlorine market

during the period of the alleged conspiracy, such testimony will assist the trier of fact, and the

methodologies that McClave used in measuring these events are generally reliable. Upon closer

review, however, we find that the methodology underlying a small portion of McClave's data and

testimony is fundamentally flawed, and that the evidence based thereon is consequently unreliable

and must be excluded.

        The district court correctly pointed out that McClave's database included data regarding

chlorine sales in the Florida panhandle as well as in Alabama.26 See Harcros, 877 F.Supp. at 1528

& n. 57. The inclusion of Florida sales data is problematic because, as the district court pointed out,

"[t]he suit alleges a conspiracy in the state of Alabama—not Alabama, the Florida panhandle, and

the Southeastern states." Id. Data relevant to allegations of collusive activity in Florida may be used

for corroborative purposes, but should not be commingled with data regarding Alabama transactions




submission."). One factor left unenumerated by the Daubert Court is whether "the methods used
by the expert to derive his opinion satisfy the standards for scientific methodology that his
profession would require of his out-of-court research." People Who Care v. Rockford Bd. of
Educ., Sch. Dist. No. 205, 111 F.3d 528, 537 (7th Cir.1997). Taking this factor into account
along with the factors identified in Daubert, we readily conclude that McClave's methodologies
are quite reliable, with the small exception explained infra.
   26
     The district court also attacked McClave's market definition on the ground that "Dr.
McClave calls his statistics "market' shares, but admits that his numbers only include that portion
of the market in which the plaintiffs buy chlorine by sealed bids." Harcros, 877 F.Supp. at 1529
n. 58. Our review of the record reveals that the court's assertion is false; McClave's database did
indeed include data from the Alabama municipalities that purchased chlorine through
negotiations with the defendants and other chemical companies rather than through sealed-bid
auctions, and McClave so stated in both his prepared report and his deposition testimony.

                                                  28
for purposes of making calculations intended to be used as circumstantial evidence of collusive

behavior in Alabama. Including data regarding transactions that were not part of the alleged

conspiracy in the database skews any cumulative measurements, such as percentages or frequencies,

that depend upon the size and characteristics of the database as a whole and that are intended to

describe the alleged conspiracy.

       On the other hand, most of McClave's data, as well as the testimony regarding that data, do

not suffer from this problem; these data either do not include any information regarding transactions

in Florida, include only Florida data that can readily be separated from Alabama data, or are not

expressed in percentages or frequencies and thus are not skewed by the inclusion of Florida data.

McClave's data regarding the frequency of tie bids and of incumbent bidders retaining contracts, for

instance, are for the Alabama market alone, and do not include Florida data; these data, and the

testimony based thereon, are thus reliable and admissible. McClave's data on bid prices and on the

costs borne by the defendants are not expressed in percentages or frequencies but in mere

compilations of prices and costs. Since the Florida data on prices and costs can readily be separated

from the Alabama data, the Florida data may be used by the trier of fact for corroborative purposes

if they indicate collusive behavior in the Florida panhandle or ignored if they do not. McClave's

market share measurements regarding the northern half of Alabama do not include Florida data and

are therefore admissible; McClave's measurements of the defendants' respective market shares for

the southern half of Alabama and for the Florida panhandle, on the other hand, are skewed by the

inclusion of the Florida data and must be excluded.

        In sum, we affirm the district court's exclusion of McClave's data and testimony in part and

reverse it in part. We affirm the district court's exclusion of McClave's measurements and testimony


                                                 29
regarding market shares in the southern Alabama submarket. We also affirm the district court's

exclusion of McClave's opinions regarding the law controlling the case and of his characterizations

of documentary evidence as tending to show collusive behavior. We reverse the district court's

exclusion of the remainder of McClave's data and testimony.27

                                                III.




   27
      As noted in the introduction to part II.B, supra, the district court lengthily criticized the
testimony of Dr. Robert Lanzillotti, an economist whose testimony as an expert was proffered by
the plaintiffs; the court did not, however, exclude Lanzillotti's testimony. The defendants have
not questioned the district court's denial of their motion to exclude Lanzillotti's testimony. We
note in passing that much of Lanzillotti's testimony does indeed appear to warrant exclusion:
specifically, Lanzillotti's opinions regarding the legal standards applicable to the case are outside
of his competence as an economist (and are erroneous) and should be excluded. The same is true
of Lanzillotti's characterizations of pieces of documentary evidence as tending to show collusion;
such judgments are for the court to make at summary judgment and for the trier of fact to make
at trial. Furthermore, we point out that Lanzillotti's professed market definition is clearly wrong.
Lanzillotti stated in his report that "[t]he relevant geographic market is the largest market for
which data are available and facilitate a more comprehensive understanding of what transpired in
the State of Alabama." This is contrary to law and scholarship; the relevant geographic market
is the market that includes "producers that provide customers of a defendant firm (or firms) with
alternative sources for the defendant's product or services." Levine v. Central Fla. Med.
Affiliates, Inc., 72 F.3d 1538, 1552 (11th Cir.), cert. denied, --- U.S. ----, 117 S.Ct. 75, 136
L.Ed.2d 34 (1996) (quoting IIA Phillip E. Areeda et al., Antitrust Law ¶ 530a, at 150 (1995)).
Whether the litigants in a particular case are able to compile data regarding a particular market is
irrelevant to the market definition analysis. See also Thompson v. Metropolitan Multi-List, Inc.,
934 F.2d 1566, 1573 (11th Cir.1991) (discussing geographic market definition process in detail).
We express no opinion as to whether the market definition that Lanzillotti actually used in his
analysis is the one that he professed to use in his report; nor do we express any opinion as to
whether the use of the professed market definition would have any derogatory effect upon the
reliability of his testimony. We merely point out that the sort of market definition that
Lanzillotti professed to use in his report—one with an apparent eye toward litigation—is
inaccurate.

                                                 30
        We now turn to the district court's rulings granting summary judgment in favor of the

defendants. We consider the court's rulings on the plaintiffs' antitrust claims,28 and then the court's

treatment of the plaintiffs' fraud claims.

                                                  A.

                                                  1.

        We first take up the district court's entry of summary judgment in favor of Jones Chemicals.

The district court concluded that summary judgment in favor of Jones Chemicals was warranted

because Jones "do[es] not have that much economic power to make a conspiracy stick." Harcros,

877 F.Supp. at 1535. We read this statement as an indication that the district court, viewing the

evidence in the light most favorable to the plaintiffs, concluded that the trier of fact could not find

for the plaintiffs and against Jones on the basis of the economic and statistical evidence and on the

basis of other circumstantial evidence (such as memoranda and other documents that, the plaintiffs

assert, indicate attempts by the defendants to establish and maintain the alleged conspiracy). If this

was the district court's conclusion, we hold that the court erred for the reasons discussed in part

III.A.3, infra.

        More importantly, we hold that the entry of summary judgment in favor of Jones Chemicals

must be reversed because Robert Jones' admissions to the Cassassas constitute powerful direct

evidence that Jones Chemicals was involved in collusive behavior in the Alabama chlorine market

during the mid-1980s. In the absence of overwhelming evidence to the contrary (and as discussed

infra, we conclude that no overwhelming evidence has been produced by the defendants), the trier



   28
    As explained in note 8, supra, our disposition of the plaintiffs' state-law antitrust claims is
identical to our disposition of their federal antitrust claims.

                                                  31
of fact could well find in favor of the plaintiffs against Jones Chemicals on the basis of these

admissions alone. The district court's entry of summary judgment in favor of Jones Chemicals on

the plaintiffs' several antitrust claims is therefore reversed.

                                                   2.

        We next turn to the entry of summary judgments in favor of Van Waters and PB & S. The

district court correctly pointed out that PB & S

        was a nonplayer in the "South Alabama" submarket, as defined by plaintiffs, and had only
        a handful of sales in the North Alabama market. PB & S had no business in South Alabama
        and the Florida Panhandle area, and won only three bids in North Alabama from 1984-1990.
        It had a nonexistent market share from 1985 to 1990, the period of the purported conspiracy.
        PB & S was not a player in sales to municipalities. Plaintiffs have produced no evidence that
        PB & S was motivated to, participated in, or benefited from a conspiracy.

Harcros, 877 F.Supp. at 1535. The record reflects that Van Waters also had a zero or near-zero

market share in Alabama during the period of the alleged conspiracy. See id. at 1527-28. As the

district court pointed out, Van Waters' and PB & S' participation in a conspiracy that garnered them

zero or near-zero market shares would be irrational. The plaintiffs and their experts assert that Van

Waters and PB & S participated in the alleged conspiracy because they were afforded a quid pro

quo; these two companies, the plaintiffs assert, were allotted extra chlorine contracts in markets

outside Alabama in exchange for their participation in the collusive behavior in Alabama. The

plaintiffs have put forward no evidence, however, to show any such quid pro quo or even to show

that Van Waters' and PB & S' market shares increased elsewhere. The appellants' case against Van

Waters and PB & S thus amounts to an allegation that those two defendants took part in a conspiracy

that earned them zero market share and zero dollars. There is no direct evidence against these two,

and the circumstantial evidence, including the plaintiffs' expert testimony, does not support the

conclusion that Van Waters and PB & S participated in a conspiracy that excluded them from the

                                                   32
market. No trier of fact could find against Van Waters and PB & S on such a basis.29 The entry of

summary judgment in favor of Van Waters and PB & S on the plaintiffs' antitrust claims is therefore

affirmed.

                                                  3.

         We now turn to the plaintiffs' antitrust claims against Industrial and Harcros. The

documentary circumstantial evidence proffered by the plaintiffs is not alone sufficient to take

Industrial or Harcros to trial because none of the documentary evidence supports the inference that

the defendants colluded to fix prices in the Alabama repackaged chlorine market. The Caine

affidavit, for instance, says nothing about Industrial's motivation in passing on the Mobile contract.

Industrial argues that it withdrew its bid to avoid conflict with its supplier, Jones Chemicals, and

Caine's affidavit would not enable a trier of fact reasonably to reject Industrial's contention and

accept that of the plaintiffs. Likewise, memoranda showing that Joe Ragusa exercised strict control

over chlorine pricing at Harcros support an inference that Ragusa was frustrated with his

subordinates' failure to follow an innocuous allocation of responsibility as easily as they support an

inference that Harcros centralized pricing authority in Ragusa in order to conceal the alleged



   29
     See Matsushita Elec. Indus. Co. v. Zenith Radio Corp., 475 U.S. 574, 587, 106 S.Ct. 1348,
1356, 89 L.Ed.2d 538 (1986) ("It follows from these settled principles that if the factual context
renders [plaintiffs'] claim implausible—if the claim is one that simply makes no economic
sense—[plaintiffs] must come forward with more persuasive evidence to support their claim than
would otherwise be necessary."); Eastman Kodak Co. v. Image Technical Svcs., Inc., 504 U.S.
451, 468-69, 112 S.Ct. 2072, 2083, 119 L.Ed.2d 265 (1992) ("Matsushita demands only that the
nonmoving party's inferences be reasonable in order to reach the jury.... If the plaintiff's theory
is economically senseless, no reasonable jury could find in its favor, and summary judgment
should be granted."); Helicopter Support Sys., Inc. v. Hughes Helicopter, Inc., 818 F.2d 1530,
1534 (11th Cir.1987) ("Matsushita dictates that if the alleged conspiracy is economically
infeasible or irrational then, as a matter of law, summary judgment must be entered against the
plaintiff.").

                                                 33
conspiracy from other employees. Like these memoranda and the Caine documents, the rest of the

plaintiffs' circumstantial documentary evidence is in equipoise, and in the absence of further

evidence of collusion, summary judgment against the plaintiffs would be in order. See James v. Otis

Elevator Co., 854 F.2d 429, 432 n. 3 (11th Cir.1988) ("A fact that can only be decided by a coin toss

has not been proven by a preponderance of the evidence, and cannot be submitted to the jury.");

Pan-Islamic Trade Corp. v. Exxon Corp., 632 F.2d 539, 558 (5th Cir.1980) (requiring that

circumstantial evidence "support an inference of the existence of an agreement" in order for claim

of unlawful boycott to survive summary judgment).30

        Viewing the plaintiffs' experts' proffered data and testimony in addition to the documentary

evidence, however, we conclude that the plaintiffs' circumstantial evidence is sufficient to take their

antitrust claims against Harcros and Industrial to trial. It is settled law that a threshold requirement

of every antitrust conspiracy claim, whether brought under section 1 or section 2 of the Sherman

Act, is "an agreement to restrain trade. To prove that such an agreement exists between two or more

persons, a plaintiff must demonstrate "a unity of purpose or a common design and understanding,

or a meeting of minds in an unlawful arrangement.' " Seagood Trading Corp. v. Jerrico, Inc., 924

F.2d 1555, 1573 (11th Cir.1991) (quoting American Tobacco Co. v. United States, 328 U.S. 781,

810, 66 S.Ct. 1125, 1139, 90 L.Ed. 1575 (1946)). "We recognize that it is only in rare cases that a

plaintiff can establish the existence of a conspiracy by showing an explicit agreement; most

conspiracies are inferred from the behavior of the alleged conspirators," Seagood, 924 F.2d at 1573-




   30
    In Bonner v. City of Prichard, 661 F.2d 1206, 1209 (11th Cir.1981) (en banc), this court
adopted as binding precedent all decisions of the former Fifth Circuit handed down prior to
October 1, 1981.

                                                  34
74,31 and from other circumstantial evidence (economic and otherwise), such as barriers to entry and

other market conditions. When a plaintiff seeks to prove a conspiracy by inference, courts must be

mindful that

        "[o]n summary judgment the inferences to be drawn from the underlying facts ... must be
        viewed in the light most favorable to the party opposing the motion." United States v.
        Diebold, Inc., 369 U.S. 654, 655, 82 S.Ct. 993, 994, 8 L.Ed.2d 176 (1962). But antitrust law
        limits the range of permissible inferences from ambiguous evidence in a § 1 case. Thus, in
        Monsanto Co. v. Spray-Rite Service Corp., 465 U.S. 752, 104 S.Ct. 1464, 79 L.Ed.2d 775
        (1984), we held that conduct as consistent with permissible competition as with illegal
        conspiracy does not, standing alone, support an inference of antitrust conspiracy. Id., at 764,
        104 S.Ct., at 1470. See also [First National Bank of Ariz. v. Cities Serv. Co., 391 U.S. 253,
        280, 88 S.Ct. 1575, 1588, 20 L.Ed.2d 569 (1968) ]. To survive a motion for summary
        judgment or for a directed verdict, a plaintiff seeking damages for a violation of § 1 must
        present evidence "that tends to exclude the possibility" that the alleged conspirators acted
        independently. 465 U.S., at 764, 104 S.Ct., at 1471. [Such plaintiffs], in other words, must
        show that the inference of conspiracy is reasonable in light of the competing inferences of
        independent action or collusive action that could not have harmed respondents. See Cities
        Service, supra, 391 U.S., at 280, 88 S.Ct., at 1588.

Matsushita Elec. Indus. Co. v. Zenith Radio Corp., 475 U.S. 574, 587-88, 106 S.Ct. 1348, 1356-57,

89 L.Ed.2d 538 (1986). This circuit applies these observations to section 2 conspiracy claims as

well. See Seagood, 924 F.2d at 1573-74.

        A specific standard has developed for application to cases, such as the instant case, in which

the defendant oligopolists32 assert that evidence seeming to indicate collusion in fact reflects only



   31
     See also DeLong Equip. Co. v. Washington Mills Abrasive Co., 887 F.2d 1499, 1515 (11th
Cir.1989).
   32
     The parties agree that the market for repackaged chlorine in Alabama is oligopolistic. See
Harcros, 877 F.Supp. at 1509. An oligopolistic market may be defined as a market in which
"the dominant participants ... engag[e] in interdependent or parallel behavior and [have] the
capacity effectively to determine price and total output of goods or services." Republic of Tex.
Corp. v. Board of Governors of the Fed. Reserve Sys., 649 F.2d 1026, 1044 & n. 32 (5th Cir.
Unit A June 1981) (quoting United States v. Marine Bancorporation, 418 U.S. 602, 630, 94 S.Ct.
2856, 2874, 41 L.Ed.2d 978 (1974)).

                                                  35
a pattern of uniform business conduct known as "conscious parallelism." The Supreme Court has

defined conscious parallelism as a "process, not in itself unlawful, by which firms in a concentrated

market might in effect share monopoly power, setting their prices at a profit-maximizing,

supracompetitive level by recognizing their shared economic interests and their interdependence

with respect to price and output decisions." Brooke Group Ltd. v. Brown & Williamson Tobacco

Corp., 509 U.S. 209, 227, 113 S.Ct. 2578, 2590, 125 L.Ed.2d 168 (1993). In other words, conscious

parallelism is the practice of interdependent pricing in an oligopolistic market by competitor firms

that realize that attempts to cut prices usually reduce revenue without increasing any firm's market

share, but that simple price leadership in such a market can readily increase all competitors'

revenues. See Coleman v. Cannon Oil Co., 849 F.Supp. 1458, 1467 (M.D.Ala.1993) (quoting VI

Phillip E. Areeda et al., Antitrust Law ¶ 1410b (1986)); VI Areeda, supra, ¶ 1429a-b.

        "[I]t is well settled in this circuit that evidence of conscious parallelism [alone] does not

permit an inference of conspiracy unless the plaintiff [either] establishes that, assuming there is no

conspiracy, each defendant engaging in the parallel action acted contrary to its economic

self-interest,"33 Todorov v. DCH Healthcare Auth., 921 F.2d 1438, 1456 n. 30 (11th Cir.1991),34 or


   33
     For the sake of clarity, we read this reference to a defendant's "economic self-interest" as a
reference to what that defendant's legitimate economic self-interest would be under the
assumption that it acted alone; a price-fixing conspiracy, if successfully implemented, is in the
collective self-interest of the conspirators. Cf. Bolt v. Halifax Hosp. Med. Ctr., 891 F.2d 810,
826-27 (11th Cir.1990) ("[T]he plaintiff must establish that each defendant would have acted
unreasonably in a business sense if it had engaged in the challenged conduct unless that
defendant had received assurances from the other defendants that they would take the same
action."); ABA Section of Antitrust Law, Antitrust Law Developments 10 & n. 51 (4th ed.1997).

   34
    The second sentence of note 30 in Todorov reads: "Conscious parallelism is uniform
business conduct by competitors that permits a court to infer the existence of a conspiracy
between these competitors." We read this, in accordance with the remainder of that footnote and

                                                 36
offers other "plus factors" tending to establish that the defendants were not engaging merely in

oligopolistic price maintenance or price leadership but rather in a collusive agreement to fix prices

or otherwise restrain trade. See Dunnivant v. Bi-State Auto Parts, 851 F.2d 1575, 1583 (11th

Cir.1988);35 Gainesville Utils. Dep't v. Fla. Power & Light Co., 573 F.2d 292, 300-02 (5th



with the established law and scholarship on the point, to state only the first part of the test; that
is, consciously parallel behavior permits a court to infer the existence of a conspiracy only in the
presence of "plus factors," such as the implausibility that the defendants would have acted as
they did had they not been unlawfully conspiring in restraint of trade.
   35
     The district court read Dunnivant to require plaintiffs to show that the defendants' actions
were contrary to their legitimate economic self-interest, in addition to showing "plus factors"
that tend to exclude the possibility that the defendants were merely practicing conscious
parallelism. See Harcros, 877 F.Supp. at 1522-23. There is support for such a reading in the
wording of Dunnivant. As explained in the text, however, we read Dunnivant, in accordance
with the bulk of the law on point and with eminent scholarship, to establish only that the plaintiff
either must prove that the defendants' actions were contrary to their legitimate economic
self-interest or must show other "plus factors" tending to exclude the possibility of lawful action.
See Gainesville Utils., 573 F.2d at 300-02; VI Areeda, Antitrust Law ¶ 1434, at 213-221 (noting
on p. 213 that, "[w]ith rare exception, the courts have been very clear that mere parallelism,
including interdependent conscious parallelism[,] cannot support a conspiracy finding unless
there are additional or "plus' factors."); ABA, Antitrust Law Developments 8-14. In other
words, whether the defendants' actions were contrary to their legitimate economic self-interest is
only one prominent "plus factor" that plaintiffs may attempt to prove.

                 Our review of this circuit's law on point did disclose the following statement from
        Bolt v. Halifax Hosp. Med. Ctr., 891 F.2d 810, 826 (11th Cir.1990): "The rule in this
        circuit is that evidence of conscious parallelism does not permit an inference of
        conspiracy unless the plaintiff establishes that each defendant engaging in the parallel
        action acted contrary to its economic self-interest." As explained in the preceding
        paragraph, a showing that the defendant acted contrary to its legitimate economic
        self-interest, see supra note 33, is sufficient to satisfy the requirement that the plaintiff
        show "plus factors" beyond mere consciously parallel action. Other "plus factors,"
        however, may also exist.

                On a different note, we observe that the district court cited our decision in
        Helicopter Support Systems., Inc. v. Hughes Helicopter, Inc., 818 F.2d 1530, 1534 & n. 4
        (11th Cir.1987), as support for its addition of another prong to the established test for
        finding an agreement to restrain trade: that the plaintiff is required to "exclud[e] the
        possibility of independent action on the part of the defendants." See Harcros, 877

                                                 37
Cir.1978); Donald F. Turner, The Definition of Agreement Under the Sherman Act: "Conscious

Parallelism" and Refusals to Deal, 75 Harv. L.Rev. 655, 659 (1962) ("Even the fact that competitors

have knowingly charged identical prices is a neutral fact in the absence of evidence which would

lead one to expect that the prices would have been different if truly independent decisions had been

made."). The requirement of "plus factors" is necessary because evidence of consciously parallel

behavior alone leaves the circumstantial evidence of collusion in equipoise; consciously parallel

behavior by oligopolists does not in itself support an inference of agreement, of "a meeting of the

minds," any more strongly than it supports an inference of legal price maintenance or leadership.

Thus, this requirement "ensures that unilateral or procompetitive conduct is not punished or

deterred." Todorov, 921 F.2d at 1456 n. 30.

        The circumstantial evidence in the instant case—that is, the documentary evidence and the

plaintiffs' experts' data and testimony—will thus be sufficient to take the price-fixing claims against

Harcros and Industrial to trial if it meets the above standard. In sum, the plaintiffs first must produce

evidence showing that the defendants engaged in consciously parallel action. Second, the plaintiffs



        F.Supp. at 1532. This citation was erroneous for two reasons. First, the language that the
        district court relied upon was addressed to plaintiffs who bring distributor-termination
        claims; that type of claim was not brought in this case. See Helicopter Support, 818 F.2d
        at 1534 ("[T]he plaintiff in a distributor-termination case must also be able to point to
        evidence which tends to exclude the possibility that the manufacturer was operating
        independently in making his determination to terminate the distributor."). In addition, the
        Helicopter Support language merely restated Matsushita 's requirement (drawn from
        Monsanto ) that the plaintiff show that an inference of conspiracy is reasonable, i.e., that
        the plaintiff allege a plausible conspiracy that is sufficiently supported by the
        circumstantial evidence. See Helicopter Support, 818 F.2d at 1533 (after noting that
        evidence excluding independent action is required by Monsanto, we stated that, "[i]n
        short, Monsanto establishes that conduct which is as equally consistent with permissible
        competition as it is with an illegal conspiracy does not, without more, support even an
        inference of conspiracy."). Helicopter Support, therefore, does not provide a basis for
        grafting an additional requirement onto the established test.

                                                   38
must show "plus factors" that tend to exclude the possibility that the defendants merely were

engaged in lawful conscious parallelism. One prominent "plus factor," to which antitrust plaintiffs

often take recourse, is a showing that the defendants' behavior would not be reasonable or explicable

(i.e. not in their legitimate economic self-interest) if they were not conspiring to fix prices or

otherwise restrain trade—that is, that the defendants would not have acted as they did had they not

been conspiring in restraint of trade. See, e.g., Theatre Enters., Inc. v. Paramount Film Distrib.

Corp., 346 U.S. 537, 540-42, 74 S.Ct. 257, 259-60, 98 L.Ed. 273 (1954).

        We hold that the circumstantial evidence adduced by the plaintiffs against Harcros and

Industrial satisfies this standard. For all the inadequacies of the record on appeal, it suffers from no

shortage of evidence of consciously parallel behavior in the market; most importantly, Garner and

McClave's data and testimony reveal that prices in the market moved in a notably parallel fashion

during the period of the alleged conspiracy, and that prices uniformly rose during that period much

more quickly than the defendants' costs. In addition, the fact that the chlorine-buying municipalities

publicly announced the bid submitted by each competitor constitutes evidence that these defendants

were conscious of each other's prices during this period.

        The necessary "plus factor" is established by the high and rising incumbency rates

demonstrated by McClave's data;36 these rates peaked at over 90 percent during the middle of the


   36
      Cf. Petruzzi's IGA Supermarkets, Inc. v. Darling-Delaware Co., 998 F.2d 1224, 1245 (3d
Cir.), cert. denied sub nom. Moyer Packing Co. v. Petruzzi's IGA Supermarkets, Inc., 510 U.S.
994, 114 S.Ct. 554, 126 L.Ed.2d 455 (1993) (in finding that defendants' refusal to bid on existing
accounts as aggressively as new accounts constituted a plus factor, the court stated: "absent an
agreement it does not make economic sense for defendants not to bid on an account, unless they
have some problem like capacity or they know that the existing price is too high."); id. at 1246
("It is one thing for competitors all to charge the same price, as a perfectly competitive market
could lead them to do so. It is quite another for competitors all to refrain from soliciting each
other's accounts."); VI Areeda, Antitrust Law WW 1420d & 1420' (1986 & Supp.1997).

                                                  39
period of the alleged conspiracy in the southern Alabama submarket, and at nearly 90 percent in the

northern submarket, during a period of stable costs, high and rising prices, and high and rising

profits.37 Oligopolists behaving in a legal, consciously parallel fashion could achieve high and rising

prices, even as costs remained stable, by engaging in price leadership. See VI Areeda, Antitrust Law

¶ 1429, at 176. The odds that they could achieve a price and profit increase and maintain incredibly

high incumbency rates—that is, maintain the very same distribution of municipal contracts year after

year—are minuscule, however, unless the oligopolists were communicating with one another.38 In

sum, this combination of high profits and high incumbency would not be likely to occur if the

defendants39 either were vigorously competing with each other or were engaging in competitive

price leadership. It would be permissible for a jury to find, therefore, that the defendants were not




   37
     The plaintiffs also point to other evidence that, they assert, supports the existence of two
additional "plus factors": delivered pricing (i.e., pricing that includes all transportation costs)
and departure from the business practices that prevailed before the period of the alleged
conspiracy. (The remainder of the plaintiffs' asserted "plus factors" are certainly no more
supportive of an inference of collusion than of an inference of conscious parallelism.) We do not
consider whether delivered pricing and departure from previous business practices do in fact
establish "plus factors" in this case, however, because our conclusion regarding incumbency
rates in the market suffices to support the holding we reach today.
   38
     Defendant Van Waters astutely points out in its brief that, if the defendants had wished to
conspire, it would have been smarter to "rotate incumbencies," i.e., to alter the distribution of
contracts from time to time in order to minimize incumbency rates and prevent a holding such as
the one we reach today. We agree (although we also point out that such an arrangement likely
would have required more explicit, and hence more dangerous, collusion); nonetheless, the high
incumbency rates exhibited in the market would not likely have occurred in the absence of some
sort of communication among the defendants. Those rates therefore establish the necessary "plus
factor."
   39
     In this part of the opinion we review the district court's entry of summary judgment on the
antitrust claims against Harcros and Industrial. As stated in part III.A.1, however, this
discussion applies to Jones Chemicals as well.

                                                  40
in fact competing for contracts but were concertedly protecting each others' incumbencies and

pushing up prices.

          We therefore conclude that the circumstantial evidence produced by the plaintiffs establishes

Harcros' and Industrial's consciously parallel behavior in the market for chlorine in Alabama. We

further conclude that the evidence of very high incumbency rates in the market during the period of

the alleged conspiracy, at a time of high and rising prices and profits but stable costs, establishes the

necessary "plus factor" tending to exclude the possibility that the defendants were merely engaging

in conscious parallelism. We therefore reverse the district court's entry of summary judgment in

favor of Industrial and Harcros on the plaintiffs' antitrust claims.

                                                   B.

           Finally, we review the district court's entry of summary judgment on the plaintiffs' fraud

claims. The plaintiffs brought two types of fraud claims against the defendants. First, the plaintiffs

claimed that the defendants committed fraud by sending to the municipal authorities letters

apologizing for price increases and claiming that all price increases were the result of increasing

costs.40 Second, the plaintiffs asserted that the defendants committed fraud by signing bid

documents that included clauses in which the defendants represented to the plaintiff municipalities

that the bids being submitted were not the result of collusive behavior.41 The district court tersely


   40
        One such letter, from Jones Chemicals, read:

                  Although it in no way reflects the wishes of Jones Chemicals, we find it necessary
                  to adjust our selling prices from time to time in order to keep up with the ever
                  increasing cost of staying in business as a reliable source of chemicals.
   41
    One such clause, included in a bid document executed by Harcros for the benefit of the City
of Lafayette, stated:


                                                   41
rejected the plaintiffs' fraud claims: "Having ruled there is no conspiracy, the court finds there can

be no fraud for failure to disclose it." Harcros, 877 F.Supp. at 1537. We first note that this finding

is an insufficient ground for granting summary judgment on the claims that arise out of the price

increase letters; those claims do not depend upon the existence of a conspiracy because the plaintiffs

could potentially prove that the representations made—that price increases were due to cost

increases—were false without also proving that the defendants conspired to bring about the

referenced price increases by collusive behavior. We therefore vacate the district court's entry of

summary judgment as to the fraud claims based on the defendants' letters. We remand for a

determination of which claims are supported by evidence of representations by specific defendants

to specific plaintiffs. The claims that are supported by the record must go to trial.

        Furthermore, because we hold that the plaintiffs' antitrust claims against Harcros, Industrial,

and Jones survive summary judgment, we vacate the district court's entry of summary judgment as

to all of the plaintiffs' fraud claims with support in the record that are based upon these three

defendants' alleged concealment of a price-fixing conspiracy.42 We remand for the district court to

determine which of these defendants submitted bid documents containing the allegedly false




               I hereby affirm I have not been in any agreement or collusion among bidders or
               prospective bidders in restraint of freedom of competition, by agreement to bid at
               a fixed price or to refrain from bidding, or otherwise.
   42
     Because we affirm the district court's entry of summary judgment on the antitrust claims
against Van Waters & Rogers and PB & S, we also affirm its entry of summary judgment on the
plaintiffs' claim that these two defendants made fraudulent representations of non-collusion in
bid documents.

                                                 42
representations to which plaintiffs, and thus which fraud claims of this second type should go to

trial.43

                                                 IV.

           For the foregoing reasons, we REVERSE the district court's exclusion of the testimony of

Loraine and Peter Cassassa, REVERSE the district court's exclusion of the affidavit of O.W. Caine,

and AFFIRM the district court's exclusion of the testimony of Barbara Krysti. We REVERSE in

part the district court's exclusion of the data and testimony of Perry Garner and James McClave, and

AFFIRM in part. On the basis of the evidence as it appears now that the admissibility questions are

settled, we REVERSE the district court's entry of summary judgment on the plaintiffs' antitrust

claims against Jones Chemicals, Harcros, and Industrial. We AFFIRM the district court's entry of

summary judgment on the plaintiffs' antitrust claims against Van Waters and against PB & S.

Finally, we AFFIRM the district court's entry of summary judgment on the plaintiffs' claim that Van

Waters and PB & S made fraudulent representations of non-collusion in bid documents. In all other

respects, we VACATE the district court's entry of summary judgment on the plaintiffs' fraud claims

against the defendants and REMAND for further proceedings in accordance with this opinion.



    43
     In its order granting summary judgment, the district court also held that the defendants'
fraud, if it occurred, was excused by the lack of a "confidential relationship with the plaintiffs
requiring disclosure of the existence of a conspiracy." Harcros, 877 F.Supp. at 1537. The court
cited Lowder Realty, Inc. v. Odom, 495 So.2d 23, 26 (Ala.1986); Holdbrooks v. Central Bank of
Ala., N.A., 435 So.2d 1250, 1252 (Ala.1983); and Tonsmeire v. Tonsmeire, 285 Ala. 454, 233
So.2d 465, 468 (Ala.1970), in support of this proposition. These cases, and the doctrine they
reflect, require that a close relationship exist between two parties before there arises a duty to
disclose—that is, not to remain silent—about facts material to the relationship. See id. In the
instant case, however, the plaintiffs allege not that the defendants merely failed to speak up
about the alleged conspiracy, but that the defendants made affirmative and explicit
misrepresentations to them regarding the existence of the conspiracy and the defendants' costs.
These cases, and the doctrine underlying them, are therefore inapposite.

                                                  43
SO ORDERED.




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