{1} In this class action lawsuit, Plaintiffs allege that Defendants engaged in an agreement to fix the price of cigarettes from 1993 to 2000. The district court granted summary judgment in favor of Defendants, because although Plaintiffs offered evidence of parallel pricing, they failed to establish a genuine issue of material fact regarding whether any evidence, in addition to the parallel pricing, tended to exclude independent conduct on Defendants’ part, as required by federal substantive law. On appeal, the Court of Appeals
{2} We granted Defendants’ petition for writ of certiorari to consider two issues. First, we consider whether the Court of Appeals applied the incorrect standard for summary judgment. Second, we consider whether the Court of Appeals correctly applied federal substantive law regarding alleged agreements to fix prices. Although we agree with the summary judgment standard applied by the Court of Appeals, we hold that the Court of Appeals did not correctly apply federal substantive law as required by NMSA 1978, Section 57-1-15 (1979). Under federal substantive antitrust law, 15 U.S.C. § 1 (2006), evidence of parallel price increases alone is not sufficient in the context of an oligopoly to prove an agreement to fix prices. Such evidence is always ambiguous, and therefore plaintiffs who allege a price-fixing agreement must also provide evidence that tends to exclude the possibility that parallel price increases were the result, of independent conduct. Because federal law limits the inferences available to a jury to those that are reasonable, plaintiffs relying upon circumstantial evidence cannot survive summary judgment, as a matter of law, unless the evidence tends to exclude the possibility that the alleged conspirators acted independently. Independent conduct is also referred to in case law as “conscious parallelism,” “tacit collusion,” or “legal independent conduct.” We therefore affirm the district court’s grant of summary judgment and reverse the Court of Appeals.
BACKGROUND
{3} The following facts are undisputed. Plaintiffs are “[pjersons in the State of New Mexico ... who purchased cigarettes indirectly from Defendants, or any parent, subsidiary or affiliate thereof, at any time from November 1, 1993 to the date of the filing of this action [April 10, 2000].” The original Defendants were Philip Morris, R.J. Reynolds (“RJR”), Brown & Williamson (“B & W”), Lorillard, and Liggett. The events leading up to this lawsuit were set in motion in response to a Philip Morris strategy beginning with an event known as “Marlboro Friday.”
1
Prior to Marlboro Friday, Philip Morris, the market leader, had been steadily losing market share to discount and deep discount cigarettes since 1980, when Liggett pioneered the development of generic cigarettes. See Brooke Group Ltd. v. Brown & Williamson Tobacco Corp.,
{4} Plaintiffs filed this class action lawsuit on April 10, 2000, alleging violations of New Mexico antitrust and consumer protection laws. See NMSA 1978, §§ 57-1-1 to-15 (1979, as amended through 1987); NMSA 1978, §§ 57-12-1 to -22 (1967, as amended through 1999). Defendants filed motions for summary judgment. In granting the motion for summary judgment, the district court held that Plaintiffs had met their initial burden of showing a pattern of parallel behavior, but failed to meet their second burden of showing the existence of plus factors that would tend to exclude the possibility that the alleged conspirators acted independently. Plaintiffs argued that the following were plus factors that tended to exclude Defendants’ independent conduct: (1) the economies of the marketplace; (2) Defendants’ strong motivation to conspire; (3) the fact that Defendants condensed the price tiers to facilitate their conspiracy; (4) Defendants acted contrary to their own self-interests; (5) alleged conspiratorial meetings in foreign markets; (6) Defendants had engaged in past conspiracies, such as misrepresenting the health consequences of smoking; (7) Defendants monitored their conspiracy through monthly factory shipment data reports prepared by Management Science Associates (“MSA”); (8) opportunities to conspire, including inter-firm communications and meetings; and (9) pricing decisions were made by those in high-level positions. However, the district court relied on the Eleventh Circuit case of Williamson Oil Co. v. Philip Morris USA,
{5} On appeal, the Court of Appeals acknowledged that “Marlboro Friday and the industry-wide price reductions that occurred afterward represented the triumph of competition over oligopolistic price coordination.” Romero,
If the plaintiff comes forward with evidence that would allow a reasonable fact-finder to exclude lawful conscious parallelism as the most likely explanation for the parallelism proved by the plaintiff, then the plaintiff has made out a prima facie case that would defeat summary judgment.At trial, then, the burden of negating the exculpatory inference of lawful conscious parallelism simply merges into the plaintiffs ultimate burden of convincing the factfinder that the parallelism proved by the plaintiff was more likely than not the result of a conspiracy.
Id. The Court of Appeals then constructed a hypothetical situation in which the jury could find that Defendants entered into an agreement to fix prices. Id. ¶¶ 27-30. Although rejecting the concept of plus factors, the Court held that
[tjestimony by a qualified economics expert that the character or degree of parallelism actually exhibited by prices exceeds the parallelism that economic theory predicts would result from independent competitive behavior is precisely the type of evidence that tends to exclude the possibility that the defendants acted independently ... [and] constitutes an extremely forceful “plus factor”....
Id. ¶ 32. The Court also held that “Dr. Leffler’s testimony is sufficient to meet Plaintiffs’ burden of production,” id., and that “conscious parallelism in a complex, multi-variable industry is ‘improbable,’ ” id. ¶ 35 (citation omitted). In its conclusion, the Court of Appeals noted numerous ways in which the parallelism cited by Plaintiffs could not reasonably have been the result of Defendants’ independent conduct. Id. ¶¶ 44-45.
{6} As stated previously, we granted certiorari to determine whether the Court misapplied the summary judgment standard and whether the Court failed to follow substantive federal antitrust law. We reverse the Court of Appeals and affirm the district court’s grant of summary judgment.
SUMMARY JUDGMENT
{7} Defendants argue that the Court of Appeals applied the incorrect summary judgment standard by referring to the “traditional stringent standard that a movant must meet.” Id. ¶ 15. The standard, as articulated by the Court of Appeals, is to “view the facts in a light most favorable to the party opposing summary judgment and draw all reasonable inferences in support of a trial on the merits.” Id. ¶ 17 (internal quotation marks and citation omitted). This was a correct statement of the standard for summary judgment in New Mexico:
Summary judgment is appropriate where there are no genuine issues of material fact and the movant is entitled to judgment as a matter of law. Where reasonable minds will not differ as to an issue of material fact, the court may properly grant summary judgment. All reasonable inferences are construed in favor of the non-moving party.
Montgomery v. Lomos Altos, Inc.,
{8} New Mexico courts, unlike federal courts, view summary judgment with disfavor, preferring a trial on the merits. Compare Handmaker v. Henney,
{9} We continue to refuse to loosen the reins of summary judgment, as doing so would “turn what is a summary proceeding into a full-blown paper trial on the merits.” Bartlett v. Mirabal,
{10} In New Mexico, summary judgment may be proper when the moving party has met its initial burden of establishing a prima facie case for summary judgment. See Roth v. Thompson,
{11} In addition to requiring reasonable inferences, New Mexico law requires that the alleged facts at issue be material to survive summary judgment. To determine which facts are material, the court must “look to the substantive law governing the dispute,” Farmington Police Officers Ass’n v. City of Farmington,
FEDERAL SUBSTANTIVE ANTITRUST LAW: PROVING THE CONSPIRACY
{12} As substantive law is the filter through which we apply summary judgment, and to construe our law in harmony with federal law, see § 57-1-15, we must first undertake an analysis of substantive federal antitrust law. To establish a violation of Section 1 of the Sherman Act, a plaintiff “must be able to show: (1) concerted action, (2) by two or more persons, (3) which unreasonably restrains interstate or foreign trade or commerce.” In re Med. X-Ray Film Antitrust Litig.,
The essence of a Section 1 claim is the existence of an agreement. Unilateral action simply does not support liability; there must be a unity of purpose or a common design and understanding or a meeting of the minds in an unlawful agreement. Concerted action is established where two or more distinct entities have agreed to take action against the plaintiff.
Gordon v. Lewistown Hosp.,
[A]n oligopolist’s price and output decisions will have a noticeable impact on the market and on its rivals.... [For example,] in a market served by three large companies, each firm must know that if it reduces its price and increases its sales at the expense of its rivals, they will notice the sales loss, identify the cause, and probably respond____Because of their mutual awareness, oligopolists’ decisions may be interdependent although arrived at independently.
VI Phillip E. Areeda & Herbert Hovenkamp, Antitrust Law: An Analysis of Antitrust Principles and Their Application ¶ 1429a (2d ed.2003). To summarize, where there are very few sellers (firms) within a market, the actions of one seller will have a noticeable effect on the actions taken by the other sellers. The other sellers may perform a cost-benefit analysis and react to the actions of the leader, producing results similar to an unlawful price-fixing agreement, but actually resulting from lawful, independent action. This “[t]acit collusion [or independent conduct] ... describes the 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.,
{13} To prove a violation of Section 1 of the Sherman Act, plaintiffs can produce direct or circumstantial evidence of an illegal agreement to fix prices. See Monsanto Co.,
{14} As a result of the need to draw inferences from circumstantial evidence and the likelihood that parallel conduct in an oligopoly stems from lawful, independent conduct, federal courts require antitrust plaintiffs to present evidence “that tends to exclude the possibility that the alleged conspirators acted independently.” Matsushita Elec. Indus. Co. v. Zenith Radio Corp.,
{15} As a result of the limited inferences that can be drawn from circumstantial evidence and the interdependent nature of an oligopoly, the plaintiffs must present more than evidence of parallel pricing to prove the existence of an agreement between the defendants to fix prices. Although “parallel business behavior is admissible circumstantial evidence from which the fact finder may infer agreement, it falls short of conclusively establishing] agreement or ... itself constituting] a Sherman Act offense.” Bell Atl. Corp. v. Twombly,
{16} It is the judge’s duty to review the evidence presented by the plaintiffs and make a threshold legal determination as to whether it tends to exclude the possibility that the defendants acted independently. See Williamson Oil Co.,
{17} To assist in determining which evidence would tend to exclude independent action, federal courts have created “plus factors.” “[A]ny showing ... that ‘tend[s] to exclude the possibility of independent action’ can qualify as a ‘plus factor.’ ” Williamson Oil Co.,
NEW MEXICO ANTITRUST PLAINTIFFS MUST PRESENT EVIDENCE TENDING TO EXCLUDE THE POSSIBILITY THAT DEFENDANTS ACTED INDEPENDENTLY
{18} Plaintiffs allege that Defendants violated the New Mexico Antitrust Act, which states that “[e]very contract, agreement, combination or conspiracy in restraint of trade or commerce, any part of which trade or commerce is within this state, is unlawful.” Section § 57-1-1. To prove a cause of action under the Antitrust Act the Legislature requires that “the Antitrust Act shall be construed in harmony with judicial interpretations of the federal antitrust laws. This construction shall be made to achieve uniform application of the state and federal laws prohibiting restraints of trade and monopolistic practices.” Section 57-1-15 (emphasis added). It is therefore the duty of the courts to ensure that New Mexico antitrust law does not deviate substantially from federal interpretations of antitrust law. See State v. Guerra,
{19} Federal substantive law as it relates to oligopolies controls in this case.
{20} Material facts are those “necessary to give rise to a claim,” Eoff,
{21} In rejecting the plus factor approach used by the federal courts and holding that parallel conduct can be enough to prove a conspiracy, the Court of Appeals fails to construe the New Mexico Antitrust Act in harmony with judicial interpretations of federal antitrust law required by Section 57-1-15. See Romero,
{22} In reversing the district court and holding that an agreement to fix prices can
{23} We also disagree with the Court of Appeals in Romero that both Dr. Leffler’s opinion and Brooke Group set forth “major points of departure” from the plus factor approach discussed in Williamson Oil. The Court noted that Dr. Leffler stated that “[t]he economic evidence indicates that it is highly unlikely that independent competitive behavior explains the price restructuring and price changes for cigarettes during the alleged conspiracy period.” Id. ¶ 32 (internal quotation marks omitted). The Court also held that “Dr. Leffler’s opinion testimony, if believed, would permit a reasonable factfinder to exclude lawful parallelism as the most likely explanation for the parallelism demonstrated by cigarette prices during the class period.” Id. Although the Court held that it was “not inclined to appoint [itself an] amateur econo[mist] and attempt to second guess Dr. Leffler’s reasoning,” id. ¶ 39, it did not give consideration to the fact that there were several ambiguities in Dr. Leffler’s opinion that were drawn out in his deposition. While Dr. Leffler opined that the parallel price increases were not the result of lawful parallelism, he also agreed that the factors he used to determine the existence of a price-fixing conspiracy could not “tell you one way or the other whether you have conscious parallelism or you’ve got something beyond conscious parallelism like a price fixing agreement.” He also offered the opinion that an explicit agreement was a violation of Section 1 of the Sherman Act as opposed to oligopolistic coordination and there was no explicit agreement in this case. Dr. Leffler stated that rational oligopolists would act to maximize profits, rational oligopolists would have matched the Marlboro Friday price reduction, and RJR and B & W were most likely acting to maximize their profits by failing to re-widen the price gap. Dr. Leffler even went so far as to acknowledge that the cigarette industry “responded as I would have expected them to respond ... [t]o match the price cut and then to anticipate future price increases, to extend the oligopoly cooperation to the discount sector.”
{24} In general, Dr. Leffler’s report concludes that following Marlboro Friday, Defendants’ actions amounted to illegal price-fixing. However, his statements and responses in his deposition demonstrate that he actually thought it was just as likely that Defendants would have behaved in the same
{25} Without becoming amateur economists, the Court of Appeals could have easily recognized inconsistencies between Dr. Leffler’s report and his deposition. Based on these ambiguities in the evidence, it would have been necessary under substantive antitrust law to hold that the evidence did not tend to exclude independent conduct because it was also consistent with independent conduct. See Holiday Wholesale Grocery Co. v. Philip Morris, Inc.,
{26} The Court of Appeals also relied heavily on several facets of the United States Supreme Court’s analysis in Brooke Group to bolster both its reliance on Dr. Leffler’s opinion and its conclusion that independent action was an unlikely explanation for the parallel pricing observed during the period of the alleged agreement to fix prices. Romero,
{27} Retail pricing is influenced by so many variables that the cigarette oligopoly cannot exert collective control over it through independent conduct. See Brooke Group Ltd.,
{28} Despite these significant distinctions between Brooke Group and the instant case, the Court of Appeals nonetheless suggests that “Defendants’ theory of the present case seems ... easily as complex as the recoupment theory rejected in Brooke Group.” Romero,
{29} The point of Marlboro Friday and subsequent price reductions, however, was to simplify the wholesale pricing scheme, collapsing the market from ten pricing tiers to two, so there would be a less complex pricing system. Due to the interdependent nature of an oligopoly, “oligopolistic rationality” can “provide for price increases through ... price leadershipH” if the other firms believe that following the pricing leader will maximize their profits. VI Areeda & Hovenkamp, supra ¶ 1429a-b (internal quotation marks omitted) (discussing interdependent decision-making and how the actions of one firm may result in the independent decision of other firms to follow if doing so will maximize profits). To stem the flow of market share into the discount sector, Philip Morris realized the need to close the price gap between premium and discount cigarettes, and set about undertaking this task with Marlboro Friday and the subsequent price reductions in the premium and discount sectors. With the price gap closed and only two price tiers remaining, Philip Morris was able to take advantage of the expected “oligopolistic rationality” when prices began to ascend to pre-Marlboro Friday levels. Dr. Leffler opined that RJR and B & W were acting as rational oligopolists by following Philip Morris in subsequent price increases to prevent further price cuts similar to Marlboro Friday. Compliance was ensured by the looming threat of continued revenue losses should Philip Morris institute a second Marlboro Friday. 3 By relying on “oligopolistic rationality” and having condensed the ten-tier system to two tiers, Philip Morris used its dominant market position and the inherent interdependencies of the cigarette oligopoly to force the other manufacturers to comply with its subsequent price increases in both pricing tiers. These strategic moves were all part of Philip Morris’s strategy to “box in its competitors” and advance its own competitive position.
{30} Prior to Marlboro Friday, Philip Morris attempted to box in its competitors and reduce the discount-premium price gap by independently raising generic and discount cigarette prices. However, this attempt failed. Romero,
{31} Nothing about the cigarette oligopoly’s coordination of the wholesale two-tier market is multi-variable or complex as described in Brooke Group. Retail pricing, not list pricing, is multi-variable and complex and makes independent conduct an improbable
{32} The result of Philip Morris’s market dominance was that premium cigarettes and discount cigarettes became subject to interdependent conduct, whereas prior to Marlboro Friday only premium cigarettes were subject to such oligopolistic control. Plaintiffs’ expert, Dr. Leffler, stated that Marlboro Friday “caused a restructuring in the industry and a change in the competitive relationships.” As a result of this restructuring, oligopolistic functioning and rationale extended to the discount sector where there had been no such functioning prior to Marlboro Friday. Indeed, Dr. Leffler even acknowledged in his deposition that the industry merely “extend[ed] the oligopoly cooperation to the discount sector.” As oligopolistic control is lawful in the premium price tier, there is no rationale for arguing that it is illegal in the discount price tier. For these reasons, the Court of Appeals’s reliance on Brooke Group was misplaced.
{33} Thus, we must determine whether Plaintiffs’ proffered evidence of plus factors tends to exclude the possibility that Defendants acted independently. Plaintiffs cite to the following plus factors, in addition to parallel pricing, as tending to exclude the possibility that Defendants acted independently: (1) the economies of the marketplace, such as a highly concentrated market, cigarette fungibility, high barriers to entry in the industry, absence of close substitutes, and a history of collusion; (2) a strong motivation to conspire, resulting from the desperate times facing the cigarette industry, including “a dramatic decline in its sales as a result of ... increased public awareness of the detrimental health effects of smoking”; (3) the condensation of price tiers to facilitate the conspiracy; (4) actions contrary to self-interest, including Philip Morris’s pre-announcing its price reductions and Defendants’ failure to attempt to re-widen the price gap by reducing discount prices; (5) conspiratorial meetings in other markets; (6) a smoking and health conspiracy; (7) the manner in which Defendants monitored the conspiracy through Management Science Associates (“MSA”) 4 ; (8) opportunities to conspire; and (9) pricing decisions made at high levels. Although the ambiguities in Dr. Leffler’s opinion have previously been discussed, see supra, ¶¶ 23-25, we will further review the evidence presented by Dr. Leffler, since this is the only plus factor cited by the Court of Appeals.
{34} We reject Plaintiffs’ plus factors for reasons similar to those set forth in Williamson Oil Co. because Defendants’ conduct is just as consistent with lawful, independent action as it is with price fixing, and therefore it does not tend to exclude independent conduct. We briefly discuss Plaintiffs’ plus factors to address why they do not tend to exclude the possibility of independent conduct by Defendants. (1) The majority of the economies of the marketplace to which Plaintiffs cite are nothing more than inherent characteristics of an oligopoly and cannot tend to exclude independent action.
{35} We also affirm the district court’s ruling that “even after going through the plus factors, there still exists the opportunity for the defendant to rebut the inference of collusion by presenting evidence establishing that no reasonable fact-finder could conclude that they entered into a price-fixing conspiracy.” Plaintiffs and the Court of Appeals erred in failing to acknowledge any legitimate rational explanations for the actions taken by Defendants. Plaintiffs ignore both retail competition and the effect that competition had on the “actual ‘transaction’ prices.” Defendants competed “vigorously” on retail pricing, spending a combined total of over $25 billion. This competition led to RJR and B & W filing a lawsuit against Philip Morris alleging violations of the Sherman Act and unfair competition for conduct that occurred in the midst of the alleged conspiracy. See R.J. Reynolds Tobacco Co. v. Philip Morris Inc.,
{36} Plaintiffs also fail to explain the economic rationale for Defendants competing so fiercely on retail promotions that would undermine any benefit they may have been receiving from a price-fixing conspiracy at the wholesale level. See Williamson Oil Co.,
{37} In addition, market shares did not remain static but shifted and resulted in clear winners, such as Philip Morris, and clear losers, such as RJR and B & W. Philip Morris walked away a winner by ensuring that the price gap remained at a desirable level, while RJR and B & W, both of which had relied heavily on discount cigarettes, lost market share. During the period of the alleged conspiracy, Philip Morris’s market share grew from 42.2% to 50.5%; RJR’s share shrunk from 30.6% to 23.0%; and B & W’s share declined from 16.6% to 11.7%. These shifts in market share also resulted in substantial revenue adjustments, further highlighting the winners and losers. For example, “in 1999 alone [Philip Morris] realized an additional $2.9 billion in revenues as a result of its cumulative increase in market share since 1993.” In 1999, RJR was down approximately $3 billion in annual revenues compared to 1993, and B & W lost $1.3 billion in annual revenues from 1993 to 1999. Plaintiffs offer no evidence to explain why RJR and B & W would participate in a conspiracy that would result in lost market share and revenue. Rather, it is more likely that RJR and B & W acted as they did because it was the best option for them to follow out of a number of bad options. Philip Morris argued that each price increase subsequent to Marlboro Friday was for legitimate business reasons and independently made. Philip Morris stated that Plaintiffs
{38} Defendants made a prima facie case supporting summary judgment by providing evidence of fierce retail competition that undermined the plausibility of a price-fixing agreement, demonstrating that wholesale prices remained lower than pre-Marlboro Friday levels and did not exceed pre-Marlboro Friday levels until almost five years later, and by highlighting the ambiguities in Dr. Leffler’s opinion. This evidence showed that Defendants ‘“had no rational economic motive to conspire, and ... their conduct is consistent with other, equally plausible explanations.’ ” Clough,
CONCLUSION
{39} Failing to produce evidence tending to exclude independent action, Plaintiffs have not raised a genuine issue of material fact that there was an agreement between Defendants to fix the prices of cigarettes. Therefore, we reverse the Court of Appeals and affirm summary judgment in favor of all Defendants.
{40} IT IS SO ORDERED.
Notes
. We adopt the Court of Appeals recitation of the facts of the pre-Marlboro Friday events. See Romero v. Philip Morris, Inc.,
. Matsushita Elec. Indus. Co. v. Zenith Radio Corp.,
. Declaration of RJR CEO: "[Biased on Marlboro Friday, RJR believed that [Philip Morris] would not allow a competitor to take market share away from Marlboro by cutting prices. Thus, RJR believed, any further price reduction would be futile and would result in lower profits.”
. "[MSA] provides data collection, processing, and storage services to numerous Fortune 500 companies, including American Express, MCI, Coca-Cola, and Michelin Tires." "MSA Inc. shipment-to-wholesale data are aggregated, historical data on manufacturer shipments of cigarettes to wholesalers that manufacturers provide to MSA Inc. for processing, and do not contain any cigarette pricing information.”
