Matsushita Electric Industrial Co., Ltd. v. Zenith Radio Corporation
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Full Opinion
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., et al., Petitioners
v.
ZENITH RADIO CORPORATION et al.
No. 83-2004.
Argued Nov. 12, 1985.
Decided March 26, 1986.
Syllabus
Petitioners are 21 Japanese corporations or Japanese-controlled American corporations that manufacture and/or sell "consumer electronic products" (CEPs) (primarily television sets). Respondents are American corporations that manufacture and sell television sets. In 1974, respondents brought an action in Federal District Court, alleging that petitioners, over a 20-year period, had illegally conspired to drive American firms from the American CEP market by engaging in a scheme to fix and maintain artificially high prices for television sets sold by petitioners in Japan and, at the same time, to fix and maintain low prices for the sets exported to and sold in the United States. Respondents claim that various portions of this scheme violated, inter alia, §§ 1 and 2 of the Sherman Act, § 2(a) of the Robinson-Patman Act, and § 73 of the Wilson Tariff Act. After several years of discovery, petitioners moved for summary judgment on all claims. The District Court then directed the parties to file statements listing all the documentary evidence that would be offered if the case went to trial. After the statements were filed, the court found the bulk of the evidence on which respondents relied was inadmissible, that the admissible evidence did not raise a genuine issue of material fact as to the existence of the alleged conspiracy, and that any inference of conspiracy was unreasonable. Summary judgment therefore was granted in petitioners' favor. The Court of Appeals reversed. After determining that much of the evidence excluded by the District Court was admissible, the Court of Appeals held that the District Court erred in granting a summary judgment and that there was both direct and circumstantial evidence of a conspiracy. Based on inferences drawn from the evidence, the Court of Appeals concluded that a reasonable factfinder could find a conspiracy to depress prices in the American market in order to drive out American competitors, which conspiracy was funded by excess profits obtained in the Japanese market.
Held: The Court of Appeals did not apply proper standards in evaluating the District Court's decision to grant petitioners' motion for summary judgment. Pp. 582-598.
(a) The "direct evidence" on which the Court of Appeals relied—petitioners' alleged supracompetitive pricing in Japan, the "five company rule" by which each Japanese producer was permitted to sell only to five American distributors, and the "check prices" (minimum prices fixed by agreement with the Japanese Government for CEPs exported to the United States) insofar as they established minimum prices in the United States—cannot by itself give respondents a cognizable claim against petitioners for antitrust damages. P. 583-583.
(b) To survive petitioners' motion for a summary judgment, respondents must establish that there is a genuine issue of material fact as to whether petitioners entered into an illegal conspiracy that caused respondents to suffer a cognizable injury. If the factual context renders respondents' claims implausible, i.e., claims that make no economic sense, respondents must offer more persuasive evidence to support their claims than would otherwise be necessary. To survive a motion for a summary judgment, a plaintiff seeking damages for a violation of § 1 of the Sherman Act must present evidence "that tends to exclude the possibility" that the alleged conspirators acted independently. Thus, respondents here must show that the inference of a conspiracy is reasonable in light of the competing inferences of independent action or collusive action that could not have harmed respondents. Pp. 585-588.
(c) Predatory pricing conspiracies are by nature speculative. They require the conspirators to sustain substantial losses in order to recover uncertain gains. The alleged conspiracy is therefore implausible. Moreover, the record discloses that the alleged conspiracy has not succeeded in over two decades of operation. This is strong evidence that the conspiracy does not in fact exist. The possibility that petitioners have obtained supracompetitive profits in the Japanese market does not alter this assessment. Pp. 588-593.
(d) Mistaken inferences in cases such as this one are especially costly, because they chill the very conduct that the antitrust laws are designed to protect. There is little reason to be concerned that by granting summary judgment in cases where the evidence of conspiracy is speculative or ambiguous, courts will encourage conspiracies. Pp. 593-595.
(e) The Court of Appeals erred in two respects: the "direct evidence" on which it relied had little, if any, relevance to the alleged predatory pricing conspiracy, and the court failed to consider the absence of a plausible motive to engage in predatory pricing. In the absence of any rational motive to conspire, neither petitioners' pricing practices, their conduct in the Japanese market, nor their agreements respecting prices and distributions in the American market sufficed to create a "genuine issue for trial" under Federal Rule of Civil Procedure 56(e). On remand, the Court of Appeals may consider whether there is other, unambiguous evidence of the alleged conspiracy. Pp. 595-598.
723 F.2d 238 (CA3 1983), reversed and remanded.
POWELL, J., delivered the opinion of the Court, in which BURGER, C.J., and MARSHALL, REHNQUIST, and O'CONNOR, JJ., joined. WHITE, J., filed a dissenting opinion, in which BRENNAN, BLACKMUN, and STEVENS, JJ., joined, post, p. 598.
Donald J. Zoeller, for petitioners.
Charles F. Rule, Washington, D.C., for U.S., as amicus curiae, by special leave of Court, in support of petitioners.
Edwin P. Rome, Philadelphia, Pa., for respondents.
Justice POWELL delivered the opinion of the Court.
This case requires that we again consider the standard district courts must apply when deciding whether to grant summary judgment in an antitrust conspiracy case.
* Stating the facts of this case is a daunting task. The opinion of the Court of Appeals for the Third Circuit runs to 69 pages; the primary opinion of the District Court is more than three times as long. In re Japanese Electronic Products Antitrust Litigation, 723 F.2d 238 (CA3 1983); 513 F.Supp. 1100 (ED Pa.1981). Two respected District Judges each have authored a number of opinions in this case; the published ones alone would fill an entire volume of the Federal Supplement. In addition, the parties have filed a 40-volume appendix in this Court that is said to contain the essence of the evidence on which the District Court and the Court of Appeals based their respective decisions.
We will not repeat what these many opinions have stated and restated, or summarize the mass of documents that constitute the record on appeal. Since we review only the standard applied by the Court of Appeals in deciding this case, and not the weight assigned to particular pieces of evidence, we find it unnecessary to state the facts in great detail. What follows is a summary of this case's long history.
A.
Petitioners, defendants below, are 21 corporations that manufacture or sell "consumer electronic products" (CEPs)—for the most part, television sets. Petitioners include both Japanese manufacturers of CEPs and American firms, controlled by Japanese parents, that sell the Japanese-manufactured products. Respondents, plaintiffs below, are Zenith Radio Corporation (Zenith) and National Union Electric Corporation (NUE). Zenith is an American firm that manufactures and sells television sets. NUE is the corporate successor to Emerson Radio Company, an American firm that manufactured and sold television sets until 1970, when it withdrew from the market after sustaining substantial losses. Zenith and NUE began this lawsuit in 1974,1 claiming that petitioners had illegally conspired to drive American firms from the American CEP market. According to respondents, the gist of this conspiracy was a " 'scheme to raise, fix and maintain artificially high prices for television receivers sold by [petitioners] in Japan and, at the same time, to fix and maintain low prices for television receivers exported to and sold in the United States.' " 723 F.2d, at 251 (quoting respondents' preliminary pretrial memorandum). These "low prices" were allegedly at levels that produced substantial losses for petitioners. 513 F.Supp., at 1125. The conspiracy allegedly began as early as 1953, and according to respondents was in full operation by sometime in the late 1960's. Respondents claimed that various portions of this scheme violated §§ 1 and 2 of the Sherman Act, § 2(a) of the Robinson-Patman Act, § 73 of the Wilson Tariff Act, and the Antidumping Act of 1916.
After several years of detailed discovery, petitioners filed motions for summary judgment on all claims against them. The District Court directed the parties to file, with preclusive effect, "Final Pretrial Statements" listing all the documentary evidence that would be offered if the case proceeded to trial. Respondents filed such a statement, and petitioners responded with a series of motions challenging the admissibility of respondents' evidence. In three detailed opinions, the District Court found the bulk of the evidence on which Zenith and NUE relied inadmissible.2
The District Court then turned to petitioners' motions for summary judgment. In an opinion spanning 217 pages, the court found that the admissible evidence did not raise a genuine issue of material fact as to the existence of the alleged conspiracy. At bottom, the court found, respondents' claims rested on the inferences that could be drawn from petitioners' parallel conduct in the Japanese and American markets, and from the effects of that conduct on petitioners' American competitors. 513 F.Supp., at 1125-1127. After reviewing the evidence both by category and in toto, the court found that any inference of conspiracy was unreasonable, because (i) some portions of the evidence suggested that petitioners conspired in ways that did not injure respondents, and (ii) the evidence that bore directly on the alleged price-cutting conspiracy did not rebut the more plausible inference that petitioners were cutting prices to compete in the American market and not to monopolize it. Summary judgment therefore was granted on respondents' claims under § 1 of the Sherman Act and the Wilson Tariff Act. Because the Sherman Act § 2 claims, which alleged that petitioners had combined to monopolize the American CEP market, were functionally indistinguishable from the § 1 claims, the court dismissed them also. Finally, the court found that the Robinson-Patman Act claims depended on the same supposed conspiracy as the Sherman Act claims. Since the court had found no genuine issue of fact as to the conspiracy, it entered judgment in petitioners' favor on those claims as well.3
B
The Court of Appeals for the Third Circuit reversed.4 The court began by examining the District Court's evidentiary rulings, and determined that much of the evidence excluded by the District Court was in fact admissible. 723 F.2d, at 260-303. These evidentiary rulings are not before us. See 471 U.S. 1002, 105 S.Ct. 1863, 85 L.Ed.2d 157 (1985) (limiting grant of certiorari).
On the merits, and based on the newly enlarged record, the court found that the District Court's summary judgment decision was improper. The court acknowledged that "there are legal limitations upon the inferences which may be drawn from circumstantial evidence," 723 F.2d, at 304, but it found that "the legal problem . . . is different" when "there is direct evidence of concert of action." Ibid. Here, the court concluded, "there is both direct evidence of certain kinds of concert of action and circumstantial evidence having some tendency to suggest that other kinds of concert of action may have occurred." Id., at 304-305. Thus, the court reasoned, cases concerning the limitations on inferring conspiracy from ambiguous evidence were not dispositive. Id., at 305. Turning to the evidence, the court determined that a factfinder reasonably could draw the following conclusions:
1. The Japanese market for CEPs was characterized by oligopolistic behavior, with a small number of producers meeting regularly and exchanging information on price and other matters. Id., at 307. This created the opportunity for a stable combination to raise both prices and profits in Japan. American firms could not attack such a combination because the Japanese Government imposed significant barriers to entry. Ibid.
2. Petitioners had relatively higher fixed costs than their American counterparts, and therefore needed to operate at something approaching full capacity in order to make a profit. Ibid.
3. Petitioners' plant capacity exceeded the needs of the Japanese market. Ibid.
4. By formal agreements arranged in cooperation with Japan's Ministry of International Trade and Industry (MITI), petitioners fixed minimum prices for CEPs exported to the American market. Id., at 310. The parties refer to these prices as the "check prices," and to the agreements that require them as the "check price agreements."
5. Petitioners agreed to distribute their products in the United States according to a "five company rule": each Japanese producer was permitted to sell only to five American distributors. Ibid.
6. Petitioners undercut their own check prices by a variety of rebate schemes. Id., at 311. Petitioners sought to conceal these rebate schemes both from the United States Customs Service and from MITI, the former to avoid various customs regulations as well as action under the antidumping laws, and the latter to cover up petitioners' violations of the check-price agreements.
Based on inferences from the foregoing conclusions,5 the Court of Appeals concluded that a reasonable factfinder could find a conspiracy to depress prices in the American market in order to drive out American competitors, which conspiracy was funded by excess profits obtained in the Japanese market. The court apparently did not consider whether it was as plausible to conclude that petitioners' price-cutting behavior was independent and not conspiratorial.
The court found it unnecessary to address petitioners' claim that they could not be held liable under the antitrust laws for conduct that was compelled by a foreign sovereign. The claim, in essence, was that because MITI required petitioners to enter into the check-price agreements, liability could not be premised on those agreements. The court concluded that this case did not present any issue of sovereign compulsion, because the check-price agreements were being used as "evidence of a low export price conspiracy" and not as an independent basis for finding antitrust liability. The court also believed it was unclear that the check prices in fact were mandated by the Japanese Government, notwithstanding a statement to that effect by MITI itself. Id., at 315.
We granted certiorari to determine (i) whether the Court of Appeals applied the proper standards in evaluating the District Court's decision to grant petitioners' motion for summary judgment, and (ii) whether petitioners could be held liable under the antitrust laws for a conspiracy in part compelled by a foreign sovereign. 471 U.S. 1002, 105 S.Ct. 1863, 85 L.Ed.2d 157 (1985). We reverse on the first issue, but do not reach the second.
II
We begin by emphasizing what respondents' claim is not. Respondents cannot recover antitrust damages based solely on an alleged cartelization of the Japanese market, because American antitrust laws do not regulate the competitive conditions of other nations' economies. United States v. Aluminum Co. of America, 148 F.2d 416, 443 (CA2 1945) (L. Hand, J.); 1 P. Areeda & D. Turner, Antitrust Law ¶ 236d (1978).6 Nor can respondents recover damages for any conspiracy by petitioners to charge higher than competitive prices in the American market. Such conduct would indeed violate the Sherman Act, United States v. Trenton Potteries Co., 273 U.S. 392, 47 S.Ct. 377, 71 L.Ed. 700 (1927); United States v. Socony-Vacuum Oil Co., 310 U.S. 150, 223, 60 S.Ct. 811, 844, 84 L.Ed. 1129 (1940), but it could not injure respondents: as petitioners' competitors, respondents stand to gain from any conspiracy to raise the market price in CEPs. Cf. Brunswick Corp. v. Pueblo Bowl-O-Mat, Inc., 429 U.S. 477, 488-489, 97 S.Ct. 690, 697, 50 L.Ed.2d 701 (1977). Finally, for the same reason, respondents cannot recover for a conspiracy to impose nonprice restraints that have the effect of either raising market price or limiting output. Such restrictions, though harmful to competition, actually benefit competitors by making supracompetitive pricing more attractive. Thus, neither petitioners' alleged supracompetitive pricing in Japan, nor the five-company rule that limited distribution in this country, nor the check prices insofar as they established minimum prices in this country, can by themselves give respondents a cognizable claim against petitioners for antitrust damages. The Court of Appeals therefore erred to the extent that it found evidence of these alleged conspiracies to be "direct evidence" of a conspiracy that injured respondents. See 723 F.2d, at 304-305.
Respondents nevertheless argue that these supposed conspiracies, if not themselves grounds for recovery of antitrust damages, are circumstantial evidence of another conspiracy that is cognizable: a conspiracy to monopolize the American market by means of pricing below the market level.7 The thrust of respondents' argument is that petitioners used their monopoly profits from the Japanese market to fund a concerted campaign to price predatorily and thereby drive respondents and other American manufacturers of CEPs out of business. Once successful, according to respondents, petitioners would cartelize the American CEP market, restricting output and raising prices above the level that fair competition would produce. The resulting monopoly profits, respondents contend, would more than compensate petitioners for the losses they incurred through years of pricing below market level.
The Court of Appeals found that respondents' allegation of a horizontal conspiracy to engage in predatory pricing,8 if proved,9 would be a per se violation of § 1 of the Sherman Act. 723 F.2d, at 306. Petitioners did not appeal from that conclusion. The issue in this case thus becomes whether respondents adduced sufficient evidence in support of their theory to survive summary judgment. We therefore examine the principles that govern the summary judgment determination.
III
To survive petitioners' motion for summary judgment,10 respondents must establish that there is a genuine issue of material fact as to whether petitioners entered into an illegal conspiracy that caused respondents to suffer a cognizable injury. Fed.Rule Civ.Proc. 56(e);11 First National Bank of Arizona v. Cities Service Co., 391 U.S. 253, 288-289, 88 S.Ct. 1575, 1592, 20 L.Ed.2d 569 (1968). This showing has two components. First, respondents must show more than a conspiracy in violation of the antitrust laws; they must show an injury to them resulting from the illegal conduct. Respondents charge petitioners with a whole host of conspiracies in restraint of trade. Supra, at 582-583. Except for the alleged conspiracy to monopolize the American market through predatory pricing, these alleged conspiracies could not have caused respondents to suffer an "antitrust injury," Brunswick Corp. v. Pueblo Bowl-O-Mat, Inc., 429 U.S., at 489, 97 S.Ct., at 697, because they actually tended to benefit respondents. Supra, at 582-583. Therefore, unless, in context, evidence of these "other" conspiracies raises a genuine issue concerning the existence of a predatory pricing conspiracy, that evidence cannot defeat petitioners' summary judgment motion.
Second, the issue of fact must be "genuine." Fed.Rules Civ.Proc. 56(c), (e). When the moving party has carried its burden under Rule 56(c),12 its opponent must do more than simply show that there is some metaphysical doubt as to the material facts. See DeLuca v. Atlantic Refining Co., 176 F.2d 421, 423 (CA2 1949) (L. Hand, J.), cert. denied, 338 U.S. 943, 70 S.Ct. 423, 94 L.Ed. 581 (1950); 10A C. Wright, A. Miller, & M. Kane, Federal Practice and Procedure § 2727 (1983); Clark, Special Problems in Drafting and Interpreting Procedural Codes and Rules, 3 Vand.L.Rev. 493, 504-505 (1950). Cf. Sartor v. Arkansas Natural Gas Corp., 321 U.S. 620, 627, 64 S.Ct. 724, 728, 88 L.Ed. 967 (1944). In the language of the Rule, the nonmoving party must come forward with "specific facts showing that there is a genuine issue for trial." Fed.Rule Civ.Proc. 56(e) (emphasis added). See also Advisory Committee Note to 1963 Amendment of Fed.Rule Civ.Proc. 56(e), 28 U.S.C.App., p. 626 (purpose of summary judgment is to "pierce the pleadings and to assess the proof in order to see whether there is a genuine need for trial"). Where the record taken as a whole could not lead a rational trier of fact to find for the non-moving party, there is no "genuine issue for trial." Cities Service, supra, 391 U.S., at 289, 88 S.Ct., at 1592.
It follows from these settled principles that if the factual context renders respondents' claim implausible—if the claim is one that simply makes no economic sense—respondents must come forward with more persuasive evidence to support their claim than would otherwise be necessary. Cities Service is instructive. The issue in that case was whether proof of the defendant's refusal to deal with the plaintiff supported an inference that the defendant willingly had joined an illegal boycott. Economic factors strongly suggested that the defendant had no motive to join the alleged conspiracy. 391 U.S., at 278-279, 88 S.Ct., at 1587. The Court acknowledged that, in isolation, the defendant's refusal to deal might well have sufficed to create a triable issue. Id., at 277, 88 S.Ct., at 1586. But the refusal to deal had to be evaluated in its factual context. Since the defendant lacked any rational motive to join the alleged boycott, and since its refusal to deal was consistent with the defendant's independent interest, the refusal to deal could not by itself support a finding of antitrust liability. Id., at 280, 88 S.Ct., at 1588.
Respondents correctly note 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 Cities Service, supra, 391 U.S., at 280, 88 S.Ct., at 1588. 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. Respondents in this case, 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.
Petitioners argue that these principles apply fully to this case. According to petitioners, the alleged conspiracy is one that is economically irrational and practically infeasible. Consequently, petitioners contend, they had no motive to engage in the alleged predatory pricing conspiracy; indeed, they had a strong motive not to conspire in the manner respondents allege. Petitioners argue that, in light of the absence of any apparent motive and the ambiguous nature of the evidence of conspiracy, no trier of fact reasonably could find that the conspiracy with which petitioners are charged actually existed. This argument requires us to consider the nature of the alleged conspiracy and the practical obstacles to its implementation.
IV
A.
A predatory pricing conspiracy is by nature speculative. Any agreement to price below the competitive level requires the conspirators to forgo profits that free competition would offer them. The forgone profits may be considered an investment in the future. For the investment to be rational, the conspirators must have a reasonable expectation of recovering, in the form of later monopoly profits, more than the losses suffered. As then-Professor Bork, discussing predatory pricing by a single firm, explained:
"Any realistic theory of predation recognizes that the predator as well as his victims will incur losses during the fighting, but such a theory supposes it may be a rational calculation for the predator to view the losses as an investment in future monopoly profits (where rivals are to be killed) or in future undisturbed profits (where rivals are to be disciplined). The future flow of profits, appropriately discounted, must then exceed the present size of the losses." R. Bork, The Antitrust Paradox 145 (1978).
See also McGee, Predatory Pricing Revisited, 23 J.Law & Econ. 289, 295-297 (1980). As this explanation shows, the success of such schemes is inherently uncertain: the short-run loss is definite, but the long-run gain depends on successfully neutralizing the competition. Moreover, it is not enough simply to achieve monopoly power, as monopoly pricing may breed quick entry by new competitors eager to share in the excess profits. The success of any predatory scheme depends on maintaining monopoly power for long enough both to recoup the predator's losses and to harvest some additional gain. Absent some assurance that the hoped-for monopoly will materialize, and that it can be sustained for a significant period of time, "[t]he predator must make a substantial investment with no assurance that it will pay off." Easterbrook, Predatory Strategies and Counterstrategies, 48 U.Chi.L.Rev. 263, 268 (1981). For this reason, there is a consensus among commentators that predatory pricing schemes are rarely tried, and even more rarely successful. See, e.g., Bork, supra, at 149-155; Areeda & Turner, Predatory Pricing and Related Practices Under Section 2 of the Sherman Act, 88 Harv.L.Rev. 697, 699 (1975); Easterbrook, supra; Koller, The Myth of Predatory Pricing—An Empirical Study, 4 Antitrust Law & Econ.Rev. 105 (1971); McGee, Predatory Price Cutting: The Standard Oil (N.J.) Case, 1 J.Law & Econ. 137 (1958); McGee, Predatory Pricing Revisited, 23 J.Law & Econ., at 292-294. See also Northeastern Telephone Co. v. American Telephone & Telegraph Co., 651 F.2d 76, 88 (CA2 1981) ("[N]owhere in the recent outpouring of literature on the subject do commentators suggest that [predatory] pricing is either common or likely to increase"), cert. denied, 455 U.S. 943, 102 S.Ct. 1438, 71 L.Ed.2d 654 (1982).
These observations apply even to predatory pricing by a single firm seeking monopoly power. In this case, respondents allege that a large number of firms have conspired over a period of many years to charge below-market prices in order to stifle competition. Such a conspiracy is incalculably more difficult to execute than an analogous plan undertaken by a single predator. The conspirators must allocate the losses to be sustained during the conspiracy's operation, and must also allocate any gains to be realized from its success. Precisely because success is speculative and depends on a willingness to endure losses for an indefinite period, each conspirator has a strong incentive to cheat, letting its partners suffer the losses necessary to destroy the competition while sharing in any gains if the conspiracy succeeds. The necessary allocation is therefore difficult to accomplish. Yet if conspirators cheat to any substantial extent, the conspiracy must fail, because its success depends on depressing the market price for all buyers of CEPs. If there are too few goods at the artificially low price to satisfy demand, the would-be victims of the conspiracy can continue to sell at the "real" market price, and the conspirators suffer losses to little purpose.
Finally, if predatory pricing conspiracies are generally unlikely to occur, they are especially so where, as here, the prospects of attaining monopoly power seem slight. In order to recoup their losses, petitioners must obtain enough market power to set higher than competitive prices, and then must sustain those prices long enough to earn in excess profits what they earlier gave up in below-cost prices. See Northeastern Telephone Co. v. American Telephone & Telegraph Co., supra, at 89; Areeda & Turner, 88 Harv.L.Rev., at 698. Two decades after their conspiracy is alleged to have commenced,13 petitioners appear to be far from achieving this goal: the two largest shares of the retail market in television sets are held by RCA and respondent Zenith, not by any of petitioners. 6 App. to Brief for Appellant in No. 81-2331 (CA3), pp. 2575a-2576a. Moreover, those shares, which together approximate 40% of sales, did not decline appreciably during the 1970's. Ibid. Petitioners' collective share rose rapidly during this period, from one-fifth or less of the relevant markets to close to 50%.