477 U.S. 242 (1986) Cited 235,794 times 38 Legal Analyses
Holding that summary judgment is not appropriate if "the dispute about a material fact is ‘genuine,’ that is, if the evidence is such that a reasonable jury could return a verdict for the nonmoving party"
475 U.S. 574 (1986) Cited 112,934 times 38 Legal Analyses
Holding that, on summary judgment, antitrust plaintiffs "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" them
439 U.S. 322 (1979) Cited 4,230 times 8 Legal Analyses
Holding that district courts have discretion to refuse to apply offensive non-mutual collateral estoppel against a defendant if such an application of the doctrine would be unfair
426 U.S. 438 (1976) Cited 2,477 times 67 Legal Analyses
Holding that materiality may be resolved at summary judgment "if the established omissions are so obviously important to an investor that reasonable minds cannot differ on the question of materiality"
Holding that “[d]efendants whose fraud prevents preexisting inflation in a stock price from dissipating are just as liable as defendants whose fraud introduces inflation into the stock price in the first instance”
15 U.S.C. § 78j Cited 12,488 times 165 Legal Analyses
Granting SEC power to establish rules to further statute forbidding manipulative or deceptive devices in connection with purchase or sale of securities