472 U.S. 299 (1985), Supreme Court of the United States
Bateman Eichler, Hill Richards, Inc. v.
In a private damages action under §10(b) and Rule 10b-5, may defendants invoke the equitable defense of in pari delicto to bar recovery by plaintiffs who knowingly traded on material, nonpublic information, and if so, under what conditions?
In a private securities fraud action, the equitable defense of in pari delicto may bar a plaintiff's recovery only if: (1) as a direct result of his own actions, the plaintiff bears at least substantially equal responsibility for the violations he seeks to redress; and (2) preclusion of the suit would not significantly interfere with the effective enforcement of the securities laws and the protection of the investing public. Equitable defenses must be applied in light of the remedial and deterrent purposes of the federal securities laws and are inappropriate where they would undermine those statutory policies.
The Court held that in pari delicto is not an automatic bar to Rule 10b-5 claims by tippees who knowingly traded on material, nonpublic information. Instead, the defense is available only where the plaintiff bears at least substantially equal responsibility for the securities law violations and where barring the suit would not significantly impair enforcement of the securities laws. The Court remanded for application of this standard.
Bateman Eichler is foundational for understanding how equitable defenses intersect with federal statutory policy in securities litigation. It establishes a structured, policy-sensitive test for in pari delicto in §10(b)/Rule 10b-5 actions, ensuring that private suits continue to deter misconduct while preventing recovery by plaintiffs whose culpability is at least on par with defendants. The decision influences later cases, including Pinter v. Dahl, which borrowed its approach to plaintiff fault in the §12 context, and it is routinely cited in arguments about comparative fault, deterrence, and the role of private enforcement in securities regulation.