Dupuy v. Dupuy

Background

This case asked the Justices to review a dispute about how careful investors must be to recover damages for securities fraud under a federal law and an SEC rule. The petition came from a Fifth Circuit decision, and the Supreme Court refused to take the case. After a prior Supreme Court decision called Ernst & Ernst, different federal appeals courts have announced conflicting rules. Some courts say plaintiffs are barred only if they acted recklessly or worse; others require plaintiffs to show they used due diligence in discovering problems; still others require only that plaintiffs act reasonably.

Reasoning

The central question is how much responsibility a private investor must bear for checking facts before suing under the securities rule. The Supreme Court declined to decide that issue here, so it left the appeals courts’ differing tests intact. The denial is procedural — the Court refused review — so it did not adopt a uniform rule or explain its view on the proper standard.

Real world impact

Because the Court refused to resolve the split, investors, brokers, and courts nationwide continue to follow different standards. That uncertainty affects how much work plaintiffs must do before filing suit, how costly and risky securities litigation will be, and how businesses allocate responsibility for verifying information. The denial is not a final ruling on the right standard and could be revisited in a future case.

Dissents or concurrances

Justice White dissented from the denial of review, urging the Court to take the case to clear up the conflicting rules. He argued a clear national standard would lower transaction costs and reduce complex, expensive litigation.