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ARTICLE · 17 AUGUST 2026

Securities And Derivative Litigation: Report

Dechert
Dechert
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Courts are grappling with how to apply traditional market efficiency tests to meme stocks and pump-and-dump schemes, while recent circuit court decisions reshape the evidentiary burden for proving damages at class certification. The Supreme Court has also weighed in on the SEC's disgorgement authority, resolving a critical circuit split on whether investor harm must be proven.

United StatesCorporate/Commercial Law

Key Takeaways

  • Meme Stock and Pump-and-Dump Class Actions. Courts remain pided on whether social media driven stock-price movements can satisfy market-efficiency requirements for class certification. 
  • Damages Proof at Class Certification (Boeing and First Energy). The Fourth Circuit’s reversal of class certification in Boeing is a significant win for defendants, holding that plaintiffs must present an actual, case-specific damages methodology to satisfy Comcast v. Behrend. Defendants should leverage this decision to challenge underdeveloped expert damages models at the class certification stage. The Sixth Circuit will soon weigh in on First Energy.
  • SEC Disgorgement Without Proof of Investor Harm (Sripetch v. Securities and Exchange Commission). The Supreme Court unanimously heldthat the SEC may recover a wrongdoer’s unlawful profits through disgorgement, without proving that inpidual investors suffered a specific financial loss. Although Sripetch broadens the SEC’s disgorgement

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