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ARTICLE · 27 NOVEMBER 2023

SEC Defeats Summary Judgment In Insider-Trading Suit Alleging "Shadow Trading"

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The SEC defeated a motion for summary judgment brought by a defendant whom the SEC accused of engaging in insider trading based on news about a not-yet-public corporate acquisition...

United StatesCorporate/Commercial Law
Jonathan Richman
Jonathan Richman
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The SEC defeated a motion for summary judgment brought by a defendant whom the SEC accused of engaging in insider trading based on news about a not-yet-public corporate acquisition when he purchased securities of a company not involved in that deal. The November 20, 2023 decision in SEC v. Panuwat (N.D. Cal.) keeps alive the SEC's theory of "shadow trading," which involves trading the securities of a public company that is not the direct subject of the material nonpublic information ("MNPI") at issue.

The Panuwat decision does not appear to break new ground under the misappropriation theory of insider trading in light of the particular facts alleged. But the "shadow trading" theory warrants attention because it can potentially have wide-ranging ramifications for traders by broadening the scope of the types of nonpublic information that might be deemed material.

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