Watching Insider Trading Law Wobble: Obus, Newman, Salman and Two Martomas

46 Pages Posted: 22 Nov 2019

Date Written: November 19, 2019


“The crime of insider trading,” Judge Jed Rakoff has said, “is a straightforward concept that some courts have somehow managed to complicate.” In the last eight years or so, insider trading law has wobbled visibly (in the Second Circuit in particular) in applying the standard for tipper-tippee liability originally set in the Supreme Court’s Dirks decision in 1983: from Obus (2012) to Newman (2014), with a detour to the Supreme Court in Salman (2016), and most recently in two Martoma opinions (2017 and 2018). This essay is about the wobble, with particular attention to the question addressed in Martoma as to whether a gift of inside information to a stranger satisfies Dirks’ personal benefit test. This essay examines that question from many different angles — text, precedent, judicial archeology, purpose and so on — and comes out in favor of such liability. The main payoff is less from that particular conclusion, however, than from seeing the movement in contemporary insider trading law: shifting theories about to make sense of the doctrine and its creeping criminalization. The essay pays special attention to the contributions of Judge Rakoff, whose rulings offer up a series of deep thoughts and lamentations on the subject to his readers (or to the law-gods).

Keywords: insider trading, securities fraud

Suggested Citation

Langevoort, Donald C., Watching Insider Trading Law Wobble: Obus, Newman, Salman and Two Martomas (November 19, 2019). Available at SSRN: or

Donald C. Langevoort (Contact Author)

Georgetown University Law Center ( email )

600 New Jersey Avenue, NW
Washington, DC 20001
United States
202-662-9832 (Phone)
202-662-9412 (Fax)

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