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BUSINESS · OCT 19, 2026

Two Sigma Co-Founders Clash Amid Billionaire's Divorce Trial

John Overdeck faces a $2.2 billion divorce settlement and a power struggle with co-founder David Siegel, triggering redemptions from major institutional investors.

Two Sigma co-founder John Overdeck is navigating a simultaneous legal battle in family court and a leadership struggle within the $85 billion quant-trading firm. In a New Jersey divorce trial, his estranged wife, Laura Overdeck, is seeking a cash payment of approximately $2.2 billion, which represents 35% of his stake in the company.

Overdeck testified that this payout could jeopardize his voting parity with co-founder David Siegel. The two have clashed for years over leadership, compensation, and firm governance. This internal rift has already caused significant instability, leading to the resignation of co-CEO Scott Hoffman and ongoing arbitration regarding the role of Seth Platt.

Despite reporting record assets under management, the governance conflict has prompted major institutional investors to withdraw funds. The State of Wisconsin Investment Board fully redeemed its investments, and the Public Employees Retirement Association of New Mexico redeemed roughly $100 million, citing organizational uncertainty.


Reported across 2 outlets
Actors
John OverdeckDavid A. SiegelTwo SigmaPublic Employees Retirement Association of New Mexico

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