Two Sigma Investments, LP is a quantitative investment firm headquartered at 100 Avenue of the Americas in New York[1][4]. Founded in 2001 by John Overdeck, David Siegel, and Mark Pickard[4], the firm applies machine learning, natural language processing, and distributed computing to trading strategies[1][3]. Two Sigma operates divisions spanning private investments, venture capital, institutional advisory, and high-frequency brokerage[3]. Assets under management reached approximately $70 billion in 2025, growing from $8 billion in November 2011[5].
In August 2024, co-founders Overdeck and Siegel stepped down as co-CEOs and were replaced by Carter Lyons and Scott Hoffman, with the founders remaining as co-chairmen[6]. The firm sold its portfolio analytics product Venn to Insight Partners in January 2026 and spun out its venture arm as independent Deviation Capital with $2 billion in assets in May 2026[7]. Two Sigma faced an SEC investigation in 2023 regarding unauthorized modifications to trading models[8], and the Department of Justice brought fraud charges in 2025 against a former quantitative researcher connected to $165 million in client losses[8].
Leadership & org chart
Alumni
Recent developments
- Co-founders Overdeck and Siegel stepped down as co-CEOs in August 2024 and were replaced by Carter Lyons and Scott Hoffman, remaining as co-chairmen.[6]
- Sold portfolio analytics product Venn to Insight Partners in January 2026, and spun out its former venture arm as independent Deviation Capital with $2 billion in assets in May 2026.[7]
- Faced an SEC investigation in 2023 over unauthorized modifications to trading models, and in 2025 the Department of Justice brought fraud charges against a former quantitative researcher tied to $165 million in client losses.[8]
Alumni 1 went on to found or lead
- Max SperoSoftware Engineering Intern→Cofounder & CEO at Pangram Labs
- Rahul NirmalVice President
Traction
- Founded in 2001 by John Overdeck, David Siegel and Mark Pickard with seed funding from Paul Tudor Jones; headquartered at 100 Avenue of the Americas in New York City.[4]
- Assets under management reached roughly $70 billion in 2025, up from $8 billion in November 2011, $32 billion at the end of 2015, $50 billion in October 2017 and $60 billion in May 2019.[5]
Product
- Two Sigma Investments is a New York hedge fund that applies artificial intelligence, machine learning and distributed computing to trading strategies, with divisions spanning private investments, venture capital, institutional advisory and high-frequency brokerage.[3]
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