Two Sigma

Overview

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].

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. [8]

Business address: 100 6th Avenue, New York, New York, 10013. [11]

Growth & 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. [3]

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. [4]

LinkedIn lists 2,429 people working at Two Sigma. [9]