J. Tomilson Hill is a billionaire financier and world-renowned art collector currently serving as the Chairman of Private Investments at Two Sigma and CEO of Two Sigma Real Estate. After a storied career as Vice Chairman of Blackstone, where he grew its hedge fund business to $75 billion, he transitioned to Two Sigma in 2021 to lead its data-driven private market strategies. In 2026, he remains a titan in the cultural sector as the Chairman of the Guggenheim Museum and founder of the Hill Art Foundation in Chelsea. His foundation’s early 2026 exhibition, The Lost Beauty of Humankind, highlights his signature approach of pairing Old Master works with contemporary photography to explore universal human dignity.

John Overdeck, cofounder and co-chairman of Two Sigma, is one of the key architects of quantitative hedge fund investing, bringing machine learning, distributed computing, and massive data science into the heart of portfolio management. After an award-winning math background and early leadership roles at D.E. Shaw and Amazon, he partnered with David Siegel in 2001 to build Two Sigma into a global multi-strategy platform managing tens of billions across equities, private investments, insurance tech, venture capital, and market-making. A champion of mathematics and education, Overdeck is also a leading philanthropist through the Overdeck Family Foundation, advancing STEM learning and research at scale.

David M. Siegel is an American computer scientist turned investor who co-founded Two Sigma Investments in 2001 alongside John Overdeck. With a PhD in Computer Science from MIT and early roles at D. E. Shaw and Tudor, Siegel helped build Two Sigma into a quant trading powerhouse managing roughly $60 billion in assets. He now serves as co-chairman and leads the firm’s technology and philanthropy initiatives through the Siegel Family Endowment.