David Siegel is co-chairman of Two Sigma, where he pursues a lifelong interest in building intelligent computational systems. Two Sigma is a financial services company using innovative technology and data science to optimize economic outcomes. In 2011, David founded Siegel Family Endowment to pursue his philanthropic interests, supporting organizations that will understand and shape the impact of technology on society. David sits on the board of several organizations including MIT, Carnegie Hall, and Cornell Tech.