Keywan Rasekhschaffe, PhD, is a portfolio manager at Quantbot Technologies, LP. Prior to joining Quantbot he was a senior quantitative strategist at Gresham Investment Management LLC and he oversaw quantitative research at System Two Advisors LP. He was a Chazen Visiting Scholar at Columbia Business School and earned his Ph.D. at the University of Lugano, and received his MBA from the University of Oxford. He holds a joint BSc in Politics and Economics from the University of Bristol. His research is focused on asset pricing anomalies in the macro and equities space and applied machine learning methods. His article Machine Learning for Stock Selection was recently published in the Financial Analysts Journal.