IRENE ALDRIDGE is President and Managing Director, Research of AbleMarkets, a company that provides Big Data services to capital markets. She is also a visiting professor at Cornell University. More information at irenealdridge.com MARCO AVELLANEDA, PHD, is associated with Finance Concepts, a consulting firm he founded in 2003 and is a faculty member at New York University-Courant. He is regularly published in scientific journals like Quantitative Finance, Risk Magazine, and the International Journal of Theoretical and Applied Finance. More information at marco-avellaneda.com