David Hirschfeld is currently the Global Head of Back Office Securities Data at Thomson Reuters. Previous to this role, he was Managing Director and Head of the Times Series Practice Area within Morgan Stanley. During his more than 30 years in the Financial Markets, he has had a variety of both trading, analytical, operational and technology jobs. These jobs have been at both buy side (Citadel Investment and Tudor Investment) and sell side (Morgan Stanley and Merrill Lynch) institutions. In his trading capacity, he has worked as a derivatives floor trader, an Index arbitrageur and a "black box" systems trader. He holds an undergraduate degree in Economics from Duke University as well as a Masters Degree in Economics from the University of Chicago.