Larry Harris holds the Fred V. Keenan Chair in Finance in the Marshall School of Business at the University of Southern California. He is currently on leave to the US Securities and Exchange Commission where he serves as its Chief Economist and Director of the Office of Economic Analysis. He received his Ph.D. in Economics from the University of Chicago in 1982, where he examined price-volume relations in futures and securities markets.

Professor Harris is an expert in market microstructure and investment management. He has written extensively about exchange trading rules, volatility, stock index markets, and market regulation; and he consults to traders, exchanges, investment banks, and regulators. His work is highly cited and widely appreciated for his clarity of presentation. Professor Harris is also a very popular teacher who has created highly innovative courses on trading for MBA and undergraduate students.

Harris has served as an associate editor of the Journal of Finance, the Review of Financial Studies, and the Journal of Financial and Quantitative and Analysis. He has also served on the editorial board of the Financial Analysts Journal. He currently serves as the research coordinator of the Institute for Quantitative Research in Finance® (the Q Group®). His past professional service includes one-year leaves to the U.S. Securities and Exchange Commission and to the New York Stock Exchange, Inc.