Charles M. Jones is the Robert W. Lear Professor of Finance and Economics and chair of the finance and economics division at Columbia Business School, where he has been on the faculty since 1997. Professor Jones studies the structure of securities markets, liquidity, and trading costs, and he is particularly noted for his research on short sales, algorithmic trading, and the variation in liquidity over time. His published articles appear in outlets ranging from the Journal of Finance to Barron’s. Jones has served as the visiting economist at the New York Stock Exchange, and for several years he has been a visiting scholar at the Federal Reserve Bank of New York. Jones has also been on the faculty at Princeton University, and prior to doing graduate work at the University of Michigan, where he received his Ph.D. in finance in 1994, he was an investment banking analyst at Merrill Lynch. At Columbia, Jones regularly teaches “Debt Markets,” a popular elective course targeted to MBA students intending to work in fixed income, debt capital markets, or investment banking, and he has received the Singhvi Prize for scholarship in the classroom.