TY - JOUR AU - Jones,Charles M. AU - Lamont,Owen A. TI - Short Sale Constraints and Stock Returns JF - National Bureau of Economic Research Working Paper Series VL - No. 8494 PY - 2001 Y2 - October 2001 UR - http://www.nber.org/papers/w8494 L1 - http://www.nber.org/papers/w8494.pdf N1 - Author contact info: Charles M. Jones Columbia University Uris Hall, Room 801 New York, NY 10027 Tel: 212 854 4109 E-Mail: cj88@columbia.edu Owen Lamont Department of Economics Harvard University Cambridge MA 02138 E-Mail: owen.lamont@yale.edu AB - Stocks can be overpriced when short sale constraints bind. We study the costs of short selling equities, 1926-1933, using the publicly observable market for borrowing stock. Some stocks are sometimes expensive to short, and it appears that stocks enter the borrowing market when shorting demand is high. We find that stocks that are expensive to short or which enter the borrowing market have high valuations and low subsequent returns, consistent with the overpricing hypothesis. Size-adjusted returns are one to two percent lower per month for new entrants, and despite high costs it is profitable to short them. ER -