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Market Declines: Is Banning Short Selling the Solution?


Robert H. Battalio


University of Notre Dame - Department of Finance

Hamid Mehran


Federal Reserve Bank of New York

Paul H. Schultz


University of Notre Dame - Department of Finance

September 1, 2011

FRB of New York Staff Report No. 518

Abstract:     
In response to the sharp decline in prices of financial stocks in the fall of 2008, regulators in a number of countries banned short selling of particular stocks and industries. Evidence suggests that these bans did little to stop the slide in stock prices, but significantly increased costs of liquidity. In August 2011, the U.S. market experienced a large decline when Standard and Poor’s announced a downgrade of U.S. debt. Our cross-sectional tests suggest that the decline in stock prices was not significantly driven or amplified by short selling. Short selling does not appear to be the root cause of recent stock market declines. Furthermore, banning short selling does not appear to prevent stock prices from falling when firm-specific or economy-wide economic fundamentals are weak, and may impose high costs on market participants.

Number of Pages in PDF File: 20

Keywords: short selling, down grade

JEL Classification: G01, G12, G14, G18

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Date posted: October 7, 2011 ; Last revised: September 18, 2012

Suggested Citation

Battalio, Robert H., Mehran, Hamid and Schultz, Paul H., Market Declines: Is Banning Short Selling the Solution? (September 1, 2011). FRB of New York Staff Report No. 518. Available at SSRN: http://ssrn.com/abstract=1939884 or http://dx.doi.org/10.2139/ssrn.1939884

Contact Information

Robert H. Battalio
University of Notre Dame - Department of Finance ( email )
P.O. Box 399
Notre Dame, IN 46556-0399
United States
574-631-9428 (Phone)
574-631-5255 (Fax)
Hamid Mehran (Contact Author)
Federal Reserve Bank of New York ( email )
33 Liberty Street
New York, NY 10045
United States
212-720-6215 (Phone)
Paul H. Schultz
University of Notre Dame - Department of Finance ( email )
P.O. Box 399
Notre Dame, IN 46556-0399
United States
219-631-3338 (Phone)
219-631-5255 (Fax)
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