A Study of Market-Wide Short-Selling Restrictions

This paper contributes empirical evidence to the on-going debate on short sales. Our examination of how market-wide short-sale restrictions affect aggregate market returns focuses on two main questions: What is the effect of short-sale restrictions on skewness, volatility, the probability of market crashes, and liquidity? What is the effect on the market expected return or cost of capital? We report new data on the history of short-selling and put option trading regulations and practices from 111 countries, and create a short-selling feasibility indicator for the analysis of stock market indices around the world. We find that when short-selling is possible, aggregate stock returns are less volatile and there is greater liquidity. When countries start to permit short-selling, aggregate stock price increases, implying lower a cost of capital. There is no evidence that short-sale restrictions affect either the level of skewness of returns or the probability of a market crash. Collectively, our empirical evidence suggests that allowing short-selling enhances market quality.

[1]  Sorin M. Sorescu,et al.  Why Do Option Introductions Depress Stock Prices? A Study of Diminishing Short Sale Constraints , 2001, Journal of Financial and Quantitative Analysis.

[2]  D. Hirshleifer,et al.  Sidelined Investors, Trading-Generated News, and Security Returns , 2001 .

[3]  J. Woolridge,et al.  Short Selling and Common Stock Prices , 1994 .

[4]  J. Stein,et al.  Aggregate Short Interest and Market Valuations , 2003 .

[5]  Campbell R. Harvey,et al.  Conditional Skewness in Asset Pricing Tests , 1999 .

[6]  Jerold B. Warner,et al.  Using daily stock returns: The case of event studies , 1985 .

[7]  Laura T. Starks,et al.  Short-Sale Restrictions and Market Reaction to Short-Interest Announcements , 1993, Journal of Financial and Quantitative Analysis.

[8]  Campbell R. Harvey,et al.  Foreign Speculators and Emerging Equity Markets , 1997 .

[9]  David M. Kreps,et al.  Speculative Investor Behavior in a Stock Market with Heterogeneous Expectations , 1978 .

[10]  Joseph J. Seneca.  SHORT INTEREST: BEARISH OR BULLISH?* , 1967 .

[11]  Douglas J. Skinner.  Options markets and stock return volatility , 1989 .

[12]  E. Stice,et al.  Short Interest: Explanations and Tests , 1990, Journal of Financial and Quantitative Analysis.

[13]  B. Dumas,et al.  The World Price of Foreign Exchange Risk , 1993 .

[14]  Gady Jacoby,et al.  On Asset Pricing and the Bid-Ask Spread , 2001 .

[15]  Duane J. Seppi,et al.  Common Factors in Prices, Order Flows and Liquidity , 1998 .

[16]  Jennifer S. Conrad.  The Price Effect of Option Introduction , 1989 .

[17]  Campbell R. Harvey,et al.  PREDICTABLE RISK AND RETURNS IN EMERGING MARKETS , 1999 .

[18]  Yan Zhang,et al.  The Information Content of Short Interest: A Natural Experiment , 2002 .

[19]  S. Ross.  Options and Efficiency , 1976 .

[20]  Patricia M. Dechow,et al.  Short-sellers, fundamental analysis, and stock returns , 2001 .

[21]  G. D'Avolio,et al.  The Market for Borrowing Stock , 2002 .

[22]  Russell P. Robins,et al.  Estimating Time Varying Risk Premia in the Term Structure: The Arch-M Model , 1987 .

[23]  Robert E. Verrecchia,et al.  Constraints on short-selling and asset price adjustment to private information , 1987 .

[24]  Assem Safieddine,et al.  An Empirical Investigation of Short‐Selling Activity Prior to Seasoned Equity Offerings , 1996 .

[25]  C. Jones.  SHORTING RESTRICTIONS, LIQUIDITY, AND RETURNS , 2002 .

[26]  Campbell R. Harvey,et al.  Emerging Equity Market Volatility , 1995 .

[27]  Paul R. Milgrom,et al.  Bid, ask and transaction prices in a specialist market with heterogeneously informed traders , 1985 .

[28]  Stephen Figlewski,et al.  The Informational Effects of Restrictions on Short Sales: Some Empirical Evidence , 1981, Journal of Financial and Quantitative Analysis.

[29]  P. Henry.  Stock Market Liberalization, Economic Reform, and Emerging Market Equity Prices , 2000 .

[30]  Campbell R. Harvey,et al.  Expected Returns and Volatility in 135 Countries , 1996 .

[31]  M. E. Ellis.  Globalization, Corporate Finance, and the Cost of Capital , 2000 .

[32]  Richard Roll,et al.  Commonality in Liquidity , 1999 .

[33]  Campbell R. Harvey,et al.  Time-Varying World Market Integration , 1994 .

[34]  Nicolas P. B. Bollen.  A note on the impact of options on stock return volatility 1 Previously titled The impact of Option , 1998 .

[35]  J. Stein,et al.  Differences of Opinion, Short-Sales Constraints, and Market Crashes , 2003 .

[36]  E. Miller.  Risk, Uncertainty, and Divergence of Opinion , 1977 .

[37]  Connie X. Mao,et al.  Stock Market Liberalization and the Information Environment , 2005 .

[38]  J. Wooldridge,et al.  A Capital Asset Pricing Model with Time-Varying Covariances , 1988, Journal of Political Economy.

[39]  Campbell R. Harvey,et al.  The Risk and Predictability of International Equity Returns , 1993 .

[40]  Stephen Figlewski,et al.  Options, Short Sales, and Market Completeness , 1993 .