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http://ssrn.com/abstract=891439
 
 

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Trading Restrictions and Stock Prices


Robin M. Greenwood


Harvard Business School - Finance Unit; National Bureau of Economic Research (NBER)

January 4, 2007

HBS Finance Working Paper No. 05-079

Abstract:     
Firms can manipulate their stock price by limiting the ability of their investors to sell. I examine a series of corporate events in Japan in which firms actively reduced their float - the fraction of shares available to trade - for periods of one to three months, locking investors into their long positions. Standard theory predicts that the greater are the restrictions, the greater is the impact of trading on price. Particularly severe restrictions are associated with positive event returns of over 30 percent, most of which are reversed when the restrictions are removed. Firms are more likely to issue equity or redeem convertible debt during the restricted period, suggesting strong incentives for manipulation.

Number of Pages in PDF File: 44

Keywords: Asset Pricing, Float, Short sales constraints, Behavioral Finance, Limits to arbitrage

JEL Classification: G10, G11, G13

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Date posted: March 17, 2006  

Suggested Citation

Greenwood, Robin M., Trading Restrictions and Stock Prices (January 4, 2007). HBS Finance Working Paper No. 05-079. Available at SSRN: http://ssrn.com/abstract=891439 or http://dx.doi.org/10.2139/ssrn.891439

Contact Information

Robin M. Greenwood (Contact Author)
Harvard Business School - Finance Unit ( email )
Boston, MA 02163
United States
617-495-6979 (Phone)
National Bureau of Economic Research (NBER)
1050 Massachusetts Avenue
Cambridge, MA 02138
United States
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