Congressional Research Service, 31 July 2009
Until the current financial crisis, the SEC did not view short selling of large, blue-chip stocks as a problem. In July 2008, however, the SEC temporarily banned naked short sales of the stock of Fannie Mae, Freddie Mac, and 17 other large financial institutions. On September 18, 2008, the SEC banned all short selling of the shares of more than 700 financial companies in an emergency action that expired on October 8, 2008. On October 1, 2008, the SEC adopted an interim rule requiring short sellers’ brokers to actually borrow shares to deliver to buyers, within one day after the expiration the normal three-day settlement time frame. The rule was made permanent on July 27, 2009, and it applies to all stocks. This report will be updated as events warrant.
PDF (10 Pages): Paper CRS Regulation on Naked Short Selling