On April 16, 2010 the Securities and Exchange Commission (SEC) filed a civil complaint against Goldman Sachs in the U.S. District Court for the Southern District of New York. The complaint alleged that Goldman violated the anti-fraud provisions of the federal securities laws, in connection with...

We study decisions to sell nonexcludable private information in the presence of a trading opportunity. Sell-side agents heighten competition among agents who buy their signals to combine with their own for proprietary trading purposes and thereby promote financial market efficiency. This result...