We study the economic importance of accounting information as defined by the value that a sophisticated investor can extract from publicly available financial statements when optimizing a portfolio of U.S. equities. Our approach applies the elegant new parametric portfolio policy method of...

This study speaks to investment academics and practitioners by describing and analyzing the population of return predictive signals (RPS) publicly identified during the period 1970-2010. Our supraview brings to light a number of new facts about the population of RPS, including that more than 330...

Using a large database of news stories from newswires, national press, internet-based news outlets, news aggregators and local news channels, we study differences in the coverage of business news across types of press sources. We document that bad news business stories receive more coverage than...

Using a proprietary and unusually comprehensive database of hedge fund returns, we seek to identify abnormal performance consistent with opportunistic trading (e.g., bear raids) or synchronized actions (e.g., widespread forced liquidations) that could generate systemic risk. We find no evidence...