"Mr. Cohen and economists Christopher Malloy and Quoc Nguyen downloaded all the 10-K and 10-Q filings with the Securities and Exchange Commission from 1994 through 2014 and used textual-analysis software to create a similarity score showing how the language in corporate filings differed one period to the next.
They then looked at stock performance following filings. The finding: Shares of companies that had significant changes did much worse than those of companies that didn’t. This was particularly true when it came to changes in the risk factors section of 10-Ks."
WSJ: Hidden in Plain Sight: A Powerful Way to Beat the Market
No comments:
Post a Comment