Warburg unwinds

After more than a decade as a major investor in InterMune Inc. (NASDAQ:ITMN), Warburg Pincus disclosed in an SEC filing last week that it has almost entirely exited the pulmonary and infectious disease play.

In May, the private equity firm said it was planning to dispose of its 9.5 million InterMune shares (16.1%). At June 8, it held 16,841 shares, or less than 1%...