Ballmer-bashing fund manager ups Microsoft stake

David Einhorn, the hedge-fund manager who called for Steve Ballmer's head three months ago, just increased his stake in Microsoft.

Einhorn's Greenlight Capital reported holding 14.8 million shares of Microsoft as of June 30, according to a regulatory filing dated yesterday. That's up from 9.1 million shares Greenlight held at the end of the previous reporting period, March 31. The Wall Street Journal first reported Greenlight's increased stake.