Valueact Capital

The London-based hedge fund was also among the top performers last year.
The troubled drugmaker takes another plunge as it reduces guidance. Here’s a quick survey of the firms that are taking a bath and those that look like geniuses.
The ValueAct Capital founder works with the Posse Foundation to help at-risk students succeed.
The investment firm relied on an SEC rule that lets investors delay disclosing investment stakes in companies in which they are building big stakes.
Hedge fund managers who employ the strategy are agitating their way to big gains in 2013.
ValueAct Capital’s Jeff Ubben is turning up the heat on Moody’s. Ubben disclosed in a regulatory filing Wednesday, after the stock market closed, that he has raised his stake in the debt rating agency’s common stock to 6.1 percent.