Activist investor Bill Ackman's hedge fund has increased its investment in Valeant, and signaled it may play a greater role in its strategy.» Read More
Soros Fund Management exited its bet on Herbalife, the nutrition company that rival investor William Ackman has called a fraud.
At an event honoring Buffett's 50 years at Berkshire Hathaway, Bill Ackman openly criticized Buffett for his stake in Coca-Cola.
As of last week, Philidor Rx Services has stopped adjudicating insurance claims for drugs, Valeant CEO Mike Pearson said.
Just as it seemed like 2015 would be a total wipeout for hedge funds, October brought the industry some life.
Pershing Square's Bill Ackman has sent a letter to Valeant Chairman and CEO Michael Pearson, expressing support of his leadership.
October brought an 8.4 percent rally in the S&P. Yet some major money managers may have struggled to even come close to those levels.
Valeant Pharmaceuticals said it has formed a committee to review allegations against the company.
Activist investor Bill Ackman made a huge bet on Valeant Pharmaceuticals Wednesday
Former Mayor Michael Bloomberg's friends are calling on him to throw his hat in the presidential race, The New York Times reports.
Rocky start on Wall Street
Market tumult has delivered a hit to a number of areas, notable among them hedge funds, which have seen a promising year turn south in a hurry.
The billionaire tells CNBC he's more bullish on stocks based on valuations than fellow hedge fund titan David Tepper. Ackman also talks Mondelez and his Herbalife short.
Some of the names on the move ahead of the open.
Snack maker Mondelez International will spend more on advertising its brands, increase healthier offerings and expand its e-commerce business.
Bill Ackman's Pershing Square fell 13.1 percent this month, leaving the fund down 4.3 percent for the year.
CNBC asked several hedge fund managers what advice they would give to the average investor in this extremely volatile market.
Forget the feeding frenzy!
Mondelez stock gains after news that Bill Ackman has taken a $5.5 billion stake in snack maker and is considering pushing for a takeover.
Herbalife, the embattled nutrition and supplement company, posted higher-than-expected earnings and also raised its guidance for the year.
Hillary Clinton decried the effects of some activist investors, calling out firms that have seen involvement from Carl Icahn and others.