CSN News - Marathon Petroleum Corp. has a significant new shareholder. In a U.S. Securities and Exchange (SEC) filing, hedge fund Jana Partners...

Barry Rosenstein, founder of Jana Partners, is best known as an investor activist. But the hedge fund manager made some intriguing moves in the...

Activist investors Bill Ackman of Pershing Square and Barry Rosenstein of Jana Partners have both made headlines this year for their success in...

Barry Rosenstein, founder of New York-based hedge fund Jana Partners, is best known for his activist role in investing. But the hedge-fund manager...

Hedge fund firm Jana Partners took a page out of billionaire investor John Paulson's playbook by making a $122 million bet on gold in the fourth...

Barry Rosenstein's Jana Partners started a brand new position in their portfolio during the most recent third quarter. They bought more than...

Jana Partners slams Charles River Labs acquisition of China's WuXi PharmaTechInvestment firm Jana Partners LLC on Thursday urged shareholders of Charles River Laboratories International Inc. to reject the company's pending takeover of China's WuXi PharmaTech.Jana, which owns a ...