Mondelez International, Inc. (MDLZ) jumped more than 7% in premarket trading after activist investor Bill Ackman (Trades, Portfolio) said he would pay approximately $5.5 billion for a 7.5% stake in the maker of Oreo cookies and Ritz crackers, buying about 120.3 million shares. The $74.59 billion market cap company also has another activist as a major shareholder: Nelson Peltz�s Trian Partners held 48.02 million shares valued at $1.73 billion at the end of March. Louis Moore Bacon (Trades, Portfolio) is an American hedge fund manager and trader who initiated a stake in the company with 155,000 shares during the fourth quarter of 2014 and added 400,000 shares in the first quarter of 2015. More recently, Ken Fisher (Trades, Portfolio) has taken a long position in the stock, adding 8,909 shares in the second quarter of 2015. On the other hand, on July 31, Goldman Sachs (GS) downgraded the company to "Hold" from "Buy." Further, Mario Gabelli (Trades, Portfolio) has reduced his stake to 3,202,957 shares from 3,249,161 shares held at the end of the... More