Bill Ackman's Pershing Square takes big stake in Chipotle
This 130-year-old retailer is the most hated stock in the U.S.
Icahn says he asked the FTC permission to buy 50% of Herbalife
UPDATE: U.S. stock futures waver with Fed beige book, Apple news on deck
MARKET SNAPSHOT: U.S. Stock Futures Waver With Fed Beige Book, Apple News On Deck