Hedge fund titan’s surefire bet turns into a $4 billion loss

A little over two years ago, William A. Ackman, one of Wall Street’s brashest and most self-assured hedge fund managers, was on top of the world. A billionaire before he hit 50, he was generating double-digit gains for his investors and raking in hundreds of...

EBay is taking on Amazon Prime and Wal-Mart in guaranteed delivery, free shipping

The e-commerce battle to get consumers what they want, when they want it, rages on. On Monday eBay announced that this summer its shopping platform will guarantee three-day delivery in the U.S. on more than 20 million items. Millions of those eligible items will also...