Discover (DFS -3.2%) sells off despite beating earnings and a dividend boost. Spooking investors are worries the company has seen the best of credit improvements. Discover released just $68M in reserves into the profit column in FQ4 against $359M in FQ3. "It's going to be harder for card stocks to outperform over the next 6-12 months," says Donald Fandetti from Citigroup. DFS +24.5% YTD.