Advanced Micro Devices
CEO: Rory Read
June 28, 2013: $4.08
Sept. 30, 2013: $3.81
AMD's stock performance in the first half of 2013 was second only to Hewlett-Packard's. But like HP, AMD's shares couldn't maintain their gains in the third calendar quarter and fell 6.6 percent.
AMD, like arch-rival Intel, has been hurt by the slowdown in sales of personal computers, despite efforts to diversify into new markets.