Biggest stock losers

Micron Technology makes memory chips, which means the company has to keep apace with the rapid evolution of those tech gadgets we love. The semiconductor industry was hit by a one-two punch in recent years: An oversupply of products exacerbated by the global economic downturn. Micron was hit hard -- in 2011, profits fell by 91%.

The company is also coping with the sudden death of former CEO, 51-year-old Steve Appleton, who crashed his stunt plane in Boise, Idaho on February 3. Appleton had been the company's CEO since 1994. In the wake of the accident, Micron promoted former chief operating officer Mark Durcan to CEO.

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