Shares of Micron Technology are tumbling on a Bloomberg report that Korean rival SK Hynix will build a new DRAM memory chip factory in South Korea to meet growing demand for mobile devices.
MU is down 7%, its steepest drop in 2 months. But despite today's selloff, investors who have held the stock all year still have plenty to smile about.
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With a 2013 gain of 236% Micron is the 3rd-best performing stock in the S&P 500, right behind Netflix and Best Buy:
Top S&P 500 Stocks in 2013