Micron investor’s dilemma: hold ‘em or sell?

Memory chip maker Micron Inc. saw its stock climb nearly 255% last year and it was among the top performing company’s on the S&P 500, as it benefitted from higher prices and a tighter market for its products. But with an Apple Inc.-like price-to- earnings ratio, it’s hard for investors to know when is a good time to take some profits.