Micron's stock is soaring, but how much higher can the AI boom lift it? Memory chip maker Micron Technology (MU -1.25%) is grooving nowadays. The stock more than doubled in 52 weeks, including a 27% surge in the last month alone. It's fun to see a longtime favorite stock post record share prices and return to valuation ratios not seen since the height of the dot-com bubble, but will Micron shares stay at these lofty heights? Is Micron's stock surge built on solid ground or shifting sand? I'm not so sure, ac ...