GameStop (GME) was trading at about $19 per share until January 12 or so. Then something changed. Trading volume increased dramatically and the price started going up. So much so that it more than doubled in less than two days, causing a lot of hype, more interest, and finally closing at $328 per share on January 29. That’s 17 times more than on January 12! How can it be? And what does it mean for long term investors?

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