Why Plug Power's Stock Plunged Today

The holiday shopping season is officially upon us, but one thing not appearing on investors' buy lists today is the stock of fuel cell leader, Plug Power (NASDAQ: PLUG). Extending the slide which has seen shares tumble since Thanksgiving, shares of Plug Power plummeted 7.9% today. Investors' belief that Plug Power is poised for explosive growth as the hydrogen economy takes shape over the coming years has driven the stock to meteoric heights over the past two years.