Learn why Citigroup's Vikram Bagri thinks Plug Power stock is a clear sell right now.
The little hydrogen fuel cell maker still has a lot to prove.
This company told investors it might go out of business.
If even Plug Power can't earn profits from fuel cell hydrogen, what hope is there for Bloom Energy and FuelCell Energy?
Plug Power stock once rose 3,600% in value. Can shares double again over the next 5 years?
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Investments in green energy are booming, but alternative energy stocks like ENPH and PLUG are underperforming significantly. However, analysts have no problems choosing a favorite.
The company's new plant is online. Is that enough to make the stock a buy?
One Wall Street firm thinks Plug Power stock will soon drop to new multi-year lows.
The company issued a warning last year that often precludes bankruptcy.
Bloom Energy has a bigger business, a bigger margin of safety, and has shown it can make money.