Plug Power stock popped last week, but it has been trending lower over the past few days. Investors may be more interested in Bloom Energy after its deal with Oracle than in Plug Power at this point.

Climbing 10.5% last week, PlugPower (NASDAQ: PLUG) stock showed some pep in the middle of July. This week, however, the hydrogen and fuel cell stock isn't extending the gain. Although the company didn ...