A new loan has investors gassing up their portfolios with this hydrogen stock. After plunging 7% last week, Plug Power (PLUG 29.07%) stock has been soaring to start this week. The hydrogen and fuel cell stock climbed 13% yesterday, and it's poised to lock in an even greater gain today thanks to the company's announcement that it has received a government loan guarantee. As of 10:34 a.m. ET, shares of Plug Power have ripped 34.8% higher. Looking into the government loan Plug Power announced today that it has ...