Plug Power Inc. (NASDAQ:PLUG) is one of the best penny stocks to buy according to hedge funds. On October 7, Plug Power Inc. (NASDAQ:PLUG) was downgraded to a Hold from a Buy by Clear Street with a price target of $3.50. Plug Power (PLUG) Surges 8.5% as Fuel Cell Market Begins to Boom The rating update came after Plug Power Inc. (NASDAQ:PLUG) announced the succession of new CEO Jose Luis Crespo, who would replace Andy Marsh in the role in March next year. The analyst told investors that the current valu ...