Today, Dec. 31, 2025, a cautious analyst upgrade spotlights Plug Power's high‑risk hydrogen turnaround and funding puzzle.NASDAQ : PLUGPlug PowerToday's Change( 1.55 %) $ 0.03Current Price$ 1.97Key Data PointsMarket Cap$2.7BDay's Range$ 1.94 - $ 2.0552wk Range$ 0.69 - $ 4.58Volume81MAvg Vol127MGross Margin-7128.74 %Plug Power (PLUG +1.55%), which develops hydrogen fuel cell and electrolyzer systems, closed Wednesday’s session at $1.97, up 1.55%. Plug Power IPO'd in 1999 but has fallen 99% since going public ...