Plug Power Inc. stock (NASDAQ: PLUG) heads into the final stretch of 2025 with the market still asking the same blunt question it’s been asking for years: can this hydrogen pioneer turn scale into sustainable margins before the next funding round becomes inevitable?As of Dec. 21, 2025 (a Sunday, with U.S. markets closed), PLUG last traded around $2.20. The stock remains deeply volatile, with heavy...