Popular speculative enterprise FuelCell Energy (NASDAQ:FCEL) — which specializes in fuel cell and electrolysis platforms for the decarbonization of power and the production of hydrogen — saw its shares pop on no company-specific news. Instead, the return of the meme-trading phenomenon has likely catapulted FCEL stock. On Sunday, Keith Gill — better known by his online moniker “Roaring Kitty” — posted a series of social media messages implying strongly that he was ready to take the helm of the meme-stock mov ...