With significant hedge fund interest and upside potential, Nebius Group N.V. (NASDAQ:NBIS) secures a spot on our list of the 15 best AI stocks to watch in December 2025. Nebius Group N.V. (NBIS) Co-Founder Sees Huge AI Demand Ahead Backed by Mega Microsoft, Meta Deals Photo by Maximalfocus on Unsplash Appearing in an interview with Reuters on December 3, 2025, Nebius Group N.V. (NASDAQ:NBIS)’s co-founder Roman Chernin spoke with optimism. He argued that demand for AI infrastructure can potentially expan ...