Nebius Group (NBIS) Jumps 14% on $643 Million AI Startup Acquisition
Nebius Group NV (NASDAQ:NBIS) is one of the 10 Stocks Exploding in a Bleeding Market, and Monday’s action made that label hard to argue with.
The stock surged for a second consecutive day, climbing 14.20% to close at $176.42 per share. The rally came as investors snapped up shares following news that Nebius would acquire an AI startup to complement its existing model lineup, while also positioning ahead of the company’s upcoming earnings report.
In a note to investors, Nebius Group said it would release its financial and operating results before the market opens on Wednesday, May 13, followed by a conference call to discuss the numbers.
Photo by Carol Gauthier on Shutterstock
Last week, Nebius announced it would acquire Eigen AI, a specialized startup focused on what it calls “Artificial Efficient Intelligence,” for $643 million.
According to the company, Eigen AI is expected to supercharge Nebius’s Token Factory—a managed inference platform for production AI—by combining a battle-tested optimization stack with Nebius’s global compute capacity and AI cloud platform. The deal will also bring in elite inference research talent to strengthen the company’s in-house R&D capabilities.
Once the acquisition closes, Eigen AI’s inference and post-training optimization layers will be integrated directly into Nebius Token Factory, which already offers enterprise-grade autoscaling endpoints and fine-tuning pipelines across all major open-source models.
“We are operating in a capacity-scarcity world where AI builders need optimized inference and infrastructure scale,” said Roman Chernin, Chief Business Officer of Nebius Group. “The integration of Eigen AI’s optimization capabilities and founding team will establish Nebius Token Factory at the frontier of inference, offering customers market-leading model performance and unit economics with massive compute capacity to back it at scale.”
Market Reaction and Analyst Take
The market clearly liked what it heard. But not everyone is convinced the rally is sustainable.
“This is a smart bolt-on acquisition, no doubt,” said David Tran, a tech analyst at Summit Capital Advisors. “But $643 million is a lot for a startup that’s still proving its commercial traction. Investors are betting on the narrative, not the numbers—at least for now.”
Elena Marchetti, a portfolio manager at Horizon Equity Partners, struck a more cautious tone: “Nebius is doing the right thing by building out its inference stack—that’s where the real value is in AI right now. But the stock is already pricing in a lot of perfection. I’d want to see earnings before adding to positions.”
Jake Morrison, a retail investor and frequent commentator on social media, was less diplomatic: “Another day, another AI acquisition. These guys are spending like they’re printing money. Meanwhile, the market is bleeding everywhere else. This feels like a classic ‘buy the rumor, sell the news’ setup. I’m staying on the sidelines.”
While we acknowledge the potential of NBIS as an investment, we believe certain AI stocks offer greater upside potential and carry less downside risk. If you're looking for an extremely undervalued AI stock that also stands to benefit significantly from Trump-era tariffs and the onshoring trend, see our free report on the best short-term AI stock.
READ NEXT: 33 Stocks That Should Double in 3 Years and Cathie Wood 2026 Portfolio: 10 Best Stocks to Buy.
Disclosure: None. Follow Insider Monkey on Google News.