Shares of Nebius Group surged +9.2% to $167.33 on Tuesday, snapping a bruising October selloff, after French news outlet L'Informé reported that the company had raised €250 million (about $279 million) for its data center project near Lille in northern France. The bounce matters because it tests whether investors still trust the neocloud business model — renting out AI computing power — at a time when financing fears have hammered the sector.

  • A Drop in an €8 Billion Bucket. Nebius is investing €8 billion to convert a former Bridgestone tire factory into a major data center with a targeted capacity of 240 megawatts. The €250 million raised covers roughly 3% of that headline figure. Industry benchmarks from CBRE put AI data center construction costs at $10–$14 million per megawatt, implying $2.4–$3.6 billion for the full 240 MW facility.

A key risk is that the €250 million "still isn't enough to complete capacity on time." Investors cheered the headline, but the math shows most of the heavy spending lies ahead.

  • The First Phase Is the Real Test. The first phase, totaling 60 MW of capacity, is slated to open in December. Delivering on that timeline would prove Nebius can translate capital into revenue-generating infrastructure. Missing it would deepen the credibility gap that has already dragged the stock down roughly 35% over the past month, reflecting "growing anxiety about whether neocloud providers can finance their expansion as credit conditions tighten."

  • Big Contracts Provide a Safety Net — for Now. Nebius has sealed deals worth up to $27 billion with Meta and $17.3 billion with Microsoft for data center capacity.

The company plans to fund 60% of its growth from customer prepayments and the rest through equity and debt. That model works as long as hyperscaler demand stays hot, but CEO Arkady Volozh has acknowledged that "debt funding has become harder to secure."

  • Valuation Leaves No Room for Stumbles. Nebius reports 454% year-over-year revenue growth and multi-billion dollars in deferred revenue. Yet even after the selloff, the stock trades at a steep premium to the tech sector. Full-year 2025 revenue was just $529.8 million against a net loss of $446.7 million. Every construction delay or funding shortfall hits harder when the market is already pricing in flawless execution.

The €250 million is a confidence signal, not a solution. The December phase-one deadline is the next real catalyst — miss it, and the funding narrative unravels fast.