TLDR: Nebius Group N.V. has announced a five-year, $17.4 billion agreement with Microsoft to provide GPU infrastructure for AI workloads, with potential to reach $19.4 billion. This landmark deal has caused Nebius’s stock to surge by up to 50% and triggered a significant rally in AI mining stocks, as investors recognize the growing demand for large-scale computing infrastructure in the artificial intelligence sector.
Amsterdam-based AI infrastructure provider, Nebius Group N.V. (NASDAQ:NBIS), made a significant announcement on September 8, 2025, revealing a five-year agreement with technology giant Microsoft Corporation (MSFT) valued at a minimum of $17.4 billion. This transformative deal is set to provide GPU infrastructure capacity to support Microsoft’s burgeoning artificial intelligence workloads, with the potential for the total contract value to increase to $19.4 billion through additional services and capacity purchases.
The agreement underscores the explosive demand for GPU compute from hyperscalers, positioning Nebius as a primary beneficiary of the escalating AI spending boom. The infrastructure will be supplied from Nebius’s new data center located in Vineland, New Jersey. Financing for this substantial build-out is planned through Nebius’s existing cash flows and debt raised against the Microsoft contract, a strategy designed to minimize equity dilution.
Following the announcement, Nebius’s stock experienced a dramatic surge, increasing by approximately 50% in early trading on September 9, 2025, and contributing to a market capitalization exceeding $21 billion by September 2025. Analysts have hailed the deal as a ‘game-changer’ for NBIS, validating its growth strategy and highlighting the massive demand for GPU compute.
The ripple effect of this deal extended beyond Nebius, sending AI mining stocks soaring. Companies with large-scale computing infrastructure, traditionally associated with cryptocurrency mining, saw significant gains. Bitfarms led the sector with a 22% stock price increase, while Cipher Mining rose by 20%. Other notable miners such as IREN, Hut 8, Riot Platforms, and TeraWulf also posted mid-teen percentage gains. This widespread rally reflects investor enthusiasm for companies capable of providing the essential computing power for AI, as many mining firms are strategically pivoting towards AI infrastructure and data center services to diversify revenue streams.
Despite the overwhelmingly positive market reaction, some analysts caution about potential risks. Nebius has previously disclosed high customer concentration, and this $17.4 billion contract is expected to dominate its revenue mix for years. Furthermore, the agreement includes a clause allowing Microsoft to terminate a tranche of services after a grace period if Nebius fails to meet delivery milestones or provide alternative capacity, creating pressure on management for flawless execution.
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Nevertheless, the deal is seen as a strong validation of Nebius’s vertically integrated AI hardware capabilities, securing multi-year revenue visibility and reinforcing its position as a credible, institutionally backed leader in AI infrastructure.
