Is Nebius Group a Buy?

Nebius Group (NASDAQ: NBIS), an AI data center operator leveraging Nvidia GPUs, experienced a 50% stock surge following the announcement of a multi-year, multi-billion dollar deal with Microsoft. This agreement, valued between $17.4 billion and $19.4 billion from 2026 to 2031, is expected to substantially increase Nebius's revenue run-rate, building on its Q2 2025 revenue growth of 625% to $105 million and raised annual guidance of $900 million to $1.1 billion. The deal underscores significant demand for AI infrastructure and positions Nebius for substantial future growth despite its current adjusted net loss.

Analysis

Nebius Group (NBIS) has secured a transformative multi-year contract with Microsoft valued at $17.4 billion, with a potential upside to $19.4 billion, scheduled to run from 2026 through 2031. This deal triggered a 50% surge in its stock price and fundamentally alters the company's growth trajectory. The agreement builds on an already impressive operational momentum, with Nebius reporting a 625% year-over-year revenue increase to $105 million in Q2 2025 and having raised its year-end guidance to an annual revenue run-rate of $900 million to $1.1 billion. The Microsoft contract alone implies an additional $2.9 billion in annual revenue, potentially elevating the company's total run-rate to nearly $4 billion. This places its current $24.5 billion market capitalization at a forward price-to-sales multiple of approximately 6x, a valuation not considered excessive within the high-growth AI sector. Operationally, Nebius is positioned as a key infrastructure provider with data centers equipped with the latest Nvidia GPUs, and its strategic value is further validated by Nvidia's participation in a $700 million financing round. Despite the hyper-growth in revenue, the company's adjusted net loss widened to $91.5 million from $61.5 million year-over-year, underscoring the capital-intensive nature of scaling its operations. However, the company maintains a strong balance sheet with moderate debt and employs a conservative four-year depreciation schedule for its GPUs.

Key Decisions for Investors

• Investors should re-evaluate valuation models to incorporate the post-2026 revenue run-rate of nearly $4 billion implied by the Microsoft deal, which fundamentally re-rates the company's earnings potential beyond its current guidance.
• Monitor the company's path to profitability and cash flow, as the adjusted net loss widened to $91.5 million in the last reported quarter, indicating significant capital expenditure and operational costs associated with its rapid expansion.
• Given the stock's 465% appreciation since its October IPO and the recent 50% spike, consider the risk of near-term volatility and a potential phased entry rather than establishing a full position at current highs.
• Consider the strategic validation provided by the Nvidia partnership and investment, which reinforces Nebius's competitive position as a specialized provider of high-performance computing for AI applications.