Nebius Group N.V. (NBIS) is set to join the Nasdaq-100 index on Monday, June 22, following a sharp rally in a holiday-shortened trading week. The stock closed at $286.69 on Thursday, June 18, up 2.06% on the day, after a four-session week cut short by the Juneteenth market holiday on Friday. The rally lifted shares 23.4% from the June 12 close, with an intraday high of $298.80 on Thursday.
Index Inclusion Drives Demand
The move into the Nasdaq-100—a benchmark of large non-financial Nasdaq-listed companies—carries significant weight. The index is tracked by over 200 investment products with more than $800 billion in assets under management. Passive funds that replicate the index will be forced to buy Nebius shares to align their portfolios with the new lineup, creating mechanical buying pressure. CoreWeave, another AI infrastructure company, will join the index in the same rebalance, providing a direct comparison for investors.
AI Cloud Growth Story
Nebius has captured Wall Street's attention with a fast-growing but capital-intensive AI cloud business. The company reported first-quarter revenue of $399 million, an increase of 684% year-over-year, and adjusted EBITDA of $129.5 million. However, capital expenditures—spending on data centers, equipment, and intangible assets—reached $2.47 billion in the quarter, underscoring the heavy investment required to scale capacity.
On June 16, Nebius completed the acquisition of Eigen AI, a company specializing in inference and model optimization. Inference refers to running trained AI models to generate answers or decisions, while optimization reduces the cost or time required for those tasks. The deal strengthens Nebius's position in the AI value chain.
Nvidia Partnership and Market Context
Nvidia has played a key role in shaping the Nebius narrative. Reuters reported in March that Nvidia agreed to invest $2 billion for an approximately 8.3% stake in the company. Nebius and CoreWeave are among the so-called "neocloud" providers—specialist cloud firms focused on AI customers—that supply large technology groups. Nvidia CEO Jensen Huang described Nebius as "building an AI cloud designed for the agentic era."
Management has framed the expansion as a long-term bet. In a June 8 statement, founder and CEO Arkady Volozh said demand is "here" and Nebius is "here for the long run." The company also committed about 1.7 billion pounds to UK capacity across four sites.
Risks and Uncertainties
The rally may not be sustainable. Index inclusion raises visibility but does not generate revenue, and a stock that has climbed more than 20% in a shortened week could invite profit-taking. Nebius itself has flagged risks around financing, timely and cost-effective data center construction, equipment and power availability, and competition in a rapidly shifting market. If any of these factors deteriorate, the equity story could shift from scarcity premium to execution risk.
Trading volume surged to 36.6 million shares on Thursday, the heaviest session in recent weeks, suggesting mechanical buying from index funds. The week ahead will test whether the move was purely index-driven or reflects genuine repricing of the business. Traders will watch the first hours of Nasdaq-100 membership for liquidity and fund-flow clues, while longer-term holders will look for signs that capacity additions, acquisitions like Eigen AI, and robust cloud demand can translate into durable cash generation.
