The $40 Billion Question Hanging Over Nebius's Meteoric Rise

Nebius Group's Q2 revenue jumps 454%, contracts top $40B, but Michael Burry shorts the stock, citing boom peak and debt risks.

There's a peculiar tension at the heart of Nebius Group's current market narrative. On one side sits a contract pipeline that would make most infrastructure companies envious — customer commitments exceeding $40 billion, prepayments expected to top $9 billion this year alone. On the other side stands a prominent short seller who sees something else entirely: the unmistakable silhouette of a boom reaching its apex.

That friction played out in the stock price on Friday, when shares jumped 8.4 percent to close at EUR 239.70, pushing the company's market capitalization to roughly EUR 59.88 billion. The move came on the heels of a new billion-dollar agreement with AI startup Reflection AI and a freshly inked partnership with Vantage Data Centers in Wales. For investors who held on since January, the rally now amounts to a 226 percent gain; over twelve months, the stock has more than quadrupled.

The Bull Case, In Numbers

The company's second-quarter results, delivered on Wednesday, provided the fundamental fuel. Revenue came in at $582.3 million — a 454 percent jump year-over-year — while adjusted EBITDA margin swung to 41 percent from a loss in the prior-year quarter. The stock has added 6.6 percent since that print.

Management has been equally aggressive on the forward-looking metrics. The target for contractually secured power capacity has been raised to 5 gigawatts by year-end, up from an earlier goal of more than 4 gigawatts, with plans to bring over 1 gigawatt of additional capacity online annually from 2027. That expansion carries a planned investment of $20 billion to $25 billion. The full-year revenue forecast remains steady at $3.0 billion to $3.4 billion.

The contract book tells a similar story of acceleration. Four core AI-cloud agreements, each averaging over $1 billion, have pushed total customer commitments past the $40 billion mark — a near-quadrupling in the value of the company's AI-cloud contract portfolio. The Reflection AI deal runs through 2029 and is built around Nvidia's GB300 chips.

The Bear Case, In One Sentence

Investor Michael Burry has reportedly established a short position against the stock, describing the 210 percent run-up since the start of the year as looking "like the peak of a boom." His concern centers on the debt being used to finance the infrastructure buildout.

That skepticism isn't without concrete footholds. DA Davidson recently flagged construction delays at the Vineland, New Jersey facility that have constrained near-term capacity expansion, cutting its price target to $175 with a neutral rating. It's a notable counterpoint to the broader analyst enthusiasm.

Analysts Split, Not United

The sell-side response to Wednesday's results has been anything but uniform. Northland Securities' Nehal Chokshi raised his price target from $248 to $410 on Friday — the highest on the Street — while reaffirming an "Outperform" rating. Citigroup followed with an increase from $278 to $324 and a "Buy" recommendation.

The gap between the Street's top target and DA Davidson's cautious stance illustrates a genuine disagreement among professionals about how to value growth of this magnitude. Automated ratings from agencies like Weiss Ratings, which recently downgraded the stock from "hold (c)" to "hold (c-)," add little to the fundamental debate.

The Structural Shift Beneath the Surface

Beyond the headline numbers, the company's business model is visibly migrating toward long-term, deeply committed customers. Prepayments of that scale provide planning certainty for the capital-intensive buildout of data centers and energy infrastructure — a crucial consideration given the industry's heavy investment burden.

Institutional involvement is also deepening. A filing with the U.S. securities regulator shows Goldman Sachs submitted an updated Schedule 13G in early August, holding just over 23.1 million Class A shares — approximately 10.5 percent of that share class. The filing explicitly states the position is held in the ordinary course of business with no intent to influence corporate control.

The company has also strengthened its marketing leadership, appointing Lindsey Irvine as Chief Marketing Officer on August 5, a move that aligns with the accelerated growth trajectory and the need for more polished engagement with large customers and investors.

Reading the Technicals

The stock currently trades 23 percent above its 50-day moving average and 89 percent above its 200-day average — a stretch that underscores how far the valuation has drifted from its own mean. Annualized volatility of 178 percent translates the market's nervousness into mathematical form. The 52-week high stands at EUR 261.00, just 8.2 percent above current levels.

The core question isn't whether Nebius is growing — that much is beyond dispute. It's whether this growth is financed in a way that can withstand a downturn. With Q3 results due on October 22, the coming months will test whether the company's breakneck contract momentum can keep pace with its infrastructure ambitions. For now, the stock remains a case study in how quickly an AI-infrastructure promise can become either a triumph or a cautionary tale — depending on whose math ultimately holds up.