The $40 Billion Backlog and a $775 Million Test: Why Nebius Is the Most Polarizing Stock in AI Infrastructure

Nvidia's 9.3% stake in Nebius sparks a 31.8% surge, but the stock remains 18.3% down over the past month amid debates over debt-fueled expansion vs. self-sustaining growth.

Nvidia’s disclosure that it holds a 9.3% stake in Nebius — a position worth roughly $5 billion — should have been an unambiguous vote of confidence. Instead, it has laid bare the deep divide between two competing narratives about the Amsterdam-based cloud infrastructure provider. The stock surged 31.80% in seven trading sessions following the news, yet remains 18.30% lower over the past month. At €197.80, it sits just 0.76% below its 50-day moving average of €199.31 — a technical no-man’s land that reflects an unresolved battle between bulls and bears.

The SEC filing confirmed what many had suspected since March, when Nvidia and Nebius announced a partnership to build cloud infrastructure for AI workloads. The chip giant now holds roughly 22.3 million shares and pre-funded warrants. But the filing also crystallized a question that has haunted Nebius since its shares peaked at €261.00 on June 22, 2026: Is this a self-sustaining growth story validated by the most important player in AI, or a capital-intensive expansion propped up by debt and a handful of marquee customers?

The Bull Case: A Full-Stack Neocloud With Backlog to Spare

The strategic logic behind Nvidia’s investment rests on a foundation that extends well beyond the partnership. Nebius has been quietly assembling what analysts at Baird — who initiated coverage with an “Outperform” rating — call a “full-stack” neocloud platform. The company’s most recent commercial milestone came on July 14, when it signed a computing capacity deal worth over $1 billion with Reflection AI, an open-model research lab, with the contract running through 2029.

That deal joins existing commitments from Microsoft and Meta that together push Nebius’s contracted revenue backlog past $40 billion. The scale is staggering for a company with a market capitalization of €40.63 billion — and it helps explain why Northland raised its price target from $248 to $410, while Bank of America reaffirmed its “Buy” rating, citing accelerated growth in AI compute capacity.

The infrastructure buildout to support those contracts is equally ambitious. In early April, Nebius announced plans for a 310-megawatt AI factory in Lappeenranta, Finland. That followed news of a one-gigawatt campus in Missouri. Together, the two projects underscore the company’s target of reaching more than three gigawatts of contracted capacity by the end of 2026.

The Financing Blueprint That Changes Everything

Perhaps the most consequential development for long-term investors came on July 17, when Nebius announced its first secured senior credit facility of roughly $775 million. The structure is notable less for its size than for what it represents: a template for funding massive capital expenditures without diluting existing shareholders.

The facility works by pledging already-installed GPU infrastructure and contracted cash flows from investment-grade customers as collateral. In effect, Nebius has turned Nvidia’s chips into bankable assets — a model that allows the company to recycle capital from operational hardware into new growth. This complements the “asset-light” strategy Nebius unveiled on July 15, under which infrastructure partners will own and finance data centers while Nebius provides the software stack, system architecture, and global sales. The goal is a leaner balance sheet paired with faster capacity expansion.

Bank of America specifically cited this new credit facility as evidence that Nebius is pursuing a more capital-efficient path. The question is whether the model can scale fast enough to meet the $40 billion backlog without requiring additional equity raises.

The Bear Case: Debt, Concentration, and Contagion Risk

The other side of the ledger is sobering. Nebius is funding its growth increasingly through debt rather than operating cash flow. Independent analyses point to substantial leverage and cash outflows, with current capacity covering only a fraction of what would be needed to fulfill existing contracts. One single customer — Microsoft — accounts for a significant portion of the business, creating concentration risk that no amount of infrastructure engineering can fully mitigate.

The market’s sensitivity to external shocks was on full display when Meta announced plans to sell excess AI compute capacity. The entire neocloud sector sold off, with Nebius shares falling between 12% and 15% in a single session — a purely sentiment-driven move triggered by a competitor’s strategic decision.

Insider activity adds another layer of ambiguity. Board chairman John Boynton sold roughly 6,958 Class A shares worth about $1.4 million on July 15, 2026, through a pre-arranged 10b5-1 trading plan. The sale represented just 2% of his holdings — he retains roughly 421,000 directly held Class A shares — and followed a similar disposition of about $1.47 million in June. While the 10b5-1 structure makes this a routine diversification rather than a spontaneous signal of concern, the pattern is worth noting for investors who track insider behavior.

The Technical Picture: A Pause, Not a Resolution

With annualized volatility of 117.10% and an RSI of 52.9 — or 50.7 depending on the calculation — Nebius sits in a technical sweet spot that offers no clear directional signal. The stock is not overbought, leaving room for further upside, but it is also 24.21% below its 52-week high after a 30-day decline of 18.30%.

The weekly recovery of 27.40% that followed the Nvidia filing shows just how quickly sentiment can shift. Yet the distance to the 200-day moving average of €120.86 remains substantial, and the gap to the 50-day average is a razor-thin 0.76%. The short-term trend is contested, not decided.

What Comes Next

Investors have so far interpreted Nvidia’s stake, the Reflection AI contract, and the secured credit facility as validation rather than signs of financial strain. As long as that perception holds, the path of least resistance points toward a retest of the €261.00 high rather than a breakdown below the 200-day average.

The next catalyst is the second-quarter earnings report, expected in the coming weeks though not yet confirmed by the company. Until then, Nebius will trade in the tension between strategic backing and financing risk — a tension that, given the stock’s volatility, could resolve sharply in either direction.

The core question remains whether a company with €40.63 billion in market capitalization can execute a three-gigawatt buildout without hitting the limits of its new financing model. By the end of 2026, when that capacity target is supposed to be met, investors will have their answer. Until then, the only certainty is that the swings will continue.