Nebius's Prepaid Growth Engine Faces Its First Real Test

Nebius's Q2 shows 454% revenue surge, but its $20-25M/MW pricing with 50-60% prepayments transfers capital risk to clients, fueling a $40B backlog.

The most striking number in Nebius's second-quarter report wasn't the revenue figure, impressive as it was. It was the pricing structure buried in the contract details — and the message it sends about who bears the risk in this corner of the AI infrastructure boom.

Nebius closed four new AI cloud contracts in the quarter, each averaging over $1 billion in value, pushing the total AI cloud order book to roughly four times its previous level. The company now prices these deals at $20–25 million per megawatt, with customers prepaying 50–60 percent of associated capital expenditures. That's a financing model that shifts capital risk onto clients rather than leaving it on Nebius's own balance sheet — a structural advantage that separates this growth story from many other AI infrastructure bets where companies must fund capacity expansion on spec.

The Backlog Is Massive — But So Is the Spending

The headline numbers tell the story of a company scaling at breakneck speed. Revenue for the second quarter reached $582.3 million, up 454 percent year over year, with adjusted EBITDA of $236.2 million. The annualized revenue run-rate hit $3 billion, up from $1.9 billion in the prior quarter, and management is targeting $7–9 billion in annualized revenue by year-end.

Yet the capital requirements are staggering. Nebius plowed $5.7 billion into capital expenditures during the quarter — nearly ten times its quarterly revenue. The net loss came in at $190.4 million, with depreciation and amortization of $259.7 million. The company's total backlog now exceeds $40 billion, including a deal with Meta worth up to $27 billion over five years, but converting that backlog into actual revenue and customer prepayments will determine whether the current valuation holds up. Management expects customer prepayments to exceed $9 billion for 2026.

Capacity Targets Raised as Power Becomes the Battleground

Nebius raised its contracted power capacity target for 2026 to 5 gigawatts, up from a previous guidance of more than 4 gigawatts. That upward revision matters because secured electricity is the scarcest resource in the AI data center race — and the company is signaling that demand continues to outpace its ability to build.

On the Q2 earnings call, Nebius also disclosed an agreement with Bloom Energy to supply fuel cells for a planned 300-megawatt data center in Vineland, New Jersey. The move suggests Nebius is tapping alternative energy sources to sidestep the grid constraints that industry analysts say are throttling much of the data center sector.

The company's pricing power is evident across its contract book. Short-term GPU deals are reportedly being priced at $40–50 million per megawatt, well above medium-term terms — a sign of tight supply that benefits Nebius as a seller.

The Bull Case and the Bear Case Collide

The stock closed Friday at €239.70, up 8.4 percent on the day and 47 percent over the past seven days. Reuters reported that Nebius beat analyst revenue expectations on booming demand for AI infrastructure, sending shares up more than 20 percent on the initial reaction. The stock still sits about 8.2 percent below its 52-week high of €261.00.

Institutional investors including Jennison Associates, State Street, and Orbis Allan Gray all increased their positions during the second quarter. The adjusted EBITDA margin in the core business stands at 49.7 percent — evidence, bulls argue, that operations are scaling profitably even as depreciation and investment weigh on GAAP results. The shares trade roughly 23 percent above their 50-day moving average, suggesting sustained investor conviction.

The bear case is equally well-defined. Investor Michael Burry has built a short position against Nebius and has repeatedly criticized the valuation, which sits at more than 20 times expected revenue. The $5.7 billion quarterly capex bill — vastly exceeding revenue — implies structural reliance on debt or further capital raises should growth stumble. The broader market backdrop has also grown jittery: the collapse of hedge fund Situational Awareness, which lost around $15 billion in July and was forced to sell its public equity portfolio to Citadel, serves as a reminder of how leveraged AI bets have become. Nvidia's planned $500 billion financing structure for the neocloud industry, which Morgan Stanley sees as a potential additional revenue stream, also remains unclear in its details — a sector-wide risk should that financing architecture prove less durable than hoped.

What Happens Next

Nebius also quietly appointed Lindsey Irvine as chief marketing officer just over a week ago — a personnel move that slipped under the radar amid the earnings noise but signals organizational preparation for a larger growth phase.

The next concrete test is straightforward: how quickly the $40 billion backlog translates into reported revenue and customer prepayments in upcoming quarterly filings. If that conversion holds and the core EBITDA margin stays stable, the bull case retains its foundation. If customers delay contracts or power capacity proves tighter than planned, the relationship between capex and revenue realization could shift — and a valuation that has already run hard could come under pressure quickly.

Volatility is inherent at this stage of growth, and the stock's recent surge hasn't yet pushed it into record territory. The question isn't whether Nebius is growing — it clearly is. The question is whether the prepayment-heavy model that de-risks its expansion can keep pace with the scale of investment required to deliver on 5 gigawatts of contracted power by year-end. That's the metric that will determine whether this re-rating has substance or whether the market has simply gotten ahead of reality.