Nebius Bets $40 Billion on Neocloud Playbook as Microsoft Data Center Delays Test Financing Model

Nebius Group reported third-quarter revenue of $980.8 million on Thursday, up 571% from a year earlier, but the Amsterdam-based AI cloud provider cut its 2026 revenue forecast and outlined a 2027 capital-expenditure plan of $40–45 billion that will test whether the “neocloud” financing model can deliver at scale.

The company’s shares fell 16% in Thursday trading, extending a month-long selloff that has erased more than a third of its value as investors weigh financing risks across the sector.

Prepayments cover capex, but delivery slips

Nebius said customers committed more than $12 billion in contract value since the start of the third quarter. On the agreements signed in Q3, prepayments covered more than 100% of the associated capital expenditure—including data center construction and networking—up from 50–60% in the second quarter. For comparable one-to-three-year contracts, the expected payback period improved to one year and seven months from one year and ten months, measured on a revenue basis across operating and capital costs and excluding any prepayment benefit [1].

That prepayment momentum is central to the 2027 plan. Nebius expects $17–20 billion of customer prepayments next year, and says prepayments plus investment-grade asset-backed financing against existing contracts should fund 75–85% of the $40–45 billion capex target [1][3]. The company ended September with $7.4 billion in cash and about $14.2 billion in debt [3].

But the same quarter revealed the fragility of the delivery side. Delays at several third-party colocation sites pushed expected capacity into the first half of 2027. At the New Jersey campus built for Microsoft—Nebius’s largest customer, with a contract worth up to $19.4 billion—Nebius now expects to have delivered more than half the contracted capacity by year-end, with the remainder scheduled for Q2 2027 [1][6].

Microsoft site hits permitting and power snags

The New Jersey delay stems from DataOne, the third-party site operator. In late Q3, DataOne began retiring temporary natural-gas generation ahead of a planned switch to Bloom Energy fuel cells as the main power source, resetting the schedule for the remaining tranches [1][3]. Microsoft “has been part of the planning process,” Nebius said [3].

Regulatory filings show the transition was not entirely voluntary. In August, the investigative site Floodlight identified at least 45 natural-gas generators operating at the DataOne facility without permits. New Jersey regulators fined the site $1.1 million, finding the generator use violated federal law [6]. DataOne also faces a noise-complaint lawsuit from nearby residents over a constant humming noise [6].

The original Microsoft tranches were meant to deploy in 2025 and 2026. The Q2 2027 delivery date falls well beyond that window, and the contract includes financial penalties for late delivery. Microsoft can terminate affected service after a grace period if dates are missed and no alternative capacity is offered [6]. Nebius did not say whether Microsoft has formally agreed to the revised dates, though Microsoft has not publicly canceled anything [6].

Microsoft tightens oversight across neoclouds

The New Jersey problems arrive as Microsoft reassesses its neocloud exposure. Bloomberg and the Financial Times reported last week that Microsoft passed on an option to expand Nscale’s Texas contract and tightened oversight of third-party projects including Nebius, IREN, and Nscale, sending employees to the New Jersey site [3][6]. Microsoft’s own quarterly filing noted capital expenditure came in lower than expected due to third-party delays [6]. Bloomberg also reported Microsoft stopped being an anchor customer for Nscale’s planned Essex site after power delays [6].

Nebius emphasizes that its agreements with Microsoft and Meta can be financed through asset-backed facilities and that it has more than $40 billion of similar committed revenue [3]. But the Microsoft contract structure shows the neocloud model’s dependency on hyperscaler tolerance for slippage.

Owned sites become the core strategy

Nebius said its owned sites are on time or ahead of schedule and will supply most new capacity from 2027 [1][3]. The company has secured power and components for new owned sites in Missouri, Lappeenranta (Finland), a second Mäntsälä site (Finland), and Alabama—together representing more than 3 GW at full scale over three to three-and-a-half years [3]. Contracted power exceeds 4 GW, with a year-end target of 5 GW [3].

“Going forward, most of the next gigawatt we are bringing online will be on our own sites,” CEO Arkady Volozh said [5].

Guidance reflects the split between demand and delivery

Because some third-party capacity moved into 2027, Nebius now expects 2026 revenue at the low end of its $3.0–3.4 billion range [1]. The annualized revenue run-rate target of $7–9 billion by December has been replaced by a target of ARR above $7 billion in February [3]. The company will stop reporting ARR and will guide on revenue and pre-tax earnings from 2027 [3].

For 2027, Nebius guided to revenue of $12–13 billion and pre-tax breakeven by year-end [1][3]. Adjusted EBITDA in Q3 was $465.8 million [1], a 47% margin [3], while the GAAP net loss from continuing operations narrowed to $37.5 million [1]. About $325 million of Q3 revenue was non-recurring, recognized from the initial phase of an “asset-light” model where partners fund capacity that runs Nebius’s architecture and platform [1][3].

Financing model faces its largest test

The neocloud playbook—using long-term customer contracts and prepayments to securitize debt and fund massive GPU build-outs—has powered Nebius and rival CoreWeave, which reported 168% quarterly revenue growth and a $132.5 billion backlog on Tuesday [3]. Both companies are closely tied to Nvidia, which invested $2 billion in Nebius earlier this year and is a major backer of CoreWeave [2][5].

Market pressure increased after Nvidia confirmed that CEO Jensen Huang resigned Thursday [2][6], and analysts have warned that trouble at Nvidia could amplify volatility in neocloud stocks [5]. Nebius’s 2027 breakeven target depends on converting committed prepayments into operating capacity on the revised schedules while arranging the remaining financing for its $40–45 billion build-out [1].

“Delays are part of our industry right now. We are not immune… none of that capacity is canceled, some of it has shifted to 2027,” Volozh said [5]. The next year will show whether the prepayment-and-asset-backed-financing loop can survive contact with permitting, power, and hyperscaler patience at gigawatt scale.