Nebius Group N.V. has taken the market by storm, with its stock climbing 135 % this year and a staggering 320 % gain over the past twelve months. The Dutch‑based AI cloud provider now commands a market capitalisation of roughly $55 billion.

The company’s transformation began in 2022, when it shed its Russian holdings amid sanctions and re‑branded from its former identity as the holding company of Yandex. By 2024, Nebius had resumed trading under its new name and started constructing a network of data centres across Europe and the United States.

Unlike many rivals that lease most of their infrastructure, Nebius owns about 75 % of its data‑center footprint. Current sites span the United Kingdom, Finland, Iceland, New Jersey, Spain, Pennsylvania and Alabama, with further locations slated for the pipeline.

Nebius’s meteoric valuation has been propelled by sizeable contracts with hyperscalers. In September 2025, Microsoft inked a multiyear agreement that could bring $17 billion in revenue from Nebius’s GPU‑intensive infrastructure. Earlier, in March, Meta Platforms secured a deal worth up to $27 billion for AI compute capacity, and Nvidia followed suit with a $2 billion equity investment. A week ago, the Situational Awareness fund—managed by former OpenAI employee Leopold Aschenbrenner—acquired a 5.6 % stake.

Morningstar analyst Javier Correonero praised the deals as evidence that Nebius is a serious contender in the AI space and will enable the firm to pursue higher‑margin enterprise contracts. He noted that, although the shares are not a meme stock, they trade at an 82 % premium to the company’s fair‑value estimate of $120.

Financially, Nebius has also outperformed expectations. In the first quarter of 2024, the company reported revenue of $399 million—a 684 % year‑over‑year jump—and forecasts an annual run‑rate between $7 billion and $9 billion.

However, analysts caution that the firm’s aggressive expansion could strain its balance sheet. Nebius plans to spend $20 billion to $25 billion on data‑center expansion in 2026, a level that could expose it to overbuilding if demand stalls. Correonero warned that additional equity raises may be necessary, potentially diluting existing shareholders.

Despite the risks, investors such as Tortoise Capital Advisors remain upbeat. Senior portfolio manager Rob Thummel highlighted Nebius’s vertically integrated stack—from physical facilities to cloud services—as a key differentiator.

Today’s share price sits near $218, close to the FactSet consensus target of $255.29. Morningstar rates the stock a single star, citing a lack of an economic moat and the high beta nature of the shares.

Nebius’s rapid ascent—from a sanctioned holding company to a $55 billion AI cloud provider—mirrors the broader shift toward specialised AI infrastructure in Europe. Whether the company can sustain its growth, manage its capital intensity, and deliver profitable returns remains an open question.

In summary, Nebius has secured high‑profile hyperscaler contracts, posted strong revenue growth, and expanded its data‑center footprint. Its valuation has surged, but the firm faces significant capital‑expenditure demands and a need for additional equity funding. The company’s future performance will hinge on its ability to balance expansion with profitability in a competitive AI infrastructure market.