Nebius Group (NBIS) is back in focus after Q2 2026 results showed a sharp revenue jump powered by its AI cloud business and four very large infrastructure contracts, each valued above US$1b.

Nebius Group’s Q2 earnings surprise, UK data center expansion and reported interest in Decart AI have helped fuel a sharp re-rating, with a 7-day share price return of 47.67% and a 1-year total shareholder return of 287.57% suggesting powerful momentum on top of an already strong 5-year total shareholder return of 307.55%.

If Nebius’s AI surge has your attention, this is also a good moment to scan the wider market for other infrastructure plays and check out 55 AI infrastructure stocks

Nebius Group now sits between two clear stories. One points to AI cloud contracts, UK expansion and a rising revenue run rate. The other highlights accounting worries and capital strain. The key question is which side the current valuation markers support next.

Most Popular Narrative: 11.2% Undervalued

Nebius Group’s most followed narrative pegs fair value at $312.67 versus a last close of $277.58. This leaves a modest valuation gap that hinges on aggressive AI infrastructure buildout and margin expansion.

Heavy capital expenditures for new GPU deployments and data centers are expected in the coming years. If industry trends around digital emissions and environmental regulation become more strict, Nebius could face elevated costs for power, sustainability, and compliance, potentially depressing net margins and overall returns on invested capital.

Read the complete narrative. Read the complete narrative.

Want to see what justifies a premium multiple on Nebius Group at today’s price? The narrative focuses on rapid revenue compounding, rising margins, and a bold earnings path. It examines how those ingredients combine into a single fair value estimate that sits above the current share price.

Result: Fair Value of $312.67 (UNDERVALUED)

However, Nebius Group’s story could shift quickly if data sovereignty rules tighten, or if larger hyperscalers pressure pricing and slow the AI cloud contract pipeline.

Next Steps

Given the mix of excitement and caution around Nebius Group right now, it makes sense to move quickly and weigh the data yourself. To see both sides in one place, start by reviewing the 1 key reward and 4 important warning signs.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.