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Nebius Group stock has delivered a very strong 5 year run, yet the broader valuation checks lean expensive rather than clearly cheap. Recent headlines around rapid AI cloud growth and contract wins sit alongside a low value score and an overvalued read on market multiples.

• Nebius Group has returned about 273.7% over 5 years, which puts more pressure on today's buyers to justify the price with sustained performance over time.

• Expectations around large AI infrastructure contracts and rapid capacity build out can support the current share price, while questions about execution on data center projects and capital intensity may weigh on how much investors are willing to pay.

• The company scores only 2 out of 6 on our valuation checks, which points to a stock that leans expensive rather than a clear bargain on standard metrics.

For investors, the debate is whether Nebius Group's recent share price strength already reflects the AI growth story, or if there is still enough valuation support to compensate for execution and capital deployment risks.

Nebius Group delivered 272.5% returns over the last year. See how this stacks up to the rest of the Software industry.

Is Nebius Group Getting Expensive on Book Value?

P/B is often a useful lens for Nebius Group because investors focus heavily on the value of its physical AI infrastructure and data center assets. On this measure, Nebius trades on a P/B of 6.8x, compared with a Software industry average of about 3.2x and a peer average of 27.1x.

That puts Nebius well above the broader sector on book value, although its P/B still sits well below the AI focused peer group that screens at much richer levels. Despite the strong Q2 2026 AI cloud headlines and large contract wins, the current P/B suggests the stock already carries a premium to the typical software company, with investors paying up for its asset base and growth profile.

On the P/B multiple, Nebius Group stock appears expensive relative to the wider software sector, even though it trades below some AI infrastructure peers.

See what the numbers say about this price — find out in our valuation breakdown.

The Nebius Group Narrative: What Would Justify Today's Price?

Simply Wall St Narratives for Nebius Group pick up where this valuation puzzle leaves off. They spell out which combinations of future growth, margins and earnings would need to play out for Nebius Group's stock to be worth meaningfully more or less than today's price, and each one links its number to a specific view on how growth, profitability and key risks might evolve, giving you something concrete to revisit as fresh information comes through.