5 Fastest-Growing AI Infrastructure Stocks to Buy

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1. Nebius Group N.V. (NASDAQ:NBIS)

Nebius Group N.V. (NASDAQ:NBIS) is one of the fastest-growing AI infrastructure stocks to buy. On June 8, 2026, Nebius said it would invest approximately £1.7 billion to build AI capacity in the UK through three new NVIDIA infrastructure deployments, while expanding its commercial and AI R&D hub in London. Nebius Group said the UK deployments would reach 65 MW when fully ramped in 2027, adding domestic compute capacity for enterprises, researchers, and public-sector users.

The expansion fits the company’s broader AI cloud strategy, where revenue growth depends on bringing contracted power and GPU capacity online quickly enough to meet demand for training, inference, and agentic AI workloads. In Q1 2026, that capacity-led ramp was already visible, as group revenue rose 684% year-over-year to $399.0 million, while Nebius AI cloud revenue increased 841% to $389.7 million and accounted for about 98% of total group revenue.

Nebius Group N.V. (NASDAQ:NBIS) is an AI cloud company that provides full-stack infrastructure, compute, storage, networking, inference, data, and agentic AI services for developers, startups, enterprises, and AI builders.

While we acknowledge the potential of NBIS to grow, our conviction lies in the belief that some other AI stocks hold greater promise for delivering higher returns and have limited downside risk. If you are looking for an AI stock that is more promising than NBIS and that has 100x upside potential, check out our report about the cheapest AI stock.

READ NEXT: 30 Stocks That Should Double in 3 Years and 11 Hidden AI Stocks to Buy Right Now.

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