In this article, we will list the 5 Fastest-Growing AI Infrastructure Stocks to Buy. Please visit 10 Fastest-Growing AI Infrastructure Stocks to Buy if you’d like to see an extended list.

For this article, we screened AI infrastructure companies across chips, servers, storage, networking, data-center equipment, cloud infrastructure, power, and cooling. We then selected the stocks with the highest reported year-over-year revenue growth. Companies with unusually heavy balance-sheet stress, large losses, or other material concerns were omitted from the list.

5. Super Micro Computer, Inc. (NASDAQ:SMCI)

Super Micro Computer, Inc. (NASDAQ:SMCI) is one of the fastest-growing AI infrastructure stocks to buy. On June 11, 2026, Supermicro priced equity and equity-linked financing transactions that, together with a planned at-the-market program, represented a total potential equity raise of $7.0 billion. Super Micro Computer said the capital would help fund component purchases tied to roughly $39 billion of advanced AI server orders received in recent weeks from more than 20 customers, including orders for its Data Center Building Block Solutions.

That order base underscores Supermicro’s position in rack-scale AI infrastructure, where server demand is expanding quickly but also requires heavy working-capital support. The same dynamic was visible in fiscal Q3 2026, when net sales rose to $10.2 billion from $4.6 billion a year earlier, while cash used in operations reached $6.6 billion and total bank debt plus convertible notes stood at $8.8 billion.

Super Micro Computer, Inc. (NASDAQ:SMCI) provides application-optimized servers, AI systems, storage, networking, liquid-cooling infrastructure, software, and support services for enterprise, cloud, data-center, 5G, edge, and embedded markets.

4. Credo Technology Group Holding Ltd (NASDAQ:CRDO)

Credo Technology Group Holding Ltd (NASDAQ:CRDO) is one of the fastest-growing AI infrastructure stocks to buy. On May 28, 2026, Credo completed its acquisition of DustPhotonics, adding silicon photonics photonic integrated circuit technology to its optical connectivity portfolio. The deal deepens Credo’s exposure to the optical layer of AI infrastructure, where hyperscale clusters need faster, lower-power connections across scale-out and scale-up networks.

Credo said the acquisition expands its portfolio across 800G, 1.6T, and 3.2T near-packaged optics and co-packaged optics, while giving the company a more vertically integrated stack spanning SerDes, digital signal processing, silicon photonics, and system integration. The company also said the combined portfolio of ZeroFlap optical transceivers, optical DSPs, and silicon photonics products is expected to become a significant growth driver in fiscal 2027. That strengthens the context around Credo’s fiscal Q4 2026 results, reported on June 1, when revenue rose 157% year-over-year to $437.0 million.

Credo Technology Group Holding Ltd (NASDAQ:CRDO) provides high-speed, energy-efficient connectivity solutions for AI, cloud computing, hyperscale networks, optical and electrical Ethernet, and PCIe applications.

3. Micron Technology, Inc. (NASDAQ:MU)

Micron Technology, Inc. (NASDAQ:MU) is one of the fastest-growing AI infrastructure stocks to buy. On May 22, 2026, Micron said it had started manufacturing 1-alpha DRAM at its Manassas, Virginia, fab, calling it the most advanced memory technology ever produced in the United States. The expansion is highly relevant for AI infrastructure because memory supply has become a strategic bottleneck across data centers, networking, industrial systems, vehicles, and edge devices as AI workloads spread beyond centralized training clusters.

Micron said the Manassas investment would quadruple its DDR4 wafer supply at the site, while its broader U.S. investment plan spans approximately $200 billion across Virginia, Idaho, and New York. The company’s latest reported quarter shows why that capacity push is tied to demand rather than optics: fiscal Q2 2026 revenue rose to $23.86 billion from $8.05 billion a year earlier, with operating cash flow nearly tripling to $11.90 billion.

Micron Technology, Inc. (NASDAQ:MU) provides memory and storage products, including DRAM, NAND, NOR, high-bandwidth memory, SSDs, and related solutions for data centers, AI, cloud, consumer, mobile, automotive, and industrial markets.

2. SanDisk Corporation (NASDAQ:SNDK)

SanDisk Corporation (NASDAQ:SNDK) is one of the fastest-growing AI infrastructure stocks to buy. On May 12, 2026, reports highlighted SanDisk’s open-source SPRandom technology, a method designed to cut SSD preconditioning for ultra-high-capacity drives from days to hours. SSD preconditioning is not a consumer feature; it is an operational bottleneck for data centers, where drives need stable, predictable I/O behavior before being placed into production.

SanDisk Corporation says SPRandom can accelerate development and qualification, while conventional approaches can take more than 144 hours for a 128TB SSD and just over 6 hours with SPRandom. That fits the company’s AI storage thesis because inference, retrieval, and GPU-centric workloads depend on consistent access to large datasets, not just raw compute resources. The demand backdrop was visible in SanDisk’s fiscal Q3 2026 results, when revenue rose 251% year-over-year to $5.95 billion, and data-center revenue specifically rose 645%.

SanDisk Corporation (NASDAQ:SNDK) develops, manufactures, and provides NAND flash-based data storage devices and solutions, including SSDs, embedded products, removable cards, USB drives, wafers, and components for consumers, enterprises, and public cloud customers.

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.

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