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Central banks in Europe are still talking about further rate moves as they watch energy markets, which keeps attention on hard assets that make AI possible. While software headlines ebb and flow, the physical AI infrastructure theme links directly to power, cooling and connectivity that data centers rely on. This article looks at three AI infrastructure stocks from our screener that illustrate how this theme is playing out.

The three stocks below are just a sample from this AI infrastructure theme, and the full screen surfaced 52 more companies with equally compelling stories that are not covered here. If you want to move straight from ideas to analysis, head into the AI Infrastructure Stocks screener to identify and compare the highest conviction plays.

Western Digital is a long-established storage hardware company that develops and sells hard disk drives, data center platforms and related devices that underpin the vast data pools used for AI training and inference. Its AI link is most direct in high capacity data center HDDs and NVMe SSD platforms for hyperscale and enterprise customers, while consumer drives and accessories are a smaller, less theme critical part of the story. The company generated about US$12.9b from hard disk drives and has a market cap of roughly US$162.5b, which puts it firmly in large cap territory.

For investors looking at the physical layer of AI, Western Digital offers exposure to the storage hardware that keeps data centers running, with contracts tied to long term AI workloads and a history of focusing on high capacity drives for hyperscalers rather than just consumer gadgets. The attraction is a mix of reported earnings, margins and a valuation that some analysis flags as cheaper than many AI peers, but the story is not without caution flags. Profitability is influenced by one off accounting gains, the business is exposed to familiar storage cycles if capacity ramps too aggressively, and insider selling plus a heavier reliance on external borrowing are factors to monitor if AI capex cools.

Western Digital’s storage earnings and large cap scale suggest that the current story might not be fully reflected in the price, particularly with AI workloads reshaping demand. Get the full picture with the 4 key rewards and 3 important warning signs (1 is major!)

Lumentum Holdings is a photonics manufacturer that supplies the high speed optical modules, lasers and wavelength management systems that link AI data center servers and GPU clusters over fiber. Its Integrated Enterprise segment generated US$3.01b in revenue, reflecting a broad hardware portfolio that also includes telecom and industrial laser products that sit outside the pure AI theme. With a market cap of about US$79.4b, Lumentum is a sizeable player in the AI infrastructure chain.

For investors following AI’s physical buildout, Lumentum offers direct exposure to the optical “plumbing” that keeps hyperscale data centers talking to each other at 800G and 1.6T speeds. The company is backed by recent earnings beats and capacity expansion plans. The attraction is a mix of fast growing cloud optics revenue, improving margins and strong analyst interest, set against real questions about customer concentration, cyclicality and a still developing free cash flow story that are explored in more detail in the full analysis.

Cloud optics at Lumentum looks like it could be just getting started, yet the full story still feels underappreciated. Spot the key swing factors inside the 3 key rewards and 3 important warning signs

Dell Technologies is a global hardware and services company that supplies everything from corporate PCs and workstations to the servers, storage and networking gear that power modern data centers. The AI infrastructure link is clearest in its Infrastructure Solutions Group, which sells AI optimized PowerEdge servers with GPUs, high performance all flash and purpose built storage, and data center switches and optics. The Client Solutions Group PC and device business still supplies most of the group’s US$53.1b in CSG revenue versus US$79.5b from ISG and US$1.4b from corporate and other. With a market cap of about US$291.7b, Dell is one of the largest listed hardware suppliers tied to the AI buildout.

Investors watching the buildout of AI data centers may find Dell Technologies hard to ignore because its ISG servers, all flash storage and networking equipment are being designed and sold specifically for GPU heavy AI workloads. Record AI server backlogs and expanding alliances with partners like NVIDIA and Rafay Systems point to strong demand visibility and an ecosystem play rather than just box sales. At the same time, heavy reliance on a cyclical PC segment, margin pressure from commoditized hardware and a meaningful debt load present risks that investors may want to weigh. The key question is how AI focused cash generation and higher value storage and services might affect that balance over time.

Dell Technologies sits at the crossroads of AI servers, storage and debt. Get the full story on how those pieces fit together in the analysis report for Dell Technologies.

Seeking Fresh Alternatives Beyond AI?

Fresh opportunities do not stay quiet for long. Stocks can move from under the radar to full breakout before most investors react. Check these ideas while it matters and get in early.

• Hunt for steadier compounders by zeroing in on a curated list of solid balance sheet and fundamentals (51 results) and avoid companies that struggle to fund growth when conditions tighten.
• Target powerful cash returns from companies screened as 12 dividend fortresses and lock in income potential before yields change as prices respond to renewed momentum.
• Ride the structural shift toward electrification with a hand picked 38 power grid technology and infrastructure stocks and position ahead of infrastructure demand that many investors have not fully caught yet.

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.

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