October 2026s Top Nuclear Energy Stocks

AI chip giants like Samsung and TSMC are reporting record results as demand for data centers surges, yet few investors are asking where all that round the clock power will come from. The hunt for reliable, carbon free electricity is turning long term energy contracts into prime real estate. This article walks through three stocks from a focused nuclear power infrastructure screen that targets that theme directly.

The three stocks covered below are just a sample, with the full Nuclear Renaissance screen surfacing 13 more infrastructure companies tied into long dated data center energy contracts and deep decarbonisation plans that are not included in this article.

If you want to identify and analyze the highest conviction plays in this theme, head straight into the Nuclear Renaissance screener.

Standard Nuclear (STDN)

Overview: Standard Nuclear designs and manufactures advanced TRISO nuclear fuel in the United States for small modular and microreactors supplying 24/7 carbon-free power.

Operations: Standard Nuclear currently generates about $7.5 million from TRISO Production, almost entirely from United States customers.

Market Cap: US$2.2b

Standard Nuclear matters for this Nuclear Renaissance theme because its TRISO fuel sits directly in the supply chain for round the clock, low carbon power that heavy AI workloads increasingly rely on. The next move hinges on how fast that fuel capacity can be brought online.

"Planned authorization to operate the SN-TN and SN-ID facilities in 2026, combined with existing SN-Z output, is expected to lift Standard Nuclear’s TRISO throughput capacity to up to 2.5 metric tons per year."

The real swing factor for investors is what happens if a single key assumption about how efficiently that new capacity runs breaks.

If that efficiency question is front of mind, read the full narrative for Standard Nuclear to see how Standard Nuclear’s throughput, contracts and risks all tie into the AI power build out.

Cameco (TSX:CCO)

Overview: Cameco is a Canadian nuclear fuel supplier that mines uranium, processes it into reactor-ready products, and supports nuclear plants globally.

Operations: The business generates about CA$2.9b from Uranium, CA$551 million from Fuel Services, and CA$3.4b from Westinghouse.

Market Cap: CA$55.3b

Where Standard Nuclear focuses on advanced fuel designs, Cameco focuses on scale, supplying the uranium and reactor technology that keep nuclear plants running and AI-driven data centers plugged into steady, carbon-free baseload power.

"Cameco is exposed to a global wave of new nuclear construction, driven by heightened government policy support, net-zero emission mandates, and growing energy security concerns. These factors are expected to influence demand for uranium and nuclear fuel and could affect long-term revenues."

What matters next is how a single pressure on future contracting shapes the balance between pricing power and earnings volatility.

That contracting risk is only the starting point, and the full narrative for Cameco maps how Cameco’s uranium pricing power could decouple from short term swings in spot sentiment.

TKMS & Co KGaA (XTRA:TKMS)

Overview: TKMS & Co KGaA builds submarines, surface warships, and advanced Atlas Electronics sensor and AI systems for allied navies worldwide.

Operations: TKMS generates about €1.3b from Submarines, €543 million from Surface Vessels, and €833 million from Atlas Electronics.

Market Cap: €4.8b

TKMS & Co KGaA matters for the Nuclear Renaissance theme because its Atlas Electronics unit supplies AI-enabled underwater sensors, autonomous platforms, and mission systems that can help monitor, protect, and service nuclear powered fleets and coastal infrastructure tied to 24/7 clean power commitments.

"It can be said that TKMS has a dominant position in Europe, there is an arms boom underway, and the launch of a new arms company on the market is attractive; not many arms companies manufacture submarines."

What really moves the story for TKMS is what happens if a single pressure on long-cycle defense margins and pricing contracts shifts.

Those contract pressures are exactly why the full narrative for TKMS & Co KGaA digs into how TKMS balances long-cycle pricing, backlog quality, and upside if defense demand keeps accelerating.

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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.

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