3 Stocks Supplying Nuclear Reactors With Their Critical Fuel
Tripling global nuclear capacity by 2050 means nothing if the fuel chain cannot keep up, and right now it cannot. Three U.S.-listed companies sit at the most critical bottleneck in the entire build-out, each with a radically different risk profile.
Reactors do not turn on without fuel, and the fuel chain has become the bottleneck. Thirty-three countries signed the COP30 declaration to triple nuclear capacity by 2050, hyperscalers are chasing gigawatts of behind-the-meter atomic power and long-term uranium pricing has pushed into multi-year highs.
The trouble: Yellowcake has to be mined, converted, enriched and in the case of advanced reactors, fabricated into high-assay low-enriched uranium (HALEU) that almost nobody in the West currently produces at scale. These three U.S.-listed names sit on that critical path, but their cash flow profiles could not be more different.
Cameco: Tier-One Uranium With a Reactor Kicker
Cameco (NYSE:CCJ | CCJ Price Prediction) is the only publicly traded Western tier-one uranium producer, running Cigar Lake and McArthur River/Key Lake in Canada plus the JV Inkai operation in Kazakhstan, with UF6 conversion at Port Hope and a 49% stake in Westinghouse, owner of the AP1000 reactor. It is a real operating business with meaningful cash flow.
The scale is what matters. Cameco carries roughly 230 million pounds of uranium under long-term contracts, with average annual deliveries of over 28 million pounds over the next five years, and its FY26 guidance calls for uranium deliveries of 29 to 32 million pounds at an average realized price of $85 to $89 per pound. FY25 revenue rose 11% to $2.50 billion, net income jumped 243% to $423 million, and operating cash flow climbed 56% to $1.01 billion. Layer in the Brookfield and US Government partnership to deploy AP1000 reactors with at least $80 billion in aggregate investment, and Cameco is monetizing both ends of the fuel-to-reactor chain.
The bull case: Disciplined contracting means rising long-term prices flow through as contracts reprice, and Westinghouse gives Cameco exposure to the AP1000 build cycle. Shares are up 0.87% year to date (YTD), more than 25% over the past year and nearly 307% over five years, trading around $99.42 on Sept. 10.
The risk: Potential U.S. tariffs on uranium, an ongoing CRA transfer pricing dispute with $559 million held in cash and letters of credit, extended maintenance at Key Lake in Q3 26, and Kazakhstan’s progressive Mineral Extraction Tax of up to 18% on JV Inkai. None of these is existential, but each can dent a quarter.
Centrus Energy: The Only US-Listed Enricher
Centrus Energy (NYSE:LEU) is the sole publicly traded, proven U.S. uranium enricher, operating the HALEU demonstration cascade in Piketon, Ohio, and centrifuge manufacturing in Oak Ridge, Tennessee. This is a revenue-generating business with operating history.
Q2 FY26 was a beat across the board. Revenue reached $176.1 million, up 14% year over year and 18.4% ahead of the $148.8 million consensus, with adjusted diluted EPS of $1.77. Backlog has become the real story: total commercial backlog grew to $4.5 billion extending through 2040, split $3.7 billion in the LEU segment and $0.8 billion in technical solutions, and management confirmed all financial contingencies in the contingent LEU enrichment backlog have been removed. On top of that sits a $900 million HALEU enrichment award from the DOE. Management stated: “Centrus is the only viable, production-ready technology that can meet national security needs.”
The bull case: A Russian LEU import ban tightening domestic supply into a demand ramp. CEO Amir Vexler’s team said long-term LEU pricing continued its “steady ascent year-to-date,” while Piketon commercial production remains targeted for 2029 and the first Oak Ridge centrifuge is expected sometime in 2026. Cash sits at $1.9 billion unrestricted.
The risk: Execution on Piketon and Oak Ridge, and the fact that the DOE does not currently intend to exercise further options under the HALEU Operation Contract and the proposed FY27 DOE budget excludes further HALEU cascade funding. Shares are down nearly 37% YTD but up more than 417% over five years, trading around $173 on Sept. 10.
Oklo: Speculative Fuel-Cycle Optionality
Oklo (NYSE:OKLO) belongs in this discussion for one reason: its fuel-cycle strategy. It is pre-revenue, development-stage and speculative. It does not mine uranium and does not enrich it. Its cash flow profile is fundamentally different from Cameco and Centrus, and it should be sized accordingly.
What Oklo is building on the fuel side: an Aurora Fuel Fabrication Facility (A3F) to convert recovered EBR-II used material into the initial core load for the first Aurora reactor, an Advanced Fuel Center in Tennessee for domestic recycling, with facility engineering progressing and NRC license-application readiness work underway, and a letter of intent with Centrus for HALEU to power up to five Aurora powerhouses with deliveries expected to begin in 2029. DOE also selected Oklo for advanced negotiations regarding surplus plutonium that could be fabricated into reactor fuel, subject to a final DOE agreement, safeguards, and material allocation. CEO Jacob DeWitte’s framing: “For the advanced nuclear industry, fuel cannot be treated as a procurement item that gets solved at the end of a project. It is one of the most important constraints on deployment.”
The (speculative) bull case: First-mover status, a stated Aurora INL startup target of 2028 and $3 billion of cash and marketable securities providing runway.
The risk: No commercial power generation online, no revenue, customer agreements largely non-binding LOIs, NRC licensing uncertainty, and commercial viability unproven. YTD net loss reached $81.6 million and cash used in investing activities was $912.7 million. Shares are down nearly 47% YTD, trading around $41.60 on Sept. 10. Treat it as a small allocation, not a core position.
What to Watch Next
The fuel chain is where the next twelve months of AI-driven nuclear headlines will actually get tested. Cameco reprices contracts into an $85 to $89 realized-price band and monetizes AP1000 backlog through Westinghouse. Centrus turns a $4.5 billion backlog and a $900 million DOE award into steel at Piketon and Oak Ridge. Oklo has to convert LOIs into signed offtake, a plutonium allocation into an actual agreement, and a 2028 startup target into criticality. The reactor announcements grab attention. The fuel milestones decide who actually gets built. (We mapped five ways to play the broader restart, utilities and fuel suppliers included, in a free nuclear report you can grab here.)
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Joel South covers large-cap stocks, dividend investing, and major market trends, with a focus on earnings analysis, valuation, and turning complex data into actionable insights for investors.
He brings more than 15 years of experience as an investor and financial journalist, including 12 years at The Motley Fool, where he served as an investment analyst, Bureau Chief, and later led the Fool.com investing news desk. He has also co-hosted an investing podcast and appeared across TV and radio discussing market trends.
