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Nuclear Energy Stocks to Watch Before the Next Surge
As AI data centers drive unprecedented electricity demand, nuclear power is back in the spotlight — and investors are taking notice. Here's what's moving in the nuclear energy sector and which stocks are drawing attention.
Nuclear Energy Stocks Worth Watching Right Now
In September 2024, Microsoft signed a 20-year power purchase agreement with Constellation Energy to restart Three Mile Island Unit 1 in Pennsylvania — a reactor offline since 2019. The deal closed a long-running argument about whether nuclear could compete in a world of cheap renewables. It could. It just needed a buyer willing to pay for reliability, and AI data centers turned out to be that buyer.
Since that deal closed, Constellation Energy (CEG) has reportedly gained over 100% while the S&P 500 utility sector sat flat. That divergence tells you something.
Why Nuclear Is Back, and Why Now
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The case for nuclear rests on two facts that weren't true five years ago.
First: AI data centers need firm power. A language model running inference around the clock can't wait for the wind to pick up. Solar and wind are cheap — but intermittent. Nuclear delivers what grid operators call dispatchable power: it runs continuously, regardless of weather, and can be contracted years in advance. That's exactly what a hyperscaler signing a 20-year PPA needs.
Second: uranium supply is structurally short. Global uranium production collapsed between 2016 and 2020 as prices reportedly fell below $25 per pound — below the cost of production for most mines. When prices recovered, mine development couldn't keep pace. Spot uranium reportedly hit approximately $106 per pound in early 2024 before pulling back to around $65–70. That's still more than double the 2020 lows, and long-term contract prices — which most utilities actually pay — remain elevated. New mines take 10 to 15 years to permit and build. The supply gap isn't closing fast.
Those two forces are now hitting simultaneously. That's why capital is moving.
The Stocks Getting the Most Attention
Here's how the investable universe breaks down, with names that institutional investors are actually watching.
Cameco (CCJ)
Canada's Cameco is the largest Western uranium producer, with active mines in Saskatchewan and a JV stake in Kazakhstan's Inkai mine. It's the default first buy for uranium exposure — which also means it's the most liquid and rarely the cheapest. Revenue in 2024 was roughly $2.6 billion. The stock tends to front-run uranium spot prices by months, so waiting for spot to confirm often means you're already late.
Uranium Energy Corp (UEC)
A U.S.-focused in-situ recovery miner with no debt and a growing resource base in Wyoming and Texas. UEC is smaller and more volatile than Cameco, but its U.S. production profile matters if domestic sourcing preferences tighten — which federal policy is pushing toward. Investors comfortable with junior miner risk get more leverage to uranium prices here than with CCJ.
NexGen Energy (NXE) and Denison Mines (DNN)
Both are development-stage Canadian uranium companies. NexGen's Arrow deposit in Saskatchewan is one of the highest-grade undeveloped uranium resources in the world — but NexGen isn't producing yet. These are longer-duration bets requiring patience and tolerance for drawdown. The upside, in a sustained bull market for uranium, is significant. The timeline is not short.
Constellation Energy (CEG)
The largest U.S. nuclear generator, operating an estimated 21 reactors across 14 plants. Constellation restarted Three Mile Island for Microsoft and is actively pursuing life extensions on its existing fleet. It's a utility — it won't triple in six months — but it offers direct exposure to rising power prices and clean energy premiums without commodity price risk. The market prices CEG at a premium to traditional utilities because it expects more PPAs like the Microsoft deal.
Vistra Energy (VST)
Primarily a natural gas generator, but Vistra's acquisition of Energy Harbor in 2024 added four nuclear plants overnight. It now runs one of the larger nuclear fleets in the U.S. Less of a pure play, but the nuclear capacity added real value to a company already benefiting from tight power markets in Texas.
BWX Technologies (BWXT)
The least-discussed name on this list. BWX builds reactors for the U.S. Navy and manufactures fuel for commercial plants. Its defense business is stable; its commercial business is growing as utilities pursue reactor life extensions. It has early contracts in the small modular reactor space. BWXT carries less volatility than most nuclear equities, which makes it a useful anchor for investors who want sector exposure without uranium price swings.
Oklo (OKLO)
The speculative name. Backed by OpenAI CEO Sam Altman, Oklo is developing compact fast fission reactors aimed at data centers and remote industrial sites. It has no revenue, one NRC application in progress, and years of work ahead before commercial deployment. It's also the stock retail investors find most exciting, which means it overshoots in both directions. If you own it, know why — and size accordingly.
What the Risks Actually Look Like
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Nuclear equities are not low-volatility plays. Three risks are worth naming directly.
Construction and regulatory delay: SMR timelines have already slipped. NuScale Power — once seen as the leading U.S. SMR developer — cancelled its first commercial project in 2023 after cost estimates reportedly doubled. The Oklo path is long and uncertain. Factor this in when sizing speculative positions.
Uranium price volatility: Spot uranium has reportedly swung from around $20 to $106 and back to approximately $65 in a decade. Junior miners can drop approximately 50% in a single cycle even when the long-term thesis is intact.
Policy reversal: Nuclear gained bipartisan support largely because of the AI electricity angle. If that narrative weakens — slower AI buildout, cheaper grid storage — the policy tailwinds soften. Less likely than often feared, but not zero.
How to Think About Sizing
A disciplined approach: anchor with established operators (Constellation, BWXT) that pay dividends and have visible earnings, add Cameco for direct uranium exposure, and cap speculative names — junior miners, Oklo-type developers — at 20–25% of the total nuclear allocation.
Spreading across the supply chain gives you exposure to different catalysts. Uranium price moves help miners first. Power price moves help operators. Regulatory progress helps SMR developers. They don't all move together.
The Catalyst Worth Watching
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The first successful grid connection of a small modular reactor in North America or Western Europe will change how investors price the whole sector. Not because early SMRs are large — they won't be — but because it ends the argument that new nuclear construction is too slow and too costly to matter. When that proof point arrives, the re-rating of pre-revenue SMR developers will be fast.
The companies most likely to deliver that milestone in the next three to five years: NuScale (if it recovers permitting momentum), Oklo, and Canadian developer X-energy (private, but watch for a public listing).
The investors who benefit from that re-rating will be the ones already positioned. The window isn't closed — but it's narrowing.
