Nuclear energy is experiencing a modern resurgence as countries seek clean, scalable, and reliable energy to support the transition from fossil fuels. The emergence of Small Modular Reactors (SMRs) and microreactor technologies is transforming nuclear from a legacy utility model into a next-generation energy solution.
While traditional nuclear utilities continue to generate steady cash flows and baseload power, new public listings from advanced reactor companies provide exposure to cutting-edge innovation in clean energy. These new stocks support the commercialization of reactors that are safer, smaller, and better suited for industrial applications, data centers, and remote infrastructure.
Below is a list of notable public companies advancing nuclear energy technologies.
Notable Public Modular Nuclear Companies
| Ticker | Company | Ticker | Exchange | Description |
|---|---|---|---|---|
| SMR | NuScale Power | SMR | NYSE | A leader in SMR development, NuScale designs scalable reactors capable of powering everything from cities to industrial operations. It was the first SMR to receive approval from the US Nuclear Regulatory Commission. |
| OKLO | Oklo | OKLO | NYSE | Backed by Sam Altman, Oklo designs fast fission microreactors that run on HALEU fuel. It aims to deliver compact, modular, carbon-free energy for industrial and commercial use. |
| NNE | NANO Nuclear Energy | NNE | NASDAQ | An emerging developer of microreactor systems targeting decentralized power applications, such as military bases, mining sites, and future off-grid industries. |
| CEG | Constellation Energy | CEG | NASDAQ | In addition to its fossil fuel offerings, this mature utility operates the largest fleet of zero-carbon nuclear power plants in the US. |
| GEV | GE Vernova | GEV | NYSE | GE Vernova is designs, manufactures, and services power generation solutions, including gas turbines, wind turbines, and grid equipment. Its nuclear energy segment focuses on advanced reactor technologies, nuclear fuel and services, and ongoing global deployments, with a pipeline of SMR projects. |
| CCJ | Cameco | CCJ | NYSE | One of the world’s largest uranium producers, supplying nuclear fuel to power plants across the globe. Plays a critical role in the upstream nuclear supply chain. |
Nuclear IPO Pipeline
With growing global attention on energy security, grid reliability, and decarbonization, interest in nuclear IPOs is accelerating. The pipeline includes fusion startups, next-gen SMR developers, and uranium resource companies. Investors are closely watching regulatory shifts and funding support for commercialization.
Stay up to date with our IPO Calendar and the IPO Pro Pipeline to track upcoming listings in the nuclear and advanced energy sectors.
HOW TO INVEST IN NUCLEAR ENERGY STOCKS
Investing in Nuclear Stocks
Investing in nuclear stocks offers exposure to one of the most stable forms of carbon-free energy. With both legacy utilities and high-growth SMR innovators entering public markets, investors can gain a diversified foothold in this evolving sector.
Sign up for a free trial of IPO Pro to track new nuclear energy IPOs.
Nuclear Stock Metrics
Key metrics include power generation capacity, regulatory approval milestones, reactor commercialization timelines, pricing, supply agreements, capex, and long-term energy contracts (backlog). For uranium and fuel cycle companies, reserves, enrichment capabilities, and offtake agreements are critical.
Best Nuclear Energy Stocks to Buy
Screen for nuclear stocks that fit your criteria for market cap, revenue, growth, and profitability. Distinguish between utilities (steady cash flow), reactor developers (growth potential), and suppliers (resource leverage). Seek companies with defensible IP, DOE support, or advanced-stage pilot projects.
How Nuclear Energy Stocks Differ from Traditional Utilities
Unlike traditional utilities, advanced nuclear firms focus on innovation and scale flexibility. SMR and microreactor developers can behave like clean tech startups, with long lead times and xtensive R&D and capex, but significant potential upside. Utilities, on the other hand, provide more predictable returns and regulatory stability.
A balanced nuclear portfolio might include core utility players, uranium miners, and early-stage SMR innovators.
Discover Nuclear Investment Ideas by Exploring the Modular Nuclear Value Chain
As Modular Nuclear technology matures, a new value chain is forming around the design, manufacture, deployment, and fueling of smaller, smarter reactors. Understanding this Nuclear Energy Value Chain helps investors identify key leverage points in the next phase of global energy development.
Four core segments of the Modular Nuclear Value Chain:
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Reactor Design
This segment includes companies designing SMRs, microreactors, and advanced reactor types (e.g., fast neutron or molten salt). NuScale (SMR) and Oklo (OKLO) are leading public developers of reactors that are factory-built and deployable across diverse environments, from urban grids to remote industries. Other advanced reactor developers include X-Energy, TerraPower, and Kairos Power.
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Nuclear Fuel Supply
Fuel availability is key to reactor success. Cameco (CCJ) provides uranium and enrichment services, while new companies are working on HALEU (High-Assay Low-Enriched Uranium) solutions needed for advanced reactors. Lightbridge (LTBR) is commercializing its own brand of proprietary metallic nuclear fuel. Secure, scalable fuel supply chains are vital to deployment.
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Grid Integration & Utilities
Utilities such as Constellation Energy (CEG) and Duke Energy (DUK) are integrating SMRs into decarbonization plans. These players provide transmission, regulation compliance, and long-term power agreements for public and private customers.
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Engineering & Infrastructure Services
This segment includes companies that engineer and produce the specialized hardware, fuel systems, and facilities needed to build and operate nuclear reactors. BWX Technologies (BWXT) is a key player, supplying nuclear components and developing reactors for space and defense applications. Other companies in this segment, such as Amentum (AMTM) and Holtec, contribute critical capabilities like reactor vessel fabrication, spent fuel storage, and small modular reactor assembly. Firms in this segment enable scalable, secure deployment of nuclear technologies.
A Framework for Investing Across the Nuclear Ecosystem
Each phase of the nuclear value chain has distinct growth dynamics. Utility-scale operators offer predictability and dividends, while modular reactor developers provide innovation-driven upside. Fuel cycle providers benefit from long-term supply requirements.
Investors can diversify across this clean energy play by mixing mature power producers with early-stage innovators. As the energy mix shifts toward reliable, carbon-free sources, advanced nuclear power technology offers one of the most promising opportunities in the energy transition.
