In this article, we will discuss the 7 Best Fusion Energy Development Stocks to Buy.
The cleanest, most abundant energy source in the universe may finally be moving from science fiction to shareholder letters. Fusion energy stocks are drawing unprecedented capital from billionaire investors, sovereign wealth funds, and deep-tech venture firms, positioning ahead of what could be the most transformative energy breakthrough in human history. Unlike traditional nuclear or renewables, this is not a mature, well-understood trade. It’s a frontier technology where science is finally catching up to ambition, but only for those who can distinguish genuine engineering progress from decades-old promises.
The investment case is being driven by milestones that were considered implausible just a few years ago. Net energy gain demonstrations, advances in superconducting magnet technology, and accelerating private investment have compressed timelines that once stretched indefinitely into the future, creating genuine momentum behind commercial fusion for the first time. Data from Market Research Future (MRFR) estimated the market at $7.23 billion in 2024, growing to $42.52 billion by 2034 at a 19.38% CAGR, a much smaller, narrower scope, with growth driven by breakthroughs in magnetic and inertial confinement approaches and surging private-sector funding commitments. In another analysis by The Business Research Company, the market is growing from $288.05 billion in 2025 to $310.99 billion in 2026 (8.0% CAGR), reaching $419.84 billion by 2030 at a 7.8% CAGR. Analysis highlighted by PR Newswire points to accelerating momentum in public-private partnerships and government-backed fusion initiatives as nations compete to secure first-mover advantage in commercial deployment.
At the same time, physics and engineering research published on platforms like arXiv highlights how advances in high-temperature superconductors and plasma confinement are pushing reactor designs closer to net-positive energy output, reinforcing the long-term credibility of the sector by demonstrating that fusion’s core scientific barriers are being systematically dismantled rather than merely theorized away.
With this context in mind, here are some fusion energy development stocks to buy.
Our Methodology
We used stock screeners to identify the best fusion energy development stocks with a short percentage of shares outstanding of less than 3%. We limited our final selection to companies that have recently reported noteworthy developments likely to impact investor sentiment. These stocks are also popular among analysts and elite hedge funds. To make the list easier to navigate, we ranked the stocks in descending order of their short percentage of shares outstanding.
“Why are we interested in the stocks that hedge funds pile into? The reason is simple: our research has shown that we can outperform the market by imitating the top stock picks of the best hedge funds. Insider Monkey’s quarterly newsletter strategy selects 14 small-cap and large-cap stocks every quarter and has returned 599.2% since May 2014, beating its benchmark by 372 percentage points (see more details here).”
7 Best Fusion Energy Development Stocks to Buy
7. BWX Technologies, Inc. (NYSE:BWXT)
Short Percentage of Shares Outstanding: 2.94%
On June 22, Seaport Research upgraded BWX Technologies, Inc. (NYSE:BWXT) to Buy from Neutral with a $245 price target. The firm cited the company’s strong first-quarter performance, higher 2026 guidance, and the acquisition of Precision Components Group, which establishes BWX’s commercial nuclear component manufacturing capabilities in the United States. According to the analyst, the acquisition provides a strong foundation for the company’s long-term expansion in the commercial nuclear market.
On May 15, Deutsche Bank analyst Scott Deuschle upgraded BWX Technologies, Inc. to Buy from Hold and raised the firm’s price target to $255 from $205. The analyst noted that industry conditions have become increasingly favorable and believes BWX is well-positioned to capitalize on growth opportunities in commercial nuclear energy. Deutsche Bank also stated that its valuation analysis of the company’s government operations, commercial nuclear maintenance, repair, and overhaul business, and greenfield commercial nuclear projects indicates approximately 20% upside potential for the shares.
Founded in 1867 and headquartered in Lynchburg, Virginia, BWX Technologies, Inc. is a premier manufacturer of nuclear components for naval reactors, commercial power, and medicine. It leverages its critical nuclear supply chain, advanced TRISO fuels, and manufacturing expertise to support and commercialize next-generation fusion and advanced reactor technologies.
6. Stellantis N.V. (NYSE:STLA)
Short Percentage of Shares Outstanding: 2.90%
On June 17, Stellantis N.V. (NYSE:STLA), Wayve, and Uber announced a strategic partnership to explore the development and large-scale deployment of Level 4 autonomous robotaxis. The collaboration combines Stellantis’ Level 4-ready vehicle platforms, Wayve’s AI-powered autonomous driving technology, and Uber’s global mobility marketplace to support the next generation of fully autonomous vehicles. The initiative also expands upon existing partnerships between Stellantis and Wayve for advanced driver assistance systems, as well as Wayve and Uber’s plans to launch autonomous ride services across London, Tokyo, and ten additional cities beginning this year.
On June 3, Morgan Stanley raised its price target on Stellantis N.V. to €7.10 from €6.50 while maintaining an Equal Weight rating on the shares. The firm updated its valuation following the company’s first-quarter results, noting that it believes market pessimism and concerns surrounding additional losses have likely reached their low point, supporting a more constructive outlook for the stock.
Stellantis N.V. was founded in 2021 through the merger of Fiat Chrysler Automobiles and PSA Group, though its historic brands date back to 1899. Headquartered in Hoofddorp, Netherlands, it designs and manufactures vehicles globally. It operates as a strategic investor in the nuclear fusion sector, owning a prominent stake in clean-energy startups like TAE Technologies to accelerate breakthrough power solutions.
5. ATI Inc. (NYSE:ATI)
Short Percentage of Shares Outstanding: 2.84%
On June 11, ATI Inc. (NYSE:ATI) announced a new long-term strategic material supply agreement with BWX Technologies, reinforcing the companies’ longstanding partnership in support of the U.S. Naval Nuclear Propulsion Program. The agreement extends through fiscal year 2030 and strengthens ATI’s role as a key supplier of specialized materials for critical national defense applications.
Earlier in May, KeyBanc raised its price target on ATI Inc. to $175 from $167 while maintaining an Overweight rating on the shares. Following the company’s first-quarter results, discussions with management, and its own analysis, the firm increased its 2026 and 2027 estimates based on expectations for continued margin expansion. KeyBanc believes ATI’s exposure to the aerospace and defense sectors, its portfolio of high-margin specialty alloys, ongoing operational improvements, and disciplined use of free cash flow for share repurchases make the company an attractive long-term investment.
Founded in 1996 and headquartered in Dallas, Texas, ATI Inc. produces high-performance titanium, nickel, and refractory alloys essential for aerospace, defense, and medical markets. It engineers, processes, and melts specialized metals such as vanadium and high-purity refractory alloys that are specifically capable of withstanding the extreme heat and radiation required in fusion reactors.
4. Huntington Ingalls Industries, Inc. (NYSE:HII)
Short Percentage of Shares Outstanding: 2.20%
On June 22, Huntington Ingalls Industries, Inc. (NYSE:HII) announced that it has been awarded a $418 million contract to provide repair and maintenance services for shipboard-based elevators installed on U.S. Navy aircraft carriers and amphibious ships. The five-year, indefinite-delivery/indefinite-quantity contract was awarded by the Naval Sea Systems Command and will be executed by HII’s Mission Technologies division. Under the agreement, the company will deliver engineering, maintenance, and technical repair support for elevators, cargo handling equipment, and associated systems, helping enhance the operational readiness of the U.S. Navy fleet.
On May 18, Citi lowered its price target on Huntington Ingalls Industries, Inc. to $405 from $441 while maintaining a Buy rating on the shares. The firm updated its outlook for the aerospace and defense sector, stating that it does not expect an immediate recovery in share prices without greater geopolitical stability in the Middle East. However, Citi believes the recent weakness has created attractive buying opportunities and expects aerospace stocks to recover first, followed by defense companies such as HII.
Huntington Ingalls Industries, Inc. was established as an independent public company in 2011. Headquartered in Newport News, Virginia, it designs and builds nuclear-powered aircraft carriers and submarines. It produces and partners with commercial fusion developers, utilizing techniques like metal powder bed fusion and custom alloy development to produce highly complex, heavy-duty reactors and magnet components.
3. Honeywell International Inc. (NASDAQ:HON)
Short Percentage of Shares Outstanding: 2.18%
On June 30, Daiwa upgraded Honeywell International Inc. (NASDAQ:HON) to Outperform from Neutral and raised its price target to $255 from $240 following the successful completion of the company’s aerospace spin-off on June 29. The firm believes the separation leaves Honeywell with a more focused portfolio and stronger strategic positioning, creating greater leverage for operational execution and capital allocation. Daiwa also cited the remaining company’s solid earnings growth potential, arguing that its streamlined business mix should enable management to better capitalize on attractive opportunities across industrial automation, energy, and advanced technologies.
Earlier, on June 11, Barron’s identified Honeywell International Inc. as an attractively valued investment, arguing that the market continues to value the company as a traditional conglomerate rather than recognizing the worth of its individual businesses. The publication stated that the corporate separation will provide investors with a pure-play aerospace company benefiting from high-margin aftermarket revenue and favorable long-term trends in commercial aviation and defense. Barron’s also suggested that Honeywell’s standalone automation business could command a higher valuation while highlighting the company’s ownership stake in quantum computing company Quantinuum as an additional source of upside that may not yet be fully reflected in the share price.
Founded in 1906 and headquartered in Charlotte, North Carolina, Honeywell International Inc. is a diversified industrial technology company that develops software, aerospace systems, industrial automation solutions, and advanced building technologies. The company also supplies critical control systems, specialized cooling infrastructure, and advanced software used to support the operation and stability of next-generation nuclear fusion reactors.
2. Cummins Inc. (NYSE:CMI)
Short Percentage of Shares Outstanding: 1.49%
On June 17, Wells Fargo raised its price target for Cummins Inc. (NYSE:CMI) to $874 from $794 while maintaining an Overweight rating on the shares. The firm cited the company’s behind-the-meter prime power award with Circe Energy for high-performance computing data centers in West Texas involving its 78L and 60L engine platforms, a development that occurred more than a year ahead of expectations. Wells Fargo also highlighted additional growth opportunities in Alberta, underscoring increasing demand for Cummins’ power solutions supporting rapidly expanding data center infrastructure.
On June 1, Argus raised its price target on Cummins Inc. to $770 from $696 and reiterated a Buy rating. The firm believes Cummins is well-positioned to benefit from the favorable economics of natural gas relative to refined and distillate fuels, as well as increasingly stringent environmental regulations across the United States and international markets. Argus also expects the company to experience sustained long-term demand from truck and machinery manufacturers, supported in part by continued infrastructure development across emerging economies.
Founded in 1919 and headquartered in Columbus, Indiana, Cummins Inc. designs, manufactures, and services diesel, natural gas, electric, and hybrid powertrains, as well as hydrogen production and fuel cell systems. Its Accelera zero-emissions business provides essential large-scale power management, electrolyzers, and microgrid infrastructure required to support and commercialize future subatomic power plants.
1. Cameco Corporation (NYSE:CCJ)
Short Percentage of Shares Outstanding: 1.42%
On June 29, RBC Capital raised its price target on Cameco Corporation (NYSE:CCJ) to C$175 from C$160 while maintaining an Outperform rating on the shares. The firm believes Cameco is exceptionally well-positioned to benefit from strengthening uranium market fundamentals, supported by improving pricing dynamics and growing global demand for nuclear energy. RBC also pointed to robust purchasing activity from sovereign entities and electric utilities, contract pricing that remains stronger than publicly reported figures, and supportive government policies in both the United States and Canada aimed at accelerating nuclear reactor deployment. Together, these factors are expected to provide a favorable backdrop for sustained growth in the uranium market.
Earlier, on June 1, Cameco Corporation and Orano Canada announced an agreement with Tepco Resources to acquire Tepco’s 5% participating interest in the Cigar Lake Joint Venture. Upon completion of the transaction, Cameco’s ownership stake in the high-grade Cigar Lake uranium mine in northern Saskatchewan will increase to approximately 57.4%, further strengthening its position in one of the world’s premier uranium-producing assets. Cameco’s portion of the acquisition is valued at approximately $115.75 million, subject to customary adjustments, with the transaction expected to close during the third quarter of 2026 following regulatory approvals and other standard closing conditions.
Founded in 1988 and headquartered in Saskatoon, Canada, Cameco Corporation is one of the world’s largest uranium producers, exploring for, mining, and processing uranium used to generate carbon-free nuclear electricity. The company also owns a 49% interest in Global Laser Enrichment, which is developing third-generation laser enrichment technology capable of producing High-Assay Low-Enriched Uranium (HALEU) for advanced nuclear reactors.
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