Oklo (NYSE:OKLO) stock jumped 8% in early trading today, leading a broad surge across the nuclear sector, before pulling back to $64. The catalyst is a sweeping federal directive: on April 14, the White House issued National Science and Technology Memorandum 3, outlining a federally backed push to deploy nuclear reactors beyond Earth. Investors are treating the mandate as a turning point for the entire advanced nuclear industry.
The policy framework is ambitious. Orbital nuclear systems are targeted for deployment by 2028, with lunar surface reactors targeted by 2030. The initiative greenlights NASA’s Space Reactor-1 “Freedom” mission and Lunar Reactor-1 for sustained Moon operations, with mid-power reactors capable of producing at least 20 kilowatts of electric power, and scalable designs extending to 100 kilowatts or more encouraged for future missions. That’s the kind of government-backed technology mandate that tends to electrify entire sectors, much like the dynamic we saw recently when federal AI milestones drove sharp moves across tech names.
The broader market backdrop is supportive. The VIX sits at 18.17, well off its recent peak of 30.61 in late March, signaling a shift from risk-off to risk-on conditions. That kind of volatility compression tends to open the door for thematic, high-conviction sector rotations like the one playing out in nuclear names today.
Oklo Stock Leads the Charge
Oklo’s fast-fission technology makes it a natural focal point for the space nuclear narrative. CEO and co-founder Jacob DeWitte was appointed by President Donald Trump to the President’s Council of Advisors on Science and Technology in March, a connection that reinforces Oklo’s proximity to federal decision-making. DeWitte has stated, “The world is catching up to what we’ve known all along: nuclear power is essential to a clean, dependable, and scalable energy future.”
OKLO stock has risen 32% over the past week and is up 192% over the past year. The consensus analyst price target stands at $90.41, with 13 Buy or Strong Buy ratings against just one Strong Sell. It’s a pre-revenue company still burning cash, but the mandate gives the long-term thesis a powerful new dimension.
Nano Nuclear Energy: Portable Reactors for Extreme Environments
Nano Nuclear Energy (NASDAQ:NNE) stock is also moving today, building on a 8% gain over the past week. Nano Nuclear Energy’s portable reactor concepts are designed for extreme environments, making it a natural fit for the space deployment framework. In April, Nano Nuclear Energy received a U.S. Department of Energy GAIN voucher to support development of its KRONOS MMR microreactor, focusing on reactor design analysis for uncertainty and sensitivity modeling.
With a market cap of $1.22 billion, Nano Nuclear Energy is the smallest of the four names covered here. The early-stage profile means higher risk, but the space nuclear mandate could represent a proportionally larger addressable opportunity relative to its current valuation.
Centrus Energy: The Fuel Behind the Mission
Centrus Energy (NYSE:LEU) stock is up 2% today, trading around $202. Centrus Energy’s role as a domestic nuclear fuel supplier makes it strategically essential to any large-scale nuclear deployment. The space nuclear mandate increases the strategic importance of domestic uranium enrichment capabilities, and Centrus Energy is the only U.S. company currently enriching HALEU at commercial scale.
The fundamentals here are the most mature of the group. Centrus Energy’s FY2025 revenue came in at $448.7 million, with a $3.8 billion total backlog extending to 2040 and a $900 million DOE HALEU production task order. Over the past year, LEU stock has risen 211%. CEO Amir Vexler has said: “We are uniquely positioned to meet the commercial and national security market needs.”
NuScale Power: SMR Technology Enters the Space Age
NuScale Power (NYSE:SMR) stock has gained over the past year, with shares trading around $11.50 today. NuScale Power holds a critical distinction: it’s the first and only SMR developer with NRC design approval, covering its 77 MWe module. That regulatory head start matters enormously as the policy framework demands rapid deployment timelines.
NuScale Power’s ENTRA1/TVA agreement covers up to 6 gigawatts of SMR deployment, described as the largest SMR program in U.S. history. CEO John Hopkins noted: “NuScale is honored that our technology was selected for ENTRA1’s historic agreement with the Tennessee Valley Authority.” The space nuclear mandate has repositioned small modular reactor developers from terrestrial energy contenders to strategic space infrastructure players.
What to Watch
Watch for whether any of these four names receive direct contract mentions or agency partnerships tied to the space nuclear framework in the coming weeks. With orbital deployment targeted as early as 2028, procurement timelines could accelerate faster than the market currently expects.
The sector’s momentum is real, but so is execution risk across pre-commercial names like Oklo and Nano Nuclear Energy. Centrus Energy’s revenue base and backlog give it a more grounded footing, while NuScale Power’s regulatory approval sets it apart on deployment readiness. Keep an eye on follow-on White House guidance or NASA procurement announcements as the next likely catalysts for this group.
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