BWX licenses small modular reactor design after Ananym push

BWX Technologies has agreed to license its small modular reactor design, a move that came after activist investor Ananym Capital spent months publicly campaigning for the company to commercialize the technology. The decision revives a nuclear project that was shelved nearly a decade ago, and it lands at a moment when demand for clean, reliable power to feed AI data centers has turned nuclear energy into a Wall Street priority.

Ananym Capital, which manages around $350 million and holds approximately 9% of BWXT’s portfolio, had been vocal about the opportunity. The firm’s thesis is straightforward: BWXT is sitting on a 180 megawatt pressurized water reactor design called mPower that it developed in the early 2010s, and the world finally wants what the company built too early.

A reactor design gets a second life

The mPower project has a complicated history. BWXT originally developed the small modular reactor design over a decade ago, positioning it as a next-generation nuclear solution. But between 2014 and 2017, the company quietly shelved the project. The reasons were prosaic: not enough customer demand and prohibitively high licensing costs.

Ananym Capital recognized this shift. On May 12, 2026, during the Sohn Investment Conference, the firm publicly urged BWXT to commercialize mPower. Co-founders Alex Silver and Charlie Penner, who launched Ananym in 2024, laid out a case that the reactor design could be a transformative asset rather than an intellectual property curiosity gathering dust on a shelf.

Their pitch included specific financial projections. Ananym estimated BWXT could see roughly 45% upside simply by leaning into its existing role as a nuclear components supplier. But the bigger number was the one that got attention: commercializing mPower could potentially double the company’s valuation by 2028.

Why BWXT, and why now

BWXT already builds nuclear reactors. It holds unique licenses and serves as a key supplier to the US Navy’s nuclear propulsion program. BWXT also has existing partnerships in the SMR supply chain, including work with GE Hitachi.

The mPower design itself is a 180 MW pressurized water reactor. The clean energy demand from data centers has changed the market timing equation. Tech giants including Microsoft, Google, and Amazon have all made moves toward nuclear energy procurement, creating exactly the kind of customer base that didn’t exist when BWXT shelved mPower in the mid-2010s.

What this means for investors

For BWXT shareholders, the near-term question is whether licensing the design translates into meaningful revenue or remains a symbolic gesture. Licensing is not the same as building and deploying reactors. The path from licensed design to operating reactor involves regulatory approvals, manufacturing scale-up, site selection, and customer commitments.

Ananym’s projected 45% upside as a components supplier is arguably the more conservative and achievable target. BWXT is already embedded in the nuclear supply chain, and growing demand for SMR components from multiple reactor developers could benefit the company regardless of whether mPower itself reaches commercial deployment.

The broader competitive landscape matters here too. BWXT is not the only company chasing the SMR market. NuScale Power has its own design, and several international competitors are advancing their own modular concepts. The advantage BWXT holds is institutional credibility and an existing manufacturing base.

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