Holtec files for IPO, betting on nuclear demand from data centers

Holtec Nuclear Corporation filed its S-1 with the U.S. Securities and Exchange Commission on July 10, 2026, setting up a proposed listing on Nasdaq and Nasdaq Texas under the symbol HNUC. The filing is a reality check on the nuclear boom: public investors are being asked to back not just a small modular reactor developer, but a company with a long operating history, a revenue base, and hard assets already tied to one of the industry’s most closely watched restart projects.

Holtec was founded in 1986 and says its business spans legacy nuclear services, small modular reactor development, plant restart operations, and engineering and manufacturing. The company is incorporated in Delaware and is headquartered at 1 Holtec Boulevard in Camden, New Jersey. Its filing names Dr. Krishna P. Singh as chief executive officer and classifies Holtec as an emerging growth company and a non-accelerated filer. Renaissance Capital estimated the offering could raise up to about $2.0 billion, and said Holtec booked $989 million in revenue for the 12 months ended March 31, 2026.

What Holtec is selling is not a blank-sheet reactor concept. It already sits in the middle of the Palisades restart in Michigan, where the plant stopped operating in May 2022 after more than 40 years of commercial service. The Nuclear Regulatory Commission says Palisades’ original operating license was issued in 1991, renewed in 2007, and now runs through March 24, 2031. On July 24, 2025, the NRC approved major licensing and regulatory actions needed for restart, including transfer of operating authority from Holtec Decommissioning International LLC to Palisades Energy LLC and reinstatement of key pre-shutdown programs, but the agency still said more work was needed before the plant could return to service.

The money trail is just as important as the reactor paper trail. Holtec has said it received about $400 million from the U.S. Department of Energy to support first-of-a-kind deployment of two SMR-300 units at Palisades, a project it says would pair a restart with a new build. Michigan Gov. Gretchen Whitmer said the federal investment would help protect 900 jobs and provide enough power for 1.4 million households and businesses. Holtec says the first two SMR-300s at the site would be called Pioneer One and Pioneer Two, and that commercial operation could begin by 2030.

That makes Holtec’s IPO more than a vote on one company. It is a test of whether public markets will finance nuclear hardware the way they finance other industrial growth plays, from spent-fuel systems to restart work to new reactor construction. Holtec also holds rights to four other former plant sites, Oyster Creek, Pilgrim, Indian Point, and Big Rock Point, which gives the offering a broader footprint than a single SMR story. With X-energy and Deep Fission also going public this year, the question is whether investors are buying a reactor thesis, a services business, or the larger nuclear demand trade all at once.