Hadron Energy is now listed on Nasdaq. As of May 26, 2026, the ticker is HDRN, marking the debut of the first light-water nuclear micro-reactor company accessible to public investors. The deal was orchestrated by GigCapital Global, which completed the merger between GigCapital7 Corp. and Hadron through its Private to Public Equity (PPE)™ strategy, consolidating approximately $1.2 billion in assets under management for 2026.
The reactor at the heart of it all is called Halo. It is a 10-megawatt-electric modular micro-reactor, factory-built, transportable, and designed to deliver continuous, carbon-free baseload power. Its refueling cycle spans ten years. These features make it well-suited for remote industrial sites, military bases, data centers, and communities cut off from the traditional power grid. Even before the listing, Hadron’s quality assurance program had already been accepted for formal review by the U.S. Nuclear Regulatory Commission — a milestone that signals the strength of the licensing pathway underway.
GigCapital Global has operated on the SPAC model since 2017, when founder and managing partner Dr. Avi Katz launched the first PPE platform. GigCapital7 was the seventh vehicle in the series. The firm’s methodology, known as Mentor-Investor™, focuses on identifying high-potential technology companies and guiding them to public markets through a structure that preserves operational flexibility and access to diversified capital. GigCapital’s current portfolio spans sectors including applied artificial intelligence, medical devices, and compact nuclear energy.
The Hadron transaction values the company at $1.2 billion overall. At closing, the company received approximately $31 million in cash, with $24.5 million in cash on the balance sheet after transaction expenses. This is not a pure research financing play: Hadron enters the markets with a defined product, a stated commercialization strategy, and a regulatory process already in motion. Going public transforms a private company into a listed entity subject to transparency obligations and capable of raising capital on the open market — a step that remains rare in the nuclear sector.
GigCapital’s PPE model demonstrates that capital markets can serve as a concrete tool to accelerate the development of next-generation nuclear technology. If Hadron manages to sustain the pace of its NRC licensing process and advance toward commercialization of the Halo reactor, its stock market journey will become a reference point for other startups in the sector seeking alternatives to traditional venture capital funding. Compact nuclear power now has a market price, updated every trading day.
