ASP Isotopes Inc. (ASPI) saw its stock price surge by 15.64% in a 24-hour period, marking a significant rally for the Delaware-based company. The dramatic uptick comes on the heels of a major announcement regarding a $22 million loan agreement with TerraPower, a prominent U.S. nuclear innovation firm, to support the construction of a new uranium enrichment facility.

The loan agreement, signed on May 16, 2025, outlines TerraPower's commitment to provide conditional financial support to ASP Isotopes' subsidiary, QLE TP Funding SPE LLC. This substantial backing is earmarked for the development of a facility that will produce High Assay Low-Enriched Uranium (HALEU), a crucial component for advanced nuclear reactors. The loan, guaranteed by ASP Isotopes Inc. and Quantum Leap Energy LLC, carries a maturity date of May 16, 2032, providing a long-term financial framework for the project.

Investors have responded enthusiastically to the news, driving up the stock price in both regular and after-hours trading. The agreement not only provides significant financial support but also includes a long-term supply arrangement that allows ASP Isotopes to sell excess HALEU to other buyers if TerraPower doesn't meet certain purchase criteria. This flexibility, combined with the partnership with a leading player in the nuclear industry, has bolstered confidence in ASP Isotopes' future prospects in the growing market for advanced nuclear fuel. The substantial stock price increase reflects market optimism about the company's potential growth and strengthened position in the nuclear energy sector.