Mini Nuclear Power Stocks Plunge, $260 Million in Market Cap Vanishes in a Day

As of market close, NuScale Power Corporation (SMR) shares stood at $10.58—about KRW 15,000—down 5.79% from the previous session. Its market capitalization fell to approximately $3.43 billion (around KRW 4.8 trillion), erasing some $187 million (roughly KRW 260 billion) in a single day. Trading volume reached about 17.3 million shares.

In its May 7 release of first-quarter 2026 results, the company highlighted progress on up to 6 GW of U.S. small modular reactor projects through partnerships with TVA and ENTRA1 Energy, as well as advances on Romania’s Doiceşti RoPower project, while maintaining roughly $1 billion in liquidity.

Earlier in late April, NuScale Power opened a new operations center in Houston, Texas, strengthening its project management and customer support functions.

Founded in 2007, NuScale Power is a U.S. small modular reactor (SMR) technology firm and remains the only company to have received design certification from the U.S. Nuclear Regulatory Commission. Its model combines multiple 77-megawatt small reactors to deliver carbon-neutral power to grids, data centers, hydrogen production facilities and district heating systems.