Studsvik is a Swedish nuclear-technology and services company that provides fuel and materials technology, nuclear simulation software, isotopes, waste management, decommissioning, and radiation-protection solutions across the nuclear lifecycle. Its small-modular-reactor exposure combines reactor-support technologies, including NRC-approved CMS5 reactor-physics software for higher enrichment, higher burnup, and light-water-reactor SMR designs, with the site-development work of its Kärnfull Next subsidiary. On 2026-05-25, Studsvik submitted an application to establish 600–1,400 MW of new nuclear capacity at and around its Nyköping site through the ReFirm multi-site SMR programme. Studsvik has approximately 540 employees across six countries and is listed on Nasdaq Stockholm under the ticker SVIK.
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