Nuclear Startup Valar Atomics Seeks $1 Billion in New Funding Round

Valar Atomics, a three-year-old startup building compact nuclear reactors, is in talks to raise $1 billion at a roughly $6 billion valuation, with Sequoia expected to lead. The company last raised $450 million at a $2 billion valuation in March 2026. In July, Valar showed its reactor powering an Nvidia AI chip under a new data center partnership.