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WSJ Tech News Briefing · Monday, August 3, 2026

Stellaris Secures $1 Billion for Nuclear Reactor Production

Nuclear energy startup Stellaris announced it has raised $1 billion in a new funding round aimed at producing fleets of nuclear reactors. The round was led by Sequoia Capital, with a partner from Sequoia joining Stellaris's board.

personSean MaguirecompanyStellariscompanySequoia Capitalcompany0.72 VenturescompanyStellaris Equity Partners

The tape

3 quotes
Nuclear energy startup, Stellaris, announced it has closed a $1 billion fundraising round as it aims to start producing fleets of nuclear reactors.
Imani Mowze
The fundraising round was led by Sequoia Capital, and Sequoia partner, Sean Maguire, will join the Stellaris board.
Imani Mowze
Stellaris said it also closed a $200 million credit facility.
Imani Mowze
Heard on WSJ Tech News Briefing — “TNB Tech Minute: Amazon Joins the $3 Trillion Club, published Monday, August 3, 2026. Heardvine summarizes and quotes with attribution and timestamps, and links to the original everywhere.
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Stellaris Secures $1 Billion for Nuclear Reactor Production — Heardvine