Series A · Climate tech

Atlas Atomics reportedly raises about $400m in Series A financing

General Catalyst led the reported round, with Andreessen Horowitz participating, at a valuation of about $1.9 billion.

Atlas Atomics has raised about $400 million in Series A funding led by General Catalyst, with participation from Andreessen Horowitz, Bloomberg reported. The financing values the nuclear energy startup at around $1.9 billion.

The company was co-founded by Kevin Gan and Vivek Ramaswamy and is operating in stealth. Atlas Atomics and the two investment firms declined to comment on the report.

Funding history

Series A · This round~$400M

Sources

  1. Ramaswamy Nuclear Startup Raises Funds at $1.9 Billion Valuenews.bloomberglaw.com · Oct 9, 2026
  2. The Crunchbase Unicorn Board Tops 1,900 Companies In October, With 34 Companies Joining — Half Under 4 Years Oldnews.crunchbase.com · Nov 10, 2026