Tim De Chant / TechCrunch:

Fusion energy startup Helion raised a $465M Series G led by Thrive Capital at a $15.5B valuation, nearly tripling the valuation from its January 2025 round  —  Helion, the fusion startup backed by Sam Altman, announced on Thursday that it had raised $465 million in a new funding round that values the company at $15.5 billion.

Tim De Chant / TechCrunch:

Fusion energy startup Helion raised a $465M Series G led by Thrive Capital at a $15.5B valuation, nearly tripling the valuation from its January 2025 round  —  Helion, the fusion startup backed by Sam Altman, announced on Thursday that it had raised $465 million in a new funding round that values the company at $15.5 billion.

Source: TechMeme
Source Link: https://www.techmeme.com/260607/p12#a260607p12