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Helion Energy

Tier 3 · science · climate-energy · Fusion energy technology development · rank #40 · VC-attention 84.6

Helion Energy develops magneto-inertial fusion technology to generate clean, limitless electricity.

Valuation$15.5B [consensus · conf 0.968]2026
↳ Reuters · news · 2026-06-04 — "Nuclear startup Helion hits $15.5 billion valuation in latest funding round"
↳ SiliconANGLE · news · 2026-06-05 — "Fusion power startup Helion valued at $15.5B in $465M funding round"
↳ MLQ.ai · news · 2026-06-05 — "$15.5B Valuation"
↳ The Information · news · 2026-06-04 — "Fusion Startup Helion Nearly Triples Valuation to $15.5 Billion in Thrive-led Round"
↳ GeekWire · news · 2026-06-04 — "Helion hits $15.5B valuation with $465M in new cash as it aims to commercialize fusion this decade"
↳ Reuters · news · 2025-01-28 — "Helion raises $425 mln from SoftBank's venture arm, hits $5.4 bln valuation"
↳ mlq.ai · news · 2026-06-05 — "Helion Raises $465M Series G at $15.5B Valuation to Build Fusion Plant for Microsoft"
↳ reuters.com · news · 2026-06-04 — "Nuclear startup Helion hits $15.5 billion valuation"
↳ siliconangle.com · news · 2026-06-05 — "Fusion power startup Helion valued at $15.5B"
↳ reuters.com · news · 2025-01-28 — "hits $5.4 bln valuation"
↳ finance.yahoo.com · news · 2025-01-28 — "hits $5.4 billion valuation"
↳ Yahoo Finance · news · 2025-01-28 — "Helion raises $425 million from SoftBank's venture arm, hits $5.4 billion valuation"
↳ theinformation.com · news · 2026-06-04 — "Fusion Startup Helion Nearly Triples Valuation to $15.5 Billion in Thrive-led Round"
↳ geekwire.com · news · 2026-06-04 — "Helion hits $15.5B valuation with $465M in new cash as it aims to commercialize fusion this decade"
Latest round amount$465.7M [consensus · conf 0.97]2026range $465.0M–$500.0M · consensus $465.7M · as of 2026-09-15
↳ SiliconANGLE · news · 2026-06-05 — "Fusion power startup Helion valued at $15.5B in $465M funding round"
↳ MLQ.ai · news · 2026-06-05 — "Helion Raises $465M Series G"
↳ GeekWire · news · 2026-06-04 — "Helion hits $15.5B valuation with $465M in new cash as it aims to commercialize fusion this decade"
↳ Reuters · news · 2025-01-28 — "Helion raises $425 mln from SoftBank's venture arm, hits $5.4 bln valuation"
↳ GeekWire · news · 2026-09-15 — "Helion funding round grows to $500M amid uncertainty over fusion startup's Microsoft timeline"
↳ 425business.com · news · 2026-06-04 — "Helion Raises $465M Series G Funding Round"
↳ The Business Journals · news · 2026-06-04 — "Helion raises $465 million"
↳ My Everett News · news · 2026-06-05 — "Helion Raises $465 Million Series G Funding"
↳ Ventureburn · news · 2026-06-04 — "Helion’s $465M Raise"
↳ Crunchbase News · news · 2025-01-28 — "$425M Series F"
↳ news.crunchbase.com · news · 2025-01-28 — "$425M Series F"
↳ finance.yahoo.com · news · 2026-06-04 — "raises $465M"
↳ Yahoo Finance · news · 2026-06-04 — "raises $465M"
↳ mlq.ai · news · 2026-06-05 — "Helion Raises $465M Series G at $15.5B Valuation to Build Fusion Plant for Microsoft"
↳ siliconangle.com · news · 2026-06-05 — "$465M funding round"
↳ reuters.com · news · 2025-01-28 — "Helion raises $425 mln"
↳ digitaltoday.co.kr · news · 2026-06-05 — "Helion raises $465 million"
↳ finance.yahoo.com · news · 2025-01-28 — "Helion raises $425 million"
↳ bizjournals.com · news · 2026-06-04 — "Helion raises $465 million"
↳ Yahoo Finance · news · 2025-01-28 — "Helion raises $425 million from SoftBank's venture arm, hits $5.4 billion valuation"
↳ geekwire.com · news · 2026-06-04 — "$465M in new cash"
↳ geekwire.com · news · 2026-09-15 — "Helion funding round grows to $500M"
Total raised$465.0M [consensus · conf 0.534]2026
↳ 디지털투데이 · news · 2026-06-05 — "Helion raises $465 million"
↳ ventureburn.com · news · 2026-06-04 — "Helion’s $465M Raise"
Latest round7 [reported · conf 0.268]2026
↳ Crunchbase News · news · 2025-01-28 — "$425M Series F"
↳ mlq.ai · news · 2026-06-05 — "Series G"
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