id,date,date_precision,status,transaction_type,round,amount_usd_low,amount_usd_high,lead_or_buyer,co_leads,valuation_usd_low,valuation_usd_high,valuation_basis,valuation_to_run_rate_multiple,multiple_bound,multiple_basis,step_up_vs_prior_closed,price_per_share_usd_low,price_per_share_usd_high,shares,source,source_url,other_source_urls,notes,last_updated
equity-2026-07-30,2026-07-30,day,Closed round,primary_equity,Equity round (Jul 2026),1000000000,1000000000,,"With: Pension funds, sovereign wealth funds, infrastructure and industrial investors incl. Hyundai Motor Group",,,,,,,,,,,"CFS, 30 Jul 2026",https://www.cfs.energy/news-and-media/commonwealth-fusion-systems-raises-another-1-billion-bringing-total-capital-raised-to-4-billion/,https://www.cfs.energy/news-and-media/commonwealth-fusion-systems-announces-equity-investment-by-hyundai-motor-group/,CFS says total raised is now $4B. Hyundai Motor Group’s investment (announced 10 Sep 2026) was part of this round. No valuation disclosed.,2026-11-13
series-b2-2025-08-28,2025-08-28,day,Closed round,primary_equity,Series B2,863000000,863000000,,"With: Nvidia (NVentures), Google, Breakthrough Energy Ventures, Stanley Druckenmiller, Counterpoint Global and others",,,,,,,,,,,"CFS, 28 Aug 2025",https://cfs.energy/news-and-media/commonwealth-fusion-systems-raises-863-million-series-b2-round-to-accelerate-the-commercialization-of-fusion-energy/,https://techcrunch.com/2025/08/28/nvidia-google-and-bill-gates-help-commonwealth-fusion-systems-raise-863m/,CFS says it has raised close to $3 billion to date.,2026-11-13
series-b-2021-12-01,2021-12-01,day,Closed round,primary_equity,Series B,1800000000,1800000000,Tiger Global Management,,,,,,,,,,,,"CFS, 1 Dec 2021",https://www.cfs.energy/news-and-media/commonwealth-fusion-systems-closes-1-8-billion-series-b-round/,https://www.canarymedia.com/articles/nuclear/commonwealth-fusion-pulls-in-colossal-1-8b-for-novel-nuclear-tech,,2026-11-13
series-a2-2020-05-26,2020-05-26,day,Closed round,primary_equity,Series A2,84000000,84000000,Temasek,"With: Equinor, Devonshire Investors and existing investors",,,,,,,,,,,"TechCrunch, 26 May 2020",https://techcrunch.com/2020/05/26/with-84-million-in-new-cash-commonwealth-fusion-is-on-track-for-a-demonstration-fusion-reactor-by-2025/,,,2026-11-13
series-a-2019-06-27,2019-06-27,day,Closed round,primary_equity,Series A (close),115000000,115000000,,,,,,,,,,,,,"CFS, 27 Jun 2019",https://www.cfs.energy/news-and-media/close-series-a-round/,,The closing tranche of the Series A that began in 2018.,2026-11-13