# Startup funding in the United States, June 2026: Prometheus's $12B Series B leads 106 rounds > We read 106 equity rounds raised in the United States and announced in June 2026, raising $26B between them: 43% of the rounds we read worldwide that month... Source: https://millionrounds.com/news/monthly/2026-06/united-states (Millionrounds; every figure on the page links to its filing or article) Equity rounds **106** raised in the United States, 102 with an amount Raised **$26B** across those rounds Lead named **86%** of rounds say who led Share of the world **43%** of rounds; 74% of the money ## The biggest rounds - [1 **Prometheus** Series B **$12B**](https://millionrounds.com/company/prometheus) - [2 **Baseten** Growth · led by Spark Capital, Wellington Management **$1.5B**](https://millionrounds.com/company/baseten) - [3 A **AppsFlyer** Series E **$1.0B**](https://millionrounds.com/company/appsflyer) - [4 **Maxwell Power** Growth · led by Fairtide Partners **$750M**](https://millionrounds.com/company/maxwell-power) - 5 C **Cyera** Growth · led by Temasek Holdings, Evolution Equity Partners **$600M** - [6 **Supabase** Series F · led by GIC **$500M**](https://millionrounds.com/company/supabase) - [7 **Impulse Space** Series D · led by 137 Ventures, BANNER VC **$500M**](https://millionrounds.com/company/impulse-space) - [8 F **Flourish** Growth · led by Google Ventures, Lux Capital **$500M**](https://millionrounds.com/company/flourish) - [9 H **Helion** Growth · led by Thrive Capital **$465M**](https://millionrounds.com/company/helion) - [10 **NewLimit** Series C · led by Founders Fund **$435M**](https://millionrounds.com/company/newlimit) ## Day by day Equity rounds raised in the United States and announced each day of June. The busiest day was 3 June, with 9. 1 June 30 June ## By stage, against the year Each stage's median this month beside its twelve-month median: the United States's own where we hold enough rounds for a benchmark, otherwise the worldwide one. [Pre-seed](https://millionrounds.com/benchmarks/pre-seed/united-states) *3* **$2.9M** this month **$3.0M** 12 months here [Seed](https://millionrounds.com/benchmarks/seed/united-states) *19* **$10M** this month **$8.5M** 12 months here [Series A](https://millionrounds.com/benchmarks/series-a/united-states) *29* **$29M** this month **$25M** 12 months here [Series B](https://millionrounds.com/benchmarks/series-b/united-states) *19* **$68M** this month **$60M** 12 months here [Series C](https://millionrounds.com/benchmarks/series-c/united-states) *15* **$100M** this month **$100M** 12 months here [Series D](https://millionrounds.com/benchmarks/series-d/united-states) *2* **$450M** this month **$170M** 12 months here [Growth](https://millionrounds.com/benchmarks/growth/united-states) *14* **$278M** this month **$200M** 12 months here ## The most active leads Firms that led two or more of the month's rounds in the United States. - [**General Catalyst** Modal Labs, Standard Bots, Town *3 led*](https://millionrounds.com/fund/general-catalyst) - [**Spark Capital** Baseten, Cadence, Novellia *3 led*](https://millionrounds.com/fund/spark-capital) - [**Andreessen Horowitz** Lassie, Orbital *2 led*](https://millionrounds.com/fund/andreessen-horowitz) - [**Accel** PointFive, Twenty *2 led*](https://millionrounds.com/fund/accel) - [**Founders Fund** Endurance Energy, NewLimit *2 led*](https://millionrounds.com/fund/founders-fund) - [**Redpoint** Collate, Modal Labs *2 led*](https://millionrounds.com/fund/redpoint) - [**Viking Global** City Therapeutics, GT Medical Technologies *2 led*](https://millionrounds.com/fund/viking-global-investors) - [**Greenfield** Coralogix, Patronus AI *2 led*](https://millionrounds.com/fund/greenfield) ## In what - [AI](https://millionrounds.com/news/monthly/2026-06/sector/ai) **60** - [Healthcare](https://millionrounds.com/news/monthly/2026-06/sector/healthcare) **19** - [Fintech](https://millionrounds.com/news/monthly/2026-06/sector/fintech) **18** - [Big Data & Analytics](https://millionrounds.com/news/monthly/2026-06/sector/big-data) **15** - [Biotech](https://millionrounds.com/news/monthly/2026-06/sector/biotech) **12** - [Enterprise Software](https://millionrounds.com/news/monthly/2026-06/sector/enterprise-software) **11** - [Construction](https://millionrounds.com/news/monthly/2026-06/sector/construction) **11** - [Robotics](https://millionrounds.com/news/monthly/2026-06/sector/robotics) **9** AI was the busiest sector in the United States. ## Against the world - Rounds, the United States **106** - Rounds, worldwide **245** - Raised, the United States **$26B** - Raised, worldwide **$35B** [The whole of June 2026](https://millionrounds.com/news/monthly/2026-06) ## Other countries in June [31 rounds **United Kingdom** *→*](https://millionrounds.com/news/monthly/2026-06/united-kingdom)[9 rounds **Australia** *→*](https://millionrounds.com/news/monthly/2026-06/australia)[8 rounds **India** *→*](https://millionrounds.com/news/monthly/2026-06/india)[8 rounds **Germany** *→*](https://millionrounds.com/news/monthly/2026-06/germany)[7 rounds **Netherlands** *→*](https://millionrounds.com/news/monthly/2026-06/netherlands)[6 rounds **France** *→*](https://millionrounds.com/news/monthly/2026-06/france)[6 rounds **Spain** *→*](https://millionrounds.com/news/monthly/2026-06/spain) **How this roundup is made** It is written from the rounds we read that month in named articles and filings, counted by the country the company raised in. Only equity rounds with a stage count; debt, grants and public companies' raises do not. Each month the eight countries with the most equity rounds get their own roundup. We read more sources every month, so compare medians, not totals. [How we read rounds](https://millionrounds.com/methodology) · [Report a mistake](https://millionrounds.com/corrections)