Investor Lists

Open Source investors in North America

Updated 7 November 2026

Firms observed backing an open Source company in North America in the last two years, wherever the firm is based.

See all 136 →The top 25
136investors on the listNo change this week
5,588cheques in 12 months-2% against the market
$25Mmedian round they joined+213% against the market median
90%wrote a cheque in 12 months
69%have led a round

The Top 25

Ordered by cheques observed, never by anything anyone paid for

Deploying now (25)

  1. 1Y CombinatorDeploying nowAccelerator · United States6,412$3Mmedian roundOct 2026last seen
  2. 2500 GlobalDeploying nowAngel · United States2,140$3.6Mmedian roundOct 2026last seen
  3. 3Sequoia CapitalDeploying nowVC firm · United States2,099$35Mmedian roundNov 2026last seen
  4. 4Andreessen HorowitzDeploying nowVC firm · United States1,661$27Mmedian roundNov 2026last seen
  5. 5New Enterprise AssociatesDeploying nowVC firm · United States1,610$34Mmedian roundOct 2026last seen
  6. 6Alumni VenturesDeploying nowVC firm · United States1,598$12Mmedian roundNov 2026last seen
  7. 7General CatalystDeploying nowVC firm · United States1,387$27Mmedian roundNov 2026last seen
  8. 8SV AngelDeploying nowVC firm · United States1,349$18Mmedian roundOct 2026last seen
  9. 9AccelDeploying nowVC firm · United States1,341$32Mmedian roundNov 2026last seen
  10. 10Lightspeed Venture PartnersDeploying nowVC firm · United States1,341$35Mmedian roundNov 2026last seen
  11. 11Khosla VenturesDeploying nowVC firm · United States1,128$26Mmedian roundNov 2026last seen
  12. 12Intel CapitalDeploying nowCorporate VC · United States1,123$22Mmedian roundOct 2026last seen
  13. 13Bessemer Venture PartnersDeploying nowVC firm · United States1,038$30Mmedian roundNov 2026last seen
  14. 14Index VenturesDeploying nowVC firm · United Kingdom1,027$31Mmedian roundNov 2026last seen
  15. 15GaingelsDeploying nowPrivate equity · United States1,010$8Mmedian roundOct 2026last seen
  16. 16Google VenturesDeploying nowCorporate VC · United States884$38Mmedian roundOct 2026last seen
  17. 17Tiger Global ManagementDeploying nowVC firm · United States773$47Mmedian roundNov 2026last seen
  18. 18Insight PartnersDeploying nowVC firm · United States765$40Mmedian roundOct 2026last seen
  19. 19Menlo VenturesDeploying nowVC firm · United States740$37Mmedian roundOct 2026last seen
  20. 20Salesforce VenturesDeploying nowCorporate VC · United States649$26Mmedian roundNov 2026last seen
  21. 21CRVDeploying nowVC firm · United States588$20Mmedian roundOct 2026last seen
  22. 22BenchmarkDeploying nowVC firm · United States587$30Mmedian roundOct 2026last seen
  23. 23CitibankDeploying nowGrowth equity · United States566$20Mmedian roundOct 2026last seen
  24. 24FlybridgeDeploying nowVC firm · United States534$5Mmedian roundSept 2026last seen
  25. 25Goodwater CapitalDeploying nowVC firm · United States526$4.1Mmedian roundSept 2026last seen
111 more on this list

All 136 are in the app, with filters for stage, sector and market. A free account shows 10 per search, Pro up to 1,000.

See the whole list →

Quick answers about open Source investors in North America

Who are the most active open Source investors in North America?

By cheques observed, the most active are Y Combinator, 500 Global, Sequoia Capital, Andreessen Horowitz and New Enterprise Associates.

How many open Source investors in North America are there?

136 are on record. 90% made an investment in the last 12 months and 69% have led a round.

Which stages do open Source investors in North America back?

Of the rounds with a named stage in the last 12 months, mostly Series A (25%) and Seed (24%).

How big are the rounds open Source investors in North America join?

The typical (median) round among the leading investors here is $27M.

Which sectors do open Source investors in North America back most?

In the last 12 months, mostly AI, Fintech and Big Data & Analytics.

Which open Source investors in North America lead the most rounds?

Andreessen Horowitz (114 led), Accel (103 led) and General Catalyst (97 led).

Where are open Source investors in North America based?

Most of the leading investors here are based in the United States (24 of the top 25); the rest in the United Kingdom.

What have open Source investors in North America invested in recently?

Recent rounds include LionBio Therapeutics (Pre-seed, Nov 2026, with South Park Commons), Shield AI (Nov 2026, with Disruptive) and Thinking Machines Lab (Other, Nov 2026, with Accel).

Built from the rounds we watched, refreshed every night. How we count · Report a correction