Investor Lists

Open Source lead investors

Updated 7 November 2026

Firms we have watched lead a round raised by an open Source company in the last two years. Leading is rarer than taking part, and it is the role a founder most needs filled.

See all 37 →The top 25
37investors on the listNo change this week
1,465cheques in 12 months+12% against the market
$27Mmedian round they joined+238% against the market median
97%wrote a cheque in 12 months
100%have led a round

The Top 25

Ordered by cheques observed, never by anything anyone paid for

Deploying now (25)

  1. 1Sequoia CapitalDeploying nowVC firm · United States2,099$35Mmedian roundNov 2026last seen
  2. 2Andreessen HorowitzDeploying nowVC firm · United States1,661$27Mmedian roundNov 2026last seen
  3. 3SV AngelDeploying nowVC firm · United States1,349$18Mmedian roundOct 2026last seen
  4. 4AccelDeploying nowVC firm · United States1,341$32Mmedian roundNov 2026last seen
  5. 5Intel CapitalDeploying nowCorporate VC · United States1,123$22Mmedian roundOct 2026last seen
  6. 6Tiger Global ManagementDeploying nowVC firm · United States773$47Mmedian roundNov 2026last seen
  7. 7Insight PartnersDeploying nowVC firm · United States765$40Mmedian roundOct 2026last seen
  8. 8HSGDeploying nowVC firm · Hong Kong SAR China498$31Mmedian roundOct 2026last seen
  9. 9Peak XVDeploying nowVC firm · United States317$15Mmedian roundNov 2026last seen
  10. 10IVPDeploying nowVC firm · United States287$100Mmedian roundOct 2026last seen
  11. 11Thrive CapitalDeploying nowFamily office240$50Mmedian roundOct 2026last seen
  12. 12Cota CapitalDeploying nowVC firm · United States200$15Mmedian roundJul 2026last seen
  13. 13NFXDeploying nowVC firm · United States191$10Mmedian roundSept 2026last seen
  14. 14SignalFireDeploying nowVC firm · United States188$16Mmedian roundOct 2026last seen
  15. 15Point Nine CapitalDeploying nowVC firm · Germany184$8.6Mmedian roundNov 2026last seen
  16. 16Silverton PartnersDeploying nowVC firm · United States155$7Mmedian roundOct 2026last seen
  17. 17Robot VenturesDeploying nowVC firm · United States135$6Mmedian roundOct 2026last seen
  18. 18Blockchain CapitalDeploying nowVC firm · United States130$15Mmedian roundNov 2026last seen
  19. 19Emergence CapitalDeploying nowVC firm · Senegal101$30Mmedian roundOct 2026last seen
  20. 20Iris CapitalDeploying nowVC firm · France96$25Mmedian roundOct 2026last seen
  21. 21AVPDeploying nowInvestment firm · United States94$23Mmedian roundOct 2026last seen
  22. 22Basis Set VenturesDeploying nowVC firm · United States93$13Mmedian roundOct 2026last seen
  23. 23Vista Equity PartnersDeploying nowPrivate equity · United States64$40Mmedian roundOct 2026last seen
  24. 24Aramco VenturesDeploying nowCorporate VC · Saudi Arabia60$27Mmedian roundSept 2026last seen
  25. 25AdditionDeploying nowPrivate equity · United States58$38Mmedian roundSept 2026last seen
12 more on this list

All 37 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 lead investors

Who are the most active open Source lead investors?

By cheques observed, the most active are Sequoia Capital, Andreessen Horowitz, SV Angel, Accel and Intel Capital.

How many open Source lead investors are there?

37 are on record. 97% made an investment in the last 12 months and 100% have led a round.

Which stages do open Source lead investors back?

Of the rounds with a named stage in the last 12 months, mostly Series A (23%) and Seed (22%).

How big are the rounds open Source lead investors join?

The typical (median) round among the leading investors here is $25M.

Which sectors do open Source lead investors back most?

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

Which open Source lead investors lead the most rounds?

Andreessen Horowitz (114 led), Accel (103 led) and Sequoia Capital (91 led).

Where are open Source lead investors based?

Among the most active, most are based in the United States (19), Hong Kong SAR China (1) and Germany (1).

What have open Source lead investors invested in recently?

Recent rounds include Thinking Machines Lab (Other, Nov 2026, with Accel), Harbinger (Series D+, Nov 2026, with Tiger Global Management) and Uranium Digital (Series A, Nov 2026, with Blockchain Capital).

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