# Open Source investors in Europe (2026 list) > 36 open Source investors in Europe, 81% active in the last 12 months. Led by Sequoia Capital, Accel, Bpifrance. Ranked by what they funded. Source: https://millionrounds.com/lists/open-source-investors-in-europe (Millionrounds; every figure on the page links to its filing or article) [Investor Lists](https://millionrounds.com/lists) # Open Source investors in Europe Updated 7 November 2026 Firms observed backing an open Source company in Europe in the last two years, wherever the firm is based. [See all 36 *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Fopen-source-investors-in-europe)The top 25 **36** investors on the list No change this week **954** cheques in 12 months *-3%* against the market **$8.5M** median round they joined *+7%* against the market median **81%** wrote a cheque in 12 months **61%** have led a round ## The Top 25 Ordered by cheques observed, never by anything anyone paid for Deploying now (25) - 1 [Sequoia Capital](https://millionrounds.com/fund/sequoia-capital) *Deploying now* VC firm · United States **2,099** **$35M** median round **Nov 2026** last seen - 2 [Accel](https://millionrounds.com/fund/accel) *Deploying now* VC firm · United States **1,341** **$32M** median round **Nov 2026** last seen - 3 [Bpifrance](https://millionrounds.com/fund/bpifrance) *Deploying now* Government · France **1,151** **$4.5M** median round **Oct 2026** last seen - 4 [Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures) *Deploying now* VC firm · United States **524** **$27M** median round **Nov 2026** last seen - 5 [Seedcamp](https://millionrounds.com/fund/seedcamp) *Deploying now* VC firm · United Kingdom **519** **$5M** median round **Nov 2026** last seen - 6 [Spark Capital](https://millionrounds.com/fund/spark-capital) *Deploying now* VC firm · United States **471** **$40M** median round **Oct 2026** last seen - 7 [BlackRock](https://millionrounds.com/fund/blackrock) *Deploying now* Asset manager · United States **296** **$130M** median round **Nov 2026** last seen - 8 [Point Nine Capital](https://millionrounds.com/fund/point-nine-capital) *Deploying now* VC firm · Germany **184** **$8.6M** median round **Nov 2026** last seen - 9 [Costanoa Ventures](https://millionrounds.com/fund/costanoa-ventures) *Deploying now* VC firm · United States **154** **$12M** median round **Sept 2026** last seen - 10 [Firstminute Capital](https://millionrounds.com/fund/firstminute-capital) *Deploying now* VC firm · United Kingdom **123** **$6.4M** median round **Oct 2026** last seen - 11 [Frontline Ventures](https://millionrounds.com/fund/frontline-ventures) *Deploying now* VC firm · United Kingdom **98** **$4.6M** median round **Sept 2026** last seen - 12 [Iris Capital](https://millionrounds.com/fund/iris) *Deploying now* VC firm · France **96** **$25M** median round **Oct 2026** last seen - 13 [AVP](https://millionrounds.com/fund/avp-2) *Deploying now* Investment firm · United States **94** **$23M** median round **Oct 2026** last seen - 14 [HarbourVest Partners](https://millionrounds.com/fund/harbourvest-partners) *Deploying now* Fund of funds · United States **93** **$54M** median round **Jun 2026** last seen - 15 [Unusual Ventures](https://millionrounds.com/fund/unusual-ventures) *Deploying now* VC firm · United States **92** **$10M** median round **Oct 2026** last seen - 16 [Mubadala](https://millionrounds.com/fund/mubadala) *Deploying now* Private equity · United Arab Emirates **91** **$80M** median round **Sept 2026** last seen - 17 [Guillermo Rauch](https://millionrounds.com/fund/guillermo-rauch) *Deploying now* VC firm **76** **$10M** median round **Nov 2026** last seen - 18 [Bosch Ventures](https://millionrounds.com/fund/bosch-ventures) *Deploying now* Corporate VC · Germany **75** **$35M** median round **Oct 2026** last seen - 19 [42CAP](https://millionrounds.com/fund/42cap) *Deploying now* VC firm · Germany **56** **$4.8M** median round **Oct 2026** last seen - 20 [CapitalG](https://millionrounds.com/fund/capitalg) *Deploying now* Corporate VC · Canada **51** **$213M** median round **Oct 2026** last seen - 21 [Colorado Office of Economic Development and International Trade](https://millionrounds.com/fund/colorado-office-of-economic-development-and-international-tr) *Deploying now* Government · United States **47** **$250K** median round **May 2026** last seen - 22 [Alliance VC](https://millionrounds.com/fund/alliance-vc) *Deploying now* VC firm · Norway **43** **$6.9M** median round **Sept 2026** last seen - 23 [Thomas Wolf](https://millionrounds.com/fund/thomas-wolf) *Deploying now* VC firm **41** **$8M** median round **Oct 2026** last seen - 24 [One Peak](https://millionrounds.com/fund/one-peak) *Deploying now* Growth equity · United Kingdom **14** **$34M** median round **Jul 2026** last seen - 25 [Sunflower Capital](https://millionrounds.com/fund/sunflower-capital) *Deploying now* VC firm · United States **6** **$19M** median round **Jul 2026** last seen **11 more on this list** All 36 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 *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Fopen-source-investors-in-europe) ## The Newest Cheques Rounds this list's investors joined most recently - **6** Nov **[Thinking Machines Lab](https://millionrounds.com/company/thinking-machines-lab)** Other · $5B *Led by* [Accel](https://millionrounds.com/fund/accel) - **5** Nov **[Granit](https://millionrounds.com/company/granit)** Seed · $6M *Led by* [Seedcamp](https://millionrounds.com/fund/seedcamp) - **4** Nov **[Titan OS](https://millionrounds.com/company/titan-os)** Other · $46M *With* [BlackRock](https://millionrounds.com/fund/blackrock) - **3** Nov **[e2e](https://millionrounds.com/company/e2e)** Seed · $8M *With* [Guillermo Rauch](https://millionrounds.com/fund/guillermo-rauch) - **3** Nov **[Traversal](https://millionrounds.com/company/traversal)** Series B · $120M *With* [Sequoia Capital](https://millionrounds.com/fund/sequoia-capital) - **3** Nov **[PowerUp Money](https://millionrounds.com/company/powerup-money)** Other · $10M *With* [Accel](https://millionrounds.com/fund/accel) ## Stages This Year 867 rounds - Seed **18%** - Series A **16%** - Venture **13%** - Series B **12%** - Growth **7%** - Other **34%** ## What They Backed Sectors, last 12 months - AI **467** - Fintech **70** - Cybersecurity **53** - Biotech **48** - Healthcare **45** - Big Data & Analytics **43** ## Cheques by Quarter Led Joined 237 Q1 25 244 Q2 25 269 Q3 25 276 Q4 25 300 Q1 26 257 Q2 26 233 Q3 26 72 Q4 26 The last bar is the quarter still running. ## Lists Like This - [AI investors in North America 3,859](https://millionrounds.com/lists/ai-investors-in-north-america) - [AI investors in Europe 2,283](https://millionrounds.com/lists/ai-investors-in-europe) - [Fintech investors in North America 1,309](https://millionrounds.com/lists/fintech-investors-in-north-america) - [Big Data & Analytics investors in North America 1,094](https://millionrounds.com/lists/big-data-investors-in-north-america) - [AI investors in Asia 1,047](https://millionrounds.com/lists/ai-investors-in-asia) - [Biotech investors in North America 1,001](https://millionrounds.com/lists/biotech-investors-in-north-america) - [Energy investors in North America 864](https://millionrounds.com/lists/energy-investors-in-north-america) - [Robotics investors in North America 848](https://millionrounds.com/lists/robotics-investors-in-north-america) - [Construction investors in North America 791](https://millionrounds.com/lists/construction-investors-in-north-america) [All investor lists *→*](https://millionrounds.com/lists) ## Quick answers about open Source investors in Europe ### Who are the most active open Source investors in Europe? By cheques observed, the most active are Sequoia Capital, Accel, Bpifrance, Bain Capital Ventures and Seedcamp. ### How many open Source investors in Europe are there? 36 are on record. 81% made an investment in the last 12 months and 61% have led a round. ### Which stages do open Source investors in Europe back? Of the rounds with a named stage in the last 12 months, mostly Seed (23%) and Series A (21%). ### How big are the rounds open Source investors in Europe join? The typical (median) round among the leading investors here is $19M. ### Which sectors do open Source investors in Europe back most? In the last 12 months, mostly AI, Fintech and Cybersecurity. ### Which open Source investors in Europe lead the most rounds? Accel (103 led), Sequoia Capital (91 led) and Bain Capital Ventures (31 led). ### Where are open Source investors in Europe based? Among the most active, most are based in the United States (11), the United Kingdom (4) and Germany (3). ### What have open Source investors in Europe invested in recently? Recent rounds include Thinking Machines Lab (Other, Nov 2026, with Accel), Granit (Seed, Nov 2026, with Seedcamp) and Titan OS (Other, Nov 2026, with BlackRock). Built from the rounds we watched, refreshed every night. [How we count](https://millionrounds.com/methodology) · [Report a correction](https://millionrounds.com/corrections)