# Double funding: rounds and investors > Double has raised $19M across 4 rounds since 2021. Investors include Y Combinator, Index Ventures and FJ Labs. Every round with its source. Source: https://millionrounds.com/company/double (Millionrounds; every figure on the page links to its filing or article) United States · [Series A startup](https://millionrounds.com/companies) # Who invested in *Double* 4 rounds we have observed, with the 8 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it. Financial Services Raised 11 months ago Funding summary Updated 26 Oct 2026 **$19M** raised across 4 rounds since 2021, from 4 sources **$8.5M** Series A **$500K** Pre-seed **$3.3M** Seed **$6.5M** Series A - **Latest round:** Series A, $6.5M Dec 2025 - **Biggest round:** $8.5M Series A · Oct 2021 - **Step-up i:** 2× - **Investors:** 8 See who backed them ## The funding story Each circle is a round, placed by date and sized by amount. The line above is the running total. 2022 2023 2024 2025 **$8.5M** Series A **$500K** Pre-seed **$3.3M** Seed **$6.5M** Series A - **First round:** Series A, $8.5M - **Biggest round:** $8.5M - **Usual gap between rounds:** 18 months ## The rounds - **Dec 2025** Series A **$6.5M** *2 new* *1 returning* [Y Combinator](https://millionrounds.com/fund/y-combinator) [Album VC](https://millionrounds.com/fund/album) [Twenty Two Ventures](https://millionrounds.com/fund/twenty-two-ventures) Source recorded - **May 2024** Seed **$3.3M** *1 returning* [Y Combinator](https://millionrounds.com/fund/y-combinator) Source recorded - **Apr 2023** Pre-seed **$500K** *1 new* [Y Combinator](https://millionrounds.com/fund/y-combinator) Source recorded - **Oct 2021** Series A **$8.5M** *5 new* [Index Ventures](https://millionrounds.com/fund/index-ventures) [FJ Labs](https://millionrounds.com/fund/fj-labs) [Eurazeo](https://millionrounds.com/fund/eurazeo) [Daphni](https://millionrounds.com/fund/daphni) [Gutter Capital](https://millionrounds.com/fund/gutter-capital) Source recorded ## Who was in which round The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led. **Series A** 2021 **Pre-seed** 2023 **Seed** 2024 **Series A** 2025 [Y Combinator](https://millionrounds.com/fund/y-combinator) [Index Ventures](https://millionrounds.com/fund/index-ventures) [FJ Labs](https://millionrounds.com/fund/fj-labs) [Eurazeo](https://millionrounds.com/fund/eurazeo) [Daphni](https://millionrounds.com/fund/daphni) [Album VC](https://millionrounds.com/fund/album) [Twenty Two Ventures](https://millionrounds.com/fund/twenty-two-ventures) [Gutter Capital](https://millionrounds.com/fund/gutter-capital) ## Everyone who backed them [Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **3** rounds [Index Ventures](https://millionrounds.com/fund/index-ventures) VC firm **1** round [FJ Labs](https://millionrounds.com/fund/fj-labs) VC firm **1** round [Eurazeo](https://millionrounds.com/fund/eurazeo) Private equity **1** round [Daphni](https://millionrounds.com/fund/daphni) VC firm **1** round [Album VC](https://millionrounds.com/fund/album) VC firm **1** round [Twenty Two Ventures](https://millionrounds.com/fund/twenty-two-ventures) VC firm **1** round [Gutter Capital](https://millionrounds.com/fund/gutter-capital) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=double). ## Quick answers about Double ### Who invested in Double? Double's investors include Y Combinator, Index Ventures, FJ Labs, Eurazeo and Daphni, and 3 more on record. ### How much has Double raised? Double has raised $19M across 4 rounds since 2021. ### When did Double last raise? Double's most recent round was a Series A of $6.5M in Dec 2025. ### What was Double's biggest round? Double's largest round on record is $8.5M (Series A), in Oct 2021. ### Who backed Double first? Double's first round on record, in Oct 2021, was backed by Index Ventures, FJ Labs and Eurazeo and 2 others. ### What stage is Double at? Double's latest named round is a Series A, in Dec 2025. ### Where is Double based? Double is based in the United States. ## Companies like Double In the same sector, and raised in the last eighteen months. 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