# Index funding: rounds and investors > Index has raised $3.5M across 2 rounds since 2025. Investors include Y Combinator, Bain Capital Ventures and Blackbird Ventures. Every round with its source. Source: https://millionrounds.com/company/index (Millionrounds; every figure on the page links to its filing or article) Australia · [Venture startup](https://millionrounds.com/companies) # Who invested in *Index* 2 rounds we have observed, with the 11 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. B2B Collaboration Tools Software Follow Index and see its new rounds in your feed. [Start following](https://millionrounds.com/login?join=1&why=follow&next=%2Fcompany%2Findex) Funding summary Updated 5 Nov 2026 **$3.5M** raised across 2 rounds since 2025, from 3 sources - **Latest round:** Venture May 2025 - **Biggest round:** $3.5M Seed · Feb 2025 - **Investors:** 11 (2 led) 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. 2026 **$3.5M** Seed **?** Venture - **First round:** Seed, $3.5M - **Biggest round:** $3.5M - **Between rounds:** 3 months ## The rounds - **May 2025** Venture **Amount undisclosed** *4 new* *1 returning* [Y Combinator](https://millionrounds.com/fund/y-combinator) [Salesforce Ventures](https://millionrounds.com/fund/salesforce-ventures) [Soma Capital](https://millionrounds.com/fund/soma-capital) [Abstract Ventures](https://millionrounds.com/fund/abstract) [Gradient](https://millionrounds.com/fund/gradient-ventures) Source recorded - **Feb 2025** Seed **$3.5M** *7 new* [Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures) Lead [Blackbird Ventures](https://millionrounds.com/fund/blackbird-ventures-2) Lead [Y Combinator](https://millionrounds.com/fund/y-combinator) [Bond](https://millionrounds.com/fund/bond) [Max Marchione](https://millionrounds.com/fund/max-marchione) [Alex Zaccaria](https://millionrounds.com/fund/alex-zaccaria) [Thomas Paul Mann](https://millionrounds.com/fund/thomas-paul-mann) Reported by Startup Daily and 1 other ## 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. **Seed** 2025 **Venture** 2025 [Y Combinator](https://millionrounds.com/fund/y-combinator) [Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures) L [Blackbird Ventures](https://millionrounds.com/fund/blackbird-ventures-2) L [Salesforce Ventures](https://millionrounds.com/fund/salesforce-ventures) [Soma Capital](https://millionrounds.com/fund/soma-capital) [Abstract Ventures](https://millionrounds.com/fund/abstract) [Gradient](https://millionrounds.com/fund/gradient-ventures) [Bond](https://millionrounds.com/fund/bond) [Max Marchione](https://millionrounds.com/fund/max-marchione) [Alex Zaccaria](https://millionrounds.com/fund/alex-zaccaria) ## Everyone who backed them [Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **2** rounds [Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures) VC firm **1** round, led 1 [Blackbird Ventures](https://millionrounds.com/fund/blackbird-ventures-2) VC firm **1** round, led 1 [Salesforce Ventures](https://millionrounds.com/fund/salesforce-ventures) Corporate VC **1** round [Soma Capital](https://millionrounds.com/fund/soma-capital) VC firm **1** round [Abstract Ventures](https://millionrounds.com/fund/abstract) VC firm **1** round [Gradient](https://millionrounds.com/fund/gradient-ventures) VC firm **1** round [Bond](https://millionrounds.com/fund/bond) Growth equity **1** round [Max Marchione](https://millionrounds.com/fund/max-marchione) VC firm **1** round [Alex Zaccaria](https://millionrounds.com/fund/alex-zaccaria) Angel **1** round [Thomas Paul Mann](https://millionrounds.com/fund/thomas-paul-mann) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=index). ## Quick answers about Index ### Who invested in Index? Index's investors include Y Combinator, Bain Capital Ventures, Blackbird Ventures, Salesforce Ventures and Soma Capital, and 6 more on record. ### How much has Index raised? Index has raised $3.5M across 2 rounds since 2025. One round did not disclose an amount, so the total is a floor. ### When did Index last raise? Index's most recent round was a Venture in May 2025. ### What was Index's biggest round? Index's largest round on record is $3.5M (Seed), in Feb 2025, led by Bain Capital Ventures. ### Who backed Index first? Index's first round on record, in Feb 2025, was backed by Bain Capital Ventures, Blackbird Ventures and Y Combinator and 4 others. ### What stage is Index at? Index's latest named round is a Venture, in May 2025. ### Where is Index based? Index is based in Australia. ### Who led Index's rounds? Bain Capital Ventures led the Seed in 2025. ## Companies like Index In the same sector, and raised in the last eighteen months. [**Metacognition** $5.0M · Oct 2026](https://millionrounds.com/company/metacognition)[**Bizcap** $175M · Oct 2026](https://millionrounds.com/company/bizcap)[**Amber** $148M · Sept 2026](https://millionrounds.com/company/amber)[**Buildkite** $21M · Sept 2026](https://millionrounds.com/company/buildkite)[**ReFresh** $2.5M · Sept 2026](https://millionrounds.com/company/refresh)[**Gridsight** $38M · Sept 2026](https://millionrounds.com/company/gridsight) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. Open the investor searchOr these rounds in the app