Y Combinator

Accelerator
Mountain View, CA

Strategy

Stages
Pre-SeedSeed
Sectors
EnterpriseConsumerAIFintechHealthcareSaaS
Geographies
USAMountain View, CA
Check size
$500K

Portfolio

4 total

Sector / Stage Activity

By sector (portfolio)
AI infra
1 · 25%
Insurtech
1 · 25%
Developer tools
1 · 25%
Space
1 · 25%

Co-Investors

12

Latest Pulse

Pulse coverage →
  1. AfterQuery Becomes YC's Fastest-Ever Unicorn at $3.2BAfterQuery, which pays doctors and lawyers to train AI models, reportedly hit a $3.2 billion valuation just five months after its $30 million Series A -- the fastest run from launch to unicorn in Y Combinator's history.
  2. Sequoia, Khosla, Y Combinator Lead 2026's Unicorn ClassSequoia Capital, Khosla Ventures and Y Combinator top the list of investors backing 2026's new unicorns, with 250 companies reaching billion-dollar valuations through August 15 -- up from 193 in all of 2025, per Crunchbase data.
  3. Robinhood's YC-Linked Retail Fund Nears NYSE DebutRobinhood Ventures Fund II, a closed-end fund giving retail investors exposure to 80 early-stage startups linked to Y Combinator, closes its share-request window August 12 ahead of a planned NYSE debut at $25 a share on August 13.
  4. Robinhood Lists a Fund That Buys Y Combinator StakesRobinhood Ventures Fund II is set to list publicly on August 13 at $25 a share, aiming to raise $200M so retail investors can indirectly back roughly 80 Y Combinator-linked private companies -- while paying Robinhood 2% and 20% carry.
  5. Robinhood Lets Retail Investors Back Y Combinator StartupsRobinhood is listing a publicly tradable fund that invests in current and former Y Combinator startups, opening up to $200M of early-stage venture exposure to any retail investor for the first time.
  6. Robinhood Opens Y Combinator Startups to RetailRobinhood's second closed-end venture fund, set to list publicly on August 13 at $25/share, will let any retail investor buy exposure to Y Combinator startups for the first time.
  7. YC's Open-Sourced Agent Tool Rethinks Who the User IsY Combinator open-sourcing QM, the multiplayer AI agent harness it built to run its own accounting, legal, events and engineering work, is a bet that the real unlock in agent tooling is coordinating a whole company, not another personal chatbot.
  8. Y Combinator Open-Sources Its Internal AI Agent ToolY Combinator open-sourced QM, the multiplayer AI agent harness it built to run its own accounting, legal, events and engineering work, giving any startup a free blueprint for company-wide agent deployment.
  9. Inside the 25-Company Letter Backing Openweight AI ModelsNvidia, Microsoft, Meta, a16z, IBM, Dell, Palantir, Mistral, Hugging Face and Y Combinator jointly argued open-weight AI models keep America competitive against China, while OpenAI and Anthropic declined to sign.
  10. General Catalyst Overtakes Y Combinator in Fintech Deal CountGeneral Catalyst has pulled ahead of Y Combinator as the most active lead investor in fintech rounds of $5 million or more, ending YC's long run atop the category.

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