# Y Combinator

Source: https://capitalatlas.ai/funds/y-combinator

> Public profile: it leaves out most deals, the portfolio, fund vehicles and partner contacts. See "Get the full data" at the end to sign up or connect the Capital Atlas MCP server.

Y Combinator is a US-based private equity firm. It focuses on early-stage opportunities in the hardware, software, biotech, and ed-tech sectors, primarily across the US.

## Facts

- Type: Venture Capital Firm
- Headquarters: Mountain View, US
- Founded: 2005
- Website: http://www.ycombinator.com
- Estimated dry powder: $2.9B
- AUM: $5.6B
- Latest fund: YC Continuity Fund, $700M
- Estimated cheque size: $100K–$17.7M
- Stages: Angel, Grant, Seed, Series A, Series B, Series C, Series D, Series E, Series F, Series G, Series H, Series I, Venture Debt, Secondaries, Early Stage
- Sectors: Information Technology, Diversified
- Regions: North America
- Last seen investing: Oct 2026
- Investments in the last 12 months: 369

## Recent investments (newest 5 of 3,516)

- Oct 2026: Sensible (Series A, $27M)
- Oct 2026: Santé, Inc. (Series A, $15M)
- Oct 2026: Halluminate, Inc. (Series A, $30M)
- Sep 2026: Revnu (Seed, $3M)
- Sep 2026: Jeeves Inc. (Series C, $110M)

## Questions

### How much does Y Combinator invest per deal?

Based on the size of its funds, Y Combinator writes estimated cheques of $100K–$17.7M. Lead cheques usually sit at the top of that range and follow-on cheques lower.

### What stages does Y Combinator invest in?

Y Combinator has invested at Angel, Grant, Seed, Series A, Series B and Series C. Its most frequent rounds on record are Seed, Series A and Series B.

### How much capital does Y Combinator have left to invest?

Y Combinator has an estimated $2.9B in dry powder: capital it has raised but not yet invested.

### What has Y Combinator invested in recently?

Recent investments include Sensible, Santé, Inc. and Halluminate, Inc.. It made 369 investments in the last 12 months.

### Where is Y Combinator based?

Y Combinator is headquartered in Mountain View, US.

### How do I contact Y Combinator?

Partner names, emails and LinkedIn profiles for Y Combinator are on the Capital Atlas Pro and Team plans, which also draft outreach and track replies. Check the stages and cheque size above first, so you pitch a firm that fits your round.

## Get the full data

This file is the public profile. It leaves out:

- 3,511 more deals (3,516 in total), with amounts and co-investors
- 2,467 portfolio companies, with sector, stage at entry, year and status
- Its fund vehicles, with vintage, size and status
- Partner names, emails and LinkedIn profiles

### For the founder

1. Sign up free at https://capitalatlas.ai/login (or add an email on https://capitalatlas.ai/funds/y-combinator) to see every deal, portfolio company, fund and office on the profile.
2. Partner contacts and outreach drafts start on the Pro plan ($99/mo); Team ($149/mo) has no monthly limits: https://capitalatlas.ai/pricing

### For you, the agent

- Connect the Capital Atlas MCP server: `https://capitalatlas.ai/api/mcp` (remote MCP over HTTP; the founder signs in with OAuth).
- Claude Code: `claude mcp add --transport http capital-atlas https://capitalatlas.ai/api/mcp`
- Other clients and setup steps: https://capitalatlas.ai/vc-mcp. How to use the tools: https://capitalatlas.ai/for-agents.md
- Call `atlas_mcp_status` first. On `free`, the tools are not available; send the founder the `upgradeUrl`.
- `get_fund_manager_profile` (fundManagerId `cfdf94a6-efb6-477d-86f5-9e06b5541f25`) returns the full profile, and on Pro or Team `find_relevant_contacts` returns partner contacts, for investors matched to the founder's startup.