Y Combinator (YC)

Activity from announced rounds

All recorded activity

Y Combinator funds early-stage startups through a three-month accelerator in San Francisco, with four batches a year and a standard $500,000 investment for accepted companies.

The investment consists of $125,000 for 7% of the company and $375,000 on an uncapped SAFE with a most-favoured-nation provision. The second SAFE adds to YC’s ownership when it converts, so the full $500,000 is not exchanged for a fixed 7% stake.

During the batch, founders work with YC partners in individual and group office hours, build toward Demo Day and use the alumni community for feedback, hiring and introductions. Companies can apply before launch; YC also accepts businesses that already have users and revenue.

Sources
Rounds participated in
158
Confirmed lead rounds
5
100 roles undisclosed
New companies
156
First participation on record · 2 follow-on
Funding in participating rounds
$8.5B
149 disclosed · full round size, not this investor’s share

By stage

Series A52
Seed47
Series C+21
Series B19
Undisclosed10
1 more
Pre-seed9

By primary sector

AI31
Fintech27
Enterprise software22
Developer tools18
Healthtech17
15 more
Biotech7
Space tech5
Proptech4
Robotics4
Cybersecurity3
Defense tech3
Ecommerce3
Logistics3
Mobility3
Business services2
Climate tech2
Agritech1
Edtech1
Hardware1
Industrial tech1

By country

United States128
France5
Germany4
Sweden4
United Kingdom4
9 more
2
Belgium2
Canada2
India2
Brazil1
Denmark1
Poland1
Saudi Arabia1
Switzerland1

Rounds

158 in all activity
Vector Legal

Vector Legal combines lawyers, paralegals and custom AI to deliver startup legal services and technology-enabled workflows.

$5.2MSeed
Lead
HappyRobot

Deploys AI agents automating enterprise operations across voice, email and documents

$150MSeries C
Role not disclosed
Andromeda Surgical

Andromeda Surgical develops autonomous surgical robots combining anatomical mapping and surgeon oversight, initially for prostate enucleation.

$15MSeries A
Participant
Terminal

Provider of unified telematics integration technology transforming operations across insurance, fleet management and logistics companies

$20MSeries A
Role not disclosed
Centralize

Relationship intelligence platform for enterprise revenue teams

$19MSeed+
Role not disclosed
Henry AI

AI platform automating back-office knowledge work for commercial real estate teams

$16.5MSeries A
Role not disclosed
Array Labs

Building a new way to understand the physical world

$21MStrategic
Role not disclosed
Healia

Healia is a healthcare benefits platform built for dual-income families.

$14MSeries A
Role not disclosed
Scape

Intelligent email inbox that prepares work proactively

$3.2MSeed
Role not disclosed
telli

AI startup automating customer-facing operations with AI agents

$15MSeed
Role not disclosed
Candid Health

Automates the financial infrastructure of American healthcare

$120MSeries D
Role not disclosed
Emergent

AI software creation platform for building full-stack, production-ready web and mobile applications

$130MSeries C
Role not disclosed
Bunkerhill Health

Bunkerhill Health builds an agentic AI platform for health systems to turn their ideas into reality

$25MSeries B
Role not disclosed
Hadrius

Hadrius provides an AI-native compliance infrastructure for financial services firms

$27MSeed+Series A
Role not disclosed
Singularity

Building a safer world by deploying low-cost air defense systems at scale

$80MSeries A
Role not disclosed
Ollama

Ollama provides tools for developers to use open AI models.

$65MSeries B
Role not disclosed
Finto

Builds AI agents for autonomous accounting tasks

$3.4MSeed
Role not disclosed
Fleek

Develops AI infrastructure for secondhand clothing industry

$25MSeries B
Role not disclosed
Agave

Automates accounting and back-office work for construction contractors using AI

$15MSeries A
Role not disclosed
Sazabi

AI-native observability platform for fast-moving engineering teams

$8MSeed
Role not disclosed
Coval

Provides evaluation platform for voice AI quality

$28MSeries A
Role not disclosed
Taktile

Enables financial institutions to automate and optimize decisions with AI

$110MSeries C
Participant
JustAI

Automates personalization, experimentation, and decisioning for enterprise marketing teams at scale

$17MSeries A
Role not disclosed
Prosper AI

Automates the patient journey from scheduling and insurance to billing and collections

$30MSeries A
Role not disclosed
Flagright

AI operating system for financial crime compliance unifying transaction monitoring, screening, case management, and governance

$12.5MSeries A
Role not disclosed
Bland

Provides voice AI for complex, high-stakes conversations

$50MSeries C
Role not disclosed
F2

An AI workflow platform for institutional credit screening, underwriting and portfolio monitoring.

$14MSeed+
Role not disclosed
SyntheticFi

Provides low-cost, tax-efficient portfolio-backed financing solutions for registered investment advisors

$13MUndisclosed
Role not disclosed
Stepful

Offers accelerated, affordable training for healthcare careers

$55MSeries C
Role not disclosed