Y Combinator

Y Combinator was founded in 2005 by Paul Graham, Jessica Livingston, Robert Morris, and Trevor Blackwell. The firm is classified as a technology startup accelerator—meaning that it's investors focus on seed stage companies, investing relatively small amounts of capital while offering guidance and business counsel. Y Combinator is selective in choosing what companies to support, announcing two "batches" of companies each year that the firm's investors believe have a strong future as high growth businesses. When a company grows beyond the seed stage, Y Combinator may continue to offer financial and strategic support through a separate program and fund that the firm created for this purpose. The firm has earned a reputation as being one of the most successful startup accelerators in Silicon Valley.

Y Combinator reports that since 2005, it has invested in "over 3,000 companies that are worth over $400B combined." An impressive number of large companies received support from Y Combinator at some point in their development, including Airbnb, Stripe, Instacart, Dropbox, Coinbase, DoorDash, and Reddit. Other portfolio companies that went on to go public through an IPO include GitLab, PagerDuty, and Weave.

Investment Stages
Seed, Early Stage
Founded
2005
Headquarters
Mountain View, California
Founders
Paul Graham, Jessica Livingston, Robert Morris, Trevor Blackwell
Register for Details

To get more details on any new investment opportunities, sign up for Forge today.

Please provide your first name.
Please provide your last name.
Please provide a valid email address.

Already registered? Click here to log in

Top Y Combinator Sectors

Consumer & Lifestyle
Enterprise Software
FinTech
Transportation
Healthcare
Industrial

Trending Y Combinator Ventures

Sector
Last Round Est. Valuation
$1.5B
Sector
Last Round Est. Valuation
$5.75B
Sector
Last Round Est. Valuation
$1.09B
Sector
Last Round Est. Valuation
$39.13B
Sector
Last Round Est. Valuation
$2.05B
Sector
Last Round Est. Valuation
$1.5B
Sector
Last Round Est. Valuation
$1B
Sector
Last Round Est. Valuation
$1.84B

Y Combinator Portfolio

Quick Search
Filters
Sector
Last Round Est. Valuation
$39.13B
Sector
Last Round Est. Valuation
$30.96B
Sector
Last Round Est. Valuation
$130MM
Sector
Last Round Est. Valuation
$532.97MM
Sector
Last Round Est. Valuation
$1B
Sector
Last Round Est. Valuation
$11.99B
Sector
Last Round Est. Valuation
$1.84B
Sector
Last Round Est. Valuation
$643.73MM
Sector
Last Round Est. Valuation
$5.75B
Sector
Last Round Est. Valuation
$800.01MM
Sector
Last Round Est. Valuation
$1.5B
Sector
Last Round Est. Valuation
$560MM

Other Top VCs

Request a change to this page through our contact form.