• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
TechPeter Thiel

Y Combinator Has Quietly Cut Ties With Peter Thiel

By
David Z. Morris
David Z. Morris
Down Arrow Button Icon
By
David Z. Morris
David Z. Morris
Down Arrow Button Icon
November 19, 2017, 5:09 PM ET

Peter Thiel, a venture capitalist as famous for his controversial activism as for his savvy tech investments, is no longer a part-time partner at Silicon Valley startup incubator Y Combinator. The parting of ways comes after a year in which Thiel’s politics, including vocal support of Donald Trump’s presidential ambitions, put Thiel at odds with many of his peers in the tech world.

Y Combinator and its president, Sam Altman, have declined to comment on the matter to multiple news outlets. But a 2015 blog post announcing Thiel’s arrival has been updated with the announcement that “Peter Thiel is no longer affiliated with Y Combinator.” The change was first reported by BuzzFeed News.

Thiel was a relatively uncontroversial addition to Y Combinator in 2015, when Altman praised his involvement with massive tech winners including PayPal and Facebook, and called Thiel “one of the two people . . . who has taught me the most about how to invest in startups.”

But Thiel has since courted controversy on at least two fronts. In May of 2016, it emerged that Thiel had funded a lawsuit against the news website Gawker over its publication of a sex tape featuring wrestler Hulk Hogan. The move was apparently in retaliation for Gawker’s 2007 public outing of Thiel as gay, but many saw it as a disturbing use of wealth to silence the media.

Get Data Sheet, Fortune’s technology newsletter.

Then Thiel made a large campaign contribution to then presidential candidate Donald Trump, saying that Trump “rejects bubble thinking.” Altman at the time said that while he personally opposed Trump and disagreed with Thiel, that disagreement was not a good reason to end Thiel’s role at Y Combinator.

That seems to have changed. A source told BuzzFeed that Y Combinator ended its part-time partners program last year, but that while some other participants remained with the incubator in different roles, Thiel did not.

The reality of a Trump presidency clearly made Y Combinator’s association with Thiel more complicated. When the incubator joined forces with the ACLU, which had fought Trump’s travel ban, full-time partner Kat Manalac had to clarify that Thiel “will definitely have no interaction with the ACLU.” More broadly, Silicon Valley execs have almost uniformly opposed Trump’s stances on immigration, which stood to seriously throttle their access to global talent.

More recently, Altman, who has said he is a Democrat, has announced that he will support a slate of candidates in California elections in 2018. That could put him in more direct conflict with Thiel, who has denied plans to run for governor there, but still seems likely to be politically engaged.

About the Author
By David Z. Morris
See full bioRight Arrow Button Icon

Latest in Tech

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Tech

Photo of vegan cheese products
AITech
A Mark Cuban–backed vegan cheese company trained AI to scrutinize cardboard boxes. It’s saved $400,000
By Jake AngeloMay 1, 2026
14 hours ago
Young trade worker learning on job
SuccessHiring
Forget Big Tech: Small businesses will hire nearly 1 million grads in 2026—and some of the hottest roles are gloriously AI-proof
By Emma BurleighMay 1, 2026
15 hours ago
Andrew McAfee
SuccessCareers
MIT AI expert warns automating Gen Z entry-level jobs could backfire—and cost companies their future workforce
By Preston ForeMay 1, 2026
15 hours ago
duke
Big TechAmazon
Amazon Prime Video reaches deal with Duke Blue Devils to air 3 games per season
By The Associated PressMay 1, 2026
17 hours ago
valerie
CommentaryLayoffs
Tesla’s former HR chief: the AI layoff panic Is built on a false premise—here’s what most workers need to know
By Valerie Capers WorkmanMay 1, 2026
18 hours ago
AI
AIdisruption
Meet the Americans dismissing AI hype and using it with ingenuity: ‘The efficiencies gained out of it have been tremendous’
By Cathy Bussewitz and The Associated PressMay 1, 2026
18 hours ago

Most Popular

Scott Bessent on financial literacy: 'it drives me crazy' to see young men in blue-collar construction jobs playing the lottery
Personal Finance
Scott Bessent on financial literacy: 'it drives me crazy' to see young men in blue-collar construction jobs playing the lottery
By Fatima Hussein and The Associated PressMay 1, 2026
18 hours ago
China dominates the world's lithium supply. The U.S. just found 328 years' worth in its own backyard
North America
China dominates the world's lithium supply. The U.S. just found 328 years' worth in its own backyard
By Jake AngeloApril 30, 2026
2 days ago
The U.S. economy is booming — just not where 50 million Americans live
Commentary
The U.S. economy is booming — just not where 50 million Americans live
By Derek KilmerMay 1, 2026
22 hours ago
Apple cofounder Ronald Wayne—whose stake would be worth up to $400 billion had he not sold it in 1976—says that at 91, he has no regrets
Success
Apple cofounder Ronald Wayne—whose stake would be worth up to $400 billion had he not sold it in 1976—says that at 91, he has no regrets
By Preston ForeApril 27, 2026
5 days ago
Current price of oil as of May 1, 2026
Personal Finance
Current price of oil as of May 1, 2026
By Joseph HostetlerMay 1, 2026
18 hours ago
Accenture's Julie Sweet blew up 50 years of company history. She says the hardest part is still ahead
Conferences
Accenture's Julie Sweet blew up 50 years of company history. She says the hardest part is still ahead
By Nick LichtenbergApril 29, 2026
3 days ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.