YC Spring 2026 (P26) founder

Matthew McBrien

Founder of Cohesion, Agents that automate research for institutional investors

Company

Matthew McBrien is listed as a founder of Cohesion. Cohesion is building AI agents for hedge funds. Our agents track earnings and non-traditional datasets like podcasts and X/twitter. Analysts spend hours a week manually tracking these data sources and still miss relevant investing signals. Now, our agents do it for them autonomously.

Founder traction evidence

Public posts and activity attributed directly to this founder.

  1. LinkedIn

    My face when someone asks me if I had fun in SF.

    [Skip to main content](https://linkedin.com/posts/matthew-mcbrien-784b32116_my-face-when-someone-asks-me-if-i-had-fun-activity-7473785881707864064-CH1X#main-content)[LinkedIn](https://linkedin.com/?trk=[redacted-public-param]) * [Top...

  2. LinkedIn

    YC Founders Share Happiness and Growth Strategies | Matthew McBrien posted on the topic | LinkedIn

    [Skip to main content](https://linkedin.com/posts/matthew-mcbrien-784b32116_heard-from-paul-graham-and-jessica-livingston-activity-7468158542626246656-ZwmE#main-content)[LinkedIn](https://linkedin.com/?trk=[redacted-public-param]) * [Top...

  3. LinkedIn

    Cut LLM Costs by 40% with Agentic Workflows | Matthew McBrien posted on the topic | LinkedIn

    [Skip to main content](https://linkedin.com/posts/matthew-mcbrien-784b32116_just-cut-our-monthly-llm-cost-by-40-some-activity-7469821155315470336-noLe#main-content)[LinkedIn](https://linkedin.com/?trk=[redacted-public-param]) * [Top...

  4. X

    *the most stressed person you’ve ever seen* ugh! there’s never any parking here! *me pulling up on the bus, completely dissociative*

    *the most stressed person you’ve ever seen* ugh! there’s never any parking here! *me pulling up on the bus, completely dissociative*

  5. X

    when I dance, this is who I’m channeling fyi

    when I dance, this is who I’m channeling fyi

  6. X

    *boss asks me to do simple task* Double it and give it to the next person

    *boss asks me to do simple task* Double it and give it to the next person

  7. X

    what it felt like walking out of Marty Supreme (2025)

    what it felt like walking out of Marty Supreme (2025)

  8. X

    throw out "taste"... ngmi if you don't have "theory of mind"

    throw out "taste"... ngmi if you don't have "theory of mind"