This Week’s Top Founders

Kalshi raised a $1B Series G on 28 October at $40B post-money, co-led by Sequoia and Wellington Management, and earlier reports had the round at $750M, so it came in larger.

  1. Dhruvik P. in SF (Stealth)

    1. Role: 1st FTE & Engineering + Product @ Kalshi (3 yrs)

    2. Other Experience: Founding Engineer @ Mithril ($80M co-led by Sequoia and Lightspeed at a reported $350M)

    3. Description: Stealth since 9/25

  2. Ben Rapport in SF (Potential Founder)

    1. Role: Founding Engineer @ Kalshi (2 yrs)

    2. Other Experience: Co-Founder @ Stealth Startup, Quant @ Citi, Researcher @ University of Chicago, Quant @ U.S. Commodity Futures Trading Commission

    3. Description: Left stealth co on 4/26

  3. Daniel Chiu in SF (Potential Founder)

    1. Role: Product & Engineering @ Kalshi (<1 yr)

    2. Other Experience: Product & Engineering @ Cognition, Product & Engineering @ Watershed, Trading Intern @ Jane Street, Software Engineer @ Figma, Software Engineer @ Quora

    3. Description: Transition from Product —> Advisor @ Cognition on 12/25

  4. Rhea S. in United States (Potential Founder)

    1. Role: Chief Of Staff @ Kalshi (<1 yr)

    2. Other Experience: Growth Lead @ Unify, Software Engineer @ Mach Industries, Investment Engineer @ Bridgewater Associates

    3. Description: Left Unify on 11/25

Legora raised a $550M Series E at an $8.8B valuation on 21 October, led by Atreides Management, with Baron Capital, Bessemer Venture Partners, General Catalyst and Menlo joining. That is up from $5.6B in April, when a $50M extension closed out a $550M Series D led by Accel, so the valuation has risen roughly 57% in six months.

  1. Emil Sjölander in Stockholm (Potential Founder)

    1. Role: Director of Product Engineering @ Legora (<1 yr)

    2. Other Experience: Director of Engineering @ Figma, CEO & Co-Founder @ Visly Inc (backed by YC —> acquired by Figma), SWE @ Facebook

    3. Description: Left Legora on 10/26

  2. Arvid Lagerqvist in Stockholm (Potential Founder)

    1. Role: Founding Software Engineer @ Legora (<1 yr)

    2. Other Experience: Founder @ Favora (Backed by operators and investors at OpenAI, Node.vc and Wave Venture)

    3. Description: Left Favora on 9/26

  3. Jules Ioannidis in Stockholm (Potential Founder)

    1. Role: Product Manager @ Legora (<1 yr)

    2. Other Experience: Co-Founder / COO @ Graceview (acquired by Legora), Lawyer @ Mills Oakley, Associate | NewLaw @ PwC Australia Description: Left Legora 7/26 with no updates

  4. Cem Ucan in SF (Founder @ Athena)

    1. Role: Founding Legal Engineer @ Legora (1.5 yrs)

    2. Other Experience: Innovation Product Manager @ Baker McKenzie, Associate @ ELIG

    3. Description: "A LAW FIRM FOR THE FUTURE TO CLOSE DEALS FASTER WITH ELITE LAWYERS AND AI AGENT”

Physical Intelligence, the San Francisco robotics foundation-model company, is in talks to raise at least $1B at a valuation of about $20B, Bloomberg reported, with existing shareholders Lux Capital and Avenir said to be in talks to lead.

  1. Mohith Mothukuri in SF (Potential Founder)

    1. Role: Founding Member of Technical Staff, 1st hardware engineer @ Physical Intelligence (1 yr)

    2. Other Experience: Senior Mechatronics Engineer @ Anduril Industries, Managing Partner @ Rough Draft Ventures

    3. Description: Left Physical Intelligence in 2025 with no updates

  2. Keith Williams in Menlo Park (Stealth)

    1. Role: Member of Technical Staff @ Physical Intelligence (<1 yr)

    2. Other Experience: Founding Team, Head of Product & Data @ Dyna Robotics ($144M from CRV, First Round, Nvidia, Amazon and Salesforce), Director of Design & Program Management @ Instacart

    3. Description: Stealth since 10/26

Fluidstack is being pitched to investors at a $40B valuation, Bloomberg reported on 29 October. The pitch is being run by Situational Awareness, Leopold Aschenbrenner's fund, which also led its $830M Series A at $7.5B in January and co-pitched the roughly $1.5B round led by Jane Street at over $18B in September.

  1. Peter Francis in SF (Stealth)

    1. Role: Co-Founder @ Fluidstack (2.5 yrs)

    2. Description: Stealth since 11/25

  2. Reaal Khalil in UK (Potential Founder)

    1. Role: Co-Founder @ Fluidstack (2 yrs)

    2. Other Experience: Head of DeFi @ Nickel Digital Asset Management, SWE @ Bloomberg, Oxford MPhys Physics

    3. Description: Left Nickel Digital 11/22, no updates since

    4. Contact: Site, [email protected]

  3. Raj S. in SF (Stealth)

    1. Role: Founding Team @ Fluidstack (1.5 yrs)

    2. Other Experience: Chief Executive Officer @ Rivals Gaming

    3. Description: Stealth since 7/26

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