PEAK6
PEAK6 Investments LLC is a private financial services and investment firm based in Austin, Texas. Founded in 1997 by Matt Hulsizer and Jenny Just, the company has grown from a proprietary equity options trading firm into a diverse global enterprise with a portfolio valued at over $23 billion. PEAK6 specializes in proprietary trading, investment management, and fintech solutions, operating across four primary business areas. The firm focuses on proprietary trading, managing capital through various investment vehicles, and developing fintech solutions. Notable subsidiaries include APEX Fintech
Investing activity
PEAK6 appears in 1 AI deal tracked by the AI Lounge deals desk, rounds totalling $20M. The rounds are mostly Seed, with a median round size of $20M. The most recent is Astromech (Seed, $20M, Aug 2026).
PEAK6 most often invests alongside Robert Nelsen, CAZ Investments, Builders VC and NeoGenesis Capital, and the companies it backs on AI Lounge are mostly in AI.
Deals
Frequently asked questions about PEAK6
What AI companies has PEAK6 invested in?
PEAK6's AI investments include Astromech. The 1 round on AI Lounge are listed on this page with amounts, dates and co-investors.
Where is PEAK6 based?
PEAK6 is based in Chicago, Illinois, United States.
What stage does PEAK6 invest at?
In the rounds tracked on AI Lounge, PEAK6 has invested at Seed, with a median round of $20M.
Who does PEAK6 co-invest with?
PEAK6's most frequent co-investors on AI Lounge are Robert Nelsen (1 deal), CAZ Investments (1 deal), Builders VC (1 deal) and NeoGenesis Capital (1 deal).
How can founders reach PEAK6?
Founders on AI Lounge can see PEAK6's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with the firm under Warm Paths, and add PEAK6 to their Investor Pipeline to track the conversation.