Castle Fund
Castle Analytics LLC and its subsidiaries (collectively, "Castle Funds") have been managing private funds invested in digital currencies since 2017. The firm's integrated platform provides a secure solution for adding digital currency exposure to a well-balanced portfolio. Castle's investment and technology teams are selectively comprised of senior-level professionals from firms such as Goldman Sachs, BlackRock, SLK-Hull Derivatives, Samsung, and Wells Fargo. For important disclosures about the Fund and Strategy, please see http://castlefunds.com/disclaimer.
Investing activity
Castle Fund appears in 1 AI deal tracked by the AI Lounge deals desk. The rounds are mostly Seed, with a median round size of $4M. The most recent is Overlord Labs (Seed, $4.3M, Jul 2026).
Castle Fund most often invests alongside Band of Angels, Futureland Ventures, NuFund Venture Group and Sand Hill Angels, and the companies it backs on AI Lounge are mostly in AI.
Deals
Frequently asked questions about Castle Fund
What AI companies has Castle Fund invested in?
Castle Fund's AI investments include Overlord Labs. The 1 round on AI Lounge are listed on this page with amounts, dates and co-investors.
Where is Castle Fund based?
Castle Fund is based in Richmond, California, United States.
What stage does Castle Fund invest at?
In the rounds tracked on AI Lounge, Castle Fund has invested at Seed, with a median round of $4M.
Who does Castle Fund co-invest with?
Castle Fund's most frequent co-investors on AI Lounge are Band of Angels (1 deal), Futureland Ventures (1 deal), NuFund Venture Group (1 deal), Sand Hill Angels (1 deal) and Unlock Pacific Ventures (1 deal).
How can founders reach Castle Fund?
Founders on AI Lounge can see Castle Fund'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 Castle Fund to their Investor Pipeline to track the conversation.