BigBrain Holdings
About BigBrain Holdings
BigBrain Holdings was founded in 2021, and PitchBook and its LinkedIn page both list Weston, Florida as its base. Sam Kim is named as managing partner in one directory and as general partner in another, and Vasyl Spivak is listed as a partner. Thomas Helm is listed as a venture partner. The firm began as a crypto-exclusive fund with early bets on Solana, and its founder is publicly known only by the pseudonym SolBigBrain. Public profiles give conflicting office cities, so Weston is the only location used here.
Most of the firm's recorded deals are in blockchain and Web3, but it also has a set of AI-focused investments. Oh, an AI company, raised a seed round of $4.5M in January 2025. Kiva AI raised a $7.0M pre-seed round in October 2024, and cookie3 raised a $5.5M Series A in June 2024. USD.AI, which combines AI and DeFi infrastructure, raised a $13.4M Series A in August 2025 with the firm as one of its investors. Fortytwo, a decentralized AI network, received a $2.3M seed round in 2025 that the firm reportedly led alongside CMT Digital. On Lounge's deals desk, the latest AI rounds are PERPTools (seed, $5M, October 2026) and GenFlux (seed, $4.2M, February 2026).
Public directories describe the firm as an early-stage investor. Tracxn counts 102 seed and 25 Series A investments, with a small number of later rounds. Goldilocks AI lists pre-seed, seed and Series A. One directory gives a range of $100,000 to $5,000,000 with a $1.5M sweet spot, while another lists $1M to $50M. These figures conflict and the firm has not published a check-size policy. The average round sizes Tracxn reports, about $5.1M for seed and $7.6M for Series A, describe whole rounds and are not the firm's own checks.
- Oh: AI company, seed round of $4.5M (January 2025)
- Kiva AI: AI company, pre-seed round of $7.0M (October 2024)
- cookie3: AI company, Series A round of $5.5M (June 2024)
- USD.AI: AI and DeFi infrastructure, Series A round of $13.4M (August 2025)
- Fortytwo: decentralized AI network that runs small AI models on consumer devices, seed round of $2.3M (2025)
- PERPTools: seed round of $5M (October 2026, Lounge deals desk)
- GenFlux: seed round of $4.2M (February 2026, Lounge deals desk)
- pitchbook.com/profiles/investor/484451-65
- linkedin.com/company/big-brain-holdings
- seedtable.com/investors/big-brain-holdings
- tracxn.com/d/venture-capital/big-brain-holdings/**BLhBzDgmGqvwd-c0NE3c
- icoanalytics.org/funds/big-brain-holdings
- coinmagnetic.com/en/investors/big-brain-holdings
- goldi.ai/intelligence/vc/big-brain-holdings
- angelspartners.com/firm/BigBrainHoldings
Investing activity
BigBrain Holdings appears in 2 AI deals tracked by the AI Lounge deals desk. The rounds are mostly Seed, with a median round size of $5M. The most recent are PERPTools (Seed, $5M, Oct 2026) and GenFlux (Seed, $4.2M, Feb 2026).
BigBrain Holdings most often invests alongside Animoca Brands, Sfermion, Shima Capital and NEAR, and the companies it backs on AI Lounge are mostly in AI.
Deals
Frequently asked questions about BigBrain Holdings
When was BigBrain Holdings founded?
BigBrain Holdings was founded in 2021 and is based in Weston, Florida, according to PitchBook and its LinkedIn page.
What stages does BigBrain Holdings invest in?
Public directories show the firm mainly investing at seed and Series A, with some pre-seed deals. The firm has not published a check-size policy.
Which AI startups has BigBrain Holdings backed?
Recorded AI investments include Oh, Kiva AI, cookie3, USD.AI and Fortytwo. Lounge's deals desk also lists PERPTools and GenFlux seed rounds.
Who leads the AI investing at BigBrain Holdings?
Directories name Sam Kim and Vasyl Spivak as partners. Public sources do not describe which partner leads AI deals specifically.
Does BigBrain Holdings invest only in AI?
No. The firm's largest recorded focus is blockchain and Web3, and Lounge lists AI and robotics among its current focus areas.
What AI companies has BigBrain Holdings invested in?
BigBrain Holdings's AI investments include PERPTools and GenFlux. The 2 rounds on AI Lounge are listed on this page with amounts, dates and co-investors.
Where is BigBrain Holdings based?
BigBrain Holdings is based in Weston, United States.
What stage does BigBrain Holdings invest at?
In the rounds tracked on AI Lounge, BigBrain Holdings has invested at Seed, with a median round of $5M.
Who does BigBrain Holdings co-invest with?
BigBrain Holdings's most frequent co-investors on AI Lounge are Animoca Brands (1 deal), Sfermion (1 deal), Shima Capital (1 deal), NEAR (1 deal) and Symbolic Capital (1 deal).
How can founders reach BigBrain Holdings?
Founders on AI Lounge can see BigBrain Holdings'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 BigBrain Holdings to their Investor Pipeline to track the conversation.