Big Brain Holdings is a Los Angeles-based venture capital firm founded in 2021 that focuses exclusively on crypto and blockchain investments. The fund invests in pre-seed, seed, and early-stage projects , with 126 portfolio companies as of October 2025 . The firm describes itself as "rooted in cypherpunk" and backs founders pursuing radical ideas on emerging technological frontiers.
Big Brain Holdings has made most investments in the United States (55 companies), followed by Singapore (11 investments) . The fund has shown particular focus on Solana projects , with early investments in the ecosystem dating back to its inception. The firm primarily invests in Seed rounds in United States-based startups , though their portfolio spans 26 countries across multiple sectors including DeFi, gaming, NFTs, and infrastructure.
Notable Investments
Big Brain Holdings' most notable investments include Obscuro and Eclipse FI . The portfolio spans blockchain infrastructure, decentralized finance, Web3 gaming, and social platforms. Recent activity includes participation in KapKap's $10 million raise in October 2025 , Raiku's $13.5 million round in September 2025 , and Burstverse's seed funding in June 2025 .
The fund has demonstrated conviction during market downturns. Big Brain Holdings accumulated a $3.4 million position in Hyperliquid (HYPE) during recent price dips , signaling smart money entry during periods of market fear. The firm led a $2.3 million Seed round for Fortytwo alongside CMT Digital in 2025. Portfolio exits include Cube, which was acquired in October 2025 by Mercer Park Opportunities , and two IPOs including Helius Medical (Toronto Stock Exchange) and Forward Industries (NASDAQ) .
Team
The fund was founded by SOLBigBrain , though detailed background information on the founder is limited in public sources. Sam Kim serves as General Partner at Big Brain Holdings . Additional team members identified in public records include Thomas Helm (Venture Partner) and other partners including River Fields, Jonathan Wong, Jorge Cantera, and Kavita Singh, though comprehensive backgrounds for the team remain limited in publicly available information.
Public information about the firm's total assets under management has not been disclosed. The team size is listed as 11-50 employees , with headquarters in Weston, Florida .
Recent Activity
The fund made 12 to 14 new investments in the 12 months through late 2025 , maintaining active deployment despite broader market challenges. The most recent investment tracked was in Watch.fun on March 25, 2026 . The firm co-invests frequently with other crypto-focused funds including Shima Capital (12 companies) and Borderless Capital (11 companies) .
The fund has demonstrated sector focus across 112 tech companies, 95 blockchain companies, 68 consumer (B2C) companies, and 67 enterprise (B2B) companies . Big Brain Holdings has participated in rounds alongside major names including Hack VC, Pantera Capital, and Animoca Brands .
Big Brain Holdings remains an active player in early-stage crypto investing, with a track record spanning both successful exits and continued commitment during market volatility. The firm's Solana ecosystem expertise and willingness to deploy capital during downturns positions it as a conviction-driven investor. However, with a retail ROI of 0.86x, the portfolio reflects the challenging 2022-2024 crypto market cycle. Further details on specific fund returns, LP composition, and strategic initiatives remain undisclosed publicly.
