Karatage Research
Investment Thesis
Karatage is a London-based crypto and digital-assets investment firm founded in 2017. It operates as a hybrid vehicle: part venture fund writing direct checks into early-stage blockchain, DeFi, and Web3 infrastructure companies, and part liquid/hedge strategy taking token and LP positions in tier-1 crypto fund managers. Co-Founder and CEO Marius Barnett has described the firm's approach as grounded in "high-quality infrastructure and deep tech," with a stated goal of "building the foundation for the future of financial markets infrastructure." This shows up in the portfolio as a tilt toward market infrastructure, custody, DeFi lending/restaking primitives, and RWA tokenization rather than purely speculative consumer crypto plays.
Sector Focus
Karatage's investments span:
- Blockchain infrastructure and market infrastructure (e.g., digital-asset trading/custody infrastructure)
- DeFi (lending markets, restaking, insurance)
- GameFi (Web3 gaming)
- Real-world asset (RWA) tokenization
- AI-adjacent crypto and data infrastructure
- DePIN (decentralized physical infrastructure, notably in the Sui ecosystem)
The firm is also active as an LP in other tier-1 crypto fund managers, including Multicoin Capital, Parafi, BitKraft, Asymmetric, Hypersphere, Animoca, Sfermion, Kingsway, 6th Man Ventures, Folius, KR1, Portal, and RedBeard — a fund-of-funds layer on top of its direct venture book.
Stage Focus
Karatage invests primarily at Seed and Series A, with selective participation in Series B and later rounds for portfolio follow-ons or high-conviction infrastructure bets (e.g., Talos's Series B extension). Public tracking data shows roughly 12 Seed, 6 Series A, 3 Series B, and 1 Series D investment across its book.
Check Size
Exact check sizes are not disclosed publicly. Third-party trackers report average round sizes of roughly $5M at Seed and $9M at Series A for rounds Karatage has participated in, but these are round totals (often syndicated), not confirmed Karatage check sizes — treat with low confidence.
Lead Tendency
Karatage both leads and follows: public data shows roughly 8 lead investments out of ~30 total, so it is best characterized as a syndicate participant that will lead selectively for infrastructure-grade opportunities.
Recent Activity
The firm has been actively deploying through 2025 and into 2026, with roughly 5 new investments in 2026 year-to-date (as of mid-2026) following 5 in 2025. Recent activity includes an AI-sector investment in Nof1 (May 2026), participation in Talos's Series B extension to $150M (January 2026), and a string of DeFi/GameFi/RWA deals through 2025 (Uranium Digital, Suilend, Soter Insure, GOAT Gaming, Fraction AI, BetHog, and others).
Portfolio Highlights
Karatage's standout portfolio company is Talos, a digital-asset markets infrastructure company that has reached unicorn status; Raise is tracked as a "soonicorn." Other notable names include SUI Group Holdings, Walrus Protocol, Renzo Protocol, Suilend, and Akedo Games — several of which sit inside the Sui blockchain ecosystem, suggesting a thematic concentration there alongside broader multi-chain DeFi and GameFi exposure.
Team
- Marius Barnett — Co-Founder & CEO
- Stephen Mackintosh — Partner
- Michael Vasiloudis — Partner
- Samantha Andrews — Partner
- Shane O'Callaghan — Senior Partner, Head of Institutional Strategy; joined January 2026 from IMC Trading, previously at Portofino Technologies and BlockFi
- George Bardwell — Principal
The firm is small (LinkedIn lists roughly 2-15 employees), consistent with a partnership-style decision process rather than a large investment committee.
Decision Process
With four-plus partners and a principal, Karatage appears to run a partnership-style decision process rather than a solo-GP or large-committee model, though this is inferred rather than confirmed.
Founder Preferences
Publicly available material does not describe explicit founder preferences. Given the portfolio composition, the firm appears to favor technical, infrastructure-minded founders building in market infrastructure, DeFi primitives, and blockchain tooling over purely consumer-facing crypto apps.
Geographic Focus
Karatage is headquartered in London, but its direct investments skew toward the United States (roughly 7 of its tracked deals) with some exposure to Switzerland (2) and a broader global footprint typical of crypto-native investing, where portfolio companies and protocols are often geographically distributed or pseudonymous.
Notes on Research Quality
Karatage's own website (karatage.io) is a minimal splash page (an email contact link only, no portfolio/team/thesis subpages), so this research relies primarily on third-party trackers (Tracxn, CryptoRank, RootData, ICO Drops, LinkedIn) and press coverage (CoinDesk, FinTech Futures, PR Newswire). Portfolio company counts, dates, and team composition should be treated as directionally accurate but not fully verified against primary firm sources.