Crypto-invest:~$
Castle Island Ventures

Castle Island Ventures

7
Rounds
$95M
Invested

Castle Island Ventures is a thesis-driven VC focused on public blockchain infrastructure and the companies building on top of it. The fund targets early-stage deals, backing founders working on financial services, compliance tools, data infrastructure, and enterprise adoption of crypto rails. Known for a research-heavy approach, the team publishes substantive analysis on crypto market structure that practitioners actually read.

Portfolio

ProjectCategoryRoundAmountDateInvestors
CyclopsCyclopsPaymentsSeries A$20MJul 15, 2026NNana VenturesCoinbase VenturesCoinbase VenturesCCircle Ventures+3 more
VValinorBankingSeed$25MMar 30, 2026Castle Island VenturesCastle Island VenturesSSIG DT InvestmentsMMaven 11
XXFXBankingSeries A$17MMar 26, 2026Castle Island VenturesCastle Island VenturesCoinbase VenturesCoinbase VenturesHHaun Ventures
CyclopsCyclopsPaymentsStrategic$8.0MMar 4, 2026Castle Island VenturesCastle Island VenturesFF PrimeSShift4
Birch HillBirch HillFinancePre-seed$2.5MFeb 11, 2026Ramin KamfarRamin KamfarenzoenzoEscape VelocityEscape Velocity+11 more
BBirch Hill HoldingsRWAPre-Seed$2.5MFeb 11, 2026ParaFi CapitalParaFi CapitalCastle Island VenturesCastle Island VenturesNascentNascent+6 more
PProject ElevenInfrastructureSeries A$20MJan 14, 2026Castle Island VenturesCastle Island VenturesCoinbase VenturesCoinbase VenturesLLattice Fund+4 more