Fundraising FoxCastle Island Ventures — 2026 Investments
9 investments dated 2026 · listed companies and verified rows first · show all
XFX operates a liquidity layer that provides unified fiat and stablecoin liquidity with intelligent routing and near-instant settlement, letting institutions trade across fiat and stablecoin pairs without pre-positioning capital.
Crypto & Web3Data & InfrastructureFintechMiami, US
Santiago Alvarado(Co-founder & CEO)in
Co-investorsHaun VenturesOak HC/FTCoinbase VenturesMAYA CapitalMAYA Capital VenturesPaxos
Cyclops is a unified crypto and stablecoin platform built specifically for payments companies, combining licensing, custody, compliance, and 24/7 settlement into a single integration.
Crypto & Web3FintechSaaSMiami, US
Alex Wilson(Founder)in
Board seatSean Judge· per SEC Form D
Co-investorsF-Prime CapitalNava VenturesCircle & Co.Coinbase Ventures
Birch Hill provides infrastructure and risk management tools for institutional investors to allocate capital and trade assets on blockchain networks.
Crypto & Web3Data & InfrastructureFintechOld Westbury, US
Raizada Bhavin Vaid(Executive Officer, Director, Promoter)Jack ForlinesinBhavin V.in
BoardConnor Flanagan(Director)inShayon Sengupta(Director)
Co-investorsMulticoin CapitalParaFi CapitalParafi General FundFalconX VenturesFlowdesk
Birdai builds tools to measure, verify, and recover value lost between an order and its fill on onchain markets, using a single metric (β) to quantify execution quality.
Crypto & Web3Data & InfrastructureFintech
Kevin FarrellyinGreg ScanloninJames McClain
Co-investorsDepartment of XYZMetalayerVenture Dept.
Cyclops Medtech develops a portfolio of vestibular diagnostic and therapy products—including videonystagmography (VNG/VOG), video head impulse testing (vHIT), dynamic visual acuity, stabilometry platforms, VR-based vestibular rehabilitation, and a smart balance board—to diagnose and treat dizziness and balance disorders.
Digital HealthHealthtechMedical Devices
Co-investorsCapria VenturesCircle & Co.Coinbase VenturesF-Prime CapitalNava Ventures
Project Eleven builds post-quantum cryptography and migration tooling for Bitcoin, Ethereum and other digital asset networks.
Co-investorsAmbush CapitalCoinbase VenturesFin CapitalLattice CapitalQuantonationVariant Fund+2 more
Allentown, US
Jared Isaacman(Executive Officer, Director)Bradley Herring(Chief Financial Officer)Jordan Frankel(General Counsel and Secretary)inTaylor Lauber(President and Chief Strategy Officer)inDonald Isaacman(Director)Nancy Disman(Director)
Valinor Discovery generates patient-derived datasets combining multi-omics and clinical data to enable machine learning applications in drug development.
AI & Machine LearningBiotechMedical Devices
Co-investorsCampus Founders FundHarpoon VenturesMaven 11Mythos Ventures Management, Llc
Valinor is a credit institution building infrastructure for "Open Credit," aiming to connect traditional credit markets with onchain finance.
Crypto & Web3FintechNew York, US
Lily Yarborough(Co-Founder and CBO)inConnor Dougherty(Co-Founder and CEO)in
BoardSean Judge(Director)inNazar Khan(Director)
Co-investorsDepartment of XYZMaven 11Venture Dept.
Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.