Investor actively backing innovative startups and growth-stage companies across various industries and funding rounds.
Verified emails & LinkedIn for founders across this portfolio.
A decentralized social media network for unbiased and open discourse, resistant to takedowns and censorship.
Stable is a blockchain for digital dollar settlement with gas-free peer transfers.
Gondor is a DeFi startup that builds tools to make prediction markets more efficient.
SatLayer is the economic layer for Bitcoin, making the best asset now fully programmable.
Pear Protocol is a decentralised Pairs Trading Exchange.
Eterneva is a developer of diamond technology intended to convert cremated ashes of loved ones into memorial diamonds.
Notabene is the leading institutional transaction and payment messaging network for compliant stablecoin payments and crypto transactions
Halborn is a cybersecurity company protecting blockchain organizations from cyber attacks.
Cyclops.io is a new operating system for team collaboration.
Mash is a artificial intelligence company that provides knowledge Agents for Technical B2B Revenue and GTM teams.
Groma is launching GromaCoin, an on-chain asset backed by real estate.
Try Your Best is a blockchain technology company.
Attestiv is an AI software platform that verifies the authenticity of digital media and data for businesses.
ZenLedger analyzes and simplifies cryptocurrency taxes to help investors and tax professionals in portfolio management.
Trade NFTs on Flow. Search for trading partners, swap NFTs, and shop across marketplaces.
EasyBins is an online retail platform used to offer free grocery delivery.
Eaglebrook Advisors is a crypto-focused investment firm.
SoundMint is a Web3 & Music incubator.
Ellis is a modern immigration law firm for startups and growing companies.
Socket Supply creates tools that help developers deploy to the cloud and beyond.
Valinor is a digital investment firm that offers flexible financial capital for fintech companies.
Birch Hill Holdings provides institutional digital asset infrastructure for onchain lending and tokenized asset markets.
Build on Bitcoin is a hybrid Layer-2 network Bitcoin blockchain
Beam is a payment service that uses stablecoins to help people send money globally faster and cheaper.
Castle Island Ventures has invested in 106 companies tracked in our database. The portfolio spans multiple industries and funding stages, from seed-stage startups to late-stage companies.
Castle Island Ventures's top investment sectors include Blockchain, Cryptocurrency, FinTech, Financial Services, Decentralized Finance (DeFi). The firm invests across 49 different industry categories.
Among tracked funding rounds, Halborn received $90.0M in a Series A round. Castle Island Ventures's total known invested capital is $997.4M.
Castle Island Ventures's average investment size is $12.8M across its portfolio of 106 companies.
Recent Castle Island Ventures portfolio additions include Capsule Social, Stable, Gondor, SatLayer, Pear Protocol. These companies were founded in 2020 or later.