Castle Island Ventures

Castle Island Ventures is a venture capital firm based in Boston, Massachusetts, founded in 2018, focused exclusively on public blockchains. Its mission is to support the entrepreneurs building the infrastructure and application companies required to help these transformative protocols reach their full potential. Deliberately positioned as an equity fund rather than a token-focused crypto hedge fund, the firm invests in early-stage companies at the intersection of traditional finance and public blockchains, prioritizing market structure and regulatory clarity within the crypto industry. Its portfolio spans stablecoins and payments, financial market infrastructure, cybersecurity, and DeFi protocols, including Bitwise, TRM Labs, Talos, Hidden Road Partners, Yellow Card, Babylon, and Arcade, with a mix of infrastructure providers and consumer-facing crypto applications across Latin America, Africa, and global institutional markets. The firm's investment approach centers on backing entrepreneurs at the earliest stages who are building durable infrastructure for public blockchain adoption, drawing on its founding team's prior experience at Fidelity's blockchain and cryptoasset research initiatives to guide due diligence and portfolio support.