Nic Carter is the Founding Partner at Castle Island Ventures, a venture capital firm focused exclusively on public blockchains, which he co-founded. He also co-founded Coin Metrics, a crypto financial intelligence and blockchain data company, in 2017 as an open-source project. Nic Carter's Twitter Score is 899 out of 1000 (an Excellent rating) as of July 2026, placing him at rank #38 (top 0.1%) out of 389,587 accounts tracked, and among the 36 accounts that score above 900.
Nic Carter previously worked at Fidelity Investments as their first cryptoasset analyst, devising research perspectives on public blockchains before co-founding Castle Island Ventures. The firm's second fund closed at $50 million on February 8, 2021, and its third fund was announced at $250 million on February 16, 2021. Coin Metrics was acquired by Talos in July 2025. Nic Carter has published policy guidance on proof-of-reserves attestations for crypto exchanges.
Nic Carter co-hosts the On The Brink with Castle Island podcast with Matt Walsh, a show that reached 735 episodes and publishes semiweekly. He also publishes the Murmurations II Substack newsletter, covering stablecoins, fintech, and startups. Nic Carter's account has 610,772 followers as of July 2026 and 77,222 posts on record. He has been mentioned by 1,758 accounts, with 6,157 total mentions across the platform.
Who follows Nic Carter on X?
Nic Carter draws a broad audience across crypto and venture. The accounts that follow Nic Carter include 2,963 founders, 694 angel investors, 1,590 influencers and 122 VCs, among them Balaji, Marc Andreessen, Solana, Laura Shin, Toly and Cobie.