Castle Island Ventures

How to contact Castle Island Ventures
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Early-stage investor (writes $250k–$1M checks) focused on equity-only Bitcoin and public-blockchain companies, differentiated by ex-Fidelity expertise and research, podcast, and stablecoin reports connecting founders to banks and ETF issuers.
Stages they invest in
N/A
Avg Check size
$100K - $5M
N/A
Can They Lead?
Yes
N/A
Location
Cambridge
N/A
Geographies They Invest in
USA
N/A
Castle Island Ventures
Sectors
Web3 / Crypto
Fintech
Devtools
Data
Cybersecurity
N/A
Avg Check
$100K - $5M
N/A
Leads?
Yes
N/A
Close X
Industries
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What Makes them Unique

Castle Island Ventures is a venture capital fund founded by former Fidelity executives who helped build the asset manager's early crypto efforts before spinning out to focus exclusively on equity investments in companies building on public blockchains like Bitcoin, deliberately avoiding token trading to minimize regulatory risk. The firm operates as both an early-stage investor writing $250k-$1m checks and a research hub through their podcast and stablecoin reports, positioning themselves as a bridge between crypto builders and large financial institutions like banks and ETF issuers.

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