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Castle Island Ventures

North America, Massachusetts, United States, Cambridge

Description

Castle Island Ventures is a venture capital firm,

Investor Profile

Castle Island Ventures has made 98 investments, with 16 in the past 12 months and 30% as lead.

Stage Focus

  • Seed (51%)
  • Series A (22%)
  • Series B (8%)
  • Pre Seed (7%)
  • Series Unknown (5%)
  • Series C (4%)
  • Series D (2%)

Country Focus

  • United States (82%)
  • United Kingdom (2%)
  • Canada (2%)
  • India (2%)
  • Indonesia (2%)
  • Malaysia (1%)
  • Cayman Islands (1%)
  • France (1%)
  • Israel (1%)
  • China (1%)

Industry Focus

  • Blockchain
  • Cryptocurrency
  • Fintech
  • Financial Services
  • Bitcoin
  • Software
  • Information Technology
  • Web3
  • Trading Platform
  • Analytics
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FAQ

Frequently Asked Questions

Learn who this investor regularly partners with—both firms and angels—and explore their latest activity.

Who does Castle Island Ventures frequently co-invest with?

Notation Capital
North America, New York, United States, Brooklyn
Co-Investments: 6
CMT Digital Ventures
North America, Illinois, United States, Chicago
Co-Investments: 10
Third Prime
North America, New York, United States, New York
Co-Investments: 6
CMS Holdings
North America, New York, United States, New York
Co-Investments: 6
Coinbase Ventures
North America, California, United States, Oakland
Co-Investments: 16
Digital Currency Group
North America, Connecticut, United States, Stamford
Co-Investments: 7
AV
North America, Massachusetts, United States, Boston
Co-Investments: 10
Dragonfly
North America, California, United States, San Francisco
Co-Investments: 5
Highland Capital Partners
North America, Massachusetts, United States, Lexington
Co-Investments: 5
Polychain
North America, California, United States, San Francisco
Co-Investments: 9

Which angels does Castle Island Ventures often collaborate with?

EL
North America, Florida, United States, Miami Beach
Shared Deals: 2
Balaji Srinivasan
Asia, Central Region, Singapore, Singapore
Shared Deals: 4
JY
North America, New York, United States, New York
Shared Deals: 2
JC
North America, California, United States, Los Angeles
Shared Deals: 2
Dave Balter
North America, Massachusetts, United States, Boston
Shared Deals: 2
PT
North America, New York, United States, New York
Shared Deals: 2
Dan Nova
North America, Massachusetts, United States, Cambridge
Shared Deals: 2
NR
North America, California, United States, San Francisco
Shared Deals: 3
AP
North America, Texas, United States, Austin
Shared Deals: 1
AD
North America, New York, United States, New York
Shared Deals: 1

What are some of recent deals done by Castle Island Ventures?

Beam is a payment service that uses stablecoins to help people send money globally faster and cheaper.

CryptocurrencyFinTechPayments
Series UnknownMay 27, 2025
Amount Raised: $7,000,000
OpenFX

New City, New York, United States

Real-time FX Payments Infrastructure

Embedded SoftwareEmbedded SystemsFinanceFinancial ExchangesFinancial ServicesForeign Exchange TradingTrading PlatformTransaction Processing
Series UnknownMay 22, 2025
Amount Raised: $23,000,000
Nirvana Labs

Los Angeles, California, United States

Nirvana Labs offers cloud solutions designed for blockchain infrastructure and services.

BlockchainEthereumIaaSPaaSSoftware
SeedMay 12, 2025
Amount Raised: $6,000,000
Félix

San Francisco, California, United States

Félix is ​​a chat-based platform that enables Latinos in the US to send money abroad.

Artificial Intelligence (AI)BlockchainFinTechNatural Language ProcessingPayments
Series BApr 3, 2025
Amount Raised: $75,000,000
Surus

Asheville, North Carolina, United States

Surus is a platform for the future of finance, built on top of our licensed and regulated financial institution.

Financial Services
SeedFeb 13, 2025
Amount Raised: $8,000,000
Coala Pay

San Francisco, California, United States

Coala Pay is building better contracting and payments infrastructure for the aid sector.

Financial ServicesSocial Impact
SeedFeb 7, 2025
Amount Raised: $3,500,000
Alpen Labs

New York, New York, United States

Alpen Labs is a startup scaling bitcoin with zero-knowledge technology.

Information TechnologyInternet
Series UnknownJan 13, 2025
Amount Raised: $8,500,000
CAT Labs

Miami, Florida, United States

CAT Labs is working on cybersecurity and digital asset recovery solutions.

ComputerNetwork Security
SeedDec 4, 2024
Amount Raised: $5,400,000
Hata

Kuala Lumpur, Kuala Lumpur, Malaysia

Digital Asset Broker, Exchange and Custody

BlockchainCryptocurrencySoftware
SeedOct 21, 2024
Amount Raised: $4,193,548
Yellow Card

Atlanta, Georgia, United States

Yellow Card is the largest and first licensed Stablecoin on/off ramp on the African continent

BitcoinCryptocurrencyFinTechTrading PlatformVirtual Currency
Series COct 16, 2024
Amount Raised: $33,000,000