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Investors / Castle Island Ventures / Compare with ParaFi Capital

Castle Island Ventures vs ParaFi Capital

Castle Island Ventures lists 25 portfolio companies and has joined 15 funding rounds; ParaFi Capital lists 98 companies and has joined 15 rounds. Castle Island Ventures comes in most often at Seed (50% of its entries), ParaFi Capital comes in most often at Seed (54% of its entries). 3 companies are on both portfolios, among them Andrena, Birch Hill and Bitwise.

25Portfolio companies98
15Funding rounds joined15
7Rounds led3
10Rounds, last 12 months9
$5M to $20MTypical round it comes in at$5M to $20M
0%Sites no longer answering0%
Show as a table
Castle Island Ventures and ParaFi Capital, head to head
Castle Island VenturesParaFi Capital
Portfolio companies2598
Funding rounds joined1515
Rounds led73
Rounds, last 12 months109
Typical round it comes in at$5M to $20M$5M to $20M
Sites no longer answering0%0%

Where they come in

share of entries by stage
Pre-seed0%0%
Seed50%54%
Series A42%23%
Series B8%8%
Growth0%15%

Castle Island VenturesParaFi Capital

Show as a table
Entry stages of Castle Island Ventures and ParaFi Capital, share of entries
Castle Island VenturesParaFi Capital
Pre-seed0%0%
Seed50%54%
Series A42%23%
Series B8%8%
Growth0%15%

Themes

share of checked companies
Fintech58%54%
Crypto & Web311%20%
Cybersecurity11%4%
Real Estate & Construction5%0%
Legal & Compliance5%2%
AI & Machine Learning3%4%

Castle Island VenturesParaFi Capital

Show as a table
Themes of Castle Island Ventures and ParaFi Capital, share of checked companies
Castle Island VenturesParaFi Capital
Fintech58%54%
Crypto & Web311%20%
Cybersecurity11%4%
Real Estate & Construction5%0%
Legal & Compliance5%2%
AI & Machine Learning3%4%

Companies both back

3

Shared companies are those both firms' own portfolio pages list, each checked against the company's site. The same comparison through the API is POST /v1/overlap, for up to 20 firms. How the data is graded

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Compare Castle Island Ventures and ParaFi Capital as data

Pull both portfolios and every co-investor through one API key or MCP, and lay up to 20 firms side by side with POST /v1/overlap. A free account adds Ask AI searches and alerts when either firm adds a company.

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  • Ask AI5 plain-English investor searches a day
  • Full listsEvery portfolio row and two-firm overlap
  • API and MCP100 REST or MCP calls a month, one key
  • AlertsFollow 5 investors for portfolio and fund changes
VCinfo API
$ curl -H "X-API-Key: YOUR_KEY" \
  https://api.vcinfo.io/v1/firms/castleisland.vc/portfolio

# also
GET /v1/firms/parafi.com/portfolio
GET /v1/firms/castleisland.vc/coinvestors
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