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Investors / FUSE / Compare with J4 Ventures

FUSE vs J4 Ventures

FUSE lists 52 portfolio companies and has joined 17 funding rounds; J4 Ventures lists 30 companies and has joined 3 rounds. FUSE comes in most often at Series A (59% of its entries), J4 Ventures comes in most often at Seed (100% of its entries). 1 company is on both portfolios, among them Envive AI (fka Spiffy AI) AI ↗︎.

52Portfolio companies30
17Funding rounds joined3
5Rounds led0
10Rounds, last 12 months1
$5M to $20MTypical round it comes in at$1M to $5M
0%Sites no longer answering0%
Show as a table
FUSE and J4 Ventures, head to head
FUSEJ4 Ventures
Portfolio companies5230
Funding rounds joined173
Rounds led50
Rounds, last 12 months101
Typical round it comes in at$5M to $20M$1M to $5M
Sites no longer answering0%0%

Where they come in

share of entries by stage
Pre-seed0%0%
Seed35%100%
Series A59%0%
Series B6%0%
Growth0%0%

FUSEJ4 Ventures

Show as a table
Entry stages of FUSE and J4 Ventures, share of entries
FUSEJ4 Ventures
Pre-seed0%0%
Seed35%100%
Series A59%0%
Series B6%0%
Growth0%0%

Themes

share of checked companies
AI & Machine Learning41%27%
Fintech8%17%
Healthcare & Biotech7%14%
Education0%14%
Cybersecurity11%0%
Human Resources0%8%

FUSEJ4 Ventures

Show as a table
Themes of FUSE and J4 Ventures, share of checked companies
FUSEJ4 Ventures
AI & Machine Learning41%27%
Fintech8%17%
Healthcare & Biotech7%14%
Education0%14%
Cybersecurity11%0%
Human Resources0%8%

Companies both back

1

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

Free account · no card

Compare FUSE and J4 Ventures 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/fuse.vc/portfolio

# also
GET /v1/firms/j4.ventures/portfolio
GET /v1/firms/fuse.vc/coinvestors
The same data as an MCP server for Claude, Cursor and other AI tools. Set up MCP · Docs · Pricing