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Investors / Extension Fund / Compare with Notion Capital

Extension Fund vs Notion Capital

Extension Fund lists 22 portfolio companies and has joined 1 funding round; Notion Capital lists 99 companies and has joined 32 rounds. Extension Fund comes in most often at Seed (100% of its entries), Notion Capital comes in most often at Seed (40% of its entries). 1 company is on both portfolios, among them Internxt.

22Portfolio companies99
1Funding rounds joined32
0Rounds led9
0Rounds, last 12 months15
$1M to $5MTypical round it comes in at$20M to $100M
0%Sites no longer answering0%
Show as a table
Extension Fund and Notion Capital, head to head
Extension FundNotion Capital
Portfolio companies2299
Funding rounds joined132
Rounds led09
Rounds, last 12 months015
Typical round it comes in at$1M to $5M$20M to $100M
Sites no longer answering0%0%

Where they come in

share of entries by stage
Pre-seed0%7%
Seed100%40%
Series A0%33%
Series B0%13%
Growth0%7%

Extension FundNotion Capital

Show as a table
Entry stages of Extension Fund and Notion Capital, share of entries
Extension FundNotion Capital
Pre-seed0%7%
Seed100%40%
Series A0%33%
Series B0%13%
Growth0%7%

Themes

share of checked companies
Fintech29%19%
AI & Machine Learning10%22%
Healthcare & Biotech13%7%
Cybersecurity7%10%
Enterprise Software0%9%
E-commerce & Marketplaces7%7%

Extension FundNotion Capital

Show as a table
Themes of Extension Fund and Notion Capital, share of checked companies
Extension FundNotion Capital
Fintech29%19%
AI & Machine Learning10%22%
Healthcare & Biotech13%7%
Cybersecurity7%10%
Enterprise Software0%9%
E-commerce & Marketplaces7%7%

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

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Compare Extension Fund and Notion 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/extensionfund.com/portfolio

# also
GET /v1/firms/notioncapital.com/portfolio
GET /v1/firms/extensionfund.com/coinvestors
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