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Investors / Fifty Years / Compare with Manta Ray

Fifty Years vs Manta Ray

Fifty Years lists 77 portfolio companies and has joined 10 funding rounds; Manta Ray lists 55 companies and has joined 7 rounds. Fifty Years comes in most often at Seed (50% of its entries), Manta Ray comes in most often at Seed (43% of its entries). 3 companies are on both portfolios, among them Astranis, Cover and Deepcell.

77Portfolio companies55
10Funding rounds joined7
1Rounds led0
5Rounds, last 12 months4
$20M to $100MTypical round it comes in at$5M to $20M
0%Sites no longer answering0%
Show as a table
Fifty Years and Manta Ray, head to head
Fifty YearsManta Ray
Portfolio companies7755
Funding rounds joined107
Rounds led10
Rounds, last 12 months54
Typical round it comes in at$20M to $100M$5M to $20M
Sites no longer answering0%0%

Where they come in

share of entries by stage
Pre-seed0%0%
Seed50%43%
Series A20%29%
Series B30%29%
Growth0%0%

Fifty YearsManta Ray

Show as a table
Entry stages of Fifty Years and Manta Ray, share of entries
Fifty YearsManta Ray
Pre-seed0%0%
Seed50%43%
Series A20%29%
Series B30%29%
Growth0%0%

Themes

share of checked companies
Healthcare & Biotech40%25%
AI & Machine Learning12%19%
Enterprise Software0%11%
Education10%0%
Industrial & Manufacturing10%4%
Real Estate & Construction2%8%

Fifty YearsManta Ray

Show as a table
Themes of Fifty Years and Manta Ray, share of checked companies
Fifty YearsManta Ray
Healthcare & Biotech40%25%
AI & Machine Learning12%19%
Enterprise Software0%11%
Education10%0%
Industrial & Manufacturing10%4%
Real Estate & Construction2%8%

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 Fifty Years and Manta Ray 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/fiftyyears.com/portfolio

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