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Investors / byFounders / Compare with Grey Silo Ventures

byFounders vs Grey Silo Ventures

byFounders lists 58 portfolio companies and has joined 25 funding rounds; Grey Silo Ventures lists 11 companies and has joined 5 rounds. byFounders comes in most often at Seed (55% of its entries), Grey Silo Ventures comes in most often at Seed (60% of its entries). 1 company is on both portfolios, among them Arsenale Bioyards.

58Portfolio companies11
25Funding rounds joined5
12Rounds led0
14Rounds, last 12 months3
$1M to $5MTypical round it comes in at$5M to $20M
0%Sites no longer answering0%
Show as a table
byFounders and Grey Silo Ventures, head to head
byFoundersGrey Silo Ventures
Portfolio companies5811
Funding rounds joined255
Rounds led120
Rounds, last 12 months143
Typical round it comes in at$1M to $5M$5M to $20M
Sites no longer answering0%0%

Where they come in

share of entries by stage
Pre-seed20%20%
Seed55%60%
Series A20%0%
Series B5%20%
Growth0%0%

byFoundersGrey Silo Ventures

Show as a table
Entry stages of byFounders and Grey Silo Ventures, share of entries
byFoundersGrey Silo Ventures
Pre-seed20%20%
Seed55%60%
Series A20%0%
Series B5%20%
Growth0%0%

Themes

share of checked companies
AI & Machine Learning20%56%
Food & Agriculture0%31%
Fintech9%0%
Healthcare & Biotech9%6%
E-commerce & Marketplaces8%0%
Industrial & Manufacturing7%6%

byFoundersGrey Silo Ventures

Show as a table
Themes of byFounders and Grey Silo Ventures, share of checked companies
byFoundersGrey Silo Ventures
AI & Machine Learning20%56%
Food & Agriculture0%31%
Fintech9%0%
Healthcare & Biotech9%6%
E-commerce & Marketplaces8%0%
Industrial & Manufacturing7%6%

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 byFounders and Grey Silo 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/byfounders.vc/portfolio

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