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Investors / Mizuho Capital / Compare with Saisei Ventures

Mizuho Capital vs Saisei Ventures

Mizuho Capital lists 24 portfolio companies and has joined 27 funding rounds; Saisei Ventures lists 5 companies and has joined 0 rounds. Mizuho Capital comes in most often at Series A (42% of its entries). 1 company is on both portfolios, among them United Immunity.

24Portfolio companies5
27Funding rounds joined0
0Rounds led0
18Rounds, last 12 months0
$5M to $20MTypical round it comes in atn/a
0%Sites no longer answering0%
Show as a table
Mizuho Capital and Saisei Ventures, head to head
Mizuho CapitalSaisei Ventures
Portfolio companies245
Funding rounds joined270
Rounds led00
Rounds, last 12 months180
Typical round it comes in at$5M to $20Mn/a
Sites no longer answering0%0%

Where they come in

share of entries by stage
Pre-seed0%0%
Seed25%0%
Series A42%0%
Series B21%0%
Growth13%0%

Mizuho CapitalSaisei Ventures

Show as a table
Entry stages of Mizuho Capital and Saisei Ventures, share of entries
Mizuho CapitalSaisei Ventures
Pre-seed0%0%
Seed25%0%
Series A42%0%
Series B21%0%
Growth13%0%

Themes

share of checked companies
Healthcare & Biotech10%100%
AI & Machine Learning22%0%
Industrial & Manufacturing12%0%
Enterprise Software12%0%
Space & Defense10%0%
E-commerce & Marketplaces7%0%

Mizuho CapitalSaisei Ventures

Show as a table
Themes of Mizuho Capital and Saisei Ventures, share of checked companies
Mizuho CapitalSaisei Ventures
Healthcare & Biotech10%100%
AI & Machine Learning22%0%
Industrial & Manufacturing12%0%
Enterprise Software12%0%
Space & Defense10%0%
E-commerce & Marketplaces7%0%

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 Mizuho Capital and Saisei 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/mizuho-vc.co.jp/portfolio

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