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Investors / Molten Ventures / Compare with Third Rock Ventures

Molten Ventures vs Third Rock Ventures

Molten Ventures lists 65 portfolio companies and has joined 13 funding rounds; Third Rock Ventures lists 34 companies and has joined 7 rounds. Molten Ventures comes in most often at Series A (33% of its entries), Third Rock Ventures comes in most often at Growth (43% of its entries). 2 companies are on both portfolios, among them Decibel and Pliant.

65Portfolio companies34
13Funding rounds joined7
7Rounds led2
11Rounds, last 12 months3
$20M to $100MTypical round it comes in at$100M or more
0%Sites no longer answering0%
Show as a table
Molten Ventures and Third Rock Ventures, head to head
Molten VenturesThird Rock Ventures
Portfolio companies6534
Funding rounds joined137
Rounds led72
Rounds, last 12 months113
Typical round it comes in at$20M to $100M$100M or more
Sites no longer answering0%0%

Where they come in

share of entries by stage
Pre-seed0%0%
Seed0%0%
Series A33%29%
Series B33%29%
Growth33%43%

Molten VenturesThird Rock Ventures

Show as a table
Entry stages of Molten Ventures and Third Rock Ventures, share of entries
Molten VenturesThird Rock Ventures
Pre-seed0%0%
Seed0%0%
Series A33%29%
Series B33%29%
Growth33%43%

Themes

share of checked companies
Healthcare & Biotech13%46%
AI & Machine Learning25%17%
Fintech15%15%
Enterprise Software7%0%
E-commerce & Marketplaces7%2%
Industrial & Manufacturing6%7%

Molten VenturesThird Rock Ventures

Show as a table
Themes of Molten Ventures and Third Rock Ventures, share of checked companies
Molten VenturesThird Rock Ventures
Healthcare & Biotech13%46%
AI & Machine Learning25%17%
Fintech15%15%
Enterprise Software7%0%
E-commerce & Marketplaces7%2%
Industrial & Manufacturing6%7%

Companies both back

2

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 Molten Ventures and Third Rock 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/moltenventures.com/portfolio

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