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Investors / RA Capital / Compare with Third Rock Ventures

RA Capital vs Third Rock Ventures

RA Capital lists 216 portfolio companies and has joined 64 funding rounds; Third Rock Ventures lists 34 companies and has joined 7 rounds. RA Capital comes in most often at Growth (39% of its entries), Third Rock Ventures comes in most often at Growth (43% of its entries). 3 companies are on both portfolios, among them azaleatx.com, Septerna and Terremoto Biosciences.

216Portfolio companies34
64Funding rounds joined7
25Rounds led2
46Rounds, last 12 months3
$100M or moreTypical round it comes in at$100M or more
0%Sites no longer answering0%
Show as a table
RA Capital and Third Rock Ventures, head to head
RA CapitalThird Rock Ventures
Portfolio companies21634
Funding rounds joined647
Rounds led252
Rounds, last 12 months463
Typical round it comes in at$100M or more$100M or more
Sites no longer answering0%0%

Where they come in

share of entries by stage
Pre-seed0%0%
Seed3%0%
Series A34%29%
Series B24%29%
Growth39%43%

RA CapitalThird Rock Ventures

Show as a table
Entry stages of RA Capital and Third Rock Ventures, share of entries
RA CapitalThird Rock Ventures
Pre-seed0%0%
Seed3%0%
Series A34%29%
Series B24%29%
Growth39%43%

Themes

share of checked companies
Healthcare & Biotech86%46%
AI & Machine Learning2%17%
Fintech1%15%
Industrial & Manufacturing4%7%
Consumer0%4%
Real Estate & Construction1%2%

RA CapitalThird Rock Ventures

Show as a table
Themes of RA Capital and Third Rock Ventures, share of checked companies
RA CapitalThird Rock Ventures
Healthcare & Biotech86%46%
AI & Machine Learning2%17%
Fintech1%15%
Industrial & Manufacturing4%7%
Consumer0%4%
Real Estate & Construction1%2%

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 RA Capital 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/racap.com/portfolio

# also
GET /v1/firms/thirdrockventures.com/portfolio
GET /v1/firms/racap.com/coinvestors
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