/

Investors / Atlas Venture / Compare with Heartfelt

Atlas Venture vs Heartfelt

Atlas Venture lists 52 portfolio companies and has joined 11 funding rounds; Heartfelt lists 138 companies and has joined 24 rounds. Atlas Venture comes in most often at Series B (73% of its entries), Heartfelt comes in most often at Seed (77% of its entries). 1 company is on both portfolios, among them floxmind.com.

52Portfolio companies138
11Funding rounds joined24
1Rounds led2
6Rounds, last 12 months14
$100M or moreTypical round it comes in at$1M to $5M
0%Sites no longer answering0%
Show as a table
Atlas Venture and Heartfelt, head to head
Atlas VentureHeartfelt
Portfolio companies52138
Funding rounds joined1124
Rounds led12
Rounds, last 12 months614
Typical round it comes in at$100M or more$1M to $5M
Sites no longer answering0%0%

Where they come in

share of entries by stage
Pre-seed0%14%
Seed9%77%
Series A9%9%
Series B73%0%
Growth9%0%

Atlas VentureHeartfelt

Show as a table
Entry stages of Atlas Venture and Heartfelt, share of entries
Atlas VentureHeartfelt
Pre-seed0%14%
Seed9%77%
Series A9%9%
Series B73%0%
Growth9%0%

Themes

share of checked companies
Healthcare & Biotech93%11%
AI & Machine Learning2%21%
Fintech0%11%
Industrial & Manufacturing2%9%
Enterprise Software0%9%
E-commerce & Marketplaces0%8%

Atlas VentureHeartfelt

Show as a table
Themes of Atlas Venture and Heartfelt, share of checked companies
Atlas VentureHeartfelt
Healthcare & Biotech93%11%
AI & Machine Learning2%21%
Fintech0%11%
Industrial & Manufacturing2%9%
Enterprise Software0%9%
E-commerce & Marketplaces0%8%

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

Free account · no card

Compare Atlas Venture and Heartfelt 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.

Work email, sign-in link by email. Already have an account? Log in
  • 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/atlasventure.com/portfolio

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