Our signal sources
Cluster.vc aggregates startup signals from 8 independent sources. Here's exactly where the data comes from.
Product launches and announcements from Product Hunt's daily feed.
Fields captured
Front-page startup launches and Show HN posts from Hacker News.
Fields captured
Form D filings from the U.S. Securities and Exchange Commission. These filings indicate private fundraising activity — often the earliest public signal of a funding round.
Fields captured
Seed, Series A, and later-stage funding announcements aggregated from startup and European tech directories.
Fields captured
Companies accepted into Y Combinator accelerator cohorts, tracked from public batch data.
Fields captured
Aftermarket domain name sales from major auction platforms. A unique signal — when a startup acquires a premium domain, it often indicates funding, rebranding, or growth.
Fields captured
Fresh domain registrations on tracked domains. When a company registers a new domain, it can signal a rebrand, product launch, or new venture.
Fields captured
Data freshness
| Source | Update Frequency | Coverage |
|---|---|---|
| Product Hunt | Daily | All featured products |
| Hacker News | Every 6 hours | Front page + Show HN |
| SEC EDGAR | Daily | Form D filings |
| Funding Directories | Daily | Seed through Series C |
| Tech.eu | Daily | European tech funding |
| Y Combinator | Per batch cycle | All accepted companies |
| Domain Aftermarket | Daily | Aftermarket sales > $1k |
| Domain Registration | Hourly | Fresh registrations on tracked domains |
How signal correlation works
The same company can appear as "Acme Corp" on Product Hunt, "Acme Corporation" on an SEC filing, and "acme.ai" in a domain sale. Most tools treat these as three different companies.
Cluster.vc resolves entities across sources by matching company names, domains, and other identifiers. When we find a match, all signals are linked to a single company profile.
This is why you can see that a company launched on Hacker News, filed a Form D two weeks later, and bought a premium domain — all on the same company card. No manual tracking required.