# PairBook

Startup, Worldwide.

> correlation and holdings overlap for +4,700 US stocks/ETFs
>
> — in its own words, from pairbook.io

- Website: https://www.pairbook.io/
- Listed since: 2026
- launched: 2026-08-26
- launch post: https://news.ycombinator.com/item?id=49450429
- hn score: 4
- domain created: 2026-08-25
- Last verified: 2026-08-26


## Sources

- Hacker News, "Show HN" — https://news.ycombinator.com/item?id=49450429, read 2026-08-26

---
startup.is · https://startup.is/registry/pairbook · open data: /api/v1, /llms.txt