# Jack Dorsey, Square and Twitter co-founder (slim)

> Jack Dorsey, Square and Twitter co-founder's investments in AI tools on Anchor Terminal, Lightning Labs, with each listing's grade and the founders behind it.

- Full: https://www.anchorterminal.com/investors/jack-dorsey-square-and-twitter-co-founder/index.md (~500 tokens) · this version ~380 tokens · JSON https://www.anchorterminal.com/investors/jack-dorsey-square-and-twitter-co-founder/index.json · canonical https://www.anchorterminal.com/investors/jack-dorsey-square-and-twitter-co-founder/
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-28
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Angel investor.

## Companies on Anchor Terminal

- **Lightning Labs**, Seed, March 2018
  - [L402](https://www.anchorterminal.com/tools/l402.md), graded C, 60.8/100
  - Source: https://techcrunch.com/2018/03/15/lightning-labs-just-raised-millions-from-jack-dorsey-and-others-to-supercharge-blockchain-transactions/

## Where they invest

- Pay-per-call protocols, 1

## Founders they backed

- [Elizabeth Stark](https://www.anchorterminal.com/people/elizabeth-stark/), Lightning Labs
- [Olaoluwa Osuntokun](https://www.anchorterminal.com/people/olaoluwa-osuntokun/), Lightning Labs

## Questions

### Which AI tools has Jack Dorsey, Square and Twitter co-founder invested in?

Anchor Terminal lists Lightning Labs backed by Jack Dorsey, Square and Twitter co-founder.

### How are Jack Dorsey, Square and Twitter co-founder's companies graded?

On Anchor Terminal's benchmark, L402 (C, 60.8).

Investors are named from the companies' own announcements, the investors' own pages, Y Combinator's company pages, public filings and news reports of a round, each with its source.