About

About Dados B3

Dados B3 is an API and site of auditable fundamental data for the Brazilian stock market — public methodology, invariant tests and point-in-time multiples.

Who runs it

Operated by Lemon Tech (legal name RENATA ESTRELA SILVA GUIMARÃES SERVIÇOS DE TI), CNPJ 47.918.130/0001-71, based in Campina Grande — PB, Brazil.

Independent project

Dados B3 is independent and not affiliated with B3 (the exchange) nor with the CVM (the regulator). It processes their public data — it is not an official service of either. “B3” is used descriptively, to name the market the data refers to.

Sources

Financial statements from CVM open data (ODbL license) and prices from B3’s end-of-day COTAHIST file (free distribution). How every number is built is public at /metodologia, and how we verify it at /transparencia.

Contact

Questions, corrections or partnerships: valthguime@gmail.com. Subscribers manage their plan at /portal.