Dados B3 › For companies

Dados B3 for companies

The Business plan delivers the fundamentals of 356 Brazilian listed companies through an API, a CSV export and a connector for AI, with the CVM account behind every figure. Ask for the 14-day trial

Who it is for

• Fintechs that show fundamentals inside an app or a platform.
• Research and analysis houses that need to cite the source of each figure.
• Whoever runs backtests or robots and needs the price a trader could have paid.
• Whoever builds an AI app and wants the model to read audited figures instead of guessing.

What you get, and where to check it

• Every figure has its CVM account. The page of each company goes down to the line of the CVM file. Example: WEGE3.
• Price of each date without look-ahead. The P/E uses the close of the first trading session after the statement became public at the CVM, not the price of the fiscal year end. Method.
• Old versions of republished statements, from 2010. 8,656 restatements recorded, each with the two values side by side, never corrected in silence. See them.
• Banks and insurers handled apart. Their statements follow another layout, and the indicators are computed for it. Method for banks.
• Tests before every update. 762 tests, listed one by one, must pass before a new base goes on air. The list.
• Connector for AI. An MCP server with 25 tools, for Claude, ChatGPT and Cursor. Connection guide.

Plans

• 25% off the first year for analysis platforms.
• Custom: by proposal, for volume, redistribution or terms outside the two plans.
• Payment in advance. Prices in Brazilian reais.

For the Business plan, we sign a contract with the company's CNPJ (Brazilian company tax ID).

Ready-made examples

Same key, three ways in. The routes are the ones in the API documentation.

Python

import requests

r = requests.get(
    "https://dadosb3.com/empresas/PETR4/multiplos",
    headers={"X-API-Key": "SUA_CHAVE"},
    params={"as_of": "2023-04-01"},
)
print(r.json())

Excel / Power Query

Data > Get Data > From Other Sources > Blank Query, then paste:

let
    Fonte = Web.Contents("https://dadosb3.com/dump/multiplos.csv",
        [Headers = [#"X-API-Key" = "SUA_CHAVE"]]),
    Tabela = Csv.Document(Fonte, [Delimiter = ",", Encoding = 65001]),
    Promovida = Table.PromoteHeaders(Tabela)
in
    Promovida

curl

curl -H "X-API-Key: SUA_CHAVE" \
  "https://dadosb3.com/empresas/WEGE3/fatos?as_of=2023-04-01"

The Excel example reads the full multiples export (/dump/multiplos.csv); it needs a paid-plan key.

Questions

Is there an SLA?

The plans above carry no availability SLA. If you need one, ask for the custom proposal. Coverage and the last update are public, live, at https://dadosb3.com/saude.

How often is the data updated?

Prices: every night, after B3 publishes its daily file (about 9 pm Brasília time). Financial statements, registry and distributions: in the weekly rebuild, on Sunday. Nothing replaces good data with bad: if a check fails, the base on air stays.

Is it real-time?

No. Prices are end-of-day. For intraday quotes use a quote API.

Where does the data come from?

Financial statements: CVM open data (ODbL licence). Prices: B3 COTAHIST file. Every figure carries the CVM account it came from.

Can I run a complete backtest on it?

Partly. The multiples remove the look-ahead between statement and price. The universe is NOT survivorship-free: companies that left the exchange are not in the base, and there is no historical index composition. The page https://dadosb3.com/saiu-da-bolsa measures how big that gap is.

How do I get a key?

Ask for the 14-day trial in the form on this page. We answer within 1 business day and send the key by e-mail. For the Business plan, we sign a contract with the company's CNPJ.

Ask for the 14-day free trial

We answer within 1 business day and send the key by hand. The trial does not renew by itself and asks for no card.

What we keep from this form and why: privacy policy. Who the service is for · comparison.

Numbers on this page are live. Data version 2026-10-18-pl-classe-versoes · page generated 2026-10-22 19:04 UTC. If this does not match /saude, you are reading a cached copy.