Data sources & methodology

We only use official, free sources. Data is end-of-day — we do not offer real-time quotes.

Sources

• Central Bank of Brazil — SGS (time series) and Focus expectations.Source terms of use ↗
• IBGE — SIDRA (inflation, activity).Source terms of use ↗
• CVM — Open Data Portal (company filings and registry).Source terms of use ↗
• Tesouro Transparente — Tesouro Direto prices and rates.Source terms of use ↗
• B3 — public end-of-day files.Source terms of use ↗

Trademarks and data belong to their respective owners. Display follows each source’s terms.

Methodology

1. Automated pipelines fetch data from official sources, keep the raw file and normalize it into time series.
2. Every series records its source, extraction date and license, shown next to charts.
3. Browsers never query the sources directly; all data is served from our database.
4. Financial calculations (Greeks, bond math) are documented and tested against reference values.