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Transparency
Transparency — how you check the numbers yourself
Data version 2026-11-09-ancora-do-fre · page generated 2026-11-12 08:09 UTC. If these do not match /saude, you are reading a cached copy.
What is checked, before every publication — 1298 automated tests, collected live
8 are DATA invariants (does the number tie out?) and 131 are product tests — access gate, navigation, language, AI connector. Calling all 1298 'invariants' would be inflating it: the split is checkable in the list itself. Not a hand-picked highlight reel: every test below was found by introspecting the actual test files just now, the same way pytest --collect-only would. Grouped by what it protects against, not by which file it lives in.
Level 1 — Integrity: does the data tie out? (6)
FD01— The CVM daily fund report becomes one row per fund and month: unit value, net assets and unitholders of the last reported day and the monthly sum of inflows and redemptions; when the class row exists the subclasses are ignored, with subclasses only net assets and flows add up and the unit value is blank for two or more; malformed tax IDs are dropped, the old CNPJ_FUNDO layout is accepted and a file without a checked column is refused.FD02— The fund collection covers the 13 months ending in the current one; the 3 newest are downloaded on every build and older ones only without the aggregate on disk; an unavailable month neither crashes nor erases; the zip is deleted after reading; months leaving the window are dropped; the register gives the class name with accents, the manager through the parent fund and the name of funds not yet adapted, and a register outage keeps the stored names.FD05— The /fundos/informe route returns the three rankings of the reference month with the CVM dataset page, the ODbL licence and a citation, the series of one fund by tax ID, a name search and a CSV with a fixed header; bad parameters return 400, an unknown fund 404, and without the table the plain address returns 200 with a notice and the filtered one 503 with Retry-After.FD06— The /fundos page in Portuguese and English shows the reference month, the three rankings linking to each fund, the warning that net assets are not added up, the JSON and CSV links, source, licence and citation with no script; search results are noindex; each fund page shows the register and the month-by-month table; an unknown fund is 404; without the table both pages are a noindex notice with no number, never an error.FD07— The health route has the funds block with an alarm after 21 days, the sitemap announces /fundos with the last reported day never in the future, llms.txt cites the page and the route, the API hub has the route card, the footer of every page links to /fundos, the Portuguese and English methodology pages cite the source and licence, and the FD family exists.FD08— The MCP tool fundos_investimento calls the same route: rankings with source and licence with no argument, the series with a tax ID and a name search; a bad request comes back as an error field, never an exception.
Level 2 — Semantics: does the account mean what the calculation assumes? (2)
FD03— The reference month of the fund rankings is the newest closed month with at least 85 percent of the funds of the fullest month, never the partial current month; the rankings order by net assets, largest net inflow and largest net outflow, and the net inflow is inflows minus redemptions.FD04— The series of one fund runs from the oldest to the newest month with the monthly unit change only between consecutive months that have a unit value; a fund with several subclasses has no change; the search finds a name without accents or case and a fund by the start of its tax ID, largest net assets first.
Level 3 — Economic: is the result possible in the real world? (0)
Other product tests (0)
Access gate, navigation and the MCP connector — they test whether the product works, not whether a number is right, so they don't fit the 3 levels above by design. Still counted, still listed:
Reconstruct it yourself — net margin across 5 companies, 4 sectors
We don't ask you to trust the numbers. Here's the net margin of five companies in four different sectors, each rebuilt straight from its annual report (DFP) at the CVM — net income ÷ revenue, matching the published figure exactly. For ANY indicator, of any company, the whole chain down to the line in CVM's file is at /linhagem:
| Company · sector | Net income (CVM acct) | Revenue (CVM acct) | Margin =÷ |
|---|---|---|---|
| WEGE3 · industrial | R$ 6.78 bn DRE:3.11 | R$ 40.80 bn DRE:3.01 | 16.6% |
| VALE3 · mining | R$ 11.81 bn DRE:3.11 | R$ 213.59 bn DRE:3.01 | 5.5% |
| PETR4 · oil & gas | R$ 110.61 bn DRE:3.11 | R$ 497.55 bn DRE:3.01 | 22.2% |
| ITUB4 · bank | R$ 45.85 bn DRE:3.09 | R$ 387.12 bn DRE:3.01 | 11.8% |
| BBAS3 · bank | R$ 16.78 bn DRE:3.11 | R$ 319.46 bn DRE:3.01 | 5.3% |
Download any of these DFPs from the CVM, take the income and revenue accounts, divide — you get the same number. Banks use interest income as revenue (what makes sense for a bank), so the reconciliation is sector-aware; the others use sales revenue. Figures are the latest fiscal year.
Why we may differ from another site (and it's not an error)
A difference between two sites usually isn't one being wrong — it's a method choice. We disclose ours:
- Average vs ending capital: ROE and ROIC use average equity/capital (this year + last ÷ 2), not the ending balance — so they're not a naive single-year division.
- Controlling vs consolidated: we state which one each item uses.
- TTM vs annual: quarterly multiples use trailing-twelve-months earnings.
- IFRS 16, goodwill, cash, exceptional tax: each handled explicitly and flagged when it distorts.
Do the tests bite? Yes — real cases the suite has caught
A test that never fails could mean perfect data — or a weak test. These were born from real errors that slipped through, and now fail — only shown for tests that actually exist in the collected suite above:
- I-B16 · banks' P/E = 0: the CVM reports share count sometimes in units, sometimes in thousands (varying by company and year); market cap came out 1000× too small and P/E was zero. I-B16 (price × shares recomputed) caught it — we fixed 661 annual and 2,027 quarterly multiples.
- I-B24 · the vanishing profit: the profit/equity account varies by bank (Itaú 3.09, BB 3.11); if the label search fails, the number vanishes silently and ROE is born wrong. I-B24 makes that hole fail.
- H-B23 · the 800% dividend yield: old B3 dividends carry a price not adjusted for splits; without H-B23 the yield would look absurdly real. The flag keeps the record and warns.
- I-B20 · the missing COTAHIST 2023: on the first deploy one year of prices failed to download silently; the API shipped with ~50k fewer prices and the suite passed, because nothing checked coverage. We added I-B20 — a year without prices now fails the build loudly.
- I-B33 · Oil & Gas at −89.6% in one week: COTAHIST isn't split-adjusted; a 10:1 split read as a −90% weekly return and stayed in the cumulative return forever, with nothing failing (a blind amplitude filter didn't fix it either — it just flipped which direction was wrong). I-B33 (no sector week beyond ±35%, the ruler is the exchange itself) stops the build.
- I-B31 · 364 of 865 sector-index weeks frozen: extending the series back to 2010, a sector with no company carrying a market cap that week turned into a factor of 1.0 — a flat line that the cumulative return read as 'market stood still', and the 'since 2010' return came out fictional (+527%). I-B31 fails on any week repeated to the cent.
- I-E05 · EMBRAER's 2010 P/E priced with 2025 data: the point-in-time price lookup fell forward with no ceiling whenever the current ticker had no price at balance-sheet time (ticker change, share-class migration); the multiple came out priced 15 years into the future, in 22% of annual and quarterly rows, silently. The 45-day window (and I-E05) blocks it: no session inside the deadline, no multiple computed.
- I-E04 · AZUL at R$ 1.67 quadrillion market cap: the balance sheet carried 54.7 trillion shares from the judicial recovery issuance, but the price used was already on the post-reverse-split (1:150,000) basis — two ends measured on different bases, market cap wrong by orders of magnitude. I-E04 (market cap never above Brazil's GDP) fails the build on that absurdity.
How far back each block of data goes
No asterisks here: this is coverage year by year, counted right now. Indicators (ROE, ROIC, margins, growth) come from the filings alone and cover the whole series. Multiples (P/E, P/BV, EV/EBITDA) need a price and a share count — and the share count comes from CVM's reference form, which the further back you go the fewer companies filed in a usable format. The gap between the two columns is a source limit, not an ingestion hole. If you look for an old P/E and do not find it, it is because nobody has it — not because we hid it. The same numbers as JSON: /cobertura.
| Year | Companies with indicators | Companies with multiples |
|---|---|---|
| 2025 | 441 | 290 |
| 2024 | 443 | 296 |
| 2023 | 441 | 298 |
| 2022 | 428 | 295 |
| 2021 | 422 | 296 |
| 2020 | 410 | 274 |
| 2019 | 371 | 166 |
| 2018 | 326 | 167 |
| 2017 | 317 | 165 |
| 2016 | 311 | 154 |
| 2015 | 303 | 144 |
| 2014 | 301 | 140 |
| 2013 | 292 | 131 |
| 2012 | 291 | 112 |
| 2011 | 284 | 98 |
| 2010 | 277 | 34 |
Live coverage
457 companies · 884,647 price points · 8,650 recorded restatements · last refresh 2026-11-12 01:38:24. Full live counts at /saude.
Sources: CVM (open data, ODbL) and B3 (COTAHIST). Not affiliated with B3 or the CVM. Not investment advice.
Numbers on this page are live. Data version 2026-11-09-ancora-do-fre · page generated 2026-11-12 08:09 UTC. If this does not match /saude, you are reading a cached copy.