What is a “fato relevante”?

The short answer

A fato relevante (literally “relevant fact”, usually translated as material fact) is the disclosure a Brazilian listed company must publish when something happens that could reasonably influence an investor’s decision to buy, sell or hold its securities.

It plays the role an 8-K plays in the United States, or an RNS announcement in the United Kingdom, and it rests on the same idea: price-sensitive information should reach every investor at the same moment, rather than reaching some of them first.

The duty sits with the company’s investor relations officer, who is formally responsible for the disclosure. It is filed electronically with the Comissão de Valores Mobiliários (the CVM, Brazil’s securities regulator) and becomes public on the CVM portal and on B3, the exchange, as soon as it is filed.

What it is not: the comunicado ao mercado

Brazilian companies file several kinds of document, and the two that look alike from outside are the fato relevante and the comunicado ao mercado, the market announcement.

The difference is the threshold. A fato relevante is for information capable of moving the price: a merger, a court ruling, the loss of a concession, a discovery, a default. A comunicado ao mercado is informational: a clarification, a scheduling notice, a reply to a press report, an answer to a question the exchange asked.

That distinction matters more than it sounds, and the reason is volume rather than doctrine: a feed that treats both the same buries the first kind inside the second.

What we measured

Most descriptions of Brazilian disclosure stop at the definition. Here is what the flow actually looks like, measured against our archive rather than estimated.

Between September 17, 2026 and October 16, 2026 we archived 680 filings, published across 22 business days, an average of 30.9 per business day. By category:

Comunicado ao Mercado: 415 filings, 61% of the total.

Fato Relevante: 162 filings, 23.8% of the total.

Aviso aos Acionistas: 84 filings, 12.4% of the total.

Informações de Companhias em Recuperação Judicial ou Extrajudicial: 15 filings, 2.2% of the total.

OPA - Edital de Oferta Pública de Ações: 4 filings, 0.6% of the total.

These counts come from our own archive, rebuilt every day from the CVM open data and its filing system. They are not published anywhere else, and they move: this page is generated from the live archive rather than written once.

Why this is hard to follow from abroad

Every filing is in Portuguese, and there is no official English version. The document is a PDF, sometimes a scan, with no summary and no machine-readable tag saying which sector it belongs to. The company is identified by its CNPJ, Brazil’s corporate tax number, which means nothing to a reader who does not already hold the mapping.

There is also no ranking. The regulator publishes what is filed, in the order it is filed. An interest-payment notice and a change of control arrive in the same list, carrying the same weight.

So the obstacle for an investor outside Brazil is not access: the filings are public and free. It is that reading all of them, every business day, in a second language, is a job.

A note on sources

Disclosure of material acts and facts by Brazilian listed companies is governed by CVM rules that have been consolidated and renumbered over the years. For the text in force, go to the regulator rather than to any secondary summary, including this one. cvm.gov.br publishes both the rules and the filings themselves.