B3 Trading Calendar 2026: Key Dates and Market Hours

B3 trading 2026 market hours

B3 structures its trading day into distinct phases, separating the price discovery period from the continuous trading session. Understanding this split is essential for timing entries, particularly for exchange-traded funds (ETFs) that track the Ibovespa index or other specific sectors.

Pre-opening and trading windows

The session begins with a pre-opening phase where orders are collected but not yet executed. This allows the market to establish an equilibrium price before the opening auction. For ETFs, this phase is critical as it sets the initial valuation based on the underlying assets' anticipated performance.

Following the pre-opening, the continuous trading session runs from 10:05 am to 4:55 pm (Brasília time, -03). During this window, orders are matched continuously. This is when most liquidity is found, and price movements reflect real-time supply and demand. ETFs traded on B3 follow this same continuous schedule, ensuring alignment with the broader equity market.

ETF-specific considerations

ETFs on B3 offer exposure to baskets of stocks, currencies, or commodities. Unlike individual stocks, which may have unique trading halts, ETFs generally adhere strictly to the standard session times. However, liquidity can vary significantly between the pre-opening and the continuous session.

Traders should note that the pre-opening period can be volatile as market makers adjust their quotes. For those using algorithmic strategies, waiting until the continuous session begins often provides more stable execution prices. Always verify the specific trading hours for the ETF in question, as some specialized or leveraged products may have different cut-off times.

2026 B3 Market Holidays

The B3 Trading Calendar 2026 outlines specific non-trading days when the exchange closes its doors. These closures affect all asset classes traded on the platform, including equities, futures, and options. Traders must adjust their strategies around these dates, as liquidity dries up and settlement processes halt.

The most significant closures occur during Carnival and Easter, which are major cultural events in Brazil. Carnival typically results in a two-day shutdown, while Easter involves Good Friday and sometimes Holy Saturday. These periods see reduced market activity even on adjacent trading days.

CSD2 trading is suspended on Carnival dates, affecting settlement. This means that while the market is closed, clearing and settlement operations do not proceed as usual. Traders should be aware that positions held over these holidays will not be settled until the next trading day.

For a broader view of market hours and trading sessions, refer to the B3 official trading calendar.

Settlement changes in 2026

The transition to CSD2 is not just a technical upgrade; it is a fundamental shift in how ownership of Brazilian assets is recorded and transferred. For traders, this means the underlying mechanics of settlement are changing, requiring a closer look at operational timelines and new reporting standards. Understanding these changes is essential for maintaining compliance and managing counterparty risk as the market moves toward a more integrated structure.

CSD2 Trading Suspension

To ensure the integrity of the new central securities depository, B3 has scheduled a complete suspension of trading. This halt is necessary to migrate historical positions and test the new infrastructure without market interference. Traders must note that trading and investment confirmations will be suspended on February 12, 2026. During this window, no new trades can be executed, and existing positions will be locked for migration. This is a one-time event, but its impact on liquidity and settlement cycles will be felt throughout the year as the system stabilizes.

New Reporting Requirements

Parallel to the infrastructure shift, B3 is introducing new transparency measures to align with global best practices. Starting June 30, 2026, the exchange will begin publishing the "Analytical Table of Open Positions" in the derivatives section of its daily bulletin. This report will provide detailed insights into exchange derivatives, offering market participants greater visibility into open interest and position concentrations. This change aims to reduce information asymmetry and allow traders to make more informed decisions based on real-time structural data rather than lagging indicators.

B3 Trading 2026 FAQ