## When Does the Stock Exchange Open in 2024? Check the New B3 Calendar

In 2024, the Brazilian stock exchange presents significant changes to its operational calendar. For investors monitoring the market, understanding what time the stock exchange opens is essential to avoid missing trading opportunities and portfolio planning.

B3, restructured in 2017 after the merger of institutions such as BM&FBOVESPA and CETIP, has established itself as Brazil's main securities market. Since then, its operation follows a well-defined pattern, although it undergoes annual adjustments due to the presence of international investors and synchronization with global markets.

## B3 Operating Hours in 2024

### Period: November 6, 2023, to March 10, 2024

During this interval, influenced by American daylight saving time, the stock exchange closes its operations at 6:00 PM (Brasília time). During this period, after-market trading is not conducted.

**Trading session structure:**
- Pre-opening: 9:45 AM to 10:00 AM
- Regular opening: 10:00 AM to 6:00 PM
- Continuous trading of stocks, bonds, and derivatives from over 400 Brazilian companies

### Starting March 11, 2024

When American daylight saving time ends on March 10, what time does the stock exchange open to return to standard time? The closing reverts to 5:00 PM, and after-market trading resumes from 5:30 PM to 6:00 PM.

**New configuration:**
- Pre-opening: 9:45 AM to 10:00 AM
- Trading hours: 10:00 AM to 5:00 PM
- After market: 5:30 PM to 6:00 PM

This change reflects the importance of synchronization between Brazilian and international markets, ensuring smooth trading.

## Holidays Affecting B3 in 2024

The stock exchange does not operate on Brazilian national holidays. Check the full calendar:

| Month | Date | Holiday | Notes |
|--------|-------|---------|--------|
| January | 01 (Monday) | New Year's Day | Closed |
| February | 12-13 (Monday-Tuesday) | Carnival | Closed |
| February | 14 (Wednesday) | Ash Wednesday | Continuous session 1:00 PM - 5:55 PM |
| March | 29 (Friday) | Good Friday | Closed |
| May | 01 (Wednesday) | Labor Day | Closed |
| May | 30 (Thursday) | Corpus Christi | Closed |
| November | 15 (Friday) | Proclamation of the Republic | Closed |
| December | 25 (Wednesday) | Christmas | Closed |
| December | 31 (Tuesday) | New Year's Eve | Internal schedule |

**Important detail:** Local holidays, such as São Paulo's anniversary, do not affect the stock exchange operations.

## Impacts of the Changes on the Brazilian Market

The schedule adjustments are not arbitrary. They reflect the growing interconnection between the global and Brazilian financial markets, where foreign investors move significant volumes of capital in stocks, funds, and derivatives.

### Reasons for Synchronization

The presence of international investments, currency fluctuations, and commodity price swings such as oil and metals create interdependencies among exchanges. Keeping the stock exchange synchronized with major American markets ensures:

- Arbitrage opportunities for global investors
- Adequate liquidity in trading
- Confidence of international investors in the Brazilian market

### Recommendations for Investors

To avoid missing investment opportunities:

1. Regularly monitor the official B3 calendar
2. Stay alert to schedule changes, especially during transition periods (summer/winter)
3. Organize your strategy considering when the stock exchange opens and closes
4. Use pre-opening and after-market periods carefully, as they operate with specific restrictions
5. Stay informed about deadlines for operations before holidays

The Brazilian stock exchange remains a relevant opportunity for both local and international investors who understand its operating hours and dynamics.