If you're planning to trade or invest in the US stock markets, understanding when they are open is crucial. The question "Are the US stock markets open on Monday?" is a common one among investors and traders alike. In this article, we'll delve into the hours of operation for the major stock exchanges in the United States and answer your burning question.
Major Stock Exchanges in the US
The United States hosts several major stock exchanges, with the two most prominent being the New York Stock Exchange (NYSE) and the NASDAQ. Additionally, there are regional exchanges like the American Stock Exchange (AMEX) and the Chicago Stock Exchange.
Trading Hours for the NYSE and NASDAQ
Regular Trading Hours:
- NYSE: The NYSE operates from 9:30 AM to 4:00 PM Eastern Time (ET) on weekdays, excluding holidays.
- NASDAQ: Similarly, the NASDAQ operates from 9:30 AM to 4:00 PM ET on weekdays, excluding holidays.
Pre-Market and After-Hours Trading:
- Pre-Market: Both exchanges offer pre-market trading hours, which allow traders to buy and sell stocks before the regular trading day begins. The pre-market trading hours for the NYSE and NASDAQ are from 4:00 AM to 9:30 AM ET.
- After-Hours: After the regular trading day ends, traders can continue to buy and sell stocks during after-hours trading. The after-hours trading hours for both exchanges are from 4:00 PM to 8:00 PM ET.

Market Closings on Mondays
The major stock exchanges in the US, including the NYSE and NASDAQ, are closed on Mondays. This means that no trading occurs on Mondays. However, pre-market and after-hours trading are still available from 4:00 AM to 8:00 PM ET.
Why are the Stock Markets Closed on Mondays?
The primary reason for the stock market's closure on Mondays is to allow for the processing of trades and updates from the previous trading week. This provides the exchanges with a full day to reconcile transactions and update prices before the market reopens on Tuesday.
Exceptions to the Rule
While the major stock exchanges are closed on Mondays, there are some exceptions. For example, the Chicago Stock Exchange operates on a 24-hour trading day, and its hours do not align with the traditional NYSE and NASDAQ trading schedule.
Conclusion
Now that you know the answer to the question "Are the US stock markets open on Monday?" you can better plan your trading and investment activities. Remember, the major stock exchanges, including the NYSE and NASDAQ, are closed on Mondays but offer pre-market and after-hours trading for those who wish to trade outside of regular hours.