Today’s US stock trading hours complete guide: 2025 market opening and closing schedule, holiday strategies, and (Korean time conversion table included)

Introduction: Why You Need to Know U.S. Stock Trading Hours

For investors looking to trade U.S. stocks today, understanding the exact trading hours is essential. The U.S. stock markets operate under daylight saving time, and the time difference with Korea can make trading hours complex. Incorrect time information may cause you to miss trading opportunities or incur unexpected losses. This guide provides the regular trading hours of major stock exchanges, after-hours trading, holidays, and a conversion table based on Korea time. With this, you can plan your U.S. stock investments more efficiently today.

Overview of the 3 Major U.S. Stock Exchanges at a Glance

To trade U.S. stocks today, you first need to understand the characteristics of the main exchanges. The U.S. stock market is divided into three main exchanges: the New York Stock Exchange(NYSE), NASDAQ(NASDAQ), and the American Stock Exchange(AMEX).

New York Stock Exchange(NYSE): The Largest in the World

Founded in 1792, the NYSE is the world’s largest stock exchange by market capitalization. About 2,400 companies are listed, with a total market cap of approximately $23 trillion. Traditional large-cap companies such as Berkshire Hathaway(BRK.A), Johnson & Johnson(JNJ), Visa(V), and Walmart(WMT) are mainly listed here.

NASDAQ(NASDAQ): The Main Stage for Tech Companies

Established in 1971, NASDAQ is relatively younger but has rapidly grown to become the second-largest stock exchange in the world. It is home to many high-tech companies like Apple(AAPL), Microsoft(MSFT), and NVIDIA(NVDA), attracting investors interested in high-growth stocks in the U.S. today.

American Stock Exchange(AMEX): The Mid and Small Cap Market

AMEX is one of the three major U.S. exchanges, listing mainly mid- and small-cap companies, unlike NYSE. It is a market that investors interested in discovering lesser-known companies pay attention to.

U.S. Stock Trading Hours and Regulations: From Regular Trading to After-Hours

Regular Trading Hours and Korea Time Conversion

All three exchanges follow the same trading hours:

• Eastern Time: 09:30 ~ 16:00
• Korea Time: 23:30 ~ 06:00 (During daylight saving time: 22:30 ~ 05:00)

When trading U.S. stocks today, remember that trading is possible from 11:30 PM to 6:00 AM Korea time.

Pre-market and After-hours Trading

Pre-market hours (Before regular trading):

• Eastern Time: 04:00 ~ 09:30
• Korea Time: 18:00 ~ 23:30 (During daylight saving time: 17:00 ~ 22:30)

After-hours trading (After regular trading):

• Eastern Time: 16:00 ~ 20:00
• Korea Time: Next day 06:00 ~ 10:00 (During daylight saving time: 05:00 ~ 09:00)

Key Points of Trading Regulations

Important regulations to know when trading U.S. stocks today:

• Trading currency: USD
• Trading unit: 1 share
• Price limit: None (Unlike Korea, no upper/lower price limits)
• Settlement: Completed 2 business days later
• Fees: Vary by brokerage and intermediary

The absence of price limits is especially important. Since trading occurs overnight Korea time, rapid responses during sharp declines can be difficult, so risk management is crucial.

*During daylight saving time, the hours are advanced by 1 hour.

2025 U.S. Market Holidays and Early Close Schedule

Before trading U.S. stocks today, always check for holidays. The 2025 holidays are as follows:

( Early Close Days: Markets close earlier than usual

On certain dates, U.S. markets close early. The Korea time equivalents are:

Comparing Global Market Trading Hours: Check Other Markets Too

For investors trading not only U.S. stocks but also stocks from other countries, here is a summary of major exchanges’ trading hours:

Note that the London Stock Exchange operates under daylight saving time, and Tokyo, Hong Kong, and Shanghai have intra-day breaks.

Conclusion: Stay Updated for Successful Investing

To succeed in trading U.S. stocks today, accurate time information is essential. By understanding the opening and closing hours, holidays, and trading regulations outlined in this guide, you can plan your trades more effectively. However, exchange schedules may change, so always check the latest information. Manage your time and risks carefully to achieve your investment goals. Wishing all investors aiming to trade U.S. stocks today the best returns.