When will the US stock market open in 2025? Complete guide to holidays, trading hours, and closing times (Compared to Korea time)

Introduction

For those investing in U.S. stocks, there is something you must know. It’s the exact trading hours of the U.S. stock market and the U.S. holidays. Unlike Korea, the U.S. applies daylight saving time, and the time zone difference is significant. If you do not properly understand the trading hours, your trading plans could be disrupted. Especially on U.S. holidays, the market may close completely or close early, so caution is required.

This guide systematically summarizes the opening and closing times of major U.S. stock exchanges, the 2025 U.S. holidays, and trading rules. All information is compared in table format, and it is organized so you can see the major global stock market hours at a glance.

Why You Need to Know the 3 Major U.S. Stock Exchanges

To understand the U.S. stock market, you first need to grasp the characteristics of the three major exchanges. Each exchange lists different types of companies, and the trading targets may vary depending on investor preferences.

New York Stock Exchange(NYSE) - Dominant in history and size

Founded on May 17, 1792, the New York Stock Exchange is the world’s largest stock exchange. Currently, about 2,400 companies are listed, with a combined market capitalization of approximately $23 trillion. It mainly lists traditional large-cap companies like Berkshire Hathaway, Johnson & Johnson, Visa, and Walmart.

NASDAQ Stock Market(NASDAQ) - Home of tech companies

Established on February 8, 1971, NASDAQ started as an over-the-counter market but quickly grew into an organized exchange. It is now the second-largest stock exchange in the world after NYSE, with a focus on IT giants like Apple, Microsoft, and Nvidia.

American Stock Exchange(AMEX) - Stage for small and medium-sized companies

Along with NYSE and NASDAQ, the American Stock Exchange is one of the three major U.S. exchanges. It mainly lists mid-sized and small companies with growth potential, often used by investors seeking to invest in medium-cap stocks.

U.S. Stock Trading Hours and Regulations - Regular, Pre-market, After-hours

Knowing the exact trading hours of the U.S. stock market helps in planning your investment strategies. Pay special attention to the fact that regular trading hours, pre-market hours, and after-hours hours are different.

All three exchanges apply the same trading hours. However, when converted to Korea time, the trading hours cross over to the next day. Also, from the second Sunday in March at 2:00 AM to the first Sunday in November at 2:00 AM, daylight saving time is applied, and the time is moved forward by 1 hour.

All trades are conducted in U.S. dollars(USD), and settlement is completed 2 business days later. An important difference is that, unlike Korea, the U.S. stock market has no price limit bands. Rapid price fluctuations may require quick responses, so consider this when planning your trades.

*Daylight saving time applied

2025 U.S. Holidays - Advance Planning Required

U.S. holidays are fixed throughout the year, so you need to check them in advance and plan your trading schedule accordingly. On U.S. holidays, regular trading is completely halted, and orders cannot be accepted.

( Before and after U.S. holidays with early market close

Even on non-holiday days, the market may close early on certain dates. These dates should also be reflected in your trading plans.

Comparison of Major Global Stock Market Opening and Closing Times

To accommodate investors trading stocks from various countries, the opening and closing times of major global stock exchanges are summarized here. Each country’s market has its own characteristics, so understanding them in advance helps in building a global portfolio.

*Daylight saving time applied

Conclusion - Master U.S. Holiday and Trading Hours

The success of trading U.S. stocks starts with precise time management. You must check U.S. holidays in advance and familiarize yourself with trading hours considering daylight saving time changes to avoid missing investment opportunities.

Since trading hours and U.S. holidays can change over time, always verify the latest information on official websites before trading. Small precautions like these will lead to successful investing.