2025 US Stock Market Complete Guide: Holidays, Trading Hours, and Market Regulations at a Glance

Essential Information Every U.S. Stock Investor Must Know

If you are investing in U.S. stocks, it is essential to understand the market’s operating hours, holiday schedule, and trading rules accurately. Especially since the U.S. observes daylight saving time and has a significant time difference with Korea, not knowing the exact trading hours can disrupt your investment plans. Fortunately, this article systematically organizes all information about the U.S. stock market. You can find details from the characteristics of major exchanges to holiday dates in 2025 and trading regulations at a glance, all arranged in a table format for easy reference.

Understanding the Three Major U.S. Stock Exchanges at a Glance

Let’s take a look at the three main exchanges that make up the U.S. stock market.

New York Stock Exchange(NYSE): The world’s leading stock exchange

Founded on May 17, 1792, the New York Stock Exchange (NYSE) is the largest in the world by market capitalization due to its long history. About 2,400 companies are listed, with a total market cap of approximately $23 trillion. Traditional large corporations such as Berkshire Hathaway(BRK.A), Johnson & Johnson(JNJ), Visa(V), and Walmart(WMT) are mainly listed here.

NASDAQ(NASDAQ): The hub of IT companies

Established on February 8, 1971, NASDAQ started as an over-the-counter market and quickly grew into an organized exchange. It is currently the second-largest exchange in the world, with a focus on IT companies. You can find global tech giants like Apple(AAPL), Microsoft(MSFT), and NVIDIA(NVDA).

American Stock Exchange(AMEX): Gateway for small and medium-sized enterprises

One of the three major U.S. exchanges, the American Stock Exchange primarily lists mid-sized and small companies, differentiating itself from the NYSE, which mainly features large corporations.

Complete Guide to U.S. Stock Market Holidays in 2025

Like Korea, the U.S. stock market closes on major holidays. It is important to check the holiday schedule in advance to plan your trading effectively.

Additionally, on the day before Independence Day, the day after Thanksgiving, and Christmas Eve, the market closes early at 1:00 PM Eastern Time.

Detailed Analysis of U.S. Stock Market Trading Hours and Regulations

The trading hours for NYSE, NASDAQ, and AMEX are the same. However, they change according to Korea time, and during daylight saving time(from the second Sunday in March to the first Sunday in November), trading hours are moved forward by one hour.

All three exchanges trade in U.S. dollars(USD), with settlement completed two business days later. An important point is that the U.S. stock market does not have a price limit system like Korea. Since trading occurs overnight in Korea time, rapid declines may be difficult to respond to quickly, so consider this when developing your trading strategy.

*During daylight saving time

Comparison of Trading Hours on Major Global Exchanges

For those trading stocks in various countries besides the U.S., here is a summary of international exchange hours. The London Stock Exchange observes daylight saving time, and the Tokyo, Hong Kong, and Shanghai exchanges have lunch break closures.

*During daylight saving time

Final Tips for Successful Trading

Accurately understanding the trading hours, holidays, and regulations of the U.S. stock market is fundamental to successful investing. Knowing the trading hours allows you to plan your trades efficiently, and being aware of holidays in advance can prevent unexpected losses.

Since exchange regulations and hours can change, always check the latest information. We hope this article helps you make wise investment decisions.