2025 US Stock Market Complete Guide: Closing Days, Opening Hours, and Korea Time Comparison Chart at a Glance

Why Are US Stock Market Trading Hours Important?

If you want to invest in US stocks, there’s something you must know. It’s the trading hours and market closing days. Since there is almost a 14-hour time difference with Korea, not knowing the exact times could cause you to miss trading opportunities. It gets even more complicated during daylight saving time. This article summarizes all the information about the US stock market in 2025 in a table, so bookmark it and check regularly.

What Are the Differences Among the Three Major US Stock Exchanges?

The US stock market has several exchanges, but the three most important are:

New York Stock Exchange(NYSE) is a historic exchange established in 1792, and it’s the largest in the world by market capitalization. About 2,400 companies are listed, with a total market cap of approximately $23 trillion. Traditional large-cap stocks like Berkshire Hathaway, Johnson & Johnson, and Visa are mainly listed here.

Nasdaq(NASDAQ) was founded in 1971, making it relatively recent, but it’s known as the tech hub. Apple, Microsoft, Nvidia, and other tech giants are abundant. It ranks second in the world by market cap, after the NYSE.

American Stock Exchange(AMEX) primarily lists mid- and small-cap companies. It has a different character from the NYSE, which is focused on large corporations.

Complete Guide to US Stock Market Opening and Closing Times in 2025

All three exchanges operate on the same trading hours. Regular trading hours are from 9:30 AM to 4:00 PM Eastern Time, which corresponds to 11:30 PM to 6:00 AM Korea time. During daylight saving time(from the second Sunday in March to the first Sunday in November), the hours are one hour earlier, starting at 10:30 PM.

In addition to regular hours, pre-market trading(from 4:00 AM to 9:30 AM) and after-hours trading(from 4:00 PM to 8:00 PM) (Korea time 6:00 PM to 2:00 AM) are also available.

*During daylight saving time

How Do US Trading Rules Differ from Korea’s?

The US stock market has several key differences from Korea. First, there are no price limit restrictions—no upper or lower limits like in Korea. Second, settlement occurs two business days after the trade. Third, all transactions are conducted in US dollars(USD), with a minimum trading unit of 1 share.

Unlike Korea, where markets open during the day, US markets open at night, making it harder to respond immediately to sharp price movements. Be sure to consider this when planning your trades.

Complete Guide to US Market Holidays in 2025

The US market also closes on certain holidays and special days, similar to Korea. In 2025, there are a total of 11 full market holidays.

Early Market Close Schedule Besides Holidays

In addition to full holidays, the market closes early on some days. The market closes at 1:00 PM Eastern Time, which is around 2-3 AM Korea time the next day.

Comparison of Trading Hours of Major Global Stock Exchanges

If you trade stocks in other countries besides the US, refer to this table. Note that the London Stock Exchange operates on daylight saving time, and Tokyo, Hong Kong, and Shanghai have intra-day trading breaks.

*During daylight saving time

Final Tip: Checklist for Successful Trading

Always check the 2025 market holiday schedule when planning your trades. It’s helpful to be aware of weekends and holidays in advance. Remember the effects of daylight saving time and the absence of price limits in the US. Since exchange rules can change without notice, regularly check the official sites for the latest updates. Using this information effectively will help you achieve more successful US stock investments.