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What Is Written Here Is Not Investment Advice. It has been published on this page to explain the terminology used with explanations about the stock market, digital currencies, economy, finance and investment instruments.

🔍What is US Pre-Open and Post-Close (Pre Market / Post Market)?

  What is US Pre-Open and Post-Close (Pre Market / Post Market)?

The US stock market has regular trading hours from 9:30 a.m. to 4 p.m. ET on weekdays. However, investors can also trade before and after these hours in what are known as pre-market and post-market sessions. These sessions allow traders to take advantage of news events, earnings reports, or other factors that may affect the market outside of normal hours.

Pre-market trading typically occurs between 8 a.m. and 9:30 a.m., though it can begin as early as 4 a.m. ET. Post-market trading starts at 4 p.m. and can run as late as 8 p.m. ET. These sessions are also called extended-hours trading, and they are available through electronic communication networks (ECNs) that match buyers and sellers without using an exchange.

There are some benefits and risks associated with pre-market and post-market trading. Some of the benefits include:

- The ability to react quickly to breaking news or earnings announcements that may affect the price of a stock.

- The opportunity to trade at more favorable prices than during regular hours, especially if there is low liquidity or high volatility in the market.

- The chance to gain an edge over other traders who only trade during regular hours.

Some of the risks include:

- The lack of liquidity and volume, which can make it harder to execute orders at desired prices or quantities.

- The higher volatility and wider spreads, which can increase the risk of losing money or getting a worse deal than expected.

- The reduced competition and regulation, which can expose traders to more market manipulation or fraud.

Pre-market and post-market trading are not for everyone. They require more experience, skill, and discipline than regular-hours trading. They also involve different rules and fees than regular-hours trading. Therefore, investors should do their research and understand the pros and cons before engaging in pre-market and post-market trading.


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