What time does the stock market open today? I've seen many people ask this question before. If you're a serious trader, you need to know this information well.

Honestly, the stock market opening time is very important because prices tend to fluctuate a lot and there is a lot of news coming in. The Thai stock market is divided into two sessions: the morning session from 10:00 AM to 12:30 PM, and the afternoon session from 2:30 PM to 4:30 PM.

Before the market actually opens for trading, there is a pre-open period from 9:30 AM to 9:55 AM for the morning session, and from 2:00 PM to 2:25 PM for the afternoon session. During this time, the system gathers buy and sell orders to give a rough idea of the prices.

What to watch out for is that the actual market opening time is not the same every day. There is a random 5-minute window (9:55-10:00 AM and 2:25-2:30 PM) to prevent price manipulation. Therefore, the earliest opening time is 9:55 AM, and the latest is 10:00 AM.

For market closing, the afternoon session has a pre-close from 4:30 PM to 4:35 PM, and a random closing window from 4:35 PM to 4:40 PM.

In short, if you know the exact opening time of the stock market, you won't miss important opportunities each day. Since we don't trade all the time, only during market hours, understanding this is a fundamental knowledge for anyone who wants to trade stocks seriously.