US stock market (NYSE & Nasdaq) opens at 9:30 AM ET and closes at 4:00 PM ET, which translates to:
Standard Time (Nov-Mar): Opens 9:30 PM Bangkok time, closes 4:00 AM next day
Daylight Saving (Mar-Nov): Opens 8:30 PM Bangkok time, closes 3:00 AM next day
2025 Update: DST kicks in March 9 and ends November 2.
Why These Hours Matter
The First 30 Minutes (Opening Bell) - This is when real action happens. Overnight news gets priced in instantly. Volume spikes, volatility maxes out. Gap moves of 5-10% aren’t uncommon based on earnings or economic data drops.
The Last Hour (Closing Bell) - Volume surges again as traders exit positions. Another volatile window.
The Quiet Middle - Volume dries up. Good for range traders, boring for momentum hunters.
Key Times for Economic Data
Most major US economic releases (CPI, jobs reports, PMI, consumer confidence) drop around 7:30 PM or 8:00 PM Bangkok time - right before or soon after market open. These often trigger 2-5% moves within minutes.
Extended Hours
Pre-Market (3 PM - 8:30 PM Bangkok): Low liquidity but prices can swing hard on overnight news
After-Hours (3 AM - 7 AM Bangkok): Where earnings surprises play out. Stock can jump 20%+ or dump 30% on results.
The Play
First 30 mins + last hour? Use momentum strategies (breakouts, trend following). Midday lull? Range trade support/resistance. Respect your stop losses—volatility cuts both ways.
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US Stock Market Trading Hours: When & Why It Matters
US stock market (NYSE & Nasdaq) opens at 9:30 AM ET and closes at 4:00 PM ET, which translates to:
Standard Time (Nov-Mar): Opens 9:30 PM Bangkok time, closes 4:00 AM next day Daylight Saving (Mar-Nov): Opens 8:30 PM Bangkok time, closes 3:00 AM next day
2025 Update: DST kicks in March 9 and ends November 2.
Why These Hours Matter
The First 30 Minutes (Opening Bell) - This is when real action happens. Overnight news gets priced in instantly. Volume spikes, volatility maxes out. Gap moves of 5-10% aren’t uncommon based on earnings or economic data drops.
The Last Hour (Closing Bell) - Volume surges again as traders exit positions. Another volatile window.
The Quiet Middle - Volume dries up. Good for range traders, boring for momentum hunters.
Key Times for Economic Data
Most major US economic releases (CPI, jobs reports, PMI, consumer confidence) drop around 7:30 PM or 8:00 PM Bangkok time - right before or soon after market open. These often trigger 2-5% moves within minutes.
Extended Hours
Pre-Market (3 PM - 8:30 PM Bangkok): Low liquidity but prices can swing hard on overnight news
After-Hours (3 AM - 7 AM Bangkok): Where earnings surprises play out. Stock can jump 20%+ or dump 30% on results.
The Play
First 30 mins + last hour? Use momentum strategies (breakouts, trend following). Midday lull? Range trade support/resistance. Respect your stop losses—volatility cuts both ways.