Basic

Market Hours: Definition

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Simple Definition

When the stock market is open: 9:30 AM - 4:00 PM Eastern, Monday-Friday.

Why It Matters

Regular market hours are when most trading happens and prices are most accurate. The first and last 30 minutes tend to be the most volatile. If you're a long-term investor, the exact timing doesn't matter much. But if you're actively trading, know that pre-market (4-9:30 AM) and after-hours (4-8 PM) have wider spreads and less liquidity.

Key Points

  • Market is closed on weekends and 9 holidays: New Year's, MLK Day, Presidents' Day, Good Friday, Memorial Day, Juneteenth, July 4th, Labor Day, Thanksgiving, Christmas
  • Earnings reports often come out before open or after close - causing big moves in after-hours trading
  • Global markets operate in different time zones - you can trade international ETFs during US hours

Related Terms

Common Questions

When the stock market is open: 9:30 AM - 4:00 PM Eastern, Monday-Friday. Regular market hours are when most trading happens and prices are most accurate. The first and last 30 minutes tend to be the most volatile.

Regular market hours are when most trading happens and prices are most accurate. The first and last 30 minutes tend to be the most volatile. If you're a long-term investor, the exact timing doesn't matter much. But if you're actively trading, know that pre-market (4-9:30 AM) and after-hours (4-8 PM) have wider spreads and less liquidity.

Market is closed on weekends and 9 holidays: New Year's, MLK Day, Presidents' Day, Good Friday, Memorial Day, Juneteenth, July 4th, Labor Day, Thanksgiving, Christmas

Earnings reports often come out before open or after close - causing big moves in after-hours trading

Global markets operate in different time zones - you can trade international ETFs during US hours