What time does the stock market open and close?

Regular U.S. trading runs 9:30 a.m. to 4:00 p.m. Eastern time, Monday through Friday, excluding U.S. market holidays. Pre-market trading starts as early as 4:00 a.m. and after-hours runs until 8:00 p.m.

Why did a stock price change after the market closed?

After-hours trading. A limited set of participants keeps trading until 8:00 p.m. Eastern, and prices react to news released after the close — especially earnings reports. These moves happen on thin volume and often shift by the next open.

What happens if I place an order when the market is closed?

With standard settings it queues until the next open and executes then — at the opening price, not the last price you saw. Using a limit order protects you from an unexpected gap between close and open.

Stock Market Hours: When Markets Open, Close & Trade After Hours

The U.S. stock market has official hours: 9:30 a.m. to 4:00 p.m. Eastern (New York) time, Monday through Friday, closed on U.S. holidays. Yet stock prices visibly move outside those hours — which confuses almost everyone at first.

This guide covers the sessions, what actually happens in each, and the practical rules for placing orders outside regular hours.

Regular hours: where the real market lives

From 9:30 a.m. to 4:00 p.m. Eastern, the full market participates: retail investors, funds, market makers. Volume is deepest, spreads are tightest, and prices are most reliable.

The first and last 30 minutes are typically the most volatile stretches of the day, as overnight news gets priced in at the open and funds rebalance into the close.

Pre-market and after-hours: thin and jumpy

Pre-market trading runs roughly 4:00–9:30 a.m. Eastern, and after-hours from 4:00–8:00 p.m. Only a fraction of participants trade in these sessions, so volume is thin and spreads are wide.

Extended-hours prices react instantly to news — especially earnings, which most companies release just after the close or before the open. A stock "down 8% after hours" on earnings is a real signal, but the exact number often changes substantially by the next open.

Practical rule: treat extended-hours moves as a preview, not a verdict. The regular-session open is where the full market votes.

Placing orders outside market hours

An order placed at night with a standard broker simply waits and executes at (or after) the next open — at whatever the price is then, which can differ from the last close you saw.

That gap is why limit orders matter for off-hours ordering: a market order queued overnight fills at an unknown price; a limit order fills only at your stated price or better.

Some brokers offer extended-hours execution as an option. It works, but you inherit the thin-volume problem — wider spreads and worse fills.

Holidays, half days, and other markets

U.S. markets close for about 10 holidays a year (New Year’s Day, Independence Day, Thanksgiving, Christmas, etc.) and close early at 1:00 p.m. on a few dates around holidays.

Other assets keep different clocks: crypto trades 24/7, major foreign exchanges run on their local hours, and U.S. index futures trade nearly around the clock on weekdays — which is why "the market" can seem to move while New York sleeps.

Stock Market Hours Explained: Regular, Pre-Market & After-Hours