Trading hours
Family VII · Market & styles
Not to be confused with after hours, market hours.
Trading hours are the scheduled periods in which an exchange or venue accepts orders and executes trades for a given instrument. They are defined by the venue's rulebook and, for a retail account, further filtered by the hours the broker chooses to route orders. Outside those periods the market is closed, and orders are either rejected or queued for the next session.
How the session is structured
A typical equity trading day is divided into phases rather than one continuous block:
- Pre-open — orders may be entered, amended or cancelled but no matching occurs.
- Opening auction — a single uncrossing price is determined from accumulated orders.
- Continuous trading — orders match immediately against the book, price against price.
- Closing auction — a final uncrossing sets the official closing price.
- Post-close — limited or no trading until the next session.
Futures, foreign exchange and crypto venues often run near-continuously, with a daily maintenance break instead of a hard close. Exact phase boundaries vary by exchange and by instrument, and brokers frequently restrict retail access to a narrower window than the venue itself operates.
Worked example
An exchange lists a stock with continuous trading from 09:30 to 16:00 and a closing auction ending at 16:00. A broker routes client orders only during continuous trading.
What changes the hours
Trading hours are not uniform across instruments or jurisdictions. Factors that shift them include:
- Venue rules — each exchange publishes its own calendar, including half-days and holidays.
- Instrument type — spot FX and futures trade across multiple time zones; single equities do not.
- Broker routing — a broker may open later, close earlier, or offer extended sessions at its own discretion.
- Clock changes — daylight-saving shifts in one financial centre move the overlap with others.
Because these details vary by venue, instrument and broker, the operative hours for a given account should be read from that broker's own schedule rather than assumed from a headline figure.
Often confused with
- after hours
- After-hours refers to trading that occurs outside the standard session, typically on an extended venue or electronic book with thinner liquidity, whereas trading hours are the standard scheduled period itself; the visible sign is whether the clock time falls inside or outside the published session window.
- market hours
- Market hours is the everyday phrase for the same standard session, usually quoted as a single open-to-close span, while trading hours is the broader term covering all phases and venues, including auctions and extended sessions; the visible sign is whether the description mentions only open and close or also pre-open, auction and post-close phases.