What do market hours mean in trading?

Market hours indicate the time periods when trading is available for specific financial instruments or exchanges. Each instrument has a defined trading schedule that determines when orders can be placed, executed, and managed. Outside of these hours, the market for that instrument is closed, and no trading activity can take place until the next scheduled session begins.

Different instrument types follow different market hour schedules. Stocks are traded during the hours set by their respective exchanges, while forex markets operate nearly 24 hours a day during the business week due to the global nature of currency trading across overlapping time zones. Commodities, indices, and other instruments each have their own specific windows of availability, which may include brief daily pauses for settlement or maintenance. For CFD traders, the available trading hours may closely follow the underlying market but can also differ slightly depending on the platform's pricing model and liquidity arrangements.

Understanding market hours is important for several practical reasons. Liquidity levels, spread widths, and overall price behaviour can vary significantly depending on when during the trading session a position is opened or closed. The most active periods — typically when major financial centres overlap, such as the London–New York window — generally offer the tightest spreads, fastest execution, and smoothest price action. Conversely, trading near the edges of a session or during transitions between regional markets may involve wider spreads and less predictable conditions. Traders are advised to check the specific market hours for each instrument they trade in the platform's specifications and to plan their activity around the periods that offer the most favourable conditions for their strategy.