Takes place after the official close of business on the trading floor of a stock exchange. No set length of time is allocated for after hours dealing, particularly with the advent of electronic screen trading.
On the London Stock Exchange, dealings done after the MQP. Such dealings are treated as dealings done on the following business day. In general, trading after the hours a stock market has closed. (For all major US stock markets, after-hours trading is 16:00-18:30 Eastern Standard Time). After-hours trading often takes place after the release of news that could make the price of a stock rise or fall sharply after the close of trading. Participation in the after-hours market is strictly voluntary and may offer less liquidity and inferior prices.
Dealing done at the end of the mandatory quote period. These are treated as dealings done on the following business day.
These are deals done after the official dealing of the day has finished which are treated as dealings for the following day.
Trading outside the trading hours of the futures markets – eg, trading a futures month in Brent crude outside the IPE and Singapore International Monetary Exchange trading periods.
On the London Stock Exchange, dealings done after the MQP. Such dealings are treated as dealings done on the following business day. On SEAQ, the MQP is 08:30–16:30 and on SEAQ International (qv) 09:30–16:00.
Dealing done after the mandatory quote period, which is treated as dealing done on the following business day.