Below are the Singapore stock trading hours.
| Full-day Trading | Half-day Trading | |
| Opening Routine | ||
| Pre-Open | 08:30 AM - 08:58 AM/08:59 AM* | 08:30 AM - 08:58 AM/08:59 AM* |
| Non-Cancel | 08:58 AM/08:59 AM* - 09:00 AM | 08:58 AM/08:59 AM* - 09:00 AM |
| Continuous Trading Hours | 09:00 AM - 12:00 PM | 09:00 AM - 12:00 PM |
| Mid-Day Break | ||
| Pre-Open | 12:00 PM - 12:58 PM/12:59 PM* | N/A |
| Non-Cancel | 12:58 PM/12:59 PM* - 01:00 PM | N/A |
| Continuous Trading Hours | 01:00 PM - 05:00 PM | N/A |
| Closing Routine | ||
| Pre-Close | 05:00 PM - 05:04 PM/05:05 PM* | 12:00 PM - 12:04 PM/12:05 PM* |
| Non-Cancel | 05:04 PM/05:05 PM* - 05:06 PM | 12:04 PM/12:05 PM* - 12:06 PM |
| Trade at Close | 05:06 PM - 05:16 PM | 12:06 PM - 12:16 PM |
| Close | 05:16 PM | 12:16 PM |
* The Pre-open/Close phase ends randomly at any time within this one-minute window and the Non-Cancel phase begins immediately after.
Half-day Trading only happens on the following days: Chinese New Year's Eve, Christmas Eve, and New Year's Eve.
Pre-open phase (Opening Routine and Mid-day Break)
1. The Pre-open phase of the Opening Routine starts at 08:30 AM and ends randomly within a one-minute window between 08:58 AM and 08:59 AM.
2. The Pre-open phase of the Mid-day Break starts at 12:00 PM and ends randomly within a one-minute window between 12:58 PM and 12:59 PM.
3. Investors can submit new orders and cancel or modify existing orders during the Pre-open phase, but there will not be order matching.
4. Orders queued in the order book prior to the start of the Mid-day Break will continue to rest in the order book.
Pre-close phase (Closing Routine)
1. The Pre-close phase starts at 05:00 PM and ends randomly within a one-minute window between 05:04 PM and 05:05 PM for full-day trading.
2. It starts at 12:00 PM and ends randomly within a one-minute window between 12:04 PM and 12:05 PM for half-day trading.
Non-cancel phase (Opening Routine, Mid-Day Break and Closing Routine)
1. The Non-cancel phase follows immediately after the Pre-close phase ends.
2. Investors will no longer be able to enter, modify or cancel orders.
3. Unmatched orders will be carried forward to the next trading phase.
Close
The market closes at 05:16 PM (for full-day trading) or 12:16 PM (for half-day trading).
Trade at close
1. Trade at Close (TAC) is a ten-minute trading phase commencing immediately after the closing routine. Orders are matched continuously only at the fixed equilibrium price established from the preceding closing auction.
2. TAC is available for a security on a trading day only if the closing auction for that security on that day resulted in a closing auction price; correspondingly, TAC will not be available for a security if there is no closing auction price on that day.