SGX Rulebooks
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8.2.1

The trading hours and the application of the market phases are as published by SGX-ST. SGX-ST may vary the trading hours and application of the market phases.

Refer to Practice Note 8.2.1.

8.2.2

The market phases are as follows:—

(1) Pre-Open/Pre-Close

This phase allows order entry, order modification, and withdrawal of orders but no matching of orders.
(2) Non-Cancel

No order entry and amendment are allowed in this phase. All existing orders are matched at a single price according to the algorithm set by SGX-ST. All unmatched orders, except at the close of trading, are carried over to the next phase.
(3) Trading

This phase allows order entry, order modification, and withdrawal of orders. All orders are matched in accordance with price priority, subject to Rule 8.10A, followed by time priority.
(4) Adjust

This phase allows order entry, order modification, and withdrawal of orders. At the end of the phase, orders will be matched at a single price based on the algorithm set by SGX-ST. All unmatched orders will be carried over to the next phase.

Refer to Practice Note 8.2.2.

Amended on 24 February 201424 February 2014 and 16 September 201616 September 2016.

8.2.3

SGX-ST will publish how the algorithm operates.

Refer to Practice Note 8.2.1.