Trading Hours

The Australian Securities Exchange (ASX) is open continuously between 10am (Sydney) and 4:10pm/4:12pm (Sydney) time, but there are some inconsistencies.

  • ASX Open Time: Starts at 10am (Sydney)
  • ASX Close Time: Between 4:10pm and 4:12pm (Sydney)

For example, the open is staggered over 9 minutes, and the close is a randomly generated time between 4:10pm and 4:12pm (Sydney). Additionally, orders can be changed or amended outside those times.

These market "phases" are listed below.

ASX Market Phases

Time Status
7:00am - 10:00am

Trades can be entered into the system but no trading takes place. All trades are queued according to their price with priority given to trades entered first.

ASX Open

Opening starts at 10:00 am (Sydney) and lasts for approximately 10 minutes.

Group 1 - 10:00:00 am Letters A-B (e.g. ANZ)

Group 2 - 10:02:15 am Letters C-F (e.g. CBA)

Group 3 - 10:04:30 am Letters G-M (e.g. GNC)

Group 4 - 10:06:45 am Letters N-R (e.g. NAB)

Group 5 - 10:09:00 am Letters S-Z (e.g. SEK)

The opening time is randomly generated and occurs up to 15 seconds either side of the times shown above. E.g. Group 1 may open at any time between 9:59:45 am and 10:00:15 am

10:00am - 4:00pm
Normal Trading

Orders are placed immediately into the market and transact as soon as volume is available at the specified price level.

4:00pm 4:10pm
Pre-CSPA ("Match")

You can place, remove, or amend an order, but no trades actually take place.

Orders (both buy and sell) are ranked according to their price. Who ever bids the highest (for buyers) or offers the lowest (for sellers) is placed at the front of the queue. Often there is a crossover in the middle (e.g. the lowest seller might offer $1.55 and the highest buyer might bid $1.63). The area in the middle where they cross over is called the “match”.

4:10pm - 4:12pm
ASX Close (Closing Single Price Auction)

A random time for the close is generated by the ASX between 4:10 - 4:12 pm AEST. "Matching” share prices are weighted to find their mid-point and this becomes the closing price of the share. All trades that take place on the close transact at the same price regardless of what price an investor bids or offers.

4:12pm - 6:50pm

Trading has stopped for the day. New trades cannot be entered into the system but stockbrokers can change or remove existing orders.

6:50pm - 6:59pm
Purge Orders

Orders that are too far from the market or have expired are removed from the market.

6:59pm - 7:00pm
System Maintenance

For administration purposes.

7:00pm - 7:00am

The system is closed. The database is updated with securities being added and removed.


ASX Trading Calendar (2023)

Public Holiday Date ASX Trading Business Day CHESS Settlement
New Year's Day Mon 2 January CLOSED No No Settlement
Australia Day Thurs 26 January CLOSED No No Settlement
Good Friday Fri 7 April CLOSED No No Settlement
Easter Monday Mon 10 April CLOSED No No Settlement
ANZAC Day Tue 25 April CLOSED No No Settlement
King's Birthday Mon 12 June CLOSED No No Settlement
Last Day Before Christmas Fri 22 December EARLY CLOSE1 Yes Settlement
Christmas Day Mon 25 December CLOSED No No Settlement
Boxing Day Tue 26 December CLOSED No No Settlement
Last Day Of Year Fri 29 December EARLY CLOSE1 Yes Settlement

1 Trading ceases at 2:10pm (AEDT).


Global Market Trading Hours (Live)

Note: No responsibility is accepted for any inaccuracies in the content published here.