Differences

This shows you the differences between two versions of the page.

--- australia_securities_exchange [2020/06/17 15:00] – [Auction Mechanisms] maya
+++ australia_securities_exchange [2025/06/23 14:00] (current) – [Auction Mechanisms] hugo
@@ Line 7: / Line 7: @@
 Currency: Australian Dollar (AUD)
-[[https://www.asx.com.au/about/asx-trading-calendar-2020.htm | Holiday Calendar]]\\
+[[https://www2.asx.com.au/markets/market-resources/trading-hours-calendar/cash-market-trading-hours/trading-calendar | Holiday Calendar]]\\
-[[http://www.asx.com.au/about/trading-hours.htm | Trading Hours]]
+[[https://www2.asx.com.au/markets/market-resources/trading-hours-calendar/cash-market-trading-hours | Trading Hours]]
 ===== Trading Summary =====
@@ Line 37: / Line 37: @@
 === Open ===
-The opening auction procedure begins at 10:00 AM and lasts for about 10 minutes. Opening prices are calculated during this phase. Securities open in five groups, according to the starting letter of their ASX code:
+To enable the orderly consumption of the burst of messages during the single opening auction, effective June 23, 2025 the ASX introduced a new session state call 'Opening Single Price Auction' (OSPA). The OSPA will be rendomised, followed by the introduction of a levelling or buffering period before transitioning to continuous trading. A summary of OSPA features is listed below:
+  * The auction and transition to OSPA state occurs during a 15 second randomised window beginning at 09:59:00
+  * New orders and order amendments will be rejected during OSPA. Any attempts to enter new orders or amend existing orders will be rejected.
+  * Cancellation of orders during OSPA is permitted
+  * Report of Off Market Trades is permitted
+  * Transition from OSPA to Open (continuous matching) occurs during a 15 second randomised window
+  * Minimum duration of OSPA is 30 seconds with a maximum of 60 seconds (dependent on randomisation)
+For more information please review [[https://www.asx.com.au/markets/market-resources/trading-hours-calendar/cash-market-trading-hours | ASX Trading Hours]]
-  * Group 1  10:00:00 am +/- 15 secs 0-9 and A-B, e.g. ANZ, BHP
-  * Group 2  10:02:15 am +/- 15 secs C-F, e.g. CPU, FXJ
-  * Group 3  10:04:30 am +/- 15 secs G-M, e.g. GPT
-  * Group 4  10:06:45 am +/- 15 secs N-R, e.g. QAN
-  * Group 5  10:09:00 am +/- 15 secs S-Z, e.g. TLS
 === Close ===
@@ Line 56: / Line 60: @@
   * **e)** Any Bids or Offers which have not been matched at the completion of the process described in point b) will be carried through to the next Session State
 **Note:** any order sent during the closing auction must be within 12% of the theoretical auction price. Otherwise, it will get cancelled automatically as a result of the exchange's fat finger check.
+**Note:** to put orders into market directly, the order price should not be away from the Match Price by more than 5%. Else, they breach price limit and orders will be rejected.
 **Auction Periods**
@@ Line 74: / Line 80: @@
   * No trades may be reported
-**Order Types:** traders can enter Limit orders to participate in the auction.
+**Order Types:** traders can enter a Limit orders to participate in the auction.
+===== ASX24 Futures =====
+ASX24 Futures are available for execution/send orders. Quotes are still available.
 ===== Additional Info =====