XJO s&p/asx 200

0.36%

8,474.9

XJO - Bear Posts only (Factors which might cause the markets to fall), page-23311

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Ewebute

6,964 Posts.

1143

23/06/25

16:47

Post #: 79534737

Originally posted by Ewebute: ↑
Please elaborate on the post close trading situation.
ChatGPT said:
Certainly — the new post-close trading session on the ASX is a major structural change that quietly rewrites the end-of-day game plan for many traders and institutions. Let’s unpack it in detail:
Post-Close Trading: What It Is
Starting June 23, 2025, ASX now offers a Post-Close Session (PCS) after the usual closing auction.
Process Flow:
4:00 PM AEST
The market enters the Pre-Close Phase, where orders can still be modified or entered.
4:10 PM – 4:11 PM AEST
Closing Single Price Auction (CSPA) happens — this determines the official closing price.
NEW: Post-Close Session (4:11 PM – 4:12 PM AEST)
A 1-minute window where participants can trade at the official closing price.
Orders can be matched but only at that fixed closing price.
No new price discovery — it’s locked to the CSPA result.
Trades are settled as normal, and volumes from this session are reported as part of that day's activity.
✅ Key Rules of the Post-Close Session:
Eligible Orders:
Only Limit Orders priced exactly at the closing price will be matched.
No Order Amendments:
You can only enter or cancel orders — you cannot modify existing orders.
No Price Movement:
The price is frozen — no bidding wars, no undercuts — pure liquidity cleanup.
️ Why Did ASX Introduce It?
Global Alignment:
Similar post-close sessions exist on exchanges like NASDAQ and Euronext.
Additional Liquidity:
Helps large players execute remaining positions without distorting prices.
Earnings Releases:
Stocks that release earnings or news right at the close now have a short window for immediate, same-day trades.
Operational Flexibility:
Clean up unmatched orders that would otherwise carry forward or expire.
⚡ Who Benefits?
Fund Managers: Can clean up large positions with minimal impact.
Day Traders: Can opportunistically close out remaining exposure.
Algorithmic Traders: Will likely adapt to capture micro-spreads in this final phase.
Potential Risks or Manipulations?
Thin liquidity in this window could allow quiet accumulation or disposal by savvy players.
There’s some debate over whether this could slightly distort volume statistics, as it adds extra trades post-auction.
Summary Table
Feature Pre-Change Post-Change
1 Post-Close Trading No Yes, 4:11 PM – 4:12 PM
2 Price Movements Allowed N/A No, only closing price trades
3 Order Types N/A Limit Orders at closing price
4 Purpose N/A Final liquidity clean-up
Expand
The new system in action... or INACTION?

And then only additional trades between 16:11 and 16:12....

Oh.. unless you have special privileges... lol

I can understand the special crossing after market, but c'mon... Maybe just a first day issue. :P

XJO Value at posting: 8,474.9

3 Upvote

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Last 8,474.9		Change -30.600(0.36%)		Mkt cap ! n/a

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XJO - Bear Posts only (Factors which might cause the markets to fall), page-23311

Post-Close Trading: What It Is

Process Flow:

✅ Key Rules of the Post-Close Session:

️ Why Did ASX Introduce It?

⚡ Who Benefits?

Potential Risks or Manipulations?

Summary Table

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Featured News

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	Feature	Pre-Change	Post-Change
1	Post-Close Trading	No	Yes, 4:11 PM – 4:12 PM
2	Price Movements Allowed	N/A	No, only closing price trades
3	Order Types	N/A	Limit Orders at closing price
4	Purpose	N/A	Final liquidity clean-up

XJO - Bear Posts only (Factors which might cause the markets to fall), page-23311

Post-Close Trading: What It Is

Process Flow:

✅ Key Rules of the Post-Close Session:

️ Why Did ASX Introduce It?

⚡ Who Benefits?

Potential Risks or Manipulations?

Summary Table

Top Stories

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Listen: HotCopper Wire Podcast 014 – Abu Dhabi wants to buy our 'true' oil and gas gem

ASX Market Close: Middle East War rattles investors | June 23, 2025

Markets were expecting Trump to bomb Iran. It's just another new normal

Uranium ignites: Is this the start of a supercycle?

Featured News

Featured News