Derivatives and Quantitative Strategist

Gaudenz Schneider

Equity Derivatives

<ul>
<li>September brings heavy index rebalancing activity. <a href="https://www.smartkarma.com/entities/pop-mart-international-group-l" target="_blank" data-smartkarma-citation="entities:29016:1" rel="noopener">Pop Mart (9992 HK)</a> will join both the <a href="https://www.smartkarma.com/entities/hong-kong-hang-seng-index" target="_blank" data-smartkarma-citation="entities:22899:1" rel="noopener">Hang Seng Index (HSI INDEX)</a> and the <a href="https://www.smartkarma.com/entities/hang-seng-china-enterprises-index" target="_blank" data-smartkarma-citation="entities:22900:1" rel="noopener">Hang Seng China Enterprises Index (HSCEI INDEX)</a>.</li>
<li>
The Fed is widely expected to cut rates and Asia-Pac peers (BoJ, RBA, RBI) are also meeting.</li>
<li>
Why Read: Plan ahead and take into account known market events when making investment and trading decision.</li>
</ul>


September brings heavy index rebalancing activity. Pop Mart (9992 HK) will join both the Hang Seng Index (HSI INDEX) and the Hang Seng China Enterprises Index (HSCEI INDEX).

The Fed is widely expected to cut rates and Asia-Pac peers (BoJ, RBA, RBI) are also meeting.

Why Read: Plan ahead and take into account known market events when making investment and trading decision.


Index Changes and Rate Cuts: Key Events in September 2025

Index Rebal/Special Situations, Quiddity Advisors

Janaghan Jeyakumar, CFA

Index Rebal/Special Situations

Quiddity Advisors

Pan-Asia Catalysts/Events

Index Rebalance

<ul>
<li>A new selection methodology will be used for the ASX index family starting from the September 2025 index review. We first wrote about this a couple of months ago (<a href="https://www.smartkarma.com/insights/quiddity-leaderboard-asx-sep25-update-with-new-important-market-consultation-implications" target="_blank" rel="noopener">link</a>).</li>
<li>In this insight, we present our final expectations for ASX 300, 200, 100, 50, and 20 for the September 2025 index rebal event.</li>
<li>We expect one change for ASX 50, three changes for ASX 100, and six changes for ASX 200. Separately, we see 14 ADDs and 11 DELs for ASX 300.</li>
</ul>


A new selection methodology will be used for the ASX index family starting from the September 2025 index review. We first wrote about this a couple of months ago (link).
In this insight, we present our final expectations for ASX 300, 200, 100, 50, and 20 for the September 2025 index rebal event.
We expect one change for ASX 50, three changes for ASX 100, and six changes for ASX 200. Separately, we see 14 ADDs and 11 DELs for ASX 300.


Quiddity Leaderboard ASX Sep25: Methodology Change Confirmed; Good Performance; Final Expectations

Pan-Asia Index Rebalances/ Events/ Delta One, Periscope Analytics

Brian Freitas

Pan-Asia Index Rebalances/ Events/ Delta One

Periscope Analytics

Periscope Analytics focuses on event-driven trades across Asia Pacific and provides comprehensive, timely and systematic coverage of index changes to major Asia Pacific indices in a structured manner.

The analysis includes forecasted inclusions and exclusions to all major Asian indices that have significant amount of tracking assets, including estimates of passive buy/sell flow on the stocks. The service also provides commentary and impact of market consultations, ground rule changes, and other events (IPOs, spin-offs, M&A) that could lead to index changes and passive flow.

Periscope Analytics works with multi-strategy hedge funds, proprietary trading firms, stat arb trading groups and long-only investors that invest and trade in the Asia Pacific region with the data being used to trade index rebalances, avoid pre-positioning and passive flow, and to time entry into and exit from stocks.

Event-Driven Trades Across Asia Pacific

<ul>
<li>S&amp;P DJI have proposed methodology changes to the S&amp;P/ASX family of indices to enhance representativeness and more quickly reflect changing market conditions. The consultation conclusions could be announced next week.</li>
<li>The updated methodology could lead to 51 changes across the family of indices with implementation on 19 September. There will be a large impact on a number of stocks.</li>
<li>The forecast adds have outperformed the forecast deletes over the last several months and near-term performance has been spectacular for the <a href="https://www.smartkarma.com/entities/s-p-asx-200" target="_blank" data-smartkarma-citation="entities:22901:1" rel="noopener">S&amp;P/ASX 200 (AS51 INDEX)</a> and S&amp;P/ASX 300 Index changes.</li>
</ul>


S&amp;P DJI have proposed methodology changes to the S&amp;P/ASX family of indices to enhance representativeness and more quickly reflect changing market conditions. The consultation conclusions could be announced next week.
The updated methodology could lead to 51 changes across the family of indices with implementation on 19 September. There will be a large impact on a number of stocks.
The forecast adds have outperformed the forecast deletes over the last several months and near-term performance has been spectacular for the S&amp;P/ASX 200 (AS51 INDEX) and S&amp;P/ASX 300 Index changes.


S&P/​​​​​​​​​ASX Index Rebalance Preview (Sep 25): Potential Changes if Methodology Is Updated

<ul>
<li>In this insight, we take a look at the potential index changes for ASX 300, 200, 100, 50, and 20 in the run-up to the September 2025 index rebal event.</li>
<li>Currently, a market consultation is being conducted and there could be several significant changes made to the index selection process.</li>
<li>The official index changes will be announced after the close on Friday 5th September 2025.</li>
</ul>


In this insight, we take a look at the potential index changes for ASX 300, 200, 100, 50, and 20 in the run-up to the September 2025 index rebal event.
Currently, a market consultation is being conducted and there could be several significant changes made to the index selection process.
The official index changes will be announced after the close on Friday 5th September 2025.


Quiddity Leaderboard ASX Sep25: Exp ADDs Down Vs Exp DELs Since Methodology Change; Time to Reverse?

Financial News, Analysis and Data, FNArena

FNArena

Financial News, Analysis and Data

Online financial media company focused on Australian equities, with a global perspective

Equity Bottom-Up

<ul><li>In today's edition: -Ask FNArena -Review All-Weather Model Portfolio -Recent Updates On Expert Views -Best Buys & Conviction Calls</li></ul>

In today's edition: -Ask FNArena -Review All-Weather Model Portfolio -Recent Updates On Expert Views -Best Buys & Conviction Calls

Rudi's View: Bega Cheese, Cettire, Harvey Norman, Sigma, SiteMinder & More

Australia

Dalrymple Bay Infrastructure Limited provides infrastructure construction services. The Company offers port infrastructure and services for producers and consumers of coal exports. Dalrymple Bay Infrastructure serves clients in Australia.

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Dalrymple Bay Infrastructure L (DBI AU)

Index Changes and Rate Cuts: Key Events in September 2025

September packs in index rebalances, quarterly expiries, central bank calls, and Fed drama—keeping markets busy amid a light holiday calendar.

Gaudenz Schneider

Quiddity Leaderboard ASX Sep25: Methodology Change Confirmed; Good Performance; Final Expectations

We have revised our final expectations for the September 2025 index review due to the deletion of Adriatic Metals which was one of our expected...

Janaghan Jeyakumar, CFA

S&P/ASX Index Rebalance Preview (Sep 25): Potential Changes if Methodology Is Updated

The review period for the September rebalance is done and the proposals in the market consultation will be implemented. That means a lot of change...

Brian Freitas

Quiddity Leaderboard ASX Sep25: Exp ADDs Down Vs Exp DELs Since Methodology Change; Time to Reverse?

We believe the newly proposed methodology would be implemented during the September 2025 index review. The expected ADDs have been underperforming...

Janaghan Jeyakumar, CFA

Rudi's View: Bega Cheese, Cettire, Harvey Norman, Sigma, SiteMinder & More

In today's edition: -Ask FNArena -Review All-Weather Model Portfolio -Recent Updates On Expert Views -Best Buys & Conviction Calls

FNArena

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Index Changes and Rate Cuts: Key Events in September 2025

September packs in index rebalances, quarterly expiries, central bank calls, and Fed drama—keeping markets busy amid a light holiday calendar.

Gaudenz Schneider

Quiddity Leaderboard ASX Sep25: Methodology Change Confirmed; Good Performance; Final Expectations

We have revised our final expectations for the September 2025 index review due to the deletion of Adriatic Metals which was one of our expected...

Janaghan Jeyakumar, CFA

S&P/​​​​​​​​​ASX Index Rebalance Preview (Sep 25): Potential Changes if Methodology Is Updated

The review period for the September rebalance is done and the proposals in the market consultation will be implemented. That means a lot of change...

Brian Freitas

Quiddity Leaderboard ASX Sep25: Exp ADDs Down Vs Exp DELs Since Methodology Change; Time to Reverse?

We believe the newly proposed methodology would be implemented during the September 2025 index review. The expected ADDs have been underperforming...

Janaghan Jeyakumar, CFA

Rudi's View: Bega Cheese, Cettire, Harvey Norman, Sigma, SiteMinder & More

In today's edition: -Ask FNArena -Review All-Weather Model Portfolio -Recent Updates On Expert Views -Best Buys & Conviction Calls

FNArena

S&P/ASX Index Rebalance Preview (Sep 25): Potential Changes if Methodology Is Updated