Index Rebal/Special Situations, Quiddity Advisors

Janaghan Jeyakumar, CFA

Index Rebal/Special Situations

Quiddity Advisors

Pan-Asia Catalysts/Events

Index Rebalance

Clarity Pharmaceuticals Ltd / Index Rebalance

<ul>
<li>In this insight, we take a look at the potential index changes for ASX 200, 100, 50, and 20 in the run-up to the December 2025 index rebal event.</li>
<li>We expect two changes for ASX 50, two changes for ASX 100, and seven changes for ASX 200.</li>
<li>The official index changes will be announced after the close on Friday 5th December 2025.</li>
</ul>


In this insight, we take a look at the potential index changes for ASX 200, 100, 50, and 20 in the run-up to the December 2025 index rebal event.
We expect two changes for ASX 50, two changes for ASX 100, and seven changes for ASX 200.
The official index changes will be announced after the close on Friday 5th December 2025.


Quiddity Leaderboard ASX Dec25: Reference Period Ending Soon; Some Surprises Possible

Asia Pac ECM and Index Rebal, Shenton Research

Ke Yan, CFA, FRM

Asia Pac ECM and Index Rebal

Asia Pac IPO & Placement Research, China Biotech

DZT Research

DZT Research is an independent Asia Pacific equity specialist. Our quantitative research covers index rebalancing flows, alongside exchange data analytics accross Asia Pacific. On the equity capital markets side, we focus on Asia Pacific ECM, especially biotech and TMT. Our lead analyst is frequently cited by international media.

Quantitative Analysis

<ul>
<li>We analyzed the changes in short interest of ASX Stocks as of Nov 14th (reported today). The aggregated short interest was USD27.1bn.</li>
<li>We tabulate league tables for top short by value and short as multiple of ADT, as well as weekly increases &amp; decreases in short value, short as multiple of ADT.</li>
<li>We highlight short interest changes in Northern Star Resources, Aristocrat Leisure, Sonic Healthcare, Super Retail, DroneShield.</li>
</ul>


We analyzed the changes in short interest of ASX Stocks as of Nov 14th (reported today). The aggregated short interest was USD27.1bn.
We tabulate league tables for top short by value and short as multiple of ADT, as well as weekly increases &amp; decreases in short value, short as multiple of ADT.
We highlight short interest changes in Northern Star Resources, Aristocrat Leisure, Sonic Healthcare, Super Retail, DroneShield.


ASX Short Interest Weekly (Nov 14th): Northern Star Resources, Aristocrat Leisure, Sonic Healthcare

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>There could be 2 changes each for the ASX50 and ASX100 indices and 7 changes 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> in December.</li>
<li>Passive trackers will need to trade a lot of stock in the forecast changes, with the impact being especially large for the changes to 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>. </li>
<li>The forecast adds have outperformed (and continue to outperform) the forecast deletes to the S&amp;P/ASX 100 Index and 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>. </li>
</ul>


There could be 2 changes each for the ASX50 and ASX100 indices and 7 changes for the S&amp;P/ASX 200 (AS51 INDEX) in December.
Passive trackers will need to trade a lot of stock in the forecast changes, with the impact being especially large for the changes to the S&amp;P/ASX 200 (AS51 INDEX). 
The forecast adds have outperformed (and continue to outperform) the forecast deletes to the S&amp;P/ASX 100 Index and the S&amp;P/ASX 200 (AS51 INDEX). 


S&P/​​​​​​​​​ASX Index Rebalance Preview (Dec 25): Changes Across Indices as Positioning Picks Up

<ul>
<li>We analyzed the changes in short interest of ASX Stocks as of Nov 7th (reported today). The aggregated short interest was USD26.6bn.</li>
<li>We tabulate league tables for top short by value and short as multiple of ADT, as well as weekly increases &amp; decreases in short value, short as multiple of ADT.</li>
<li>We highlight short interest changes in James Hardie Industries, Resmed Inc DRC, Charter Hall, Steadfast, Dexus Property.</li>
</ul>


We analyzed the changes in short interest of ASX Stocks as of Nov 7th (reported today). The aggregated short interest was USD26.6bn.
We tabulate league tables for top short by value and short as multiple of ADT, as well as weekly increases &amp; decreases in short value, short as multiple of ADT.
We highlight short interest changes in James Hardie Industries, Resmed Inc DRC, Charter Hall, Steadfast, Dexus Property.


ASX Short Interest Weekly (Nov 7th): James Hardie Industries, Resmed Inc DRC, Charter Hall

<ul>
<li>We analyzed the changes in short interest of ASX Stocks as of Oct 31st (reported today). The aggregated short interest was USD27.3bn.</li>
<li>We tabulate league tables for top short by value and short as multiple of ADT, as well as weekly increases &amp; decreases in short value, short as multiple of ADT.</li>
<li>We highlight short interest changes in CSL, Mineral Resources, Bluescope Steel, ALS, Vicinity Centres Re.</li>
</ul>


We analyzed the changes in short interest of ASX Stocks as of Oct 31st (reported today). The aggregated short interest was USD27.3bn.
We tabulate league tables for top short by value and short as multiple of ADT, as well as weekly increases &amp; decreases in short value, short as multiple of ADT.
We highlight short interest changes in CSL, Mineral Resources, Bluescope Steel, ALS, Vicinity Centres Re.


ASX Short Interest Weekly (Oct 31st): CSL, Mineral Resources, Bluescope Steel, ALS

Australia

IPH Limited is an intellectual property services firm. The Company offers a wide range of services for the protection, commercialisation, enforcement, and management of intellectual property. IPH provides these services across Australia, New Zealand, Papua New Guinea, the Pacific Islands, and Asia.

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IPH Ltd (IPH AU)

Quiddity Leaderboard ASX Dec25: Reference Period Ending Soon; Some Surprises Possible

We have revised our expectations for ASX 100 (please see discussion point below the insight). These are our final expectations for the December...

Janaghan Jeyakumar, CFA

ASX Short Interest Weekly (Nov 14th): Northern Star Resources, Aristocrat Leisure, Sonic Healthcare

We analyzed ASX short interest report for the past week and highlight short interest changes in Northern Star Resources, Aristocrat Leisure, Sonic...

Ke Yan, CFA, FRM

S&P/ASX Index Rebalance Preview (Dec 25): Changes Across Indices as Positioning Picks Up

There could be 22 changes across the ASX family in Dec. Plus passive buying in LNW due to a sole listing on the ASX. The adds have outperformed and...

Brian Freitas

ASX Short Interest Weekly (Nov 7th): James Hardie Industries, Resmed Inc DRC, Charter Hall

We analyzed ASX short interest report for the past week and highlight short interest changes in James Hardie Industries, Resmed Inc DRC, Charter...

Ke Yan, CFA, FRM

ASX Short Interest Weekly (Oct 31st): CSL, Mineral Resources, Bluescope Steel, ALS

We analyzed ASX short interest report for the past week and highlight short interest changes in CSL, Mineral Resources, Bluescope Steel, ALS,...

Ke Yan, CFA, FRM

Price Gauge

52-week Range

Market Cap (USDm)

P/E

Dividend (Yield)

Quiddity Leaderboard ASX Dec25: Reference Period Ending Soon; Some Surprises Possible

We have revised our expectations for ASX 100 (please see discussion point below the insight). These are our final expectations for the December...

Janaghan Jeyakumar, CFA

ASX Short Interest Weekly (Nov 14th): Northern Star Resources, Aristocrat Leisure, Sonic Healthcare

We analyzed ASX short interest report for the past week and highlight short interest changes in Northern Star Resources, Aristocrat Leisure, Sonic...

Ke Yan, CFA, FRM

S&P/​​​​​​​​​ASX Index Rebalance Preview (Dec 25): Changes Across Indices as Positioning Picks Up

There could be 22 changes across the ASX family in Dec. Plus passive buying in LNW due to a sole listing on the ASX. The adds have outperformed and...

Brian Freitas

ASX Short Interest Weekly (Nov 7th): James Hardie Industries, Resmed Inc DRC, Charter Hall

We analyzed ASX short interest report for the past week and highlight short interest changes in James Hardie Industries, Resmed Inc DRC, Charter...

Ke Yan, CFA, FRM

ASX Short Interest Weekly (Oct 31st): CSL, Mineral Resources, Bluescope Steel, ALS

We analyzed ASX short interest report for the past week and highlight short interest changes in CSL, Mineral Resources, Bluescope Steel, ALS,...

Ke Yan, CFA, FRM

S&P/ASX Index Rebalance Preview (Dec 25): Changes Across Indices as Positioning Picks Up