Index Rebal/Special Situations, Quiddity Advisors

Janaghan Jeyakumar, CFA

Index Rebal/Special Situations

Quiddity Advisors

Pan-Asia Catalysts/Events

Index Rebalance

Shanghai Haohai Biological Tec / Index Rebalance

Shanghai Haohai Biological Tec (688366 CH)

<ul>
<li>The December 2025 index review results for the STAR 50 and STAR 100 indices were announced after market close on Friday 28th November 2025.</li>
<li>There will be two changes for the STAR 50 index and eight changes for the STAR 100 index.</li>
<li>We expect one-way flows of approximately US$1.4bn and US$516mn for the STAR 50 and STAR 100 index rebal events, respectively.</li>
</ul>


The December 2025 index review results for the STAR 50 and STAR 100 indices were announced after market close on Friday 28th November 2025.
There will be two changes for the STAR 50 index and eight changes for the STAR 100 index.
We expect one-way flows of approximately US$1.4bn and US$516mn for the STAR 50 and STAR 100 index rebal events, respectively.


Quiddity STAR 50/100 Dec25 Results: 19/20 Changes Correctly Predicted; ~US$2bn Combined One-Way Flow

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

Dawning Information Industry C / Index Rebalance

Dawning Information Industry C (603019 CH)

<ul>
<li>There are 4 constituent changes for the <a href="https://www.smartkarma.com/entities/shanghai-stock-exchange-sse-50-a-share-index" target="_blank" data-smartkarma-citation="entities:31073:1" rel="noopener">SSE50 Index (SSE50 INDEX)</a> that will be implemented at the close on 12 December.</li>
<li>
<a href="https://www.smartkarma.com/entities/dawning-information-industry-c" target="_blank" data-smartkarma-citation="entities:25380:1" rel="noopener">Dawning Information Industry C (603019 CH)</a> is a surprise add given the upcoming merger with <a href="https://www.smartkarma.com/entities/hygon-information-technology-c" target="_blank" data-smartkarma-citation="entities:36366:1" rel="noopener">Hygon Information Technology C (688041 CH)</a>. </li>
<li>The <a href="https://www.smartkarma.com/entities/shanghai-stock-exchange-sse-50-a-share-index" target="_blank" data-smartkarma-citation="entities:31073:1" rel="noopener">SSE50 Index</a> adds have underperformed the deletes over the last couple of months and there could be outperformance from here as positioning builds ahead of the implementation of the changes.</li>
</ul>


There are 4 constituent changes for the SSE50 Index (SSE50 INDEX) that will be implemented at the close on 12 December.

Dawning Information Industry C (603019 CH) is a surprise add given the upcoming merger with Hygon Information Technology C (688041 CH). 
The SSE50 Index adds have underperformed the deletes over the last couple of months and there could be outperformance from here as positioning builds ahead of the implementation of the changes.


SSE50 Index Rebalance: 4 Changes a Side & US$2.2bn Trade

Verisilicon Microelectronics S / Index Rebalance

Verisilicon Microelectronics S (688521 CH)

<ul>
<li>There could be one change for the CNI Semiconductor Chips Index with <a href="https://www.smartkarma.com/entities/verisilicon-microelectronics-s" target="_blank" data-smartkarma-citation="entities:32183:1" rel="noopener">Verisilicon Microelectronics S (688521 CH)</a> replacing <a href="https://www.smartkarma.com/entities/tianshui-huatian-technolog-a" target="_blank" data-smartkarma-citation="entities:20708:1" rel="noopener">Tianshui Huatian Technology Co, Ltd. (002185 CH)</a>. </li>
<li>Passive trackers will need to buy 0.5x ADV in <a href="https://www.smartkarma.com/entities/verisilicon-microelectronics-s" target="_blank" data-smartkarma-citation="entities:32183:1" rel="noopener">Verisilicon Microelectronics S (688521 CH)</a> and sell 0.4x ADV in <a href="https://www.smartkarma.com/entities/tianshui-huatian-technolog-a" target="_blank" data-smartkarma-citation="entities:20708:1" rel="noopener">Tianshui Huatian Technology Co, Ltd. (002185 CH)</a>. </li>
<li>There will be large selling in <a href="https://www.smartkarma.com/entities/cambricon-technologies-corp-lt" target="_blank" data-smartkarma-citation="entities:31068:1" rel="noopener">Cambricon Technologies Lt (688256 CH)</a> due to capping while there will be smaller inflows for the other index constituents.</li>
</ul>


There could be one change for the CNI Semiconductor Chips Index with Verisilicon Microelectronics S (688521 CH) replacing Tianshui Huatian Technology Co, Ltd. (002185 CH). 
Passive trackers will need to buy 0.5x ADV in Verisilicon Microelectronics S (688521 CH) and sell 0.4x ADV in Tianshui Huatian Technology Co, Ltd. (002185 CH). 
There will be large selling in Cambricon Technologies Lt (688256 CH) due to capping while there will be smaller inflows for the other index constituents.


CNI Semiconductor Chips Index Rebalance Preview: One Set of Changes in December

<ul>
<li>There could be 1 constituent change for the STAR Chip Index at the December rebalance. There will also be a few capping changes.</li>
<li>Estimated one-way turnover is 2.3% resulting in a round-trip trade of CNY 2.5bn (US$352m). Passives need to trade between 0.3-0.4x ADV in the potential changes.</li>
<li>The forecast add and delete will have same-way flows from passive trackers of other indices and that will increase the impact on the stocks.</li>
</ul>


There could be 1 constituent change for the STAR Chip Index at the December rebalance. There will also be a few capping changes.
Estimated one-way turnover is 2.3% resulting in a round-trip trade of CNY 2.5bn (US$352m). Passives need to trade between 0.3-0.4x ADV in the potential changes.
The forecast add and delete will have same-way flows from passive trackers of other indices and that will increase the impact on the stocks.


STAR Chip Index Rebalance Preview: One Change for December

China Northern Rare Earth Group High-Tech / Index Rebalance

China Northern Rare Earth Group High-Tech (600111 CH)

China Northern Rare Earth Group High-Tech

<ul>
<li>With the review period complete, there are 6 non-constituents in direct inclusion zone and 4 current constituents in direct deletion zone. However, as usual, there will be discretion used.</li>
<li>4 changes result in a one-way turnover of 4%, leading to a round-trip trade of CNY 17bn (US$2.4bn). Index arb balances will increase the impact on the stocks.</li>
<li>The index committee has used discretion in selecting the index adds and deletes and that could continue to be the case at this review too.</li>
</ul>


With the review period complete, there are 6 non-constituents in direct inclusion zone and 4 current constituents in direct deletion zone. However, as usual, there will be discretion used.
4 changes result in a one-way turnover of 4%, leading to a round-trip trade of CNY 17bn (US$2.4bn). Index arb balances will increase the impact on the stocks.
The index committee has used discretion in selecting the index adds and deletes and that could continue to be the case at this review too.


SSE50 Index Rebalance Preview: 4 Potential Changes in December

China

Hygon Information Technology Co., Ltd. manufactures and distributes computer components. The Company produces high end processors, deep computing processors, accelerators, calculator chips, and other related products. Hygon Information Technology markets its products worldwide.

Hygon Information Technology C (688041 CH)

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Hygon Information Technology C (688041 CH)

Quiddity STAR 50/100 Dec25 Results: 19/20 Changes Correctly Predicted; ~US$2bn Combined One-Way Flow

We correctly predicted 19 out of 20 confirmed index changes. All of the ADDs/DELs except for STAR 100 DEL Shanghai Haohai Biological Tec (688366...

Janaghan Jeyakumar, CFA

SSE50 Index Rebalance: 4 Changes a Side & US$2.2bn Trade

There are 4 changes for the SSE50 Index in Dec. Dawning is the surprise addition and could move closer to the merger ratio implied price. Estimated...

Brian Freitas

CNI Semiconductor Chips Index Rebalance Preview: One Set of Changes in December

Verisilicon could replace Tianshui Huatian in the index in Dec. Verisilicon is an expected add to a few other indices at the same time and flow...

Brian Freitas

STAR Chip Index Rebalance Preview: One Change for December

Giantec Semi could replace Grandit in the index in Dec. There will be capping changes for 3 of the large index weights. Estimated one-way turnover...

Brian Freitas

SSE50 Index Rebalance Preview: 4 Potential Changes in December

There could be 4 changes for the index in Dec. The index committee has used discretion in the past and that is likely to continue. One-way turnover...

Brian Freitas

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