Index Rebal Trades & Special Situations, Quiddity Advisors

Janaghan Jeyakumar, CFA

Index Rebal Trades & Special Situations

Quiddity Advisors

Pan-Asia Catalysts/Events

Index Rebalance

<ul>
<li>The Hang Seng Biotech Index (HSHKBIO) represents the largest biotech companies listed in Hong Kong (HKEX) from September 2025.</li>
<li>We expect 20 index constituents to face deletion in September 2025 rebal due to a recent change in index selection methodology.</li>
<li>The index changes will be announced after the close on Friday 22nd August 2025.</li>
</ul>


The Hang Seng Biotech Index (HSHKBIO) represents the largest biotech companies listed in Hong Kong (HKEX) from September 2025.
We expect 20 index constituents to face deletion in September 2025 rebal due to a recent change in index selection methodology.
The index changes will be announced after the close on Friday 22nd August 2025.


Quiddity Leaderboard Hang Seng Biotech Sep25: Announcement Soon; MANY DELs Likely!

IPOs and Catalysts/Events, Global Equity Research Ltd

Arun George

IPOs and Catalysts/Events

Uncompromised, Independent, Conflict-Free Research

Global Equity Research Ltd

Global Equity Research was started in 2017 by a group of experienced research professionals. It was founded on a passionate belief in the importance and the need for uncompromised, independent, conflict-free research. We aim to provide differentiated and actionable primary and bottom up fundamental research.

Event-Driven

Hangzhou Kangji Medical Instrument Co., Ltd. / Event-Driven

Hangzhou Kangji Medical Instrument Co., Ltd.

<ul>
<li>
<a href="https://www.smartkarma.com/entities/hangzhou-kangji-medical-instrument-co-ltd" target="_blank" data-smartkarma-citation="entities:28938:1" rel="noopener">Hangzhou Kangji Medical Instrument Co., Ltd. (9997 HK)</a> disclosed a preconditional privatisation from a consortium at HK$9.25, a 9.9% premium to last close and a 21.7% premium to the undisturbed price. </li>
<li>The precondition relates to SAMR approval. The key condition will be approval by at least 75% disinterested shareholders (&lt;10% of all disinterested shareholders' rejection). The offer is final. </li>
<li>The scheme vote risk is medium-to-high due to an unattractive offer, a blocking stake below the substantial disclosure threshold, unfavourable AGM voting patterns, and emerging retail opposition.</li>
</ul>



Hangzhou Kangji Medical Instrument Co., Ltd. (9997 HK) disclosed a preconditional privatisation from a consortium at HK$9.25, a 9.9% premium to last close and a 21.7% premium to the undisturbed price. 
The precondition relates to SAMR approval. The key condition will be approval by at least 75% disinterested shareholders (&lt;10% of all disinterested shareholders' rejection). The offer is final. 
The scheme vote risk is medium-to-high due to an unattractive offer, a blocking stake below the substantial disclosure threshold, unfavourable AGM voting patterns, and emerging retail opposition.


Kangji Medical (9997 HK): Consortium’s Light Preconditional Scheme Offer

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>A methodology change for the Hang Seng Biotech Index (HSHKBIO Index) will result in 20 deletions at the close of trading on 5 September.</li>
<li>Estimated one-way turnover at the rebalance is 9.5% resulting in a round-trip trade of HK$1.3bn (US$162m). Passive trackers need to sell between 0.05-1x ADV in the deletes.</li>
<li>The forecast deletes have underperformed the other index constituents since the start of the year but there has been little movement since the announcement of the methodology change.</li>
</ul>


A methodology change for the Hang Seng Biotech Index (HSHKBIO Index) will result in 20 deletions at the close of trading on 5 September.
Estimated one-way turnover at the rebalance is 9.5% resulting in a round-trip trade of HK$1.3bn (US$162m). Passive trackers need to sell between 0.05-1x ADV in the deletes.
The forecast deletes have underperformed the other index constituents since the start of the year but there has been little movement since the announcement of the methodology change.


Hang Seng Biotech Index Rebalance Preview: Methodology Change Leads to 20 Deletions

<ul>
<li>The Hang Seng Biotech Index (HSHKBIO) will represent the 30 largest biotech companies listed in Hong Kong (HKEX) from September 2025.</li>
<li>Due to a methodology change for HSHKBIO announced in late-June 2025, 20 index constituents could face deletion in September 2025.</li>
<li>In this insight, we take a look at our final expectations for index changes and capping flows for HSHKBIO index rebal event in September 2025.</li>
</ul>


The Hang Seng Biotech Index (HSHKBIO) will represent the 30 largest biotech companies listed in Hong Kong (HKEX) from September 2025.
Due to a methodology change for HSHKBIO announced in late-June 2025, 20 index constituents could face deletion in September 2025.
In this insight, we take a look at our final expectations for index changes and capping flows for HSHKBIO index rebal event in September 2025.


Quiddity Leaderboard Hang Seng Biotech Sep25: 20 Deletions Likely Due to Major Methodology Change

HK/China Healthcare Analyst (ex-Fosun Pharma)

Xinyao (Criss) Wang

Equity Bottom-Up

<ul>
<li>The third batch of VBP results of the National TCM Patent Medicines were released. Some products experienced over 90% price reduction. The price decline of exclusive varieties was moderate.</li>
<li>The VBP results of cochlear implants and peripheral vascular stents were released. Both foreign and domestic companies participated in the VBP actively, hoping to increase market share in China. </li>
<li>The key is to see whether 2024 full-year performance can meet expectations, which is the bottom line for WuXi Bio. Without a definitive long-term logic, short-term trading is recommended.</li>
</ul>


The third batch of VBP results of the National TCM Patent Medicines were released. Some products experienced over 90% price reduction. The price decline of exclusive varieties was moderate.
The VBP results of cochlear implants and peripheral vascular stents were released. Both foreign and domestic companies participated in the VBP actively, hoping to increase market share in China. 
The key is to see whether 2024 full-year performance can meet expectations, which is the bottom line for WuXi Bio. Without a definitive long-term logic, short-term trading is recommended.


China Healthcare Weekly (Jan.5)-TCM VBP Update, Medical Device VBP Result Is Out, WuXi Bio's Outlook

China

Lifetech Scientific Corporation develops, manufactures and markets minimally invasive interventional medical devices for cardiovascular and peripheral vascular diseases and disorders.  The Company produces congenital heart defect occluders, vena cava filters, stent grafts, balloon catheters, and vascular plugs.

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Lifetech Scientific (1302 HK)

Quiddity Leaderboard Hang Seng Biotech Sep25: Announcement Soon; MANY DELs Likely!

There are 20 deletions expected due to drastic changes to the index selection methodology. These names have underperformed the index in the last...

Janaghan Jeyakumar, CFA

Kangji Medical (9997 HK): Consortium’s Light Preconditional Scheme Offer

The scheme vote risk is medium-to-high due to an unattractive offer, a blocking stake below the substantial disclosure threshold, unfavourable AGM...

Arun George

Hang Seng Biotech Index Rebalance Preview: Methodology Change Leads to 20 Deletions

A methodology change could lead to 20 deletions in Sep. Estimated one-way turnover at the rebalance is 9.5% resulting in a round-trip trade of...

Brian Freitas

Quiddity Leaderboard Hang Seng Biotech Sep25: 20 Deletions Likely Due to Major Methodology Change

A recent methodology change will result in a drop in constituent count from 50 to 30. This would trigger 20 deletions. These expected DELs could...

Janaghan Jeyakumar, CFA

China Healthcare Weekly (Jan.5)-TCM VBP Update, Medical Device VBP Result Is Out, WuXi Bio's Outlook

VBP result of TCM Patent Medicine is released. VBP of cochlear implant/peripheral vascular stent is good for companies. Only when Li Ge buys big...

Xinyao (Criss) Wang

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