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

Index Rebalance

<ul>
<li>There is 1 add and 21 deletions for the Hang Seng Biotech Index (HSHKBIO Index) at the September rebalance.</li>
<li>Estimated one-way turnover at the rebalance is 11.25% resulting in a round-trip trade of HK$1.77bn (US$226m).</li>
<li>The deletes have underperformed the HSHKBIO Index since the start of the year with the gap opening up over the last two months following the announcement of the methodology change.</li>
</ul>


There is 1 add and 21 deletions for the Hang Seng Biotech Index (HSHKBIO Index) at the September rebalance.
Estimated one-way turnover at the rebalance is 11.25% resulting in a round-trip trade of HK$1.77bn (US$226m).
The deletes have underperformed the HSHKBIO Index since the start of the year with the gap opening up over the last two months following the announcement of the methodology change.


Hang Seng Biotech Index Rebalance: 1 Add & 21 Deletes as Methodology Changes

<ul>
<li>Hang Seng Indexes announces changes to 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</a>, <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</a>, <a href="https://www.smartkarma.com/entities/hang-seng-tech-index" target="_blank" data-smartkarma-citation="entities:31367:1" rel="noopener">Hang Seng TECH Index</a>, HSIII Index, HSHKBIO Index and HSCI Index post market close tomorrow.</li>
<li>The net round-trip trade across the stocks is estimated to be HK$54.3bn (US$6.9bn) with big impact in a lot of names.</li>
<li>The largest inflows will be in <a href="https://www.smartkarma.com/entities/geely-automobile-holdings-ltd" target="_blank" data-smartkarma-citation="entities:127:1" rel="noopener">Geely Auto</a> if added to the <a href="https://www.smartkarma.com/entities/hang-seng-tech-index" target="_blank" data-smartkarma-citation="entities:31367:1" rel="noopener">HSTECH</a>, <a href="https://www.smartkarma.com/entities/pop-mart-international-group-l" target="_blank" data-smartkarma-citation="entities:29016:1" rel="noopener">Pop Mart</a> if added to the <a href="https://www.smartkarma.com/entities/hang-seng-china-enterprises-index" target="_blank" data-smartkarma-citation="entities:22900:1" rel="noopener">HSCEI</a> and <a href="https://www.smartkarma.com/entities/hong-kong-hang-seng-index" target="_blank" data-smartkarma-citation="entities:22899:1" rel="noopener">HSI</a>, and <a href="https://www.smartkarma.com/entities/horizon-robotics-inc" target="_blank" data-smartkarma-citation="entities:35637:1" rel="noopener">Horizon Robotics</a> due to a FAF increase.</li>
</ul>


Hang Seng Indexes announces changes to the Hang Seng Index, Hang Seng China Enterprises Index, Hang Seng TECH Index, HSIII Index, HSHKBIO Index and HSCI Index post market close tomorrow.
The net round-trip trade across the stocks is estimated to be HK$54.3bn (US$6.9bn) with big impact in a lot of names.
The largest inflows will be in Geely Auto if added to the HSTECH, Pop Mart if added to the HSCEI and HSI, and Horizon Robotics due to a FAF increase.


Hang Seng Indexes: Announcement Tomorrow; Potential Changes & Updated Flows

Index Rebal Trades & Special Situations, Quiddity Advisors

Janaghan Jeyakumar, CFA

Index Rebal Trades & Special Situations

Quiddity Advisors

Pan-Asia Catalysts/Events

<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!

<ul>
<li>The Hang Seng Biotech index (HSHKBIO) represents the 50 largest biotech companies listed in Hong Kong (HKEX).</li>
<li>In this insight, we take a look at the potential index changes and the resultant capping flows for the HSHKBIO index rebal event in September 2025.</li>
<li>Based on the latest data, we see three ADDs and three DELs.</li>
</ul>


The Hang Seng Biotech index (HSHKBIO) represents the 50 largest biotech companies listed in Hong Kong (HKEX).
In this insight, we take a look at the potential index changes and the resultant capping flows for the HSHKBIO index rebal event in September 2025.
Based on the latest data, we see three ADDs and three DELs.


Quiddity Leaderboard Hang Seng Biotech Sep25: Three Changes Likely + One Intra-Review Change

<ul>
<li>There are 35 adds and 28 deletes for the Hang Seng Composite Index (HSCI) at the March rebalance to take the number of index constituents up to 527.</li>
<li>We expect 29 of the 35 inclusions to the HSCI will be added to Stock Connect, while 20 of the 28 HSCI deletions will be removed from Southbound Stock Connect.</li>
<li>19 stocks could be deleted from Stock Connect only since their average market cap has dropped below HK$5bn- unless the new threshold of HK$4bn is approved in the next week.</li>
</ul>


There are 35 adds and 28 deletes for the Hang Seng Composite Index (HSCI) at the March rebalance to take the number of index constituents up to 527.
We expect 29 of the 35 inclusions to the HSCI will be added to Stock Connect, while 20 of the 28 HSCI deletions will be removed from Southbound Stock Connect.
19 stocks could be deleted from Stock Connect only since their average market cap has dropped below HK$5bn- unless the new threshold of HK$4bn is approved in the next week.


HSCI Index Rebalance: 35 Adds, 28 Deletes & Changes to Southbound Stock Connect

China

Shandong BoAn Biotechnology Co., Ltd. operates as a fully-integrated biopharmaceutical company. The Company specializes in the research and development, manufacturing and, commercialization of therapeutic antibodies, which are mainly focused on key therapeutic areas including oncology, metabolism, autoimmunity, and ophthalmology.

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Shandong BoAn Biotechnology (6955 HK)

Hang Seng Biotech Index Rebalance: 1 Add & 21 Deletes as Methodology Changes

There is 1 add and 21 deletes for the HSHKBIO in Sep. Couple of surprises. Estimated one-way turnover at the rebalance is 11.25% resulting in a...

Brian Freitas

Hang Seng Indexes: Announcement Tomorrow; Potential Changes & Updated Flows

Hang Seng announces after market close on Friday. The net round-trip trade across the stocks is estimated at HK$54.3bn. There is positioning in the...

Brian Freitas

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

Quiddity Leaderboard Hang Seng Biotech Sep25: Three Changes Likely + One Intra-Review Change

Index member Yichang HEC Changjiang Pharma (1558 HK) is involved in a takeover situation which is expected to complete in 2Q 2025. This could...

Janaghan Jeyakumar, CFA

HSCI Index Rebalance: 35 Adds, 28 Deletes & Changes to Southbound Stock Connect

There are 35 adds & 28 deletes for the HSCI in March leading to 29 adds & 20 deletes for Stock Connect. 19 index constituents could be dropped from...

Brian Freitas

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