Pan-Asia Catalysts/Events, Quiddity Advisors

Travis Lundy

Pan-Asia Catalysts/Events

Quiddity Advisors

Index Rebalance

<ul>
<li>On Friday 22 August, the Hang Seng Index team announced the changes to the Hang Seng Technology Index for the September 2025 rebalance.</li>
<li>Team Quiddity had one low conviction ADD/DEL pair "predicted" but there were no name changes announced. </li>
<li>
<a href="https://www.smartkarma.com/entities/horizon-robotics-inc" target="_blank" data-smartkarma-citation="entities:35637:1" rel="noopener">Horizon Robotics (9660 HK)</a> is a big FAF upweight, as expected. There are other small changes and big capping/re-capping moves. We see US$3.9bn to trade.</li>
</ul>


On Friday 22 August, the Hang Seng Index team announced the changes to the Hang Seng Technology Index for the September 2025 rebalance.
Team Quiddity had one low conviction ADD/DEL pair "predicted" but there were no name changes announced. 

Horizon Robotics (9660 HK) is a big FAF upweight, as expected. There are other small changes and big capping/re-capping moves. We see US$3.9bn to trade.


[Quiddity Index] Sep25 HSTECH Review Announced; No Name Changes, Big Flows

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 are no constituent changes for the <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 (HSTECH INDEX)</a> in September. However, there are float and capping changes.</li>
<li>Estimated one-way turnover is 6.3% leading to a round-trip trade of HK$31.1bn (US$4bn). There is plenty to buy in <a href="https://www.smartkarma.com/entities/horizon-robotics-inc" target="_blank" data-smartkarma-citation="entities:35637:1" rel="noopener">Horizon Robotics (9660 HK)</a>, <a href="https://www.smartkarma.com/entities/byd-co-ltd-h" target="_blank" data-smartkarma-citation="entities:20962:1" rel="noopener">BYD (1211 HK)</a> and <a href="https://www.smartkarma.com/entities/meituan" target="_blank" data-smartkarma-citation="entities:26970:1" rel="noopener">Meituan (3690 HK)</a>. </li>
<li>Short interest is elevated in some of the stocks with large flows and shorts could be active in the stocks over the next couple of weeks.</li>
</ul>


There are no constituent changes for the Hang Seng TECH Index (HSTECH INDEX) in September. However, there are float and capping changes.
Estimated one-way turnover is 6.3% leading to a round-trip trade of HK$31.1bn (US$4bn). There is plenty to buy in Horizon Robotics (9660 HK), BYD (1211 HK) and Meituan (3690 HK). 
Short interest is elevated in some of the stocks with large flows and shorts could be active in the stocks over the next couple of weeks.


HSTECH Index Rebalance: No Constituent Changes; Float/Capping Changes Lead to US$4bn Trade

<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

<ul>
<li>The Hang Seng Index is the main benchmark index for Hong Kong stocks. It follows a highly-subjective selection process which makes it difficult to predict index changes.</li>
<li>In this insight, we take a look at a group of names with reasonably high likelihood of being involved in index changes during the next review in September 2025.</li>
<li>The index changes are expected to be confirmed on 22nd August 2025.</li>
</ul>


The Hang Seng Index is the main benchmark index for Hong Kong stocks. It follows a highly-subjective selection process which makes it difficult to predict index changes.
In this insight, we take a look at a group of names with reasonably high likelihood of being involved in index changes during the next review in September 2025.
The index changes are expected to be confirmed on 22nd August 2025.


Quiddity Leaderboard Hang Seng Index Sep25: BeOne, TME, and Pop Mart Among Our Top Picks

<ul>
<li>The Hang Seng Internet &amp; IT (HSIII) index represents the top 30 stocks related to internet and information technology businesses listed in Hong Kong (HKEX).</li>
<li>We see three ADDs and three DELs and one float percentage revision which could collectively trigger roughly US$428mn in one-way index flows in September 2025.</li>
<li>The index changes will be announced after the close on Friday 22nd August 2025.</li>
</ul>


The Hang Seng Internet &amp; IT (HSIII) index represents the top 30 stocks related to internet and information technology businesses listed in Hong Kong (HKEX).
We see three ADDs and three DELs and one float percentage revision which could collectively trigger roughly US$428mn in one-way index flows in September 2025.
The index changes will be announced after the close on Friday 22nd August 2025.


Quiddity Leaderboard HSIII Sep25: Announcement This Week; 3 Changes Likely

China

Horizon Robotics, Inc. offers technology services. The Company develops advanced driver assistance systems, autonomous driving solutions, and other for passenger vehicles. Horizon Robotics provides its services throughout Hong Kong.

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Horizon Robotics (9660 HK)

[Quiddity Index] Sep25 HSTECH Review Announced; No Name Changes, Big Flows

The Hang Seng Technology Index review was announced on 22 August after the close. No name changes but nearly $3.9bn to trade with capping, re...

Travis Lundy

HSTECH Index Rebalance: No Constituent Changes; Float/Capping Changes Lead to US$4bn Trade

No constituent changes, but some large FAF/capping changes. Estimated one-way turnover is 6.3% and round-trip trade is US$4bn. Large inflows for...

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 Index Sep25: BeOne, TME, and Pop Mart Among Our Top Picks

The official index change results for the Hang Seng index Sep25 review will be announced publicly on Friday (after market close). This might be a...

Janaghan Jeyakumar, CFA

Quiddity Leaderboard HSIII Sep25: Announcement This Week; 3 Changes Likely

Expected DEL Netdragon is down 7% vs peers since 15th May. However, there is significant volume buildup. The expectations of an HSIII deletion...

Janaghan Jeyakumar, CFA

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