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>The September rebalance of the Hang Seng family of indices will use today's closing prices to cap the index constituent weights.  </li>
<li>The net round-trip trade across all stocks across the five indices is estimated at HK$57.55bn (US$7.4bn). There is size to trade in a lot of stocks.</li>
<li>
<a href="https://www.smartkarma.com/entities/alibaba-group-holding-ltd-d7b798e2-202d-4e01-9a1e-799e2ae8f0c7" target="_blank" data-smartkarma-citation="entities:28434:1" rel="noopener">Alibaba (9988 HK)</a> has flipped from a net buy to a net sell following its huge rally yesterday.</li>
</ul>


The September rebalance of the Hang Seng family of indices will use today's closing prices to cap the index constituent weights.  
The net round-trip trade across all stocks across the five indices is estimated at HK$57.55bn (US$7.4bn). There is size to trade in a lot of stocks.

Alibaba (9988 HK) has flipped from a net buy to a net sell following its huge rally yesterday.


HSI, HSCEI, HSTECH, HSIII Index Rebalance: US$7.4bn of Flows Post Capping (Sep 2025)

Pan-Asia Catalysts/Events, Quiddity Advisors

Travis Lundy

Pan-Asia Catalysts/Events

Quiddity Advisors

<ul>
<li>On Friday 22 August, the Hang Seng Index team announced the changes to the Hang Seng Internet and IT Index for the September 2025 rebalance.</li>
<li>There are 3 ADDs and 3 DELs. We predicted 2/3 ADDs and 3/3 DELs correctly. But Funding and FAF Re-weight/Capping flows are bigger than the ADD/DEL flows.</li>
<li>Then on Monday 25 August, the index provider announced a capping methodology change. Not much changes, but flows increase from US$850mm to US$1bn+. Tables and spreadsheets amended.</li>
</ul>


On Friday 22 August, the Hang Seng Index team announced the changes to the Hang Seng Internet and IT Index for the September 2025 rebalance.
There are 3 ADDs and 3 DELs. We predicted 2/3 ADDs and 3/3 DELs correctly. But Funding and FAF Re-weight/Capping flows are bigger than the ADD/DEL flows.
Then on Monday 25 August, the index provider announced a capping methodology change. Not much changes, but flows increase from US$850mm to US$1bn+. Tables and spreadsheets amended.


[Quiddity Index] Sep25 HS Internet & IT Index Review; Capping Methodology Changes, Flows 20% Higher

<ul>
<li>Last evening, Hang Seng announced a methodology change for the Hang Seng Internet &amp; Information Technology Index (HSIII Index) with implementation in two phases.</li>
<li>The capping methodology will be updated at the September rebalance and the turnover and sector requirements will be updated at the December rebalance.</li>
<li>The updated capping scheme increases turnover and flow in September, while there could be one constituent change for the index at the December rebalance.</li>
</ul>


Last evening, Hang Seng announced a methodology change for the Hang Seng Internet &amp; Information Technology Index (HSIII Index) with implementation in two phases.
The capping methodology will be updated at the September rebalance and the turnover and sector requirements will be updated at the December rebalance.
The updated capping scheme increases turnover and flow in September, while there could be one constituent change for the index at the December rebalance.


Hang Seng Internet & IT Index (HSIII): Methodology Change & Impact

<ul>
<li>On Friday 22 August, the Hang Seng Index team announced the changes to the Hang Seng Internet and IT Index for the September 2025 rebalance.</li>
<li>There are 3 ADDs and 3 DELs. We predicted 2/3 ADDs and 3/3 DELs correctly. </li>
<li>The funding flows and FAF re-weight flows are bigger than the ADD/DEL flows but there should be ~US$850mm to trade.</li>
</ul>


On Friday 22 August, the Hang Seng Index team announced the changes to the Hang Seng Internet and IT Index for the September 2025 rebalance.
There are 3 ADDs and 3 DELs. We predicted 2/3 ADDs and 3/3 DELs correctly. 
The funding flows and FAF re-weight flows are bigger than the ADD/DEL flows but there should be ~US$850mm to trade.


[Quiddity Index] Sep25 HS Internet & IT Index Review; Funding Flows Dominate in $850mm Trade

<ul>
<li>There will be 3 changes for the Hang Seng Internet &amp; Information Technology Index (HSIII Index) at the September rebalance. </li>
<li>Estimated one-way turnover at the rebalance is 10.3% resulting in a round-trip trade of HK$6.4bn (US$818m). There are a bunch of stocks with over 0.5x ADV to trade.</li>
<li>There is a huge FAF increase for <a href="https://www.smartkarma.com/entities/horizon-robotics-inc" target="_blank" data-smartkarma-citation="entities:35637:1" rel="noopener">Horizon Robotics</a> and that will bring passive buying from the <a href="https://www.smartkarma.com/entities/hang-seng-tech-index" target="_blank" data-smartkarma-citation="entities:31367:1" rel="noopener">HSTECH</a> trackers too. The stock is being added to a global index on Tuesday.</li>
</ul>


There will be 3 changes for the Hang Seng Internet &amp; Information Technology Index (HSIII Index) at the September rebalance. 
Estimated one-way turnover at the rebalance is 10.3% resulting in a round-trip trade of HK$6.4bn (US$818m). There are a bunch of stocks with over 0.5x ADV to trade.
There is a huge FAF increase for Horizon Robotics and that will bring passive buying from the HSTECH trackers too. The stock is being added to a global index on Tuesday.


Hang Seng Internet & IT Index (HSIII) Rebalance: 3 Changes; Big FAF Increase for Horizon Robotics

Hong Kong

NetDragon Websoft, Inc. develops online internet games. The Company offers tracks player behaviour and purchasing patterns to design games that cater to their customers' tastes. NetDragon Websoft operates worldwide.

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Netdragon Websoft (777 HK)

HSI, HSCEI, HSTECH, HSIII Index Rebalance: US$7.4bn of Flows Post Capping (Sep 2025)

The Sep rebalance of the HSI, HSCEI, HSTECH, HSIII, HSHKBIO indices will use today's closing prices for capping. The round-trip trade across the...

Brian Freitas

[Quiddity Index] Sep25 HS Internet & IT Index Review; Capping Methodology Changes, Flows 20% Higher

A day after the Hang Seng announced the results of the Sep 2025 review of the HS Internet and Info Tech Index, they changed the methodology. Flows...

Travis Lundy

Hang Seng Internet & IT Index (HSIII): Methodology Change & Impact

Changes to the capping scheme increase turnover and flow in September. Introduction of minimum turnover and expansion of the universe could lead to...

Brian Freitas

[Quiddity Index] Sep25 HS Internet & IT Index Review; Funding Flows Dominate in $850mm Trade

The Hang Seng Internet & InfoTech Index review was announced Friday 22 August. Final weights set on 2 Sep, rebal on 5 Sep. 3 ADDs 3 DELs, mostly...

Travis Lundy

Hang Seng Internet & IT Index (HSIII) Rebalance: 3 Changes; Big FAF Increase for Horizon Robotics

There are 3 changes for the HSIII in Sep. Big FAF increase for Horizon Robotics - a lot to trade in the stock over the next 2 weeks. Estimated 1...

Brian Freitas

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