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 are 61 adds and 15 deletes for the Hang Seng Composite Index (HSCI) at the September rebalance to take the number of index constituents up to 580.</li>
<li>Of the 61 HSCI inclusions, 6 are already a part of StockConnect. 54 stocks will be added from the open 7 September. All 15 deletion will be removed from StockConnect.</li>
<li>Stocks that are expected to be added to Southbound Stock Connect have massively outperformed stocks that are expected to be removed from Southbound Stock Connect over the last 3 weeks.</li>
</ul>


There are 61 adds and 15 deletes for the Hang Seng Composite Index (HSCI) at the September rebalance to take the number of index constituents up to 580.
Of the 61 HSCI inclusions, 6 are already a part of StockConnect. 54 stocks will be added from the open 7 September. All 15 deletion will be removed from StockConnect.
Stocks that are expected to be added to Southbound Stock Connect have massively outperformed stocks that are expected to be removed from Southbound Stock Connect over the last 3 weeks.


HSCI Index Rebalance: 61 Adds, 15 Deletes, Changes to Southbound Stock Connect & BIG Outperformance

Asia Pac ECM and Index Rebal, Shenton Research

Ke Yan, CFA, FRM

Asia Pac ECM and Index Rebal

Asia Pac IPO & Placement Research, China Biotech

Shenton Research

Shenton Research is an independent Asia Pacific equity specialist. Our quantitative research covers index rebalancing flows, alongside exchange data analytics accross Asia Pacific. On the equity capital markets side, we focus on Asia Pacific ECM, especially biotech and TMT. Our lead analyst is frequently cited by international media.

<ul>
<li>The September 2026 HSCI review adds 53 names to southbound Connect, 49 new and 4 returning, and removes 15, all effective 7 Sep 2026.</li>
<li>The announced list ran wider than our forecast. 33 of our 36 ADD calls and 14 of 25 DELETE calls were announced.</li>
<li>Current ADDs rose into the announcement and DELETEs fell. Historically, ADD-NEWs outperformed ADD-REJOINs over the bridge, while DELETEs fell further after announcement.</li>
</ul>


The September 2026 HSCI review adds 53 names to southbound Connect, 49 new and 4 returning, and removes 15, all effective 7 Sep 2026.
The announced list ran wider than our forecast. 33 of our 36 ADD calls and 14 of 25 DELETE calls were announced.
Current ADDs rose into the announcement and DELETEs fell. Historically, ADD-NEWs outperformed ADD-REJOINs over the bridge, while DELETEs fell further after announcement.


HSCI / HK Connect Sep 2026 Rebalance: Post-Announcement Positioning

<ul>
<li>We screen our HSCI September 2026 review candidates for southbound Connect action, with 36 Connect ADDs and 25 DELETEs.</li>
<li>ADD candidates split into 31 ADD-NEW and 5 ADD-REJOIN, with one WVR name deferred and seven A+H names already in Connect.</li>
<li>DELETE candidates are 23 MV cases and 2 velocity cases, after one A+H name is exempt from Connect deletion.</li>
</ul>


We screen our HSCI September 2026 review candidates for southbound Connect action, with 36 Connect ADDs and 25 DELETEs.
ADD candidates split into 31 ADD-NEW and 5 ADD-REJOIN, with one WVR name deferred and seven A+H names already in Connect.
DELETE candidates are 23 MV cases and 2 velocity cases, after one A+H name is exempt from Connect deletion.


HSCI / HK Connect Sep 2026 Inclusion Forecast and Positioning

Quantitative Analysis

<ul>
<li>We analyze the weekly Hong Kong Connect flows with our data engine for holding position as of July 31st.</li>
<li>The top stocks by inflows and outflows were tabulated for all market, HSCEI, mid cap and s/mid cap groups.</li>
<li>We highlight flows for Alibaba, Smic, Xiaomi, Knowledge Atlas, Yofc, Kingboard Hldg, CCB, J&amp;T Express, China Hongqiao, China Mobile.</li>
</ul>


We analyze the weekly Hong Kong Connect flows with our data engine for holding position as of July 31st.
The top stocks by inflows and outflows were tabulated for all market, HSCEI, mid cap and s/mid cap groups.
We highlight flows for Alibaba, Smic, Xiaomi, Knowledge Atlas, Yofc, Kingboard Hldg, CCB, J&amp;T Express, China Hongqiao, China Mobile.


HK Connect Flows Weekly (Jul 31st): Alibaba, Smic, Xiaomi, Knowledge Atlas, Yofc, Kingboard Hldg

<ul>
<li>We screen HK stocks ahead of the HSCI September 2026 half-yearly review, with 44 ADD candidates and 26 DELETE candidates.</li>
<li>ADD candidates are mostly new listings and prior constituents, including seven A+H names already in Connect.</li>
<li>DELETE candidates include 21 MV DELETEs, three retention-line borderline names, and two velocity cases.</li>
</ul>


We screen HK stocks ahead of the HSCI September 2026 half-yearly review, with 44 ADD candidates and 26 DELETE candidates.
ADD candidates are mostly new listings and prior constituents, including seven A+H names already in Connect.
DELETE candidates include 21 MV DELETEs, three retention-line borderline names, and two velocity cases.


HSCI / HK Connect Sep 2026 Rebalance Forecast

China

Yidu Tech is an investment holding company that provides healthcare solutions built on big data and artificial intelligence (AI) technologies. It focuses on AI-driven healthcare transformation, developing professional, efficient, precise, and accessible AI products and solutions for the healthcare industry. The company was founded in 2014 and is headquartered in Beijing, China.

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Yidu Tech (2158 HK)

HSCI Index Rebalance: 61 Adds, 15 Deletes, Changes to Southbound Stock Connect & BIG Outperformance

There are 61 adds and 15 deletes for the HSCI in September. For Stock Connect, we expect 54 adds and 15 deletes. The forecast Connect adds have...

Brian Freitas

HSCI / HK Connect Sep 2026 Rebalance: Post-Announcement Positioning

HSIL announced the September review result on 21 Aug 2026 after market close. We forecast 53 southbound Connect ADDs and 15 DELETEs. We review the...

Ke Yan, CFA, FRM

HSCI / HK Connect Sep 2026 Inclusion Forecast and Positioning

We expect 36 southbound Connect ADDs, 31 new and 5 returning, and 25 DELETEs from the current Connect list at the HSCI September review, effective...

Ke Yan, CFA, FRM

HK Connect Flows Weekly (Jul 31st): Alibaba, Smic, Xiaomi, Knowledge Atlas, Yofc, Kingboard Hldg

We analyzed southbound Hong Kong connect flows in the past week and highlighted flows for Alibaba, Smic, Xiaomi, Knowledge Atlas, Yofc, Kingboard...

Ke Yan, CFA, FRM

HSCI / HK Connect Sep 2026 Rebalance Forecast

We forecast 44 ADD candidates and 26 DELETE candidates for the HSCI September review, with the announcement expected on 21 Aug 2026.

Ke Yan, CFA, FRM

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