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

DZT Research

DZT 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.

Index Rebalance

Xiamen Tungsten Co Ltd A / Index Rebalance

<ul>
<li>CSI 300 June 2026 added 19 stocks and deleted 19. With all post-implementation windows complete, we review current-cycle performance vs history.</li>
<li>ADDs rose broadly in the first implementation week. The historical fade read was offset by a stronger CSI 300 tape and tungsten-specific newsflow. Weeks 2 to 4 reversed the gains.</li>
<li>DELETEs fell in the first week and drifted lower in weeks 2 to 4. The direction matched history, and the losses were milder than in prior cycles.</li>
</ul>


CSI 300 June 2026 added 19 stocks and deleted 19. With all post-implementation windows complete, we review current-cycle performance vs history.
ADDs rose broadly in the first implementation week. The historical fade read was offset by a stronger CSI 300 tape and tungsten-specific newsflow. Weeks 2 to 4 reversed the gains.
DELETEs fell in the first week and drifted lower in weeks 2 to 4. The direction matched history, and the losses were milder than in prior cycles.


CSI 300 June 2026 Rebalance: Post-Implementation Review

Quantitative Analysis

<ul>
<li>We analysed the earning revision of component stocks of CSI 300 in the past month.</li>
<li>We tabulated stocks with the top impact on index's EPS, stocks' EPS revision, and revenue revision.</li>
<li>We highlighted EPS revision on INDUSTRIAL BANK, YANTAI JEREH OILFIELD SERVICES, XIAMEN TUNGSTEN, KUNLUN TECH, CHONGQING ZHIFEI BIOLOGICAL PRODUCTS, GIANT NETWORK, CHINA SHENHUA ENERGY, Xinjiang Daqo.</li>
</ul>


We analysed the earning revision of component stocks of CSI 300 in the past month.
We tabulated stocks with the top impact on index's EPS, stocks' EPS revision, and revenue revision.
We highlighted EPS revision on INDUSTRIAL BANK, YANTAI JEREH OILFIELD SERVICES, XIAMEN TUNGSTEN, KUNLUN TECH, CHONGQING ZHIFEI BIOLOGICAL PRODUCTS, GIANT NETWORK, CHINA SHENHUA ENERGY, Xinjiang Daqo.


CSI 300 Index Earning Revision (Jun): INDUSTRIAL BANK, YANTAI JEREH OILFIELD SERVICES, KUNLUN TECH

China Tungsten And Hightech Ma / Index Rebalance

China Tungsten And Hightech Ma (000657 CH)

<ul>
<li>CSI confirmed 19 ADDs and 19 DELETEs for the June 2026 rebalance, effective 15 Jun 2026.</li>
<li>ADD gains narrowed to seven positive-bridge names, led by Xiamen Tungsten and China Tungsten. DELETEs fell -4.4% on average.</li>
<li>Historical first-week outcomes were negative on average for both ADD and DELETE, but different subgroup recorded varied performance.</li>
</ul>


CSI confirmed 19 ADDs and 19 DELETEs for the June 2026 rebalance, effective 15 Jun 2026.
ADD gains narrowed to seven positive-bridge names, led by Xiamen Tungsten and China Tungsten. DELETEs fell -4.4% on average.
Historical first-week outcomes were negative on average for both ADD and DELETE, but different subgroup recorded varied performance.


CSI 300 June 2026 Rebalance: Pre-Implementation Update

<ul>
<li>CSI announced 19 ADDs and 19 DELETEs effective 15 Jun 2026, the largest cycle in our four-cycle reference set.</li>
<li>We reviewed rebalance stocks against four prior CSI 300 cycles and the completed pre-announcement setup.</li>
<li>The prior forecast captured the four strongest ADDs and six of the seven weakest DELETEs, with misses mainly in buffer-zone ADDs and retained-risk DELETEs.</li>
</ul>


CSI announced 19 ADDs and 19 DELETEs effective 15 Jun 2026, the largest cycle in our four-cycle reference set.
We reviewed rebalance stocks against four prior CSI 300 cycles and the completed pre-announcement setup.
The prior forecast captured the four strongest ADDs and six of the seven weakest DELETEs, with misses mainly in buffer-zone ADDs and retained-risk DELETEs.


CSI 300 June 2026 Rebalance: Post-Announcement Positioning

<ul>
<li>We analyzed the changes in margin trading positions of A-share stocks as of May 22nd. The aggregated net margin trading position is USD389,895m.</li>
<li>We tabulate league tables for top/bottom net long/short of margin trading by value, net margin buy as multiple of ADT.</li>
<li>We highlight net margin buy/sell changes in JIANGSU XINQUAN AUTOMOTIVE TRIM, LENS TECHNOLOGY, BOE, YUANJIE SEMI, ZHONGJI INNOLIGHT.</li>
</ul>


We analyzed the changes in margin trading positions of A-share stocks as of May 22nd. The aggregated net margin trading position is USD389,895m.
We tabulate league tables for top/bottom net long/short of margin trading by value, net margin buy as multiple of ADT.
We highlight net margin buy/sell changes in JIANGSU XINQUAN AUTOMOTIVE TRIM, LENS TECHNOLOGY, BOE, YUANJIE SEMI, ZHONGJI INNOLIGHT.


A-Share Margin Trading Weekly (May 22nd): JIANGSU XINQUAN AUTOMOTIVE TRIM, LENS TECHNOLOGY, BOE

China

Shenzhen Longsys Electronics Co., Ltd. manufactures and distributes digital storage products. The Company produces embedded storage products, portable storage devices, wireless storage devices, and other products. Shenzhen Longsys Electronics markets its products throughout China.

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Shenzhen Longsys Electronics (301308 CH)

CSI 300 June 2026 Rebalance: Post-Implementation Review

CSI 300 June 2026 rebalance has passed the first post-implementation month. We review what worked, what did not, and how current results compare...

Ke Yan, CFA, FRM

CSI 300 Index Earning Revision (Jun): INDUSTRIAL BANK, YANTAI JEREH OILFIELD SERVICES, KUNLUN TECH

We analyzed CSI 300's consensus for Jun 2026 and highlighted changes of EPS in INDUSTRIAL BANK (601166 CH), YANTAI JEREH OILFIELD SERVICES (002353...

Ke Yan, CFA, FRM

CSI 300 June 2026 Rebalance: Pre-Implementation Update

CSI 300 enters implementation on 15 Jun 2026. We update post-announcement stock performance and discuss implementation trades.

Ke Yan, CFA, FRM

CSI 300 June 2026 Rebalance: Post-Announcement Positioning

CSI 300 June 2026 post-announcement trading is live. ADD strength is concentrated in a few forecast names. The opening gap should set chase and...

Ke Yan, CFA, FRM

Price Gauge

52-week Range

Market Cap (USDm)

P/E

Dividend (Yield)

CSI 300 June 2026 Rebalance: Post-Implementation Review

CSI 300 June 2026 rebalance has passed the first post-implementation month. We review what worked, what did not, and how current results compare...

Ke Yan, CFA, FRM

CSI 300 Index Earning Revision (Jun): INDUSTRIAL BANK, YANTAI JEREH OILFIELD SERVICES, KUNLUN TECH

We analyzed CSI 300's consensus for Jun 2026 and highlighted changes of EPS in INDUSTRIAL BANK (601166 CH), YANTAI JEREH OILFIELD SERVICES (002353...

Ke Yan, CFA, FRM

CSI 300 June 2026 Rebalance: Pre-Implementation Update

CSI 300 enters implementation on 15 Jun 2026. We update post-announcement stock performance and discuss implementation trades.

Ke Yan, CFA, FRM

CSI 300 June 2026 Rebalance: Post-Announcement Positioning

CSI 300 June 2026 post-announcement trading is live. ADD strength is concentrated in a few forecast names. The opening gap should set chase and...

Ke Yan, CFA, FRM

A-Share Margin Trading Weekly (May 22nd): JIANGSU XINQUAN AUTOMOTIVE TRIM, LENS TECHNOLOGY, BOE

We analyzed A-share margin trading positions report for the past week and highlighted JIANGSU XINQUAN AUTOMOTIVE TRIM, LENS TECHNOLOGY, BOE,...

Ke Yan, CFA, FRM