Quantitative Models and Construction Methods 1. Model Name: Liquidity Impact Coefficient Model - **Model Construction Idea**: This model measures the liquidity impact of index adjustments on individual stocks by calculating the ratio of net fund flows to the stock's recent average daily trading volume[12][13] - **Model Construction Process**: The liquidity impact coefficient for a stock is calculated as follows: $$ impact_{i} = \sum_{k=1}^{N} \frac{\Delta weight_{k,i} \times AUM_{k}}{amt\_avg_{i,20}} $$ - \( \Delta weight_{k,i} \): Estimated weight change of stock \( i \) in index \( k \) - \( AUM_{k} \): Total assets under management of passive products tracking index \( k \) as of the end of November - \( amt\_avg_{i,20} \): Average daily trading volume of stock \( i \) over the past 20 trading days as of the end of November[12][13] - **Model Evaluation**: The model provides a quantitative framework to estimate short-term liquidity shocks caused by index adjustments, but it is subject to data discrepancies and assumptions, which may lead to deviations from actual results[13] --- Model Backtesting Results Liquidity Impact Coefficient Model - **Top 5 Stocks with Highest Positive Impact Coefficients**: - Zhangjiagang Bank (002839 CH): 11.55[15] - Jiangzhong Pharmaceutical (600750 CH): 11.44[15] - Tower Group (002233 CH): 11.04[15] - Jichuan Pharmaceutical (600566 CH): 10.14[15] - Zhengbang Technology (002157 CH): 9.99[15] - **Top 5 Stocks with Highest Negative Impact Coefficients**: - Shenzhen Expressway (600548 CH): -24.95[16] - Vanward Electric (002543 CH): -20.90[16] - Aviation Materials (688563 CH): -14.06[16] - Huaxi Biology (688363 CH): -10.81[16] - Ninghu Expressway (600377 CH): -10.54[16] --- Quantitative Factors and Construction Methods 1. Factor Name: Net Fund Flow Factor - **Factor Construction Idea**: This factor estimates the net fund inflow or outflow for stocks due to index adjustments, based on changes in index weights and the total AUM of passive products tracking the index[9][10] - **Factor Construction Process**: - Outflow Amount: Total AUM of linked products multiplied by the stock's actual weight in the index as of the end of November - Inflow Amount: Total AUM of linked products multiplied by the estimated weight of the stock in the index post-adjustment - Weight estimation is based on free-float market capitalization and index-specific weighting rules, such as dividend yield weighting or market capitalization weighting[9][10] - **Factor Evaluation**: The factor provides a transparent and systematic approach to estimate fund flows, but it is sensitive to assumptions about future index weights and AUM changes[9][10] --- Factor Backtesting Results Net Fund Flow Factor - **Top 5 Stocks with Highest Net Fund Inflows**: - Victory Precision (300476 CH): 112.61 billion CNY[10] - Dongshan Precision (002384 CH): 99.32 billion CNY[10] - Guangqi Technology (002625 CH): 77.81 billion CNY[10] - Sugon Information (603019 CH): 65.44 billion CNY[10] - Top Group (601689 CH): 53.07 billion CNY[10] - **Top 5 Stocks with Highest Net Fund Outflows**: - China Mobile (600941 CH): -40.02 billion CNY[11] - CRRC Corporation (601766 CH): -36.40 billion CNY[11] - Aluminum Corporation of China (601600 CH): -34.29 billion CNY[11] - TCL Zhonghuan (002129 CH): -30.07 billion CNY[11] - Huagong Tech (000988 CH): -27.44 billion CNY[11]

Core Viewpoint - Multiple indices in the A-share market are undergoing significant adjustments, with announcements made by the Shanghai and Shenzhen Stock Exchanges regarding changes to sample stocks in various indices [2][4]. Group 1: Index Adjustments - On November 28, the Shanghai Stock Exchange announced adjustments to the sample stocks of the Shanghai 50, Shanghai 180, Shanghai 380, and Sci-Tech 50 indices, effective after the market closes on December 12, 2025 [4][14]. - The Shanghai 50 index will replace four stocks, including the addition of SAIC Motor, Northern Rare Earth, Huadian New Energy, and Zhongke Shuguang, while Poly Development, China Mobile, China Aluminum, and CRRC will be removed [5][17]. - The Sci-Tech 50 index will replace two stocks, adding Aojie Technology and Shengke Communication, while Huaxi Biotechnology and Hangcai Co. will be removed [5][6]. Group 2: Shenzhen Stock Exchange Adjustments - The Shenzhen Stock Exchange announced that it will implement regular sample stock adjustments for the Shenzhen Component Index, ChiNext Index, Shenzhen 100, and ChiNext 50 on December 15, 2025 [6][14]. - The Shenzhen Component Index will add 17 stocks, including Tuowei Information, Sifang Jingchuang, and Wolong Nuclear Materials, while Guoyao Yizhi, Haide Shares, and Tibet Mining will be removed [6][7]. Group 3: Additional Index Changes - The ChiNext Index will add eight stocks, including Shuanglin Co., Changshan Pharmaceutical, and Changsheng Bearing [9][11]. - The CSI 300, CSI 500, and other indices will also undergo adjustments, with the CSI 300 replacing 11 stocks, including Huadian New Energy and Shenghong Technology, while removing FAW Liberation and Oppein Home [16][17]. - The CSI 500 index will replace 50 stocks, the CSI 1000 index will replace 100 stocks, and the CSI A50 and A100 indices will replace 4 and 6 stocks respectively [17].

Core Insights - The report provides a summary of recommended stocks across various industries for December 2025, highlighting investment logic and potential growth opportunities for each company [2]. Industry Summaries Construction - Shenghui Integrated (603163.SH) is a Taiwanese cleanroom engineering service provider and a core engineering supplier for Google's TPU, poised to benefit from TSMC's expansion in the U.S. with potential orders from TSMC Arizona and multiple North American data centers [2]. Banking - China Merchants Bank (600036.SH) is expected to attract investors due to its stable operations and a projected dividend yield of 4.62% for the 2024 annual report, with increased demand for low-volatility stocks as market fluctuations rise [2]. Electronics - Aojie Technology (688220.SH) is positioned to benefit from the AI trend, with its unique 2-5G full-standard cellular communication capabilities and strong ASIC customization experience, which are expected to drive growth in wearable technology and other applications [2]. Power Equipment and New Energy - Delijia (603092.SH) maintains a leading market share in wind power main gearboxes, with a projected global market size of $11.563 billion by 2030 and a compound annual growth rate of 5.10% from 2024 to 2030, indicating stable growth prospects [2]. Basic Chemicals - Yaqi International (000893) is set to increase its potash fertilizer production capacity significantly, benefiting from a rising global potash market [2]. Agriculture, Forestry, Animal Husbandry, and Fishery - Youran Dairy (9858.HK), a leading global dairy farming company, is expected to benefit from rising milk prices and beef prices, leading to improved performance [2]. Internet - Alibaba (9988.HK) is experiencing accelerated growth in cloud revenue, with a 34% year-on-year increase in FY26Q2, and is expected to continue improving profitability through enhanced user engagement and AI integration [2]. Pharmaceuticals - Yifeng Pharmacy (603939.SH) is anticipated to see profit improvements due to ongoing optimization of its store structure and a clear plan for non-pharmaceutical profit growth [2]. Home Appliances - Midea Group (000333.SZ) is focusing on dual-driven strategies in domestic and international markets, with strong cash flow and a favorable dividend yield, despite facing some pressure in Q4 [2]. Non-Bank Financials - Ping An Insurance (601318.SH) is increasing investments in high-quality long-term assets, with potential for valuation improvement as market conditions shift [2].

Core Insights - The report provides a summary of recommended stocks across various industries for December 2025, highlighting investment logic and potential growth opportunities for each company [2]. Industry Summaries Construction - Shenghui Integrated (603163.SH) is a Taiwanese cleanroom engineering service provider and a core engineering supplier for Google's TPU, poised to benefit from TSMC's expansion in the U.S. with potential orders from TSMC Arizona and multiple North American data centers [2]. Banking - China Merchants Bank (600036.SH) is expected to attract investors due to its stable operations and a projected dividend yield of 4.62% for the 2024 annual report, with increased demand for low-volatility stocks as market fluctuations rise [2]. Electronics - Aojie Technology (688220.SH) is positioned to benefit from the AI trend, with its unique 2-5G full-standard cellular communication capabilities and strong ASIC customization experience, which is expected to drive growth in wearable technology [2]. Power Equipment and New Energy - Delijia (603092.SH) maintains a leading market share in wind power main gearboxes, with a projected global market size of $11.563 billion by 2030 and a compound annual growth rate of 5.10% from 2024 to 2030 [2]. Basic Chemicals - Yaqi International (000893) is set to increase its potash fertilizer production capacity significantly, benefiting from a rising global potash market [2]. Agriculture, Forestry, Animal Husbandry, and Fishery - Youran Dairy (9858.HK), a leading global dairy farming company, is expected to benefit from rising milk prices and beef price increases, leading to improved performance [2]. Internet - Alibaba (9988.HK) is experiencing accelerated growth in cloud revenue, with a 34% year-on-year increase in FY26Q2, and is expected to continue improving profitability [2]. Pharmaceuticals - Yifeng Pharmacy (603939.SH) is anticipated to see profit improvements due to ongoing optimization of its store structure and a clear planning rhythm for non-pharmaceutical profit increments [2]. Home Appliances - Midea Group (000333.SZ) is advancing its dual-driven strategy, focusing on both B2B and B2C markets, with strong cash flow and a favorable dividend yield, making it an attractive investment [2]. Non-Banking Financials - Ping An Insurance (601318.SH) is increasing investments in high-quality long-term assets, with potential for valuation improvement as market conditions shift [2].

Group 1 - The core point of the news is that Aojie Technology-U experienced significant trading activity on November 26, with a total of 187,500 shares traded, amounting to 15.09 million yuan, at a price of 80.50 yuan, which represents a 12% discount compared to the closing price of the day [2][3] - Institutional specialized seats participated in all three transactions, resulting in a net purchase of 15.09 million yuan [2] - Over the past three months, Aojie Technology-U has recorded a total of 71 block trades, with a cumulative transaction amount of 633 million yuan [2] Group 2 - The latest margin financing balance for Aojie Technology-U is 649 million yuan, showing a decrease of 38.85 million yuan over the past five days, which is a decline of 5.65% [3] - Aojie Technology Co., Ltd. was established on April 30, 2015, with a registered capital of 4.18300889 billion yuan [3] - On the same day, Aojie Technology-U's closing price was 91.48 yuan, reflecting a 4.44% increase, with a turnover rate of 2.90% and a total transaction amount of 956 million yuan, alongside a net inflow of main funds amounting to 61.58 million yuan [2]

Summary of Key Points Core Viewpoint - On November 26, Aojie Technology executed a block trade of 187,500 shares, amounting to 15.0938 million yuan, which represented 1.55% of the total trading volume for the day. The transaction price was 80.5 yuan, reflecting a 12% discount compared to the market closing price of 91.48 yuan [1]. Group 1: Trading Details - The block trade involved a total of 187,500 shares at a price of 80.5 yuan per share [1]. - The total transaction value was 15.0938 million yuan [1]. - The transaction accounted for 1.55% of the total trading volume on that day [1]. Group 2: Institutional Participation - The block trade was conducted by institutional investors, indicating a strategic move by larger market players [2]. - The trading data shows that the transaction was categorized as a special session, suggesting a focused trading strategy [2].

Core Insights - The AI computing chip sector is experiencing significant activity, driven by the explosive growth in global AI computing demand and the acceleration of self-developed AI ASIC chips by major cloud service providers [1] - Trendforce's report indicates that by 2025, the combined capital expenditure of eight major cloud service providers will exceed $420 billion, with a notable increase in investment for AI chip development and data center infrastructure [1] Sector Analysis - **AI Chip Design Sector**: Companies specializing in AI ASIC chip design will directly benefit from the increased demand from cloud service providers for customized chips, leading to potential revenue growth [2] - **Semiconductor Manufacturing Sector**: The production of computing chips relies on advanced and mature process capacities, with increased demand for chip production from cloud service providers likely to enhance capacity utilization for wafer manufacturing companies [2] - **Advanced Packaging and Testing Sector**: Advanced packaging technologies are crucial for improving chip performance and energy efficiency, and companies with expertise in high-end packaging will see expanded business opportunities [2] - **Storage Chip Sector**: The demand for high-speed storage chips will rise alongside computing power, with cloud data centers requiring DRAM and NAND Flash products, creating market opportunities for storage chip companies [2] Key Company Profiles - **Dongxin Co., Ltd.**: Focused on storage chips, the company has achieved breakthroughs in SLC NAND Flash technology, positioning itself to benefit from the growing AI computing demand [3] - **Cambricon Technologies**: A leading domestic AI chip company, it specializes in cloud intelligent chip development, with its high-performance chips expected to capture more market share as cloud service providers increase AI infrastructure investments [3] - **Chipone Technology**: As a prominent chip design service provider, it offers comprehensive solutions in AI chips and GPUs, likely to see increased demand for customized projects from cloud service providers [3] - **Broadcom Integrated**: The company focuses on chip development for wireless communication and IoT, with its products expected to see expanded applications in smart terminals and data center peripheral devices due to rising demand for edge computing [3]

Core Viewpoint - The trading activity of Aojie Technology-U on November 25 indicates significant transactions at a discount, reflecting market dynamics and investor sentiment towards the stock [2][3]. Group 1: Trading Activity - On November 25, Aojie Technology-U recorded 4 large transactions totaling 470,800 shares, with a transaction value of 36.29 million yuan [2]. - The transaction price was 77.08 yuan, representing a 12.00% discount compared to the closing price of the day [2]. - Over the past three months, the stock has seen a total of 68 large transactions, amounting to 618 million yuan [2]. Group 2: Stock Performance - The closing price of Aojie Technology-U on the same day was 87.59 yuan, reflecting a 4.99% increase, with a turnover rate of 2.33% and a total trading volume of 736 million yuan [2]. - The net inflow of main funds for the day was 32.48 million yuan, and the stock has increased by 2.06% over the past five days, with a total net inflow of 10.94 million yuan [2]. Group 3: Financing Data - The latest margin financing balance for Aojie Technology-U is 642 million yuan, which has decreased by 76.55 million yuan over the past five days, representing a decline of 10.66% [3]. - Aojie Technology Co., Ltd. was established on April 30, 2015, with a registered capital of 4.183 billion yuan [3].

Group 1 - The core point of the news is that Aojie Technology-U experienced significant trading activity on November 24, with a total of 10 transactions amounting to 1.1237 million shares and a total transaction value of 82.5021 million yuan, with a discount of 12.00% compared to the closing price [2] - Institutional participation was notable, with specialized institutional seats appearing in 5 of the transactions, contributing a total transaction value of 60.0943 million yuan and a net purchase of 60.0943 million yuan [2] - Over the past three months, Aojie Technology-U has recorded a total of 64 block trades, with a cumulative transaction value of 582 million yuan [3] Group 2 - The closing price of Aojie Technology-U on the day of the report was 83.43 yuan, reflecting a 3.40% increase, with a daily turnover rate of 1.40% and a total transaction amount of 417 million yuan [3] - The stock has seen a cumulative decline of 3.89% over the past five days, with a total net outflow of funds amounting to 25.7112 million yuan [3] - The latest margin financing balance for the stock is 655 million yuan, which has decreased by 65.9385 million yuan over the past five days, representing a decline of 9.15% [4]

Summary of Key Points Core Viewpoint - On November 24, a total of 12 stocks from the STAR Market experienced block trades, with a cumulative transaction amount of 323 million yuan, indicating active trading in the sector [1]. Group 1: Trading Activity - A total of 63 block trades were recorded, with a cumulative trading volume of 7.0263 million shares [1]. - The stock with the highest transaction amount was Zhuoyi Information, which had 29 block trades totaling 91.953 million yuan [1]. - Other notable stocks in terms of transaction amounts included Aojie Technology and Weixin Bio, with block trade amounts of 82.502 million yuan and 44.467 million yuan, respectively [1]. Group 2: Price and Discount Analysis - All stocks involved in block trades were executed at a discount, with the highest discount rates observed in Zhongchuang Co., Juguang Technology, and Dameng Data, with discount rates of 22.91%, 22.54%, and 22.32% respectively [1]. - The average increase for the STAR Market stocks involved in block trades was 3.96%, with Zhuoyi Information leading with a rise of 12.93% [1]. Group 3: Institutional Participation - Among the block trades, 24 transactions involved institutional buyers or sellers, with the highest buying amounts in Aojie Technology, Zhuoyi Information, and Dekeli, amounting to 60.0943 million yuan, 46.6515 million yuan, and 10.3032 million yuan respectively [2]. - Net inflows of capital were observed in four stocks, with the highest net inflow in Xibu Superconductor, Aojie Technology, and Xindong Lianke, totaling 39.3811 million yuan, 27.6447 million yuan, and 21.1364 million yuan respectively [2].