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“十五五”规划系列二:重大项目复盘与展望
GOLDEN SUN SECURITIES· 2025-09-17 00:01
Group 1: Major Projects Review and Outlook - The "14th Five-Year Plan" has established 102 major projects as key measures to stabilize the economy, and the "15th Five-Year Plan" is expected to continue focusing on five categories: livelihood, technology + industry, infrastructure, ecological construction, and safety engineering [3] - New projects during the "15th Five-Year Plan" will particularly emphasize water conservancy infrastructure, technology integration, and urban renewal [3] Group 2: Convertible Bond Market Analysis - As of September 12, 2025, the pricing deviation indicator for the convertible bond market is at 5.27%, which is at the 99.3 percentile level since 2018, indicating high volatility in valuations [4] - The report suggests that investors aiming for absolute returns should consider reducing their positions in equity-linked convertible bonds to mitigate potential market downturns [4] Group 3: Company Analysis - Core International - Core International (300662.SZ) is a leading enterprise in the human services industry, with a focus on AI and international expansion as new growth points [5] - The company has established a comprehensive ecosystem through technology investment, including its own AI model and the industrial interconnection platform "He Wa," covering recruitment, flexible employment, and other services [5] - Revenue projections for Core International are estimated at 15.09 billion, 18.93 billion, and 22.82 billion yuan for 2025, 2026, and 2027 respectively, with net profits of 300 million, 370 million, and 430 million yuan [5]
主动量化研究系列:量化轮动:锁定高胜率交易池
ZHESHANG SECURITIES· 2025-09-15 11:24
- The report discusses the construction of an out-of-sample effective index allocation portfolio, focusing on three key aspects: price judgment, tool expression, and risk control. Price judgment involves forming predictions on the price trends of major assets, industries, or individual stocks using macro, meso, and micro-level information through qualitative, quantitative, or mixed methods. Tool expression refers to selecting investable tools for portfolio implementation, while risk control manages potential losses in the portfolio[9] - The primary goal of the strategy is to reduce overfitting risks to enhance out-of-sample effectiveness. This is achieved through three measures: expanding the pool of targets, neutralizing factors to reduce style impact, and managing portfolio risks to mitigate the impact of tail risks on excess returns. Signal sustainability outside the sample is emphasized as a critical factor[2] - The report highlights the advantages of using equity indices as allocation tools. Indices, being a basket of stocks, can hedge individual stock-specific risks to some extent. They also serve as better tools for expressing investment views due to their distinct target attributes. Additionally, risk models at the index level are more effective, providing better risk management outcomes[11][12] - The construction of the index risk control model follows a process similar to stock risk control models but requires additional steps to synthesize index-level data. The process includes selecting indices published before the given trading day, ensuring all index components are A-shares, obtaining index component lists and weights, and calculating weighted scores for industry/style exposures based on real-time weights. The model's effectiveness is significantly higher than individual stock models, with industry contributions surpassing style contributions[22][23] - The report categorizes factors into four main types: fundamental, analyst, price-volume, and high-frequency. Each type is further divided into subcategories, such as growth, profitability, valuation, momentum reversal, volatility, liquidity, and fund flows. The factor library includes a total of 275 factors, with specific counts for each subcategory[26][27][30] - Historical performance analysis of sub-strategies shows varying correlations among them, emphasizing the necessity of multi-strategy approaches. For the period of January to August 2025, fundamental factors like profitability and growth, as well as price-volume sub-strategies, performed well. However, individual sub-strategies experienced periodic drawdowns, highlighting the importance of diversification[27][30] - Based on selected sub-strategies, the report constructs a composite index scoring signal for portfolio allocation. Anchored to the CSI All Share Index, the portfolio controls deviations in industry and major style exposures. The out-of-sample performance, including returns, drawdowns, and tracking errors, aligns closely with backtest results[32][33] - The report evaluates the use of existing products, including active and passive types, for tracking the target index portfolio. Combining active and passive products yields better out-of-sample tracking results compared to using ETFs alone. While ETFs perform well in certain months, the combined approach demonstrates superior consistency[37][38] - The report identifies the overall performance of factors in 2025, with fundamental factors like growth and profitability, as well as price-volume factors such as momentum reversal, volatility, and liquidity, showing strong results[36]
【中泰研究丨晨会聚焦】银行戴志锋:专题| 详细拆解国有大型银行(六家)2025年中报:业绩增速改善,资产质量较优,资本实力夯实-20250902
ZHONGTAI SECURITIES· 2025-09-02 06:09
Group 1 - The overall revenue and profit growth of state-owned banks improved in 1H25, mainly driven by a significant increase in other non-interest income and cost release. Additionally, market interest rates and deposit rates declined, stabilizing the interest margin, leading to a marginal increase in net interest income growth [2][3]. - The asset quality of state-owned banks is relatively strong, with non-performing loan (NPL) ratios and attention rates remaining low and either stable or decreasing. The provision coverage ratio increased, enhancing the safety margin, and the capital adequacy ratio also improved, strengthening the risk resistance capability of these banks [2][4]. - Investment recommendations suggest a shift in the operating model and investment logic of bank stocks from "pro-cyclical" to "weak cycle." During periods of economic stagnation, high dividend yields from bank stocks will remain attractive, and the report continues to favor the stability and sustainability of bank stocks [2][5]. Group 2 - In terms of revenue, the year-on-year growth for 1H25 was +1.5%, with a turnaround from negative to positive growth compared to 1Q25. The net profit saw a slight decline of -0.1% year-on-year, but the decline narrowed compared to the previous quarter. The increase in revenue was largely attributed to the growth in non-interest income, particularly from the stock market [3][7]. - The asset quality analysis indicates that the overall NPL ratio remained stable at 1.27% in 1H25, with a slight decrease in the attention loan ratio. The overdue loan ratio increased slightly but remains low, and the provision coverage ratio rose to 237.50%, further enhancing the safety margin [4][9]. - The report highlights that the cost-to-income ratio for 1H25 was 29.3%, showing a year-on-year decrease, while the core Tier 1 capital adequacy ratio improved to 12.67%, maintaining a high level of capital strength [4][10].
质量风格占优,攻守兼备红利组合持续跑出超额
Changjiang Securities· 2025-08-25 04:42
Quantitative Models and Construction Methods - **Model Name**: Dividend Growth Strategy **Model Construction Idea**: Focuses on identifying stocks with strong dividend growth potential, aiming to outperform pure dividend assets by leveraging growth-oriented metrics[5][14] **Model Construction Process**: The strategy selects stocks based on their historical dividend growth rates and projected growth potential. It emphasizes companies with consistent dividend increases and robust financial health. Specific metrics or formulas were not detailed in the report[5][14] **Model Evaluation**: Demonstrated superior performance compared to pure dividend assets, indicating its effectiveness in capturing growth opportunities within dividend-paying stocks[5][14] - **Model Name**: Dividend Quality Strategy **Model Construction Idea**: Targets high-quality dividend stocks by assessing financial stability and sustainability of dividend payouts[5][14] **Model Construction Process**: The strategy evaluates companies based on financial metrics such as return on equity (ROE), debt-to-equity ratio, and earnings stability. It prioritizes firms with strong balance sheets and consistent profitability. Specific formulas were not provided[5][14] **Model Evaluation**: Outperformed pure dividend assets, showcasing its ability to identify stable and reliable dividend-paying companies[5][14] - **Model Name**: Balanced Dividend 50 Portfolio **Model Construction Idea**: Combines defensive and growth-oriented dividend stocks to achieve a balanced risk-return profile[13][23] **Model Construction Process**: The portfolio is constructed by selecting 50 stocks that exhibit both high dividend yields and growth potential. It uses a combination of dividend yield, growth metrics, and financial stability indicators. Detailed formulas were not disclosed[13][23] **Model Evaluation**: Achieved significant excess returns relative to the benchmark, highlighting its balanced approach's effectiveness[13][23] - **Model Name**: High Dividend 30 Portfolio **Model Construction Idea**: Focuses on high-dividend-yielding stocks, particularly from central and state-owned enterprises, to provide stable income[13][23] **Model Construction Process**: The portfolio selects 30 stocks with the highest dividend yields among central and state-owned enterprises. It emphasizes income generation and stability. Specific formulas were not mentioned[13][23] **Model Evaluation**: Delivered consistent excess returns, demonstrating its suitability for income-focused investors[13][23] - **Model Name**: Electronic Balanced Allocation Enhanced Portfolio **Model Construction Idea**: Aims to achieve balanced exposure within the electronics sector by diversifying across sub-industries[13][31] **Model Construction Process**: The portfolio allocates investments across various electronics sub-industries, balancing growth and stability. It uses sector-specific metrics to identify leading companies. Detailed formulas were not provided[13][31] **Model Evaluation**: Achieved positive returns but underperformed the electronics sector index, indicating room for improvement in capturing sector-wide trends[13][31] - **Model Name**: Electronics Sector Select Enhanced Portfolio **Model Construction Idea**: Focuses on mature sub-industry leaders within the electronics sector to capture stable growth[13][31] **Model Construction Process**: The portfolio targets leading companies in mature electronics sub-industries, emphasizing financial stability and market leadership. Specific formulas were not disclosed[13][31] **Model Evaluation**: Delivered positive returns but failed to outperform the electronics sector index, suggesting limited effectiveness in capturing broader sector dynamics[13][31] --- Model Backtesting Results - **Dividend Growth Strategy**: Weekly average return exceeded 2%, outperforming pure dividend assets[5][14] - **Dividend Quality Strategy**: Weekly average return exceeded 2%, outperforming pure dividend assets[5][14] - **Balanced Dividend 50 Portfolio**: Weekly excess return of approximately 0.99% relative to the CSI Dividend Total Return Index; year-to-date excess return of 6.04%[13][23] - **High Dividend 30 Portfolio**: Weekly excess return of approximately 0.76% relative to the CSI Dividend Total Return Index[13][23] - **Electronic Balanced Allocation Enhanced Portfolio**: Weekly return of approximately 5.01%, underperforming the electronics sector index[13][31] - **Electronics Sector Select Enhanced Portfolio**: Weekly return of approximately 3.91%, underperforming the electronics sector index[13][31]
学海拾珠系列之二百四十六:基于图形派与基本面派的股市信息效率模型
Huaan Securities· 2025-08-20 13:05
Quantitative Models and Construction Methods 1. Model Name: Chartist-Fundamentalist Model - **Model Construction Idea**: This model integrates the behaviors of chartists and fundamentalists to explain the coexistence of constant mispricing and oscillatory mispricing in stock markets. It reconciles the views of Grossman & Stiglitz (1980) and Lo & Farmer (1999) by considering the dynamic interactions between these two types of traders and the role of market makers[4][17][20] - **Model Construction Process**: - **Market Maker's Price Adjustment**: The market maker adjusts prices based on excess demand using the equation: $$ P_{t+1} = P_{t} + \alpha(D_{t}^{C} + D_{t}^{F} + D_{t}^{R} - N) \tag{1} $$ where \( \alpha > 0 \) is the price adjustment parameter, \( D_{t}^{C} \) and \( D_{t}^{F} \) represent the demand from chartists and fundamentalists, \( D_{t}^{R} \) is non-speculative demand, and \( N \) is the total stock supply[24][26] - **Chartists' Behavior**: Chartists extrapolate past price trends into the future, formalized as: $$ D_{t}^{C} = \beta(P_{t} - P_{t-1}) \tag{3} $$ where \( \beta > 0 \) is the market reaction coefficient of chartists[27] - **Fundamentalists' Behavior**: Fundamentalists trade based on deviations from fundamental value \( F_t \), with their demand defined as: $$ D_{t}^{F} = \begin{cases} \gamma(F_{t} - P_{t}) & \text{if } P_{t} - F_{t} > h \\ 0 & \text{if } -h \leq P_{t} - F_{t} \leq h \\ \gamma(F_{t} - P_{t}) & \text{if } P_{t} - F_{t} < -h \end{cases} \tag{4} $$ where \( \gamma > 0 \) measures the market influence of fundamentalists, and \( h \) is the threshold for mispricing[27] - **Fundamental Value Dynamics**: The fundamental value follows a random walk: $$ F_{t+1} = F_{t} + \delta_{t}, \quad \delta_{t} \sim N(0, \sigma_{\delta}^2) \tag{5} $$[28] - **Price Evolution Equation**: Combining the above equations, the price evolution is expressed as: $$ P_{t+1} = \begin{cases} (1 + \alpha\beta - \alpha\gamma)P_{t} - \alpha\beta P_{t-1} + \alpha\gamma F_{t} & \text{if } P_{t} - F_{t} > h \\ (1 + \alpha\beta)P_{t} - \alpha\beta P_{t-1} & \text{if } -h \leq P_{t} - F_{t} \leq h \\ (1 + \alpha\beta - \alpha\gamma)P_{t} - \alpha\beta P_{t-1} + \alpha\gamma F_{t} & \text{if } P_{t} - F_{t} < -h \end{cases} \tag{6} $$[29] - **Model Evaluation**: The model successfully explains the coexistence of constant and oscillatory mispricing, highlighting the dynamic nature of market efficiency and the role of trader interactions[4][17][85] --- Model Backtesting Results 1. Chartist-Fundamentalist Model - **Parameter Region R1**: When both chartists' and fundamentalists' market influence are low, prices converge to a non-fundamental fixed point, resulting in constant mispricing[21][22][66] - **Parameter Region R2**: With moderate market influence, prices either converge to a non-fundamental fixed point or exhibit endogenous oscillatory dynamics[21][22][66] - **Parameter Region R3**: When fundamentalists' market influence is high, prices either converge to a non-fundamental fixed point or diverge[21][22][66] - **Parameter Region R4**: When chartists' market influence is high, prices exhibit divergent dynamics[21][22][66] - **Impact of Fundamental Shocks**: Random shocks to the fundamental value can cause transitions between fixed-point dynamics and oscillatory dynamics, with the latter becoming dominant as the parameter \( c \) increases[78][79][80]
金融工程日报:沪指缩量震荡,消费电子、CPO概念持续火热-20250819
Guoxin Securities· 2025-08-19 14:34
The provided content does not contain any specific quantitative models or factors, nor does it include their construction processes, formulas, evaluations, or backtesting results. The documents primarily discuss market performance, sector and concept index movements, market sentiment, capital flows, ETF premiums/discounts, block trading discounts, and institutional activities. These are general market observations and statistics rather than detailed quantitative models or factor analyses.
如何克服因子表现的截面差异
Quantitative Models and Factor Construction Quantitative Models and Construction Methods - **Model Name**: Market Cap Segmented Linear Regression Model **Construction Idea**: Adjust the weights of factor regressions based on market cap segmentation to address the performance differences of factors across different market cap groups [7][10][12] **Construction Process**: 1. Factors are divided into five categories: Dividend, ROE_SUE, Daily Volume-Price, High-Frequency Volume-Price, and a final composite factor [7][10] 2. Use OLS regression with IC or ICIR weighting to combine sub-factors into composite factors [7] 3. Apply KMedian clustering on the log of market cap to divide stocks into 11 groups [7] 4. Assign weights to each group using the formula: $ w_{i}=w_{base}+(1-w_{base})*|i-I|/n $ where $w_{base}$ is the minimum weight (set to 0.9, 0.5, or 0), $n$ is the number of groups, and $I$ is the group with the highest weight [7] 5. Train 11 models with different weight assignments and evaluate the composite factor's IC, RankMAE, long-short returns, and long-only returns [7] **Evaluation**: This model improves factor performance in specific market cap segments, particularly for small-cap stocks, but extreme weighting can increase volatility [7][12] - **Model Name**: Market Cap Weighted Composite Factor Model **Construction Idea**: Reweight composite factors based on market cap distribution to enhance factor performance in specific indices [48][49][65] **Construction Process**: 1. Use market cap weights from benchmark indices (e.g., CSI 300, CSI 500, CSI 1000) to reweight composite factors [48] 2. Construct enhanced portfolios with weekly rebalancing and constraints on individual stock weights, industry weights, and turnover [48] **Evaluation**: Significant performance improvement in CSI 300 and CSI 500 indices, with annualized excess returns increasing by over 1% in some cases. However, the method is less effective for CSI 1000 [49][65][79] - **Model Name**: Market Cap Weighted Cross-Composite Factor Model **Construction Idea**: Match factor weights to the market cap group of each stock to reduce parameter sensitivity [80][81] **Construction Process**: 1. Assign factor values based on the stock's market cap group: $ F_{i}=F_{l_{i}}\;\;i\in I $ where $i$ belongs to market cap group $I$ [80] 2. Evaluate single-factor performance and construct enhanced portfolios for different indices [81][85] **Evaluation**: Performance improvement is observed in CSI 300 and CSI 500 indices, but the method is less effective for CSI 1000. Parameter sensitivity is reduced compared to other methods [85][92][96] - **Model Name**: Multi-Style Factor Weighted Composite Factor Model **Construction Idea**: Incorporate style factors (e.g., value-growth, industry) into the weighting process to address factor performance differences across styles [98][99] **Construction Process**: 1. Cluster stocks based on style factors using Manhattan distance [98] 2. Construct 11 composite factor models centered on each style cluster [98] 3. Use cross-composite and component-composite methods to evaluate performance in enhanced portfolios [100][101] **Evaluation**: Performance improvement is limited compared to market cap-based methods. Cross-composite weighting shows better results than component-composite weighting in some cases [101][115][132] Backtest Results of Models - **Market Cap Segmented Linear Regression Model**: - IC: 0.057 (all-market), 0.037 (CSI 300), 0.040 (CSI 500), 0.052 (CSI 1000), 0.060 (small-cap) [7][81][84] - RankMAE: 1.090 (all-market), 1.119 (CSI 300), 1.111 (CSI 500), 1.106 (CSI 1000), 1.092 (small-cap) [7][81][84] - Long-Short Returns: 1.07% (all-market), 0.38% (CSI 300), 0.49% (CSI 500), 0.92% (CSI 1000), 1.19% (small-cap) [7][81][84] - **Market Cap Weighted Composite Factor Model**: - CSI 300: Annualized Return 8.21%, IR 0.966, Max Drawdown 15.67% (base_w=0) [49] - CSI 500: Annualized Return 14.64%, IR 1.385, Max Drawdown 12.60% (base_w=0.5) [59] - CSI 1000: Annualized Return 18.95%, IR 1.585, Max Drawdown 16.59% (equal weight) [70] - **Market Cap Weighted Cross-Composite Factor Model**: - CSI 300: Annualized Return 7.36%, IR 0.901, Max Drawdown 16.33% (base_w=0) [85] - CSI 500: Annualized Return 15.06%, IR 1.409, Max Drawdown 13.14% (base_w=0.5) [92] - CSI 1000: Annualized Return 18.95%, IR 1.585, Max Drawdown 16.59% (equal weight) [92] - **Multi-Style Factor Weighted Composite Factor Model**: - CSI 300: Annualized Return 7.24%, IR 0.926, Max Drawdown 16.32% (base_w=0.9, component-composite) [103] - CSI 500: Annualized Return 14.17%, IR 1.377, Max Drawdown 12.65% (base_w=0, cross-composite) [115] - CSI 1000: Annualized Return 18.63%, IR 1.570, Max Drawdown 16.47% (base_w=0, component-composite) [132]
红利质量占优,攻守兼备红利50组合超额显著
Changjiang Securities· 2025-08-17 23:30
- The report introduces several active quantitative strategies launched by the Changjiang Quantitative Team since July 2023, including the Dividend Selection Strategy and the Industry High Winning Rate Strategy[6][13] - The "Dividend Quality" segment showed relatively active performance with a weekly average return of approximately 1.64%, indicating excess returns compared to pure dividend assets[6][16] - The "Central State-Owned Enterprises High Dividend 30 Portfolio" and the "Balanced Dividend 50 Portfolio" both outperformed the CSI Dividend Total Return Index this week, with excess returns of approximately 0.61% and 1.51%, respectively[6][22] - The "Balanced Dividend 50 Portfolio" achieved positive returns this week[6][22] - The "Electronic Balanced Allocation Enhanced Portfolio" and the "Electronic Sector Preferred Enhanced Portfolio" both achieved positive returns this week, although they did not outperform the electronic industry index[7][31] - The "Electronic Sector Preferred Enhanced Portfolio" had a weekly return of approximately 6.20%, outperforming the median of technology-themed fund products[7][31] Quantitative Models and Construction Methods 1. Model Name: Dividend Selection Strategy; Model Construction Idea: Focuses on selecting stocks with high dividend yields and quality; Model Construction Process: The strategy involves screening stocks based on dividend yield, payout ratio, and other fundamental factors to construct a portfolio that aims to provide stable and high returns; Model Evaluation: The strategy has shown to provide excess returns compared to pure dividend assets[6][13][16] 2. Model Name: Industry High Winning Rate Strategy; Model Construction Idea: Focuses on selecting stocks within high-performing industries; Model Construction Process: The strategy involves identifying industries with strong performance and selecting stocks within those industries based on various fundamental and technical factors; Model Evaluation: The strategy aims to provide alternative perspectives and investment choices for investors by tracking market hotspots and selecting individual stocks within high-performing industries[6][13] Model Backtesting Results 1. Dividend Selection Strategy, Excess Return: 1.64%[6][16] 2. Central State-Owned Enterprises High Dividend 30 Portfolio, Excess Return: 0.61%[6][22] 3. Balanced Dividend 50 Portfolio, Excess Return: 1.51%[6][22] 4. Electronic Sector Preferred Enhanced Portfolio, Weekly Return: 6.20%[7][31] Quantitative Factors and Construction Methods 1. Factor Name: Dividend Quality; Factor Construction Idea: Focuses on stocks with high dividend quality; Factor Construction Process: The factor involves screening stocks based on dividend yield, payout ratio, and other fundamental factors to identify stocks with high dividend quality; Factor Evaluation: The factor has shown to provide excess returns compared to pure dividend assets[6][16] 2. Factor Name: Industry Performance; Factor Construction Idea: Focuses on stocks within high-performing industries; Factor Construction Process: The factor involves identifying industries with strong performance and selecting stocks within those industries based on various fundamental and technical factors; Factor Evaluation: The factor aims to provide alternative perspectives and investment choices for investors by tracking market hotspots and selecting individual stocks within high-performing industries[6][13] Factor Backtesting Results 1. Dividend Quality Factor, Weekly Average Return: 1.64%[6][16] 2. Industry Performance Factor, Weekly Return: 6.20%[7][31]
就在今天|国泰海通 ·2025研究框架培训“洞察价值,共创未来”
Group 1 - The article outlines a comprehensive research framework training program titled "洞察价值,共创未来" (Insight Value, Co-create Future) scheduled for August 18-19 and August 25-26, 2025, focusing on various sectors including macroeconomics, consumption, finance, cycles, medicine, technology, and manufacturing [18][19]. - The training sessions will cover a wide range of topics, with specific time slots allocated for each area of research, such as food and beverage, internet applications, and renewable energy [14][15][16]. - The event will take place at the Guotai Junan Financial Bund Plaza in Shanghai, emphasizing the importance of in-depth analysis across all sectors [18]. Group 2 - The training program is designed to enhance the research capabilities of analysts and is led by various chief analysts specializing in different fields, ensuring a comprehensive approach to industry analysis [8][10]. - Participants will have the opportunity to engage with experts in macroeconomic research, strategy, fixed income, and various sector-specific studies, fostering a collaborative learning environment [14][15][16]. - The program aims to equip analysts with the necessary tools and insights to navigate the complexities of the financial markets and identify potential investment opportunities [18].
市场稳步上行,IC及IM主力合约贴水幅度收窄
Guoxin Securities· 2025-08-13 15:02
- The report introduces a quantitative model for estimating dividend points in stock indices, which is crucial for accurately assessing the premium or discount in stock index futures contracts. The model incorporates factors such as component stock weights, dividend amounts, total market capitalization, and index closing prices[38][44][46] - The model calculates the dividend points for a stock index during the period from the current date (t) to the futures contract expiration date (T) using the formula: $$ \text{Dividend Points} = \sum_{n=1}^{N} \left( \frac{\text{Dividend Amount of Stock n}}{\text{Total Market Cap of Stock n}} \times \text{Weight of Stock n} \times \text{Index Closing Price} \right) $$ This formula ensures that only stocks with ex-dividend dates between t and T are included[38][44] - Component stock weights are dynamically adjusted using the formula: $$ W_{n,t} = \frac{w_{n0} \times (1 + r_{n})}{\sum_{i=1}^{N} w_{i0} \times (1 + r_{i})} $$ Here, \( w_{n0} \) represents the weight of stock \( n \) at the last disclosed date, and \( r_{n} \) is the non-adjusted return of stock \( n \) between the last disclosed date and the current date[45] - The model estimates net profit for stocks without disclosed data by categorizing companies into stable and unstable profit distribution groups. Stable companies are predicted based on historical patterns, while unstable ones use the previous year's profit as a proxy[47][50] - Dividend payout ratios are estimated using historical averages. If a company paid dividends in the previous year, that ratio is used; otherwise, a three-year average is applied. Companies with no dividend history are assumed not to pay dividends[51][53] - Ex-dividend dates are predicted using a linear extrapolation method based on historical intervals between announcement and ex-dividend dates. Default dates are applied if historical data is insufficient or inconsistent[51][56] - The model's accuracy was validated by comparing predicted dividend points with actual values for the Shanghai 50, CSI 300, and CSI 500 indices in 2023 and 2024. The Shanghai 50 and CSI 300 predictions showed errors within 5 points, while the CSI 500 had slightly larger errors, around 10 points[57][61][66]