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公募基金周报(20250804-20250808)-20250817
Mai Gao Zheng Quan· 2025-08-17 09:18
1. Report Industry Investment Rating - Not provided in the content 2. Core Viewpoints of the Report - The A-share market showed a continuous upward trend this week, with the Shanghai Composite Index stable above 3,600 points. Although the weekly average daily trading volume decreased by 6.26% compared to last week, the margin trading balance exceeded 2 trillion and continued to rise, indicating that investors' risk appetite remained relatively high in the short term [1][10]. - Most industry sectors' trading volume proportions reached new lows in the past four weeks, suggesting that the market trading focus was concentrating on a small number of sectors. Investors should pay attention to the congestion risk of industry sectors and focus on capital flows in the market with rapid rotation of industry themes [10]. - In terms of market style, small-cap stocks had significant excess returns. The cyclical style led the gains among the five major CITIC style indices, while the consumer style had the smallest increase [12]. - It is recommended to focus on three main investment lines: the domestic computing power industry chain, the AI application end, and the consumption recovery sector. These sectors have relatively reasonable valuations and strong potential for supplementary growth under the background of loose liquidity [13]. 3. Summary According to Relevant Catalogs 3.1 This Week's Market Review 3.1.1 Industry Index - This week, sectors such as non-ferrous metals, machinery, and national defense and military industry led the gains. The pharmaceutical sector, which had performed well last week, corrected significantly, while the coal and non-ferrous metals sectors, which had large declines last week, rebounded sharply [10]. - The trading volume proportions of most industry sectors reached new lows in the past four weeks, and the trading activity of the comprehensive finance and non-bank finance sectors decreased significantly [10]. 3.1.2 Market Style - All five major CITIC style indices rose this week, with the cyclical style leading the gains at 3.49%. The growth style rose 1.87%, and its trading volume proportion reached a four-week high. The consumer style had the smallest increase at 0.77%, and its trading volume proportion decreased slightly [12]. - Small-cap stocks had significant excess returns. The CSI 1000 and CSI 2000 rose 2.51% and 3.54% respectively, and their trading volume proportions reached four-week highs [12]. 3.2 Active Equity Funds 3.2.1 Funds with Excellent Performance This Week in Different Theme Tracks - The report selected single-track and double-track funds based on six sectors: TMT, finance and real estate, consumption, medicine, manufacturing, and cyclical sectors, and listed the top five funds in each sector [17][18]. 3.2.2 Funds with Excellent Performance in Different Strategy Categories - The report classified funds into different types such as deep undervaluation, high growth, high quality, quality growth, quality undervaluation, GARP, and balanced cost-effectiveness, and listed the top-ranked funds in each type [19][20] 3.3 Index Enhanced Funds 3.3.1 This Week's Excess Return Distribution of Index Enhanced Funds - The average and median excess returns of CSI 300 index enhanced funds were 0.22% and 0.20% respectively; those of CSI 500 index enhanced funds were 0.05% and 0.07% respectively; those of CSI 1000 index enhanced funds were -0.15% and -0.14% respectively; those of CSI 2000 index enhanced funds were -0.09% and 0.04% respectively; those of CSI A500 index enhanced funds were 0.24% and 0.26% respectively; those of ChiNext index enhanced funds were 0.45% and 0.39% respectively; and those of STAR Market and ChiNext 50 index enhanced funds were 0.18% and 0.21% respectively [23][24]. - The average and median absolute returns of neutral hedge funds were 0.29% and 0.27% respectively; those of quantitative long funds were 1.75% and 1.83% respectively [24]. 3.4 This Issue's Bond Fund Selection - The report comprehensively screened the fund pools of medium- and long-term bond funds and short-term bond funds based on indicators such as fund scale, return-risk indicators, the latest fund scale, Wind fund secondary classification, rolling returns in the past three years, and maximum drawdowns in the past three years [38] 3.5 This Week's High-Frequency Position Detection of Funds - Active equity funds significantly increased their positions in the machinery and computer industries this week and significantly reduced their positions in the electronics, banking, and automobile industries [3]. - From a one-month perspective, the positions in the communication, banking, and non-bank finance industries increased significantly, while the position in the food and beverage industry decreased significantly [3] 3.6 This Week's Weekly Tracking of US Dollar Bond Funds - Not provided in the content
【金融工程】市场情绪仍偏强,追高时需注意风险防范——市场环境因子跟踪周报(2025.08.14)
华宝财富魔方· 2025-08-14 09:20
Investment Insights - The market sentiment remains strong with margin trading exceeding 2 trillion, indicating a potential overheating risk [1][4] - The cyclical sector is gaining strength driven by expectations from projects like the Xinjiang-Tibet Railway, while the rotation between growth and cyclical stocks continues [1][4] Equity Market Overview - Small-cap growth stocks significantly outperformed last week, while the volatility of both large and small-cap styles increased [6] - The dispersion of excess returns among industry indices is at a near one-year low, indicating a slowdown in industry rotation [6] - The trading concentration has increased, with the top 100 stocks and top 5 industries seeing a rise in transaction value share [6] Commodity Market Analysis - Precious metals and agricultural products showed increased trend strength, while other sectors remained stable or declined [15][16] - The volatility in black and energy chemical sectors remained stable, with a slight decrease in the volatility of non-ferrous metals [15][16] Options Market Insights - Implied volatility for the Shanghai Stock Exchange 50 and CSI 1000 indices continues to decline, reflecting a market that is both strong and cautious [24] Convertible Bond Market Trends - The premium rate for convertible bonds is approaching a one-year high, while the proportion of bonds with low conversion premiums is increasing, indicating structural growth characteristics [26]
【金麒麟优秀投顾访谈】财通证券投顾吴胤超:ETF模拟组合采用“行业轮动”策略 未来行业服务蕴含四大挑战
Xin Lang Zheng Quan· 2025-08-13 08:21
Core Viewpoint - The Chinese wealth management industry is entering a high-growth cycle, with investment advisors playing a crucial role in guiding asset allocation for clients [1] Group 1: Market Trends and Strategies - The current market is characterized by a "structural bull market," with significant differences in returns across industries, making rotation strategies effective for capturing excess returns [2][3] - The second quarter GDP growth rate was 5.2%, indicating a recovery in corporate earnings and providing a solid foundation for market support [3] - Northbound capital saw a net increase of $10.1 billion in the first half of the year, while financing balances increased by 75 billion yuan since April, reflecting a trend of retail savings entering the market through public funds [3] Group 2: Investment Advisor Challenges and Opportunities - Investment advisors face challenges in transforming service models from "sell-side sales" to "buy-side advisory," requiring a restructuring of income sources and balancing short-term gains with long-term asset allocation [4][5] - The integration of technology is essential, as AI can replace basic analysis tasks, but advisors must enhance their skills in human-machine collaboration to meet clients' emotional needs [4][5] - The demand for cross-disciplinary knowledge is increasing, particularly in areas like retirement, taxation, and cross-border assets, highlighting the need for composite talent in the advisory field [4] Group 3: Future Development of Investment Advisory Services - The core path for enhancing service capabilities involves shifting to a client-centric approach, focusing on account-level returns and satisfaction, and building deep trust with clients [5] - The future of advisory services will rely on "human-machine collaboration," where AI handles standardized processes, allowing advisors to focus on emotional support and client relationships [5] - The goal is to enhance both the financial and emotional value of client accounts, addressing the issue of market gains not translating into client profits, and moving towards a new stage of inclusive finance [5]
行业轮动周报:融资余额新高,创新药光通信调整,指数预期仍将震荡上行挑战前高-20250811
China Post Securities· 2025-08-11 11:16
- Model Name: Diffusion Index Model; Model Construction Idea: The model is based on the principle of price momentum; Model Construction Process: The model tracks the weekly and monthly changes in the diffusion index of various industries, ranking them accordingly. The formula used is $ \text{Diffusion Index} = \frac{\text{Number of Upward Trends}}{\text{Total Number of Trends}} $; Model Evaluation: The model has shown varying performance over the years, with significant returns in some periods and notable drawdowns in others[27][28][31] - Model Name: GRU Factor Model; Model Construction Idea: The model utilizes GRU deep learning networks to analyze minute-level volume and price data; Model Construction Process: The model ranks industries based on GRU factors, which are derived from deep learning algorithms processing historical trading data. The formula used is $ \text{GRU Factor} = \text{GRU Network Output} $; Model Evaluation: The model performs well in short cycles but has mixed results in longer cycles[33][34][36] - Diffusion Index Model, Average Weekly Return: 2.06%, Excess Return: -0.00%, August Excess Return: -0.45%, Year-to-Date Excess Return: -0.41%[31] - GRU Factor Model, Average Weekly Return: 2.71%, Excess Return: 0.65%, August Excess Return: 0.32%, Year-to-Date Excess Return: -4.35%[36] - Factor Name: GRU Industry Factor; Factor Construction Idea: The factor is derived from GRU deep learning networks analyzing minute-level trading data; Factor Construction Process: The factor ranks industries based on GRU network outputs, which are calculated from historical volume and price data. The formula used is $ \text{GRU Factor} = \text{GRU Network Output} $; Factor Evaluation: The factor has shown significant changes in rankings, indicating its sensitivity to market conditions[6][14][34] - GRU Industry Factor, Steel: 2.82, Building Materials: 1.72, Transportation: 1.3, Oil & Petrochemicals: 0.27, Construction: -0.46, Comprehensive: -1.87[6][14][34]
金融工程研究报告:多元时序预测在行业轮动中的应用
ZHESHANG SECURITIES· 2025-08-11 10:16
Quantitative Models and Construction Methods 1. Model Name: Multivariate CNN-LSTM - **Model Construction Idea**: The model leverages the advantages of CNN and LSTM in different scenarios to predict multiple parallel financial time series by considering the correlation between them[12][14]. - **Detailed Construction Process**: - **General Structure**: The model consists of an input layer, a one-dimensional convolutional layer, a pooling layer, an LSTM hidden layer, and a fully connected layer to produce the final prediction results[14]. - **Formula**: $$ {\hat{x}}_{k,t+h}=f_{k}(x_{1,t},\dots,x_{k,t},\dots,x_{1,t-1},\dots,x_{k,t-1},\dots) $$ This formula indicates that each variable depends not only on its past values but also on the past values of other variables[11]. - **Hyperparameters**: - Number of convolution filters: 64 - Convolution kernel size: 2 - Use of padding: Yes - Pooling layer window size: (2,2) - Number of hidden units in the first LSTM layer: 128 - Number of hidden units in the second LSTM layer: 128 - Activation method between LSTM layers: ReLU - Time series look-back window: 10 - Number of training epochs: 100[20] - **Evaluation Metric**: Root Mean Square Error (RMSE) $$ RMSE={\sqrt{\frac{1}{n}\sum_{i}({\hat{y_{i}}}-y_{i}\,)^{2}}} $$ where \( y_i \) represents the standardized index price, and \( \hat{y_i} \) represents the CNN-LSTM prediction value[21]. - **Model Evaluation**: The model achieved good tracking and high accuracy in predicting multiple parallel financial time series, similar to the performance in predicting stock indices in the Asia-Pacific market[14][17]. 2. Model Name: Grouped Multivariate CNN-LSTM - **Model Construction Idea**: To improve prediction accuracy, the industry indices are grouped based on investment attributes, and a separate prediction model is constructed for each group[26][27]. - **Detailed Construction Process**: - **Grouping**: The industry indices are divided into six groups: Consumer and Medicine, Upstream Resources and Materials, High-end Manufacturing, Real Estate and Infrastructure, Big Tech, and Big Finance[27]. - **Model Structure**: Each group of industry indices is predicted using a separate CNN-LSTM model, as shown in the general structure diagram[28]. - **Evaluation Metric**: The prediction accuracy is evaluated using RMSE, similar to the original model[33]. - **Model Evaluation**: Grouping and training different CNN-LSTM sub-models for each industry group improved the prediction accuracy, especially for industries with previously low prediction accuracy[30][32]. Model Backtesting Results 1. Multivariate CNN-LSTM Model - **Prediction Error (Training Phase)**: 1.52% to 3.18%[23] - **Prediction Error (Testing Phase)**: 1.56% to 3.30%[23][25] 2. Grouped Multivariate CNN-LSTM Model - **Prediction Error (Training Phase)**: 1.49% to 2.60%[33] - **Prediction Error (Testing Phase)**: 1.61% to 2.82%[33] Quantitative Factors and Construction Methods 1. Factor Name: Weekly Industry Rotation Signal - **Factor Construction Idea**: Use the predicted values from the multivariate CNN-LSTM model to estimate the future weekly returns of industry indices and select the top five industries with the highest expected returns for equal-weight allocation[3]. - **Detailed Construction Process**: - **Prediction**: Predict the future weekly returns of industry indices using the multivariate CNN-LSTM model[34]. - **Allocation**: Every five trading days, select the top five industries with the highest expected returns for equal-weight allocation[35]. - **Training**: Retrain the model at the beginning of each quarter using an extended window of historical data from March 2014 to the training point[35]. - **Factor Evaluation**: The annualized return of the industry rotation portfolio reached 15.6%, with an annualized excess return of approximately 11.6%, and the risk-return characteristics significantly improved compared to the benchmark[3][35]. Factor Backtesting Results 1. Weekly Industry Rotation Signal - **Annualized Return**: 15.6%[38] - **Annualized Volatility**: 25.6%[38] - **Maximum Drawdown**: -27.1%[38] - **Sharpe Ratio**: 0.7[38] - **Longest Drawdown Recovery Time**: 248 days[38]
上周A股过热情绪有所缓解
HTSC· 2025-08-10 10:40
Quantitative Models and Construction Methods Genetic Programming Industry Rotation Model - **Model Name**: Genetic Programming Industry Rotation Model - **Model Construction Idea**: Directly extract factors from industry index data such as volume, price, and valuation, and update the factor library at the end of each quarter[30] - **Model Construction Process**: The model adopts weekly frequency rebalancing, selecting the top five industries with the highest composite multi-factor scores for equal-weight allocation every weekend[30] - **Model Evaluation**: The model has achieved an absolute return of 28.79% this year, outperforming the industry equal-weight benchmark by 17.68 percentage points[30] - **Model Testing Results**: - Annualized Return: 31.39% - Annualized Volatility: 18.12% - Sharpe Ratio: 1.73 - Maximum Drawdown: -19.63% - Calmar Ratio: 1.60 - Last Week Performance: 3.15% - Year-to-Date (YTD): 28.79%[32] Absolute Return ETF Simulation Portfolio - **Model Name**: Absolute Return ETF Simulation Portfolio - **Model Construction Idea**: The asset allocation weights are mainly calculated based on the recent trends of various assets, with stronger trend assets assigned higher weights. The internal equity asset allocation weights directly adopt the monthly views of the monthly frequency industry rotation model[34] - **Model Construction Process**: The model's latest holdings include dividend style ETFs and ETFs related to pharmaceuticals, non-ferrous metals, media, steel, and energy chemicals[36] - **Model Evaluation**: The model has risen by 0.34% last week and has accumulated a 5.69% return this year[34] - **Model Testing Results**: - Annualized Return: 6.52% - Annualized Volatility: 3.81% - Maximum Drawdown: 4.65% - Sharpe Ratio: 1.71 - Calmar Ratio: 1.40 - Year-to-Date (YTD): 5.69% - Last Week Performance: 0.34%[39] Global Asset Allocation Simulation Portfolio - **Model Name**: Global Asset Allocation Simulation Portfolio - **Model Construction Idea**: Predict future returns of global major assets using a cycle three-factor pricing model, and construct the portfolio using a "momentum selects assets, cycle adjusts weights" risk budgeting framework[40] - **Model Construction Process**: The strategy currently overweights bonds and foreign exchange, with higher risk budgets assigned to assets such as Chinese bonds and US bonds[40] - **Model Evaluation**: The strategy has achieved an annualized return of 7.22% in the backtest period, with a Sharpe ratio of 1.50[40] - **Model Testing Results**: - Annualized Return: 7.22% - Annualized Volatility: 4.82% - Maximum Drawdown: -6.44% - Sharpe Ratio: 1.50 - Calmar Ratio: 1.12 - Year-to-Date (YTD): -3.04% - Last Week Performance: 0.61%[41] Quantitative Factors and Construction Methods Sentiment Indicators - **Factor Name**: Sentiment Indicators - **Factor Construction Idea**: Construct sentiment indicators from the perspectives of the put-call ratio, implied volatility, and basis in the options and futures markets[2] - **Factor Construction Process**: - **Put-Call Ratio**: Observe the ratio of the trading volume of call options to put options in the 50ETF and 500ETF options markets[17] - **Implied Volatility**: Construct the implied volatility ratio series of call and put options[20] - **Basis**: Construct the annualized basis rate weighted by the open interest for the four major stock index futures products[26] - **Factor Evaluation**: The sentiment indicators show that the previous overheating sentiment in the A-share market has continued to ease[2] Factor Backtesting Results Sentiment Indicators - **Put-Call Ratio**: The ratio has significantly fallen from the high levels observed on July 23, indicating a more rational market sentiment[17] - **Implied Volatility Ratio**: Despite the stock market rebound last week, the implied volatility ratio of call options to put options has been trending downward, further reflecting rational investor sentiment[20] - **Annualized Basis Rate**: The basis rate has been fluctuating downward, indicating rational sentiment in the futures market[26]
华福金工:从行业轮动到热点轮动再到热点龙头股轮动的演绎
Huafu Securities· 2025-08-09 12:00
Core Conclusions - The speed of market rotation has significantly accelerated, with the rotation index dropping to 61.95% in 2025, and the duration of hot themes shortening, with most themes lasting less than or equal to 20 days [3][4] - The relationship between rotation speed and funding structure indicates that during accelerated rotation, financing balances are highly synchronized with the index, while during slower rotations, financing responses lag [3][14] - Based on the alpha158 factor, derived strategies were constructed for wind hot rotation, industry rotation, and hot index mapping leading stocks. The index rotation strategy achieved an annualized return of 20.25%, outperforming industry rotation at 16.03% [3][4] Industry Rotation Effective Factors - Quantile factors (QTLU/QTUD) are identified as effective for industry rotation, with support momentum (QTUD) being more effective in bear markets and resistance momentum (QTLU) in bull markets [3][4] - The proportion of positive volatility (SUMN) indicates stronger industry strength, while extreme value factors (RSV/MAX) are sensitive to hot themes [3][4] Hot Index Rotation Optimization - The analysis utilized 68 Wind hot indices, focusing on core factors such as quantile factors (QTLU_20_95) and residual ranking factors (RESI30, RANK20) which have shown high win rates in recent years [4][6] - The adjustment strategy involves T+1 closing for rebalancing to mitigate factor decay, with the top 5 components of hot indices yielding an annualized return of 15.79%, significantly outperforming the CSI 300 [4][6] Strategy Application - For industry rotation holdings in 2025, high-frequency positions include banking, automotive, and non-ferrous metals, with recent additions in coal and basic chemicals [4][6] - Hot index holdings for July 2025 included semiconductor, lithium mining, and energy equipment, while automotive parts and liquor indices were removed [4][6] Market Rotation Dynamics - The analysis indicates that the speed of rotation is influenced by the structure of market participation funds, with rapid rotation correlating with high retail participation and financing balance synchronization [14][18] - In contrast, slower rotation reflects a dominance of institutional funds, leading to a significant lag in financing balances compared to index gains [14][18] Performance of Hot Rotation Strategies - The report suggests that in recent years of rapid hot rotation, short-term trend strategies are more likely to achieve excess returns [21][27] - The effectiveness of the index rotation has been higher than that of industry rotation in the past three years, indicating a shift in alpha generation from broader industry to more granular segments [27][28]
军工行业有望进入长期增长周期,高端装备ETF(159638)一键布局行业轮动机会
Xin Lang Cai Jing· 2025-08-07 06:05
Core Viewpoint - The high-end equipment sector is experiencing mixed performance, with significant movements in specific stocks and a positive long-term outlook for the military industry driven by technological advancements and increased defense spending [1][3][4]. Group 1: Market Performance - As of August 7, 2025, the CSI High-End Equipment Sub-Index decreased by 0.80%, with stocks showing varied performance; 712 led with an increase of 8.65%, while Guorui Technology saw the largest decline [1]. - The high-end equipment ETF (159638) had a turnover rate of 4.57% and a transaction volume of 54.32 million yuan, with an average daily transaction volume of 63.18 million yuan over the past week [3]. Group 2: ETF Performance - The latest scale of the high-end equipment ETF reached 1.198 billion yuan, with a net value increase of 33.28% over the past year [3]. - Since its inception, the ETF has recorded a highest single-month return of 19.30%, with the longest consecutive monthly gains being three months and a maximum increase of 21.15% [3]. Group 3: Industry Outlook - Recent reports indicate that the domestic military construction is transitioning towards "intelligent and unmanned" systems, with global military trade demand expanding, suggesting a long-term growth cycle for the military industry [3]. - The recent successful launch of the Pakistan Remote Sensing Satellite 01 demonstrates the maturity and stability of China's aerospace technology, while the successful flight of the Kuaizhou-1A rocket reinforces the high prosperity of the aerospace equipment sector [3]. Group 4: Key Stocks - As of July 31, 2025, the top ten weighted stocks in the CSI High-End Equipment Sub-Index accounted for 46.03% of the index, with notable companies including AVIC Shenyang Aircraft Company and Aero Engine Corporation of China [4]. - The performance of key stocks varied, with AVIC Shenyang Aircraft Company down by 2.36% and Aerospace Electronic Technology up by 2.08% [6]. Group 5: Investment Opportunities - Investors can consider the CSI High-End Equipment Sub-Index ETF linked fund (018028) for potential industry rotation opportunities [6].
微幸福:流动性牛市?
Xin Lang Ji Jin· 2025-08-07 03:33
Group 1 - The core viewpoint of the articles is that the current market exhibits characteristics of a "water buffalo" market, defined as a divergence between fundamentals and liquidity [1] - The first report from CITIC Securities reviews historical instances of such divergence since 2010, noting that significant macro policies or liquidity improvements typically drive short-lived rallies lasting no more than four months [1] - The second report from GF Securities analyzes historical liquidity-driven bull markets, categorizing them into rapid rotation periods and sustained mainline periods [1][3] Group 2 - During the rapid rotation period, various styles can lead, but the sustainability is weak, with financial and cyclical sectors often initiating the rally due to their low valuations and sensitivity to policy changes [3] - In the sustained mainline period, despite no overall improvement in fundamentals, certain sectors may see enhanced expectations due to policy support or industry cycles, becoming strong market leaders [4] - The current A-share market is characterized by rapid sector rotation, with various themes emerging quickly, making it challenging for investors to capture opportunities effectively [4] Group 3 - The Shanghai Composite Index has surpassed 3600 points, yet many investors remain uncertain about stable investment choices [5] - In this environment, broad-based indices are recommended for investment as they cover a wide range of sectors, reducing the risk of missing out on market gains [5] - The introduction of the CSI A500 index provides a new option for core portfolio allocation, offering a more balanced industry distribution compared to the CSI 300 index [5][7] Group 4 - The CSI A500 index has a higher content of new productive forces, with a reduced weight in traditional sectors like non-bank financials and food & beverage, allowing for greater growth potential [7] - Historical data shows that the CSI A500 index has outperformed the CSI 300 index in various market conditions, demonstrating its adaptability [9] - Long-term holding of the CSI A500 index is expected to yield higher returns compared to short-term holding, with a reported increase of 363.05% since its inception [11]
行业轮动周报:ETF资金偏谨慎流入消费红利防守,银行提前调整使指数回调空间可控-20250804
China Post Securities· 2025-08-04 07:00
Quantitative Models and Construction Methods 1. Model Name: Diffusion Index Model - **Model Construction Idea**: The model is based on the principle of price momentum, aiming to capture upward trends in industry performance[26][39] - **Model Construction Process**: The diffusion index is calculated for each industry, reflecting the proportion of stocks within the industry that exhibit positive momentum. The index ranges from 0 to 1, where higher values indicate stronger momentum. The model selects industries with the highest diffusion indices for allocation. For example, as of August 1, 2025, the top-ranked industries included Steel (1.0), Comprehensive Finance (1.0), and Non-Banking Finance (0.999)[27][28] - **Model Evaluation**: The model has shown mixed performance over the years. While it achieved significant excess returns in 2021 (up to 25% before September), it experienced notable drawdowns in 2023 (-4.58%) and 2024 (-5.82%) due to its inability to adjust to market reversals[26] 2. Model Name: GRU Factor Model - **Model Construction Idea**: This model leverages GRU (Gated Recurrent Unit) deep learning networks to process high-frequency volume and price data, aiming to identify industry rotation opportunities[40] - **Model Construction Process**: The GRU network is trained on historical minute-level data to predict industry factor rankings. The model then allocates to industries with the highest predicted rankings. As of August 1, 2025, the top-ranked industries included Non-Banking Finance (-1.15), Steel (0.7), and Base Metals (0.5)[34][38] - **Model Evaluation**: The model has demonstrated strong adaptability in short-term scenarios but struggles in long-term or extreme market conditions. Its performance in 2025 has been hindered by concentrated market themes, resulting in difficulty capturing inter-industry excess returns[33][40] --- Backtesting Results of Models 1. Diffusion Index Model - **Weekly Average Return**: -1.67%[30] - **Excess Return (August)**: -0.44%[30] - **Excess Return (2025 YTD)**: -0.40%[25][30] 2. GRU Factor Model - **Weekly Average Return**: 0.00%[38] - **Excess Return (August)**: 0.16%[38] - **Excess Return (2025 YTD)**: -2.35%[33][38] --- Quantitative Factors and Construction Methods 1. Factor Name: Diffusion Index - **Factor Construction Idea**: Measures the breadth of positive momentum within an industry[27] - **Factor Construction Process**: The diffusion index is calculated as the proportion of stocks in an industry with positive momentum. For example, as of August 1, 2025, the diffusion index for Steel was 1.0, while for Coal it was 0.23[27][28] - **Factor Evaluation**: The factor effectively identifies industries with strong upward trends but may underperform during market reversals[26] 2. Factor Name: GRU Industry Factor - **Factor Construction Idea**: Utilizes GRU deep learning to rank industries based on high-frequency trading data[40] - **Factor Construction Process**: The GRU network processes minute-level volume and price data to generate factor rankings. For instance, as of August 1, 2025, the GRU factor for Non-Banking Finance was -1.15, while for Steel it was 0.7[34][38] - **Factor Evaluation**: The factor is effective in capturing short-term trends but struggles in long-term or highly volatile markets[33][40] --- Backtesting Results of Factors 1. Diffusion Index Factor - **Top Industries (August 1, 2025)**: Steel (1.0), Comprehensive Finance (1.0), Non-Banking Finance (0.999)[27][28] - **Weekly Average Return**: -1.67%[30] - **Excess Return (August)**: -0.44%[30] - **Excess Return (2025 YTD)**: -0.40%[25][30] 2. GRU Industry Factor - **Top Industries (August 1, 2025)**: Non-Banking Finance (-1.15), Steel (0.7), Base Metals (0.5)[34][38] - **Weekly Average Return**: 0.00%[38] - **Excess Return (August)**: 0.16%[38] - **Excess Return (2025 YTD)**: -2.35%[33][38]