Core Viewpoint - The report tracks the performance of a long-term stock selection strategy focusing on profitability and growth, which was initially published by the GF Financial Engineering team on August 26, 2020 [3][30]. Empirical Analysis - The backtesting period for the strategy spans from January 1, 2009, to October 31, 2025, with three rebalancing periods each year on April 30, August 31, and October 31 [5]. - The equal-weighted strategy achieved a cumulative return of 3458.94% and an annualized return of 23.55%, significantly outperforming the CSI 800 index, which had a cumulative return of 179.16% during the same period [6][31]. - The average number of stocks held in the portfolio was approximately 55, with an average market capitalization of around 14 billion [23][31]. - The strategy's annualized volatility relative to the CSI 800 index was 13.63%, with an information ratio of 1.19 [12][13]. Sector Distribution - The sectors with the highest frequency of stock selections included pharmaceuticals, chemicals, electronics, machinery, and food and beverages, while sectors like leisure services, construction, defense, steel, and non-bank financials were selected less frequently [26][31]. Market Capitalization Weighted Strategy - The market capitalization weighted strategy yielded a cumulative return of 2553.16% and an annualized return of 21.42%, with a relative annualized excess return of 13.88% compared to the CSI 800 index [14][21]. - The annualized volatility for the market capitalization weighted strategy was 14.17%, with an information ratio of 1.00 [21][22]. Summary - The report provides a comprehensive follow-up on the long-term stock selection strategy, emphasizing the importance of profitability and growth as key variables in stock selection, and highlights the strong performance of both equal-weighted and market capitalization weighted strategies [30][31].

Core Viewpoint - The report tracks the performance of a long-term stock selection strategy focused on profitability and growth, which was initially published on August 26, 2020, by the GF Financial Engineering team [2][29]. Empirical Analysis Data Description - The empirical analysis covers a backtesting period from January 1, 2009, to August 29, 2025, with three portfolio adjustments each year on April 30, August 31, and October 31 [3]. Portfolio Construction - The stock selection process emphasizes high ROE, improving gross profit margins, and strong cash flow, while excluding stocks with poor cash flow and high debt ratios [4]. Equal-Weighted Portfolio Performance - The equal-weighted portfolio achieved a cumulative return of 3281.94% and an annualized return of 23.43% during the backtesting period, outperforming the CSI 800 index, which had a cumulative return of 169.89% [5][30]. - The equal-weighted strategy had an annualized volatility of 13.67% and an information ratio of 1.19 [13]. Market Capitalization-Weighted Portfolio Performance - The market capitalization-weighted portfolio recorded a cumulative return of 2330.56% and an annualized return of 21.02%, also outperforming the CSI 800 index [15]. - The market capitalization-weighted strategy had an annualized volatility of 13.86% and an information ratio of 1.00 [22]. Portfolio Holding Characteristics - On average, each portfolio iteration consisted of approximately 55 stocks, with an average market capitalization of around 14 billion [26][30]. - The most frequently selected sectors included pharmaceuticals, chemicals, electronics, machinery, and food and beverage, while sectors like leisure services and defense had fewer selections [26][30].