- The style rotation model is constructed based on micro-level stock factors, including valuation, market capitalization, volatility, and momentum. It utilizes 80 base factors to generate 640 micro features, replacing absolute proportion division of style factors with common indices as style stock pools. Random forest is employed for rolling training to avoid overfitting, enabling feature selection and style recommendation. The framework integrates style timing, scoring, and investment implementation[3][8][9] - The performance of the style rotation model during the backtesting period (2017/01/01-2025/08/31) shows an annualized return of 17.08%, annualized volatility of 20.07%, IR of 0.85, monthly win rate of 55.77%, and maximum drawdown of -29.89%. When hedging against the market benchmark, the annualized return is 10.42%, annualized volatility is 13.03%, IR is 0.80, monthly win rate is 56.73%, and maximum drawdown is -9.57%[9][10] - The style rotation model's September 2025 timing direction focuses on growth, large-cap, momentum, and high-volatility factors[17] - The latest holdings of the style rotation model for September 2025 include ETFs such as Semiconductor Leaders ETF (159665.SZ), Big Data ETF (159739.SZ), Artificial Intelligence ETF (159819.SZ), Fintech ETF (159851.SZ), and 5G ETF (159994.SZ)[2][20]

Group 1: Market Performance - Fund holdings outperformed northbound holdings, with the Fund Heavy 50 index leading at 3.01%[11] - The overall market momentum remains high, with industry and style rotation speeds sustained at elevated levels[4] - The healthcare and telecommunications sectors showed the highest gains, while financial and real estate sectors experienced pullbacks[19] Group 2: Investment Styles and Themes - Small-cap and high-volatility stocks are favored, with the "Growth+" series leading the performance[21] - The Chengdu-Chongqing regional development and the "East Data West Computing" initiatives are the leading themes in the market[25] - The cumulative return for small-cap and growth indices has been the highest since the beginning of 2025[21]