Report Summary 1) Report Industry Investment Rating No information provided in the given content. 2) Core Viewpoints - The rotation wind vane consists of option market sentiment and traditional capital - related parts, and their resonance forms large/small - cap strength signals. Daily long - short operations on large and small caps can be carried out according to the signals, or use IM as the underlying position and adjust style exposure when the signal indicates that small caps are weak to achieve index enhancement. The September 2025 latest rotation wind vane signal shows option sentiment 1 and capital aspect - 1, suggesting to wait and see [1]. 3) Summary by Related Content Performance of Sub - strategies from 2025/4/1 - 2025/9/4 - For the 300/1000 long - short strategy, the interval return is 8.56%, the annualized return is 20.72%, the Calmar ratio is 5.39%, and the maximum drawdown is 3.84 [2]. - For the 1000 index enhancement strategy, the interval return is 13.21%, the annualized return is 32.93%, the Calmar ratio is 6.58%, and the maximum drawdown is 5.00 [2]. - For the CSI 1000, the interval return is 13.08%, the annualized return is 32.57%, the Calmar ratio is 12.44%, and the maximum drawdown is 2.62 [2].