Group 1 - The HALO framework is a combination screening framework based on "industry attributes + financial constraints + factor scoring" aimed at identifying companies with long asset lifespans and slow elimination rates, focusing on real cash flow and capacity structure [6] - The HALO strategy emphasizes industries with strong performance elasticity, particularly in sectors with low iteration and elimination rates, where leading companies benefit from supply structure, cost transmission, and cash flow advantages [7] - The selection process begins with a broad sample, applying an industry whitelist filter before entering the financial scoring phase, ensuring financial comparisons are made within similar business models to reduce cross-industry distortions [8] Group 2 - The hard filtering rules include specific thresholds for various financial metrics, such as a ded_ratio greater than 0.7 and capex_ta less than 0.8, to filter out companies with extreme capital expansion or one-time earnings interference [11] - The HALO Score is calculated using a weighted sum of factor percentiles, ensuring minimal degrees of freedom to validate the HALO hypothesis and avoid overfitting within the sample [12] - The performance of the HALO strategy shows a portfolio end value of 3.26 with an annualized return of 12.37% and an annualized volatility of 26.54% [15] Group 3 - The portfolio selection statistics indicate a total of 4,279 stocks on August 31, 2022, with 301 HALO stocks selected, reflecting a mean score of 0.52, demonstrating the dynamic nature of the selection process over time [16] - The top 50 portfolio shows an end value of 3.43 with an annualized return of 13.2% and an annualized volatility of 26.7%, indicating strong performance metrics [18]