Huan Qiu Wang·2025-09-12 14:03Group 1 - The core adjustment of the STAR 50 Index involves the replacement of one sample stock, with "Qi Anxin" being removed and "Shengyi Electronics" being added, effective after the market closes on September 12, 2025 [1] - The adjustment is expected to enhance the turnover rate of the fund, indicating a need for more precise timing in portfolio rebalancing [3] - The STAR 50 Index has specific rules limiting the maximum weight of a single sample to 10% and the combined weight of the top five samples to no more than 40%, which aims to prevent excessive concentration in a few industries or companies [4] Group 2 - The weight of "Han's Laser" has increased to approximately 15% due to a significant rise in its stock price since the third quarter, necessitating a reduction in its weight to comply with index rules [4] - The combined weight of the top five samples, including "Han's Laser," "SMIC," "Haiguang Information," "Lanke Technology," and "Zhongwei Company," will be adjusted to not exceed 40% [4]