Huan Qiu Wang·2025-09-13 02:12Group 1 - The core point of the news is the adjustment of the STAR 50 Index samples, where "Qi An Xin" is replaced by "Sheng Yi Electronics" [1] - The adjustment is expected to increase the turnover rate of the STAR 50 ETF and raise the requirements for timing in portfolio rebalancing [3] - The maximum weight of a single sample in the STAR 50 Index is capped at 10%, and the combined weight of the top five samples is limited to no more than 40% [3] Group 2 - The stock price of Cambrian has significantly increased since the third quarter, leading to its weight rising to around 15%, which will now be adjusted down to no more than 10% [3] - The combined weight of the top five samples, including Cambrian, SMIC, Haiguang Information, Lanke Technology, and Micro Technology, has also been reduced to no more than 40% [3] - This adjustment effectively mitigates the risk of excessive concentration of index weight in a few industries and companies [3]