Cambricon(SH:688256) Guo Ji Jin Rong Bao·2025-09-16 15:49Group 1 - The core viewpoint of the news is that the adjustment of the STAR Market 50 Index has led to a significant decrease in the weight of Cambricon Technologies, which has raised concerns about the future performance of the index [1][2] - Cambricon's weight in the STAR Market 50 Index increased from 8.63% at the end of June to 15.4% due to a substantial rise in its stock price during the third quarter, exceeding the index's limit of 10% for a single constituent [1] - Following the adjustment, Cambricon's weight in the index has dropped to around 11%, and it is no longer the largest constituent, with the top five constituents now accounting for approximately 42% of the index [1] Group 2 - An industry insider indicated that passive index funds had already begun adjusting their holdings in response to the sample adjustment announcement made on August 29, prior to the effective date of September 12 [2] - Data from Wind shows that the related ETFs for the STAR Market 50 have maintained a slight increase in the days following the sample adjustment, indicating limited impact from the changes [2] - Liu Youhua, a wealth research director, stated that the recent optimization of the STAR Market 50 Index enhances its overall representativeness and alleviates previous concentration issues, suggesting that the index still holds medium to long-term investment value despite short-term market volatility [4]