Cambricon(SH:688256) Di Yi Cai Jing·2025-09-07 05:12Group 1 - The adjustment of the STAR Market 50 Index sample stocks will take place after the market closes on September 12, which includes the popular stock Cambricon [2] - Cambricon's recent significant stock price decline is perceived to be related to its weight exceeding 10% in the STAR 50 Index, potentially forcing passive funds to reduce their holdings [2][3] - The Shanghai Stock Exchange's educational video addresses investor concerns regarding the index weight adjustment and its implications for stock prices [3] Group 2 - The STAR Market Index undergoes quarterly adjustments to ensure its representativeness and enhance the investability of index products, with rules published in advance [3] - The individual stock weight limit of 10% is a common practice both domestically and internationally, aimed at reducing concentration and preventing the index from being overly influenced by a few stocks [3] - Concerns about large-scale ETF sell-offs due to weight reductions are addressed, indicating that fund companies typically adjust their holdings gradually and consider market liquidity [4] Group 3 - The funds that flow out from a stock due to weight reduction will be redistributed among other index samples, maintaining the overall fund scale [5] - Investors are advised not to overly worry about short-term volatility, as the core value of index funds lies in tracking long-term returns rather than reacting to short-term adjustments [6]