寒武纪权重为啥下调，会引发资金砸盘吗？权威解答→

Group 1 - The core point of the article discusses the adjustment of the weight of stocks in the Sci-Tech Innovation Board 50 Index, particularly focusing on the stock Cambrian (688256.SH), which has seen a significant price drop due to its weight exceeding 10% in the index [2][3] - The adjustment of the index is a regular action conducted quarterly to ensure the representativeness of the index and enhance the investability of index products [2][4] - The reason for the 10% weight limit on individual stocks is to reduce concentration and prevent the index from being overly influenced by a few stocks, a practice common in both domestic and international indices [3][4] Group 2 - Concerns about large-scale ETF sell-offs due to weight reduction are addressed, indicating that ETF adjustments are typically made close to the implementation date and consider market liquidity, thus minimizing drastic impacts [5][6] - The funds that are redistributed due to the weight adjustment will remain within the index, ensuring that the overall fund size remains unchanged, which is described as "肥水不流外人田" [6] - 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 fluctuations [7]