A股三大指数集体收跌 超5100只个股下行

A股市场15日出现全面调整，三大指数齐声走低。1沪指收跌1.59%1，深证成指下跌2.43%1，创业板指下跌2.92%1。盘中上证综指一度跌破3700点2。全市超过5100只个股下跌1，总成交额达1.65万亿元1。

市场跌幅呈现明显的板块分化。存储芯片、海运、通信设备、房地产、航天军工、半导体等板块普遍承压下行1，其中记忆体大厂长鑫科技股价大跌5.24%2，收于43.59元2。该公司总市值跌至2.96万亿元，低于工商银行的3.03万亿元及建设银行的3万亿元2，失去上市后2个半月内获得的总市值第一宝座2。相比之下，白酒、电信、券商、保险等板块则逆市上涨1。

China's three major stock indices fell sharply on October 15, with the Shanghai Composite Index dropping 1.59%, the Shenzhen Component Index declining 2.43%, and the ChiNext Index falling 2.92%12. Over 5,100 individual stocks traded lower on the day1, with total trading volume reaching 1.65 trillion yuan1.

The Shanghai Composite Index closed at 3,707.48 points after dipping below 3,700 during intraday trading2. Among major sectors, memory chips, shipping, telecommunications equipment, real estate, aerospace and defense, and semiconductors led the declines1. In contrast, liquor stocks, telecommunications, securities, and insurance sectors bucked the market trend and advanced1.

The market weakness was particularly evident in memory chip manufacturer Changxin Technology, whose stock plummeted 5.24% to close at 43.59 yuan, with its market capitalization falling below 3 trillion yuan2. This marked the end of the company's reign as China's most valuable listed company, having held the top position for approximately two and a half months since its listing debut2. Industrial and Commercial Bank of China and China Construction Bank, with market capitalizations of 3.03 trillion yuan and 3 trillion yuan respectively, have now surpassed Changxin Technology2.