A股主要指数集体开低。[1]其中创业板指跌幅最为突出，开盘跌3.12%，随后扩大至午间收盘跌5.37%；沪指开盘跌0.91%，午间收盘跌0.98%；深成指开盘跌2.25%，午间收盘跌3.42%；科创综指开盘跌2.3%，午间收盘跌4.07%。[1]
上市仅一日的长鑫科技表现波动剧烈。[1]该股昨日首日上市大涨465.82%，今日开盘随即跳水，跌幅逾7%至45.22元，之后有所回升，午间收盘跌1.63%。[1]长鑫科技27日以IPO形式正式上市，募集资金总额约579亿元人民币，是今年以来A股市场募资规模最大的IPO。[1]上市首日，该股成交额达1411.87亿元，成为A股历史上首支单日成交额突破千亿元的个股，并成为A股市值最高公司。[1]作为中国最大的DRAM制造商及全球第四大DRAM厂，长鑫存储的此次上市创造了A股多项新纪录。[1]
China's main stock indices opened lower across the board on July 28, 2023, with the ChiNext Index experiencing the steepest decline.[1] Changxin Technology, which surged 465.82% on its debut the previous day, opened down 7.71% at 45.22 yuan, though it recovered somewhat to close at a loss of 1.63% by midday.[1] The Shanghai Composite Index fell 0.98%, the Shenzhen Component Index dropped 3.42%, the ChiNext Index declined 5.37%, and the Sci-Tech Innovation Index fell 4.07% at midday trading.[1]
Changxin Technology completed its initial public offering on July 27, raising approximately 579 billion yuan, marking the largest IPO fundraising in the A-share market this year.[1] The company set multiple records in its debut, becoming the first individual stock to exceed 1 trillion yuan in single-day trading volume with total trading volume of 1,411.87 billion yuan, and claimed the position of China's highest market-value listed company.[1] As the nation's largest DRAM manufacturer and the world's fourth-largest DRAM producer, Changxin Technology's stock reflected broader market volatility affecting technology and innovation-focused indices.[1]