A股收盘：沪指微跌，算力硬件股集体爆发

Group 1 - The core viewpoint of the news highlights the mixed performance of the stock market, with the Shanghai Composite Index down 0.01%, the Shenzhen Component Index up 0.19%, and the ChiNext Index down 0.29% [1] - Nvidia reported a significant revenue increase of 73% year-on-year for Q4 of fiscal year 2026, reaching $68.1 billion, surpassing analyst expectations of $65.684 billion, alleviating concerns about an "AI bubble" and demonstrating strong ongoing demand for AI [1] - Several stocks in the computing hardware sector surged, including Fenghuo Communication, Chuanrun Co., Shenzhen South Circuit, and Dazhu Laser, which all hit the daily limit [1] Group 2 - The power and grid equipment sector also saw gains, with stocks like Gan Energy, Shunhua Power, Huayin Power, and Xinlian Electronics reaching their daily limit [1] - In contrast, the film industry stocks continued to decline, with Bona Film Group nearing a daily limit down [1] - A total of 78 stocks hit the daily limit up, while 5 stocks hit the daily limit down, with over 2,800 stocks in the Shanghai and Shenzhen markets showing declines [1]