A股收盘：沪指窄幅震荡微涨，电力股集体爆发

Overall Market Performance - The Shanghai Composite Index experienced a narrow fluctuation throughout the day, closing up by 0.02% at 3473.13, while the Shenzhen Component Index fell by 0.70% to 10435.51, and the ChiNext Index dropped by 1.21% to 2130.19 [1][2] Sector Performance - The cross-border payment and stablecoin concepts were notably active, with stocks such as Zhongyi Technology, Jingbeifang, and Xinyada hitting the daily limit up [1] - Real estate stocks saw a midday surge, with companies like Yudai Development, Shahe Shares, and Nanshan Holdings also reaching the daily limit up [1] - Conversely, the innovative drug sector experienced a pullback, with Kexing Pharmaceutical declining over 14% [1] Popular Concepts - Power stocks surged against the trend, with nearly ten stocks including Shaoneng Shares, Huayin Electric, and Shimao Energy hitting the daily limit up [1]