On September 17, 2025, the technology and semiconductor sectors emerged as the top performers in the Hong Kong stock market. Baidu Group's shares soared by over 15%, NIO's stock climbed more than 11%, SMIC witnessed a rise exceeding 7%, and Alibaba's shares gained over 5%. In contrast, the building materials and non-ferrous metals sectors experienced significant declines. On the same day, southbound capital registered a net purchase of 9.441 billion Hong Kong dollars.