港股三大指数集体高开，宁德时代高开逾12%，小米集团领涨恒生科技成分股

Group 1 - The Hong Kong stock market opened higher on May 20, with the Hang Seng Index rising by 0.28% to 23,398.35 points, the Hang Seng Tech Index up by 0.22%, and the National Enterprises Index increasing by 0.31% [1] - Pharmaceutical stocks experienced a collective surge, while shipping and port stocks also saw broad gains. Notably, Contemporary Amperex Technology Co., Ltd. (CATL) opened over 12% higher [1] - The Hang Seng Technology Index ETF (513180) saw a slight increase, with leading stocks such as Xiaomi, Li Auto, SMIC, Alibaba, and JD Health showing significant gains, while stocks like Alibaba Health, Bilibili, and Trip.com Group faced declines [1] Group 2 - Tianfeng Securities predicts that the release of Xiaomi's self-developed chip may accelerate changes in the competitive landscape of high-end domestic smartphones, with market share growth for leading manufacturers with self-research capabilities being a core logic for Xiaomi's valuation increase [2] - Xiaomi's years of investment in self-research across smartphones, operating systems, and chips are beginning to pay off, with synergistic effects expected to drive developments in its automotive business [2] - The Hang Seng Technology Index ETF (513180) leads in both scale and liquidity among its peers listed in A-shares, supporting T+0 trading, and includes core AI assets and technology leaders that are relatively scarce compared to A-shares [2]