香港恒生指数5月19日（周一）开盘下跌188.78点，跌幅0.81%，报23156.27点；香港恒生科技指数5月19日（周一）开盘下跌53.8点，跌幅1.02%，报5227.54点；国企指数5月19日（周一）开盘下跌69.13点，跌幅0.82%，报8399.16点；红筹指数5月19日（周一）开盘下跌3.46点，跌幅0.09%，报3831.24点。

Market Performance - The Hang Seng Index opened on May 19, 2023, down by 188.78 points, a decline of 0.81%, closing at 23,156.27 points [1] - The Hang Seng Tech Index opened down by 53.8 points, a decrease of 1.02%, closing at 5,227.54 points [1] - The China Enterprises Index opened down by 69.13 points, a drop of 0.82%, closing at 8,399.16 points [1] - The Red Chip Index opened down by 3.46 points, a slight decline of 0.09%, closing at 3,831.24 points [1]