The Hang Seng Index opened down 138.08 points, or 0.58%, at 23,513.79 on Thursday, October 22. The Hang Seng Tech Index opened down 45.75 points, or 1.15%, at 3,949.02. The H-share Index opened down 55.9 points, or 0.7%, at 7,887.51. The Red Chip Index opened down 8.83 points, or 0.22%, at 3,931.03.