Group 1 - On December 12, 50 Hong Kong-listed companies conducted share buybacks, totaling 35.48 million shares and an amount of 883 million HKD [1][2] - Tencent Holdings repurchased 1.044 million shares for 636 million HKD, with a year-to-date total buyback amount of 73.044 billion HKD [1][2] - China COSCO Shipping repurchased 4.461 million shares for 60.86 million HKD, with a year-to-date total buyback amount of 6.339 billion HKD [1][2] - Geely Automobile repurchased 1.362 million shares for 23.92 million HKD, with a year-to-date total buyback amount of 139 million HKD [1][2] Group 2 - The highest buyback amount on December 12 was from Tencent Holdings at 636 million HKD, followed by China COSCO Shipping at 60.86 million HKD [1][2] - The largest number of shares repurchased on December 12 was by Jinxin Fertility, with 7.722 million shares, followed by China Feihe and China COSCO Shipping with 5.655 million shares and 4.461 million shares respectively [1][2] - The buyback prices for Tencent Holdings ranged from a high of 616.00 HKD to a low of 601.50 HKD [1][2]