Core Insights - On July 21, 18 Hong Kong-listed companies conducted share buybacks, totaling 13.67 million shares and an amount of 21.25 million HKD [1][2] Group 1: Buyback Details - China Eastern Airlines repurchased 2.944 million shares for 8.5194 million HKD, with a highest price of 2.910 HKD and a lowest price of 2.850 HKD, accumulating a total buyback amount of 584.30 million HKD for the year [1][2] - Mengniu Dairy repurchased 200,000 shares for 3.4207 million HKD, with a highest price of 17.120 HKD and a lowest price of 17.060 HKD, accumulating a total buyback amount of 231.29 million HKD for the year [1][2] - IGG repurchased 490,000 shares for 2.1160 million HKD, with a highest price of 4.360 HKD and a lowest price of 4.280 HKD, accumulating a total buyback amount of 49.88 million HKD for the year [1][2] Group 2: Buyback Rankings - The highest buyback amount on July 21 was from China Eastern Airlines at 8.5194 million HKD, followed by Mengniu Dairy at 3.4207 million HKD [1][2] - In terms of share quantity, the largest buyback was by Ying Group with 4 million shares, followed by China Eastern Airlines with 294,400 shares [1][2]