隧道股份(600820.SH)：城建集团共计增持2.00%的公司A股股份

Group 1 - The core point of the article is that Tunnel Corporation (隧道股份) has completed a share buyback plan initiated by Shanghai Construction Group, resulting in the acquisition of 62.88 million A-shares, which represents 2.00% of the total share capital of the company [1] - The total amount spent on the share buyback was approximately RMB 399 million, excluding transaction fees [1]