Xin Lang Cai Jing·2025-12-17 13:32Core Viewpoint - On December 17, several A-share listed companies disclosed their shareholding changes, with some announcing share buybacks while others reported share reductions by major shareholders [1][2]. Group 1: Share Buybacks - Shijian Detection plans to increase its shareholding by 8 million to 12 million yuan [3]. - Huakai Yibai intends to repurchase shares worth 15 million to 30 million yuan [3]. - China Zhongzhi plans to buy back A-shares worth 1 billion to 2 billion yuan [3]. Group 2: Share Reductions - Huayi Brothers' shareholding by Alibaba's investment arm and its concerted parties has dropped below 5% [4]. - Aojie Technology completed a share reduction plan, reducing its total share capital by 3% [4]. - Shareholder Strai of Zhonglun New Materials plans to reduce its stake by no more than 2% [4]. - Shareholder Wang Xianggao of Dayang Biology intends to reduce his stake by no more than 0.68% [4]. - Shareholders of Sanwei Tiandi plan to collectively reduce their holdings by no more than 3.07% [4]. - Directors and executives of Changying Precision plan to reduce their holdings by no more than 0.0281% [4]. - The controlling shareholder of Zhaobiao Co. plans to reduce its stake by no more than 3% [4]. - Jin Feng Technology has completed its reduction plan for Harmony Health Insurance's universal products [4]. - Hubble Investment's stake in Tianyue Advanced has decreased to 5% [4]. - Shareholder Yagor Garment of Shengtai Group plans to reduce its stake by no more than 3% [4]. - Shareholder Cao Lianying of Xingye Co. intends to reduce his stake by no more than 1% [4].