Core Viewpoint - On August 21, several A-share listed companies disclosed their shareholding changes, with Yinzuo Co. announcing a plan to increase its stake, while ten other companies, including Guomai Technology and Zhen Shitong, revealed plans to reduce their holdings [1][2]. Group 1: Shareholding Increase - Yinzuo Co.'s controlling shareholder intends to increase their stake by 1%-2% [2]. Group 2: Shareholding Decrease - Guomai Technology plans to sell 1.54% of its repurchased shares [2]. - Zhen Shitong's shareholders plan to reduce their holdings by up to 3% [2]. - Jibite's vice chairman Chen Tuolin intends to reduce his stake by no more than 0.347% [2]. - Hongte Technology's shareholder Wu Xiaomin plans to decrease his holdings by up to 1% [2]. - Tongfei Co.'s shareholder Zhonghe Ying plans to reduce holdings by up to 764,400 shares [2]. - Boji Medical's controlling shareholder Gan Qinchun and his concerted parties plan to reduce their holdings by up to 3% [2]. - Lvdiaofeng's shareholder Zhenzhong Investment plans to decrease holdings by up to 1% [2]. - Tanjing's major shareholder Gan Jing plans to reduce his stake by up to 0.5% [2]. - Zhongyin Securities' Jiangxi Copper intends to reduce its holdings by no more than 3% [2]. - Hengbang Co. plans to opportunistically reduce its stake by up to 3.69% of its total share capital [2].