12月16日增减持汇总：丽尚国潮等3股增持 孚能科技等5股减持（表）

Group 1: Stock Buybacks - On December 16, several companies announced share buybacks, including Nova Star Cloud, which plans to repurchase shares worth between 75 million to 150 million yuan [2][3] - Action Education intends to buy back shares valued at 20 million to 25 million yuan [2][3] - The controlling shareholder of Ketone Style Wine plans to increase its stake by no less than 1% of the total share capital [2][3] Group 2: Stock Reductions - Ningbo Color Master announced that shareholders plan to reduce their holdings by no more than 1.29% of the company's shares [2][3] - The actual controller and its concerted parties of Saiwei Microelectronics intend to reduce their holdings by no more than 1% [2][3] - Dekeli's board members plan to sell no more than 100,000 shares [2][3] - Huashi Co. shareholders plan to reduce their holdings by no more than 2% [2][3] - Funeng Technology shareholders plan to reduce their holdings by no more than 2% [2][3]