1月14日增减持汇总：梅花生物等2股增持 航天发展等18股减持（表）

Group 1 - On January 14, 18 A-share listed companies disclosed share reduction situations, including companies like Aerospace Development, Caida Securities, and Guangting Information [1][2] - Meihua Biological's executives plan to increase their holdings by 300 million to 350 million yuan [2] - Guangting Information's general manager mistakenly reduced his holdings by 6,625 shares but repurchased 6,800 shares on January 14 [2] Group 2 - Aerospace Development's largest shareholder, China Aerospace System Engineering Co., recently reduced its holdings by 20.64 million shares [2] - Caida Securities' shareholder Tangshan Port intends to reduce its holdings by no more than 1% [2] - Other companies like Anheng Information, Qingmu Technology, and Jida Zhengyuan also announced share reductions, with some shareholders planning to reduce their stakes by up to 3% [2]