小米集团盘初一度涨超3%，此前宣布启动25亿自动回购计划

Group 1 - The core point of the article is that Xiaomi Group announced a share buyback plan of up to HKD 2.5 billion for its Class B ordinary shares, which is expected to boost investor confidence and support the stock price [1] Group 2 - The buyback plan will commence on January 23 and will continue until the day before the 2026 annual general meeting of shareholders, or until the total amount reaches HKD 2.5 billion, or if the agreement is terminated early, whichever occurs first [1]