2月1日增减持汇总：歌尔股份等2股增持 芯原股份减持（表）

Group 1 - Company Qizhou Dongfeng proposed a share buyback of 50 million to 100 million yuan [3] - Company Goer Group increased the total amount for share buyback to no less than 1 billion yuan and no more than 1.5 billion yuan [3] - Company Chip Origin disclosed a reduction in shareholding [1]