大为股份今日跌3.02%，3家机构专用席位净卖出1.15亿元

Group 1 - The stock of Dawi Co., Ltd. (002213) decreased by 3.02% today [1] - The trading volume reached 3.227 billion yuan, with a turnover rate of 51.31% [1] - Post-market data indicates that one institutional special seat net bought 38.3369 million yuan, while three institutional special seats net sold 115 million yuan [1]