盛屯矿业今日跌停，有4家机构专用席位净卖出3.91亿元

Group 1 - The stock of Shengtun Mining experienced a limit down, with a trading volume of 3.107 billion yuan and a turnover rate of 6.68% [1] - The Shanghai Stock Connect special seat bought 323 million yuan and sold 81.167 million yuan [1] - Four institutional special seats had a net sell of 391 million yuan [1]