海泰发展振幅17.18%，上榜营业部合计净卖出5434.13万元

Summary of Key Points Core Viewpoint - Haitai Development (600082) experienced a significant decline of 5.30% in its stock price, with a trading volume of 6.33 billion yuan and a fluctuation of 17.18% on the day of reporting [2]. Trading Activity - The stock had a turnover rate of 21.79%, with a net sell-off of 54.34 million yuan from brokerage firms [2]. - The top five brokerage firms involved in trading accounted for a total transaction volume of 145 million yuan, with buying amounting to 45.36 million yuan and selling reaching 99.71 million yuan, resulting in a net sell-off of 54.34 million yuan [2]. Major Brokerage Firms - The largest buying brokerage was Zheshang Securities, which purchased 13.97 million yuan worth of shares, while the largest selling brokerage was Dongbei Securities, which sold shares worth 44.91 million yuan [2]. Fund Flow - The stock saw a net outflow of 158 million yuan in principal funds, with large orders contributing to a net outflow of 90.44 million yuan and big orders contributing to a net outflow of 67.42 million yuan [2]. - Over the past five days, the stock has experienced a total net outflow of 116 million yuan [2]. Financial Performance - The company reported its first-quarter earnings, showing a total revenue of 7.78 million yuan, which represents a year-on-year decline of 35.15%. The net profit for the quarter was -13.71 million yuan [2].