龙虎榜丨通宇通讯跌8.3%，作手新一净卖出1.29亿元

Group 1 - The core point of the article is that Tongyu Communication (002792.SZ) experienced a significant drop of 8.3% after a previous surge, with a turnover rate of 45.54% and a transaction volume of 4.698 billion yuan [1] - The net selling by the Northbound trading was 53.07 million yuan, with a total buy of 108 million yuan and a sell of 161 million yuan [1] - The top speculator, "Zuoshu Xin Yi," ranked second in selling, with a net sell of 129 million yuan [1] Group 2 - Institutional investors bought a total of 187 million yuan and sold 116 million yuan, resulting in a net buy of 70.71 million yuan [1] - The top five trading departments accounted for a total buy amount of 41.79785 million yuan, representing 8.90% of the total transaction volume [2] - The top buying department, Northbound trading, contributed 10.7714 million yuan, accounting for 2.29% of the total transaction [2]