券商自营老鼠仓，一分没赚倒罚470万

Core Viewpoint - The article discusses a recent case of insider trading involving a securities firm executive, highlighting the ongoing issue of "rat trading" within the industry and the regulatory actions taken against such practices [1][6]. Summary by Sections Case Details - The Heilongjiang Securities Regulatory Bureau imposed a total fine of 4.7 million yuan on Tang Mouming, the former general manager of a securities firm's investment department, for three violations: trading based on undisclosed information, suggesting others to trade, and illegal stock trading as a securities professional [4][6]. - Tang's violations included controlling accounts to conduct synchronized trading on 177 stocks, with a total investment of 5.51 billion yuan, which accounted for 77.54% of his total buying amount [8]. Violations Breakdown - The first violation involved insider trading from November 2022 to June 2023, where Tang used undisclosed information to trade [8]. - The second violation included suggesting others, specifically individuals named Xing and Xie, to trade based on undisclosed information, leading to a total synchronized trading amount of 2.12 billion yuan [9]. - The third violation was related to illegal stock trading as a securities professional, with a total investment of 1.4 billion yuan in various stocks [10]. Industry Context - The article notes that Tang's case is not an isolated incident, as there have been at least three other cases of securities professionals engaging in similar misconduct this year [11]. - Other notable cases include a senior manager at CITIC Securities who was fined 4.26 million yuan for using client information for personal trading and a case involving a high-ranking official at Xiangcai Securities with fines totaling 18.42 million yuan [12][13]. - The regulatory bodies are intensifying their scrutiny of insider trading practices, with new guidelines being proposed to manage the investment behaviors of key personnel in the securities industry [13].