上交所：本周对*ST锦港等退市风险警示股票、中毅达等严重异常波动股票进行重点监控

Group 1 - The Shanghai Stock Exchange has taken regulatory measures such as written warnings against 241 cases of abnormal trading behaviors including price manipulation and false declarations [1] - Stocks under risk warning for delisting, such as *ST Jinguang, and those with severe abnormal fluctuations like Zhongyida, are under key monitoring [1] - The exchange has conducted special investigations into 25 major events of listed companies and reported 3 suspected illegal cases to the China Securities Regulatory Commission [1]