上交所：对*ST亚振等异常波动风险警示股票，以及上纬新材、西藏旅游、南方路机等严重异常波动股票进行重点监控

Group 1 - The Shanghai Stock Exchange (SSE) has taken regulatory measures against 270 cases of abnormal trading behaviors, including price manipulation and false declarations, from July 28 to August 1, 2025 [1] - Stocks with abnormal volatility, such as *ST Yazhen, are under risk warning, while stocks like Xiwai New Materials, Tibet Tourism, and Southern Road Machinery are under close monitoring due to severe abnormal fluctuations [1] - The SSE has conducted special investigations into 18 major events of listed companies and reported 2 suspected illegal cases to the China Securities Regulatory Commission [1]