上交所：本周对*ST岩石、*ST正平、*ST精伦等异常波动退市风险警示股票进行重点监控

Core Viewpoint - The Shanghai Stock Exchange has implemented self-regulatory measures against 158 cases of abnormal trading behaviors, including price manipulation and false declarations, highlighting increased scrutiny on specific stocks and funds [1] Group 1: Regulatory Actions - The Shanghai Stock Exchange took self-regulatory measures against 158 cases of abnormal trading behaviors from February 24 to February 27 [1] - Stocks under special risk warning for abnormal fluctuations include *ST Yan Shi, *ST Zheng Ping, and *ST Jing Lun [1] - The exchange is closely monitoring funds with high premiums, such as the China-Korea Semiconductor ETF [1] Group 2: Investigations and Reporting - The exchange conducted special investigations into 7 major events related to listed companies [1] - One case of suspected illegal activities has been reported to the China Securities Regulatory Commission [1]