2月24日至2月27日，上交所共实施监管措施158起

Core Viewpoint - The Shanghai Stock Exchange has implemented self-regulatory measures against 158 cases of abnormal trading behaviors, including price manipulation and false declarations, focusing on stocks with delisting risk warnings and high premium funds [1] Group 1: Regulatory Actions - The Shanghai Stock Exchange has taken self-regulatory measures against 158 cases of abnormal trading behaviors from February 24 to February 27 [1] - Specific stocks under scrutiny include *ST Yanshi, *ST Zhengping, and *ST Jinglun, which are flagged for abnormal volatility and delisting risk warnings [1] - The exchange is also monitoring the Korea-China Semiconductor ETF due to its high premium [1] Group 2: Investigations and Reporting - The exchange has 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]