Zhong Zheng Wang·2026-01-16 13:19Group 1 - The Shanghai Stock Exchange has monitored stocks with significant volatility, including *ST Zhengping, *ST Yazhen, Guosheng Technology, Aerospace Power, Tianpu Co., and Shuangwei New Materials, from January 12 to January 16 [1] - *ST Zhengping experienced a cumulative decline of 14.24% over three consecutive trading days from January 12 to January 14, followed by a near limit-up on January 15 and a drop of 4.92% on January 16 [1] - *ST Yazhen saw a cumulative increase of 43.74% from December 17, 2025, to January 8, 2026, with limit-up performances on January 12 and January 16 [1] - Guosheng Technology's stock price deviated significantly, with a cumulative increase exceeding 20% over three consecutive trading days from January 12 to January 14, followed by two consecutive limit-downs [1] - Tianpu Co. faced consecutive limit-downs on January 12 and 13, a limit-down at the opening on January 14, and a limit-up at closing, followed by a limit-down on January 15 [1] Group 2 - Shuangwei New Materials has shown significant cumulative increases since July 2025, with multiple instances of abnormal volatility [2] - The Shenzhen Stock Exchange announced a trading suspension for some investors of *ST Chengchang due to severe abnormal stock price fluctuations, with a resumption of trading on January 16 after a halt for investigation [4] - *ST Chengchang's stock price has increased approximately 190.89% since December 1, 2025 [5] - From January 12 to January 16, the Shenzhen Stock Exchange took self-regulatory measures against 387 instances of abnormal trading behavior, including market manipulation and false declarations [5]