On January 20th, *ST Chengchang opened high and quickly surged to its daily limit-up, but its share price fluctuated and declined during the session. After the market reopened in the afternoon, *ST Chengchang continued to trend lower, hitting the跌停板 (daily limit-down),上演了一场"天地板" (a dramatic swing from limit-up to limit-down). As of the time of writing, *ST Chengchang was locked at the跌停板, quoted at 128.66 yuan, with a turnover exceeding 1.6 billion yuan.

Since December 1st, 2025, the share price of *ST Chengchang has experienced a significant surge, earning it the market title of a recent high-flying stock in the commercial aerospace sector. Information shows the company's primary business involves the research and development, production, sales, and technical services of microwave and millimeter-wave phased array T/R chips.

On the evening of January 16th, the Shenzhen Stock Exchange stated that the share price of "*ST Chengchang" had recently shown严重异常波动 (severely abnormal fluctuations). The company suspended trading for verification and issued a risk warning announcement. After resuming trading on January 16th, its share price continued to hit the limit-up. The exchange noted that some investors exhibited abnormal trading behaviors affecting the normal order of stock trading during transactions of this stock and, according to regulations, took self-regulatory measures such as suspending trading against the relevant investors.

Following its resumption of trading on January 16th, where it experienced a "地天板" (a dramatic swing from limit-down to limit-up), the stock surged to the daily limit-up once again on January 19th.