Group 1 - The core point of the article is that *ST Chengchang (sz001270) hit the daily limit down on February 11, 2026, with a closing price of 127.33 yuan, reflecting a decline of 5% and a total market capitalization of 26.245 billion yuan [1][2]. Group 2 - The reasons for the limit down of *ST Chengchang include: 1) Company-specific risk factors such as being under delisting risk warning, with potential termination of listing if it fails to meet any delisting standards by 2025 [2]. 2) Market environment factors indicating abnormal volatility, which reflects unstable market sentiment and heightened investor sensitivity to risks [2]. 3) Concept and sector conditions, where *ST Chengchang is part of the TR chip concept, and despite the acceleration of the commercial aerospace industry, the overall market environment may have negatively impacted its stock price [2]. 4) Recent capital and technical aspects showing net selling by retail and institutional investors, indicating short-term capital outflow which may have affected market bullish sentiment [2].