暴涨1645%大牛股，被上交所予以监管警示

Group 1 - The company has established a wholly-owned subsidiary with a business scope that includes artificial intelligence, which may lead to market speculation despite the company having no plans to engage in AI-related business [2] - The company's stock price has experienced significant fluctuations, with multiple abnormal trading activities prompting risk warning announcements, indicating that the main business has not undergone significant changes [2] - The Shanghai Stock Exchange has issued a regulatory warning to the company and its executives for failing to provide accurate and complete information disclosure regarding the establishment of the subsidiary and its implications [2] Group 2 - In 2025, the company's stock price surged from 12.59 yuan per share at the beginning of the year to 218.02 yuan per share by year-end, resulting in a cumulative increase of 1645.35% [3] - On December 30, 2025, the company announced a cumulative stock price increase of 718.39% from August 22 to December 30, leading to a suspension of trading for further investigation [4] - The company received a regulatory letter on December 31, 2025, regarding suspected violations of information disclosure, involving not only the company but also its directors, executives, and controlling shareholders [4]