16倍牛股，大利空！证监会：立案调查！

Core Viewpoint - Tianpu Co., Ltd. has encountered a "black swan" event due to abnormal stock price fluctuations and is under investigation by the China Securities Regulatory Commission (CSRC) for significant omissions in disclosures [3]. Group 1: Company Background and Stock Performance - Tianpu Co., Ltd. experienced a remarkable stock price increase of 1663.20% in 2025, making it the second-best performing stock of the year [5]. - The stock price surged 718.39% from August 22, 2025, to December 30, 2025, following announcements regarding a potential change in control involving AI chip design company Zhonghao Xinying [5]. - The stock was subject to multiple trading suspensions due to hitting the daily limit up, with a continuous rise observed from August 22 to September 23, 2025, and again from October 16 to November 27, 2025 [4]. Group 2: Regulatory Actions and Investigations - The CSRC has initiated an investigation into Tianpu Co., Ltd. for abnormal stock trading and significant omissions in their disclosures [3]. - Prior to the CSRC's investigation, Tianpu Co. and some former executives received regulatory warnings from the Shanghai Stock Exchange for inadequate risk disclosures related to the establishment of a subsidiary involved in AI [6][7]. - The establishment of the subsidiary, Tianpu Xincai, which was registered to engage in integrated circuit design and AI-related services, raised concerns about misleading market speculation regarding the company's business direction [6][7].