总市值百亿元，上市公司董事长74岁母亲准备套现，减持股份市值超3亿元

Core Viewpoint - The controlling shareholder of Power Diamond, Li Aizhen, plans to reduce her stake by up to 7.63 million shares, representing 3% of the total share capital, due to personal financial needs [1][2]. Group 1: Shareholder Actions - Li Aizhen intends to sell shares within three months, with a maximum of 1% through centralized bidding and 2% through block trading [1]. - Currently, Li Aizhen holds 36 million shares, accounting for 14.15% of the company, making her the second-largest shareholder [1][2]. - Prior to this reduction, neither Li Aizhen nor the chairman, Shao Zengming, had sold any shares this year [2]. Group 2: Stock Performance - Power Diamond's stock price increased by 52.39% over nine trading days from October 9 to October 21, which may have influenced the decision to sell [2]. - Despite a recent adjustment with a cumulative decline of 10.22% in the last two trading days, the company's market capitalization remains at 11.27 billion [4]. Group 3: Company Achievements and Financial Performance - Power Diamond is recognized as a leading supplier of superhard materials in China, with advanced capabilities in diamond products [4]. - The company recently announced the successful cultivation of the world's largest diamond, weighing 156.47 carats, which set a new record [4]. - However, the company's financial performance has been disappointing, with a 36.43% year-on-year decline in revenue to 242 million and an 82.52% drop in net profit to 25.91 million for the first half of 2025 [5].