金字火腿第二季度业绩大降，年内股价涨幅超60%，原因是什么？

Group 1 - The core viewpoint of the article highlights the significant decline in Jinzi Ham's performance in the first half of 2025, with a revenue drop of 14.73% year-on-year and a net profit decrease of 25.11% [1] - In the second quarter of 2025, the company's performance worsened, showing a revenue decline of 38.85% year-on-year and a net loss of 1.4167 million yuan, marking a staggering decline of 120.35% [1] - Despite the poor financial performance, the company's stock price increased by over 60% year-to-date, with a market capitalization of approximately 8.8 billion yuan as of August 29, 2025 [1] Group 2 - The article notes a change in the actual controller of Jinzi Ham, with Ren Guilong transferring 145 million shares to Zheng Qingsheng for a total price of 870 million yuan in June 2025 [1] - Following the change in control, the company began to venture into the semiconductor industry, establishing a wholly-owned subsidiary, Fujian Jinzi Semiconductor Co., Ltd., with a registered capital of 100 million yuan on July 28, 2025 [1] - Additionally, on July 2, 2025, Jinzi Ham set up Jinzi Chip (Shanghai) Technology Co., Ltd. with a registered capital of 8 million yuan, and on August 5, 2025, the controlling shareholder of Jinzi Chip changed to Jinzi Semiconductor [1]