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Judging from the market performance, the average growth rate of 41 key sector stocks since September 18 is close to 56%, far outperforming the performance of the broader market in the same period. Among them, two stocks of Xinxiangwei and SMIC doubled. Xinxiangwei's main business focuses on the research, development, design and sales of display chips, and is committed to providing complete display chip system solutions.It is worth mentioning that among the stocks with a market value of less than 10 billion yuan, Kaikai Industry, Fudan Fuhua, First Hospital and Xuantai Medicine all belong to the biomedical industry. Among the state-owned shares in Shanghai, Hua Hong Company and Hehui Optoelectronics -U belong to the semiconductor industry.From the perspective of institutional attention, Zhongwei Company and Weir Co., Ltd. have more than 30 institutional ratings, while Hengxuan Technology, Lanqi Technology, UIH Medical and Microelectrophysiology -U have more than 20 institutional ratings.

After-hours big profits are related to mergers and acquisitions, restructuring, Shanghai state-owned shares have these.Shanghai state-owned companies are expected to directly benefit from the action plan. According to the statistics of Securities Times and Data Treasure, there are 37 A-shares owned by Shanghai State-owned Assets with a market value of less than 10 billion yuan. Among them, the market value of Kaikai Industrial, Chuangchuang International, First Pharmaceutical and other stocks is less than 3 billion yuan, and the market value of Yatong, Changjiang Investment, Changlian, Shanghai Jiubai and *ST Tianwo is less than 4 billion yuan.

Among them, the market value of chip leader SMIC A shares exceeded 170 billion yuan, ranking first. According to the data, SMIC is one of the world's leading integrated circuit wafer foundry enterprises, and it is a professional wafer foundry enterprise with advanced technology, the largest scale, the most complete supporting services and transnational operation.