机构上调多只半导体及食品饮料个股评级

Group 1 - The core viewpoint of the article highlights that multiple semiconductor and food & beverage stocks have received upgraded ratings from various institutions [1] - In May, a total of 71 institutions conducted 5,151 ratings, with 1,859 stocks receiving a "buy" rating, which includes buy, overweight, strong buy, and recommended [1] - The semiconductor sector saw several stocks, including Zhongwei Semiconductor, Shengke Communication, Weicai Technology, and Naxin Micro, being upgraded to "buy" ratings [1] Group 2 - Additionally, certain food and beverage stocks, such as Lianhua Holdings, Bairun Co., and Dongpeng Beverage, also received rating upgrades, with their latest ratings being "buy" [1]