Group 1 - The stock price of Yishitong is reported at 27.43 yuan as of August 20, 2025, reflecting a decrease of 1.93 yuan or 6.57% from the previous trading day [1] - The opening price on the same day was 28.68 yuan, with a highest point of 28.68 yuan and a lowest point of 26.94 yuan, resulting in a trading volume of 227,300 hands and a transaction amount of 627 million yuan [1] - Yishitong operates in the non-metallic materials industry, focusing on new energy materials and electronic communication materials, with applications in lithium batteries and electronic components [1] Group 2 - From August 7 to August 20, a total of 6 overseas institutions conducted research on Yishitong, while 137 institutions engaged in research over the last 5 trading days (August 13 to August 19) [1] - On August 20, the net outflow of main funds from Yishitong was 186 million yuan, accounting for 3.39% of the circulating market value, with a cumulative net outflow of 300 million yuan over the past 5 days, representing 5.47% of the circulating market value [1]