Zheng Quan Shi Bao Wang·2025-05-21 14:12Core Viewpoint - On May 21, the Shanghai Composite Index rose by 0.21%, with institutional investors appearing on the trading lists of 26 stocks, net buying 12 and net selling 14 [1][3]. Institutional Trading Summary - The stock with the highest net buying by institutional seats was Shutaishen, which closed at the daily limit with a trading volume of 507 million yuan and a turnover rate of 8.01%, resulting in a net buying of 64.96 million yuan [2][4]. - Zhongyou Technology saw a closing increase of 18.18%, with a turnover rate of 23.29% and a trading volume of 728 million yuan, leading to a net buying of 45.04 million yuan [2][4]. - Wangzi New Materials closed up 2.69% with a turnover rate of 62.73% and a trading volume of 2.675 billion yuan, resulting in a net buying of 37.12 million yuan [2][4]. Market Performance Analysis - The average increase of stocks with institutional net buying was 9.32%, outperforming the Shanghai Composite Index [3]. - Stocks like Shutaishen and Lingpai Technology showed strong performance, closing at the daily limit [3]. - Historical data indicates that stocks with institutional net buying have a 45.75% probability of rising the next day and a 41.04% probability of increasing over the next three days [3]. Net Selling Summary - The stock with the highest net selling by institutions was San Sheng Guo Jian, which closed up 19.99%, with a net selling of 48.37 million yuan [3][5]. - Lu Xiao Technology had a net selling of 28.59 million yuan, despite a net inflow of 580 million yuan for the day [3][5]. - Tie Liu Co., Ltd. experienced a net selling of 28.28 million yuan, with a net outflow of 11.58 million yuan [3][5]. Deep and Shanghai Stock Connect - On May 21, nine stocks on the trading list had appearances from the Deep and Shanghai Stock Connect, with net buying amounts of 24.53 million yuan for Hunan Development, 17.52 million yuan for San Sheng Guo Jian, and 12.15 million yuan for Huaxia Happiness [6][7]. - Stocks with net selling included Guoxuan High-Tech, with a net selling amount of 249.66 million yuan [6][7].