[analysis of midday trading on May 17] A total of 30 shares rose by the daily limit of May 17 in the two markets, with a total of 4 shares and 8 shares failed to close the board, with a closure rate of 79% (excluding St shares, delisted shares and unopened new shares). In terms of individual stocks, electric power stocks Hangzhou Thermal Power Board 4, mergers and acquisitions of Daily broadcast Fashion Board 4, smart grid plate Canaan Intelligent growth Enterprise Board 2, Daye Intelligent growth Enterprise Board, Apple MR concept stock Qingyue Science and Technology Board 2.