Group 1 - The Hong Kong Stock Exchange has implemented a new stock trading fee structure starting from June 30, which eliminates the previous minimum fee of 2 HKD and maximum fee of 100 HKD [1] - The adjustment is related to the Hong Kong market's policy to lower the minimum price fluctuation unit for buying and selling stocks, significantly reducing trading costs for small transactions [1] - For example, a transaction of 1000 HKD previously incurred a minimum fee of 2 HKD, resulting in a high fee ratio of 0.2%. Under the new structure, the fee ratio is reduced to 0.0042%, equating to 0.042 HKD, marking a substantial decrease in costs [1] Group 2 - The removal of minimum and maximum fee limits allows institutional investors to more accurately calculate trading costs and optimize trading strategies, aiding in better cost control during large-scale transactions [1] - The new regulations still require fees to be charged on both buy and sell sides of the transaction [1]