Summary of Key Points Core Viewpoint - On September 12, a total of 91 stocks were traded on the block trading platform, with a cumulative trading volume of 472 million shares and a total transaction amount of 6.889 billion yuan, indicating active trading in the market [1]. Group 1: Major Transactions - The highest transaction amount was for Shanghai Pudong Development Bank, with 2 transactions totaling 4.531 billion yuan [1]. - Following closely was Guangqi Technology, which had 3 transactions amounting to 224 million yuan [1]. Group 2: Stock Performance - Shanghai Pudong Development Bank experienced a price drop of 3.68%, closing at 13.60 yuan, with a transaction price of 13.81 yuan, reflecting a premium of 1.54% [1]. - Guangqi Technology saw a slight decline of 0.89%, closing at 46.82 yuan, with a transaction price of 45.65 yuan, indicating a discount of 2.50% [1]. - Hengli Petrochemical and Huichuan Technology also reported declines of 1.91% and 1.26%, respectively, with closing prices of 16.96 yuan and 79.68 yuan [1]. Group 3: Notable Gainers - Shengguang Technology and Sanxia Tourism reported gains of 0.47% and 10.03%, closing at 339.58 yuan and 7.02 yuan, respectively [1]. - Other notable gainers included Huatu Shanding and Cambrian Technology, with increases of 3.38% and 7.28%, closing at 71.90 yuan and 1488.00 yuan [1].