Group 1 - The stock of Huadian Co., Ltd. (002463) reached the daily limit, with a trading volume of 4.917 billion yuan and a turnover rate of 5.91% [1] - The data from the post-market dragon and tiger list indicates that the Shenzhen Stock Connect special seat bought 545 million yuan and sold 334 million yuan, resulting in a net purchase of 211 million yuan [1] - Two institutional special seats had a net sell of 87.2498 million yuan [1] Group 2 - There is a notable influx of dark pool funds into several stocks, indicating potential investment interest [1]