Group 1 - The Hang Seng Index fell by 1.52% on October 13, with a total southbound trading volume of HKD 227.017 billion, including HKD 123.411 billion in buying and HKD 103.606 billion in selling, resulting in a net buying amount of HKD 19.804 billion [1] - The southbound trading through Stock Connect (Shenzhen) had a total trading volume of HKD 78.738 billion, with net buying of HKD 12.206 billion, while the trading through Stock Connect (Shanghai) had a total volume of HKD 148.279 billion and net buying of HKD 7.598 billion [1] - Alibaba-W had the highest trading volume among southbound stocks, totaling HKD 32.298 billion, followed by SMIC and Xiaomi Group-W with HKD 17.721 billion and HKD 15.323 billion respectively [1] Group 2 - Among the active stocks, the top net buying stock was the Tracker Fund of Hong Kong with a net buying amount of HKD 7.282 billion, despite a closing price drop of 1.56% [2] - Xiaomi Group-W and ZTE Corporation had the longest consecutive net buying days, with 6 and 3 days respectively, and the highest net buying amounts of HKD 4.709 billion and HKD 1.673 billion [2] - The stocks with the highest net selling amounts included Tencent Holdings with HKD 2.445 billion, Alibaba-W with HKD 1.624 billion, and SMIC with HKD 0.524 billion [2]