Core Viewpoint - As of August 28, the total margin balance for ETFs in the Shanghai and Shenzhen markets is 107.74 billion yuan, showing a decrease of 877 million yuan from the previous trading day [1] Summary by Category ETF Margin Balance - The ETF financing balance is 100.588 billion yuan, down by 1.167 billion yuan from the previous trading day [1] - The ETF margin short balance is 7.152 billion yuan, which increased by 290 million yuan compared to the previous trading day [1] Net Buy Activity - On August 28, 219 ETFs experienced net financing purchases, with the Bosera Sci-Tech Innovation Board Artificial Intelligence ETF leading with a net purchase amount of 278 million yuan [1] - Other ETFs with significant net buy amounts include the Harvest CSI Sci-Tech Innovation Board Chip ETF, GF CSI Hong Kong Innovative Medicine ETF, Huatai-PB Hang Seng Technology ETF, E Fund ChiNext ETF, and China Asset Management Hang Seng Internet Technology ETF, each exceeding 100 million yuan in net purchases [1]