中证800指数ETF今日合计成交额1.30亿元，环比增加38.39%

Group 1 - The core viewpoint of the article highlights a significant increase in trading volume for the CSI 800 Index ETF, with a total trading volume of 130 million yuan, representing a week-on-week increase of 35.96 million yuan, or 38.39% [1] - Specifically, the Tianfu CSI 800 ETF (515800) recorded a trading volume of 116 million yuan, up by 40.64 million yuan from the previous trading day, marking a week-on-week increase of 53.73% [1] - The CSI 800 Index (000906) rose by 2.06% at market close, while the average increase for related ETFs tracking the CSI 800 Index was 1.72%, with notable performers including Tianfu CSI 800 ETF (515800) and E Fund CSI 800 ETF (515810), which increased by 1.92% and 1.90% respectively [1] Group 2 - The trading volume changes for various ETFs on January 5 are detailed, showing that the Tianfu CSI 800 ETF (515800) had the highest increase in trading volume and percentage change among the listed funds [1] - Other ETFs such as Penghua CSI 800 ETF (159800) and E Fund CSI 800 ETF (515810) experienced declines in trading volume, with decreases of 3.69 million yuan (5.30%) and 155.57 million yuan (12.74%) respectively [1] - The 800 Enhanced ETF (159517) saw a significant drop in trading volume by 309.32 million yuan, equating to a 60.47% decrease [1]