标普500指数ETF今日合计成交额6.39亿元，环比增加159.56%

Group 1 - The total trading volume of S&P 500 index ETFs today reached 639 million yuan, an increase of 393 million yuan compared to the previous trading day, representing a growth rate of 159.56% [1] - Specifically, the Guotai S&P 500 ETF (159612) had a trading volume of 554 million yuan today, which is an increase of 459 million yuan from the previous trading day, showing a growth rate of 484.12% [1] - As of market close, the average increase of ETFs tracking the S&P 500 index today was 0.10%, with the top performers being the Southern S&P 500 ETF (QDII) (513650) and Guotai S&P 500 ETF (159612), which rose by 0.12% and 0.11% respectively [1] Group 2 - The trading volume changes for S&P 500 index ETFs on September 2 are detailed, showing various funds' performance and trading volumes [1] - The Southern S&P 500 ETF (QDII) (513650) experienced a decrease in trading volume by 31 million yuan, with a decline rate of 41.54% [1] - The Huaxia S&P 500 ETF (QDII) (159655) also saw a decrease in trading volume by 35 million yuan, with a decline rate of 45.89% [1]