Group 1 - The overall performance of ETFs on September 15 showed mixed results, with some ETFs experiencing significant gains while others faced declines [1] - The Integrated Circuit ETF (159546) saw a notable increase of 8.29%, indicating strong investor interest in this sector [1] - The Specialized and New Technology ETF (563210) rose by 4.77%, reflecting positive sentiment towards specialized technology companies [1] Group 2 - The Shenzhen 100 ETF (159216) increased by 4.45%, suggesting a favorable market environment for large-cap stocks in the Shenzhen market [1] - Conversely, the Cloud 50 ETF (560660) decreased by 2.23%, indicating potential challenges or profit-taking in the cloud computing sector [1] - The Communication ETF (159695) and Vaccine Leader ETF (561920) also experienced declines of 2.01% and 1.94% respectively, highlighting a broader trend of weakness in these sectors [1]