The provided content does not contain any quantitative models or factors, nor does it include their construction, evaluation, or backtesting results. The documents primarily focus on market performance, sector analysis, institutional activity, and other financial metrics without delving into quantitative modeling or factor analysis.

Group 1 - The ETF market opened with mixed performance on August 29, with notable gains and losses among various ETFs [1] - The Science and Technology Innovation Board Index ETF (兴银, 589580) saw a significant increase of 19.71% [1] - The Bank of China Securities 500 ETF (中银证券, 515190) rose by 5.52%, while the A100 ETF from E Fund (易方达, 159686) increased by 4.46% [1] Group 2 - Conversely, the Science and Technology Innovation 50 Index ETF (科创50指数ETF, 588870) experienced a decline of 2.97% [1] - The Science and Technology Innovation 50 Enhanced ETF from Southern (南方, 588370) fell by 2.95% [1] - The Science and Technology Innovation 50 ETF from Invesco (景顺, 588950) decreased by 2.89% [1]