Group 1 - The engineering construction industry rose by 0.83% on August 15, with a net outflow of 186 million yuan in main funds [1] - A total of 46 constituent stocks increased in value, while 16 stocks experienced declines [1] - The stocks with the highest net outflow of main funds included Shanghai Port Construction (122 million yuan), China Power Construction (63.84 million yuan), and China State Construction (53.33 million yuan) [1] Group 2 - Notable stocks with significant net inflows included North International (7.04% increase, 72.38 million yuan), China National Machinery (4.12% increase, 56.64 million yuan), and Donghu High-tech (2.35% increase, 53.53 million yuan) [1] - The stock performance varied, with some stocks like Chengdu Road and Bridge showing a slight decline of 0.19% [1] - The overall market sentiment reflected a mixed performance among the engineering construction sector, with both gains and losses observed [1]