硬科技再度走强，科创50指数一度涨近3%，科创50ETF易方达（588080）半日成交额超13亿元

Group 1 - The article discusses various ETFs tracking the Shanghai Stock Exchange Science and Technology Innovation Board indices, highlighting their focus on high-growth sectors such as semiconductors, medical devices, and software development [2][3] - The Science and Technology Innovation 50 ETF tracks the top 50 stocks with significant market capitalization and liquidity, with over 65% of its composition in the semiconductor sector [2] - The Science and Technology Innovation 100 ETF focuses on 100 mid-cap stocks, with over 75% in the electronics, power equipment, and pharmaceutical industries [2] - The comprehensive index ETF covers all market securities on the Science and Technology Innovation Board, focusing on core industries like artificial intelligence and new energy, with a rolling P/E ratio of 219.7 times [2][3] - The Growth Index tracks 50 stocks with high growth rates in revenue and net profit, with over 65% in the electronics and communication sectors, and a rolling P/E ratio of 197.6 times [3] Group 2 - The article mentions that the low fee rate for these ETFs is 0.15% per year for management fees and 0.05% per year for custody fees [4] - The indices mentioned have been published at different times, with the Science and Technology Innovation 50 Index launched on July 23, 2020, and the Science and Technology Innovation 100 Index on August 7, 2023 [4]