CPO、PCB概念股集体大涨，创业板指半日涨1.8%，关注创业板ETF易方达（159915）等产品投资机会

Group 1 - The article discusses three ETFs managed by E Fund that track different indices of the ChiNext market, focusing on their low fee rates and performance metrics [2] - The ChiNext Index consists of 100 stocks with high market capitalization and liquidity, primarily in emerging industries, with nearly 60% of its composition in the power equipment, communication, and electronics sectors [2] - The ChiNext 200 ETF tracks the ChiNext Mid-Cap 200 Index, which includes 200 stocks with medium market capitalization and liquidity, with over 40% of its composition in the information technology sector [2] - The ChiNext Growth ETF follows the ChiNext Growth Index, comprising 50 stocks characterized by strong growth potential and good liquidity, with nearly 85% of its composition in the communication, power equipment, electronics, computer, and pharmaceutical sectors [2] Group 2 - As of the latest trading session, the ChiNext Index showed a change of 1.8% with a rolling price-to-earnings ratio of 42.1 times [2] - The ChiNext 200 Index experienced a change of 1.0% with a rolling price-to-earnings ratio of 113.0 times [2] - The ChiNext Growth Index had a change of 2.4% with a rolling price-to-earnings ratio of 40.7 times [2]