创业板指冲高回落涨0.1%，创业板ETF（159915）交投活跃，半日成交额超25亿元

Group 1 - The core viewpoint of the news highlights the strong performance of CPO and PCB concepts, which led to increased activity in the ChiNext market, with the ChiNext Growth Index rising by 0.2% and the ChiNext Index increasing by 0.1% as of the midday close [1] - The ChiNext 200 Index experienced a decline of 1.2% during the same period, indicating mixed performance among different segments of the ChiNext market [1] - The trading volume for the ChiNext ETF (159915) exceeded 2.5 billion yuan during the half-day session, reflecting significant investor interest [1] Group 2 - The ChiNext ETF tracks the ChiNext Index, which consists of 100 stocks with large market capitalization and good liquidity, with a high proportion of strategic emerging industries, particularly in the power equipment, communication, and electronics sectors, which together account for 60% of the index [3] - The ChiNext 200 ETF by E Fund tracks the ChiNext Mid-Cap 200 Index, which includes 200 stocks with medium market capitalization and relatively good liquidity [3]