大盘震荡调整，关注A500ETF易方达（159361）、沪深300ETF易方达（510310）等投资价值

Market Overview - A-shares experienced a collective adjustment in the morning session, with sectors such as Hainan Free Trade Zone, oil and gas extraction and services, coal mining and processing, short drama games, papermaking, banking, and private hospitals showing significant gains [1] - Conversely, sectors including batteries, non-ferrous metals, photolithography machines, semiconductors, CPO, and PCB concepts faced notable declines [1] - The Hong Kong stock market showed a fluctuating upward trend, with the innovative drug concept experiencing a surge, while coal and banking sectors also posted gains, and technology stocks saw slight declines [1] - By midday, the CSI A500 index fell by 0.7%, the CSI 300 index decreased by 0.5%, the ChiNext index dropped by 1.4%, and the STAR Market 50 index declined by 2.4%, while the Hang Seng China Enterprises Index rose by 0.7% [1] Index Composition - The ChiNext index, tracked by the ChiNext ETF, consists of 100 stocks from the ChiNext market that have 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 nearly 60% [3] - The STAR Market 50 index, tracked by the STAR Market 50 ETF, includes 50 stocks from the STAR Market with large market capitalization and good liquidity, featuring significant characteristics of technology leaders, with semiconductors accounting for over 65%, and combined with medical devices and software development, these sectors account for nearly 80% [3] - The H-share ETF represents the Hong Kong stock market's broad-based index [3]