A股三大股指早盘集体收涨，关注A500ETF易方达（159361）、沪深300ETF易方达（510310）等后续表现

Market Overview - The A-share market saw all three major indices rise in the morning session, with a total market turnover of 1.88 trillion yuan, an increase of 670 billion yuan compared to the previous day [1] - The sectors leading the gains included lithium batteries, liquor, insurance, innovative drugs, and non-ferrous metals, while technology sectors such as semiconductors, computing power, lithography machines, and AI faced declines [1] Index Performance - The CSI A500 Index rose by 0.7% by midday, while the CSI 300 Index increased by 0.6% [1] - The ChiNext Index experienced a significant rise of 2.3%, contrasting with a decline of 2.5% in the Shanghai Stock Exchange Science and Technology Innovation Board 50 Index [1] - The Hang Seng China Enterprises Index also saw an increase of 0.7% [1] ETF Tracking - The CSI 300 Index is composed of 300 stocks with good liquidity from the Shanghai and Shenzhen markets, covering 11 first-level industries, with a current valuation of 14.1 times earnings [3] - The CSI A500 Index consists of 500 liquid stocks from various industries, covering 91 out of 93 third-level industries, with a valuation of 16.5 times earnings [3] - The ChiNext Index, which includes 100 liquid stocks from the ChiNext market, has a high concentration in strategic emerging industries, with a current valuation of 40.2 times earnings [3] - The Shanghai Stock Exchange Science and Technology Innovation Board 50 Index is made up of 50 liquid stocks, predominantly in the technology sector, with a high valuation of 190.3 times earnings [3] - The Hang Seng China Enterprises Index includes 50 large-cap, actively traded stocks from mainland companies listed in Hong Kong, with a valuation of 10.3 times earnings [3]