收评：沪指冲高回落跌0.31%，两市成交额近4万亿

Market Overview - The market experienced a pullback after an initial rise, with the Shanghai Composite Index dropping by 0.31% by the end of the trading day [1] - The total trading volume in the Shanghai and Shenzhen markets reached 3.94 trillion yuan, an increase of 290.4 billion yuan compared to the previous trading day, marking the third consecutive day of exceeding 3.5 trillion yuan [1] Sector Performance - The AI application sector saw significant gains, with over 20 stocks hitting the daily limit, including Liou Co., which achieved six consecutive limit-ups in nine days, and Shengguang Group with four consecutive limit-ups [1] - The computing hardware concept surged in the afternoon, with Guangxun Technology hitting the daily limit and reaching a new high [1] - The semiconductor sector also performed well, with Yaxiang Integration hitting the daily limit and achieving a historical high [1] - The commercial aerospace concept showed localized activity, with Haige Communication achieving three consecutive limit-ups and several other stocks like Datang Telecom and Jiayuan Technology hitting the daily limit [1] Declining Sectors - The energy metals, insurance, and banking sectors experienced the largest declines, with the lithium mining concept notably dropping, leading to Guocheng Mining hitting the daily limit down [1]