午评：沪指窄幅震荡，燃气、石油等板块拉升，海南自贸概念等活跃

Market Overview - The Shanghai Composite Index experienced a slight decline of 0.16%, closing at 4022.89 points, while the Shenzhen Component Index fell by 1.1%, the ChiNext Index dropped by 1.74%, and the STAR Market 50 Index decreased by 1.5% [1] - The total trading volume across the Shanghai and Shenzhen markets reached 12,469 billion [1] Sector Performance - Sectors such as semiconductors, food and beverage, and liquor showed weakness, while gas, oil, pharmaceuticals, real estate, and banking sectors saw gains [1] - The Hainan Free Trade Zone and innovative drug concepts were particularly active [1] Investment Insights - Pacific Securities noted that the current absorption rate for technology stocks has fallen below 25%, indicating a release in chip congestion, although the time frame remains insufficient [1] - It is expected that technology stocks will exhibit differentiated performance moving forward, with those lacking earnings support likely to experience significant corrections, while those with earnings support, such as storage, will maintain upward momentum [1] - The non-ferrous metals sector is benefiting from constrained supply and demand growth narratives driven by AI, making it a technically stronger sector at present [1] - The chemical sector is also showing upward movement due to narratives surrounding new energy and AI, presenting both safety margins and upside potential, warranting active attention [1]