午评：沪指跌0.15% 油气开采及服务板块涨幅居前

Market Overview - The A-share market experienced a decline in the morning session, with the Shanghai Composite Index closing at 4110.86 points, down 0.15% [1] - The Shenzhen Component Index closed at 14230.97 points, down 0.17% [1] - The ChiNext Index closed at 3282.48 points, down 0.40% [1] Sector Performance - The oil and gas extraction and services sector led the gains with an increase of 4.75%, total trading volume of 1729.96 million hands, and a net inflow of 2.11 billion [2] - The military equipment sector rose by 3.02%, with a trading volume of 2463.12 million hands and a net inflow of 64.88 billion [2] - The photovoltaic equipment sector increased by 2.56%, with a trading volume of 1964.00 million hands and a net inflow of 30.35 billion [2] - Conversely, the precious metals sector saw a decline of 2.56%, with a trading volume of 1121.15 million hands and a net outflow of 14.11 billion [2] - The insurance sector decreased by 1.20%, with a trading volume of 147.57 million hands and a net outflow of 16.78 billion [2] - The semiconductor sector fell by 1.15%, with a trading volume of 3363.66 million hands and a net outflow of 95.90 billion [2]