收评：沪指涨0.83%，券商板块爆发，新型电池概念等拉升

Market Performance - On the 15th, both stock indices rose across the board, with the Shanghai Composite Index briefly surpassing 3700 points and the ChiNext Index increasing by nearly 3% [1] - By the close, the Shanghai Composite Index rose by 0.83% to 3696.77 points, the Shenzhen Component Index increased by 1.6% to 11634.67 points, and the ChiNext Index climbed by 2.61% to 2534.22 points [1] - The total trading volume in the A-share market exceeded 2 trillion yuan for three consecutive days, with a combined turnover of 22732 billion yuan across the Shanghai, Shenzhen, and Beijing stock exchanges [1] Sector Performance - The brokerage sector saw significant gains, while sectors such as semiconductors, non-ferrous metals, automobiles, chemicals, insurance, and real estate also experienced upward movement [1] - Active sectors included liquid cooling servers, PCB concepts, new battery technologies, and photolithography machine concepts [1] Market Trends - Dongguan Securities noted that the market continues to show an expanding trading trend, but with rapid index increases, some differentiation has emerged at high levels, leading to a general pullback in previously high-performing sectors [1] - The market is experiencing profit-taking pressure due to accumulated gains from prior increases, alongside historical trapped positions affecting upward momentum [1] - Despite short-term technical adjustments, the core logic supporting a positive outlook for A-shares remains unchanged in the medium term [1]