沪指、创业板指，双双创年内新高

Core Viewpoint - The A-share market experienced a strong performance with both the Shanghai Composite Index and the ChiNext Index reaching new highs for the year, driven by significant trading volume and a focus on infrastructure-related stocks [1][2]. Market Performance - The Shanghai Composite Index rose by 0.72%, the Shenzhen Component Index increased by 0.86%, and the ChiNext Index gained 0.87% by the end of the trading day [2]. - The total trading volume for the Shanghai and Shenzhen markets reached 1.7 trillion yuan, an increase of 128.9 billion yuan compared to the previous trading day [1]. Sector Analysis - The market saw a concentration of activity in the large infrastructure sector, with over 4,000 stocks rising and more than 100 stocks hitting the daily limit up [1]. - Key sectors that performed well included cement, building materials, steel, and ultra-high voltage, with companies like Conch Cement experiencing significant gains [1]. - Other active sectors included the ultra-high voltage and power grid concepts, with stocks like Guodian Nanzi also hitting the daily limit up [1]. - The robotics sector maintained strong momentum, exemplified by Changsheng Bearing's 20% limit up [1]. - Conversely, sectors such as cross-border payments, banking, AI, and photolithography faced declines [1].