A股，成交额创年内新高！沪指创近10年新高！

Market Performance - On August 18, the market experienced a high and then a pullback, with the Shanghai Composite Index reaching a nearly 10-year high and the North Stock 50 hitting a historical peak [1] - The Shenzhen Component Index and the ChiNext Index both surpassed their high points from October 8 of the previous year [1] - The total trading volume in the Shanghai and Shenzhen markets was 2.76 trillion yuan, an increase of 519.6 billion yuan compared to the previous trading day, marking a new high for the year [1] Sector Highlights - Market hotspots were concentrated in AI hardware and large financial sectors, with over 4,000 stocks rising [1] - Financial stocks, including brokerage and fintech, surged, with companies like Zhihui and Tonghuashun reaching historical highs [1] - AI hardware stocks, particularly liquid-cooled servers, saw significant gains, with over 20 stocks hitting the daily limit [1] - Rare earth permanent magnet stocks were also active, with companies like Northern Rare Earth hitting the daily limit [1] Index Performance - By the end of the trading day, the Shanghai Composite Index rose by 0.85%, the Shenzhen Component Index increased by 1.73%, and the ChiNext Index climbed by 2.84% [1]