沪指，近10年新高！

Market Performance - On August 18, A-shares saw a significant rise, with the Shanghai Composite Index reaching a new high since August 20, 2015, surpassing the previous peak of 3731.69 points set in February 2021 [1][3] - The performance of major indices on that day included a 0.95% increase in the Shanghai Composite Index, a 1.87% rise in the Shenzhen Component Index, and a 3.80% gain in the North Exchange 50 Index [1] Margin Trading - The margin trading scale has seen substantial growth, with the total margin balance exceeding 2 trillion yuan for the first time in ten years on August 5, and again surpassing this threshold on August 11 [4] - As of August 15, 2025, the margin balance reached 206.26 billion yuan, marking a new high in the last decade, with trading volume on that day hitting 24.79 billion yuan, the highest since 2025 [4]