A股，再创新纪录！

Core Viewpoint - The A-share market's margin trading balance has reached a historic high, surpassing 2.4 trillion yuan, indicating a significant increase in trading activity and investor engagement [2][6][4]. Group 1: Margin Trading Balance Growth - As of September 17, 2025, the total margin trading balance in the A-share market reached 24,054 billion yuan, marking a daily increase of approximately 12.8 billion yuan and achieving nine consecutive days of growth [6][2]. - Since August 2025, the margin trading balance has rapidly increased, breaking through several key thresholds: 20 trillion yuan on August 5, 21 trillion yuan on August 18, 22 trillion yuan on August 26, 23 trillion yuan on September 8, and finally 24 trillion yuan on September 17 [7][2]. - The cumulative increase in margin trading balance this year has exceeded 500 billion yuan, with August contributing approximately 276.5 billion yuan and September adding around 144.1 billion yuan [7][2]. Group 2: Stability of Margin Trading Proportions - Despite the continuous growth in margin trading balance, its proportion relative to the A-share market's circulating market value remains relatively stable, standing at 2.51% as of September 17, 2025 [9][3]. - This proportion has seen a slight increase compared to recent averages but is still significantly lower than the historical peak of over 4% observed between May and July 2015 [9]. - The proportion of margin trading volume to total A-share trading volume has also remained stable, recorded at 11.83% on September 17, 2025, which is comparable to recent averages and well below the peak of over 20% in 2015 [10].