Xin Hua Cai Jing·2025-08-18 07:29Group 1 - The Xinhua 500 Index (989001) closed at 4668.98 points on August 18, with an increase of 0.95% [1][4] - The index opened higher in the morning, experienced a slight pullback for gap filling, and then rose significantly before narrowing its gains in the afternoon [3] - The index reached a high of 4704.83 points and a low of 4625.92 points during the trading day, with a total trading volume of 893.2 billion yuan, which was an increase compared to the previous trading day [3] Group 2 - Notable gainers among constituent stocks included Mango Super Media, which rose by 16.98%, Junshi Biosciences by 12.05%, and Tonghuashun by 10.27%, with several stocks reaching approximately 10% limit up [3] - Conversely, stocks such as Bank of China Securities, Siyuan Electric, and CITIC Special Steel experienced significant declines [3]