证券时报·2025-05-21 10:49Market Overview - A-shares maintained a fluctuating upward trend, with the ChiNext Index rising over 1% at one point, and the North China 50 Index reaching a new high during the session [1] - The three major A-share indices collectively rose, with the Shanghai Composite Index up 0.21% to 3387.57 points, the Shenzhen Component Index up 0.44% to 10294.22 points, and the ChiNext Index up 0.83% to 2065.39 points [1] - The total trading volume in the Shanghai and Shenzhen markets was approximately 121.46 billion yuan, roughly equivalent to the trading volume on the previous day [1] Stock Movements - Several high-priced stocks exhibited volatility, with Chengfei Integration experiencing a significant drop after a strong performance, closing at a limit down [4][7] - Zhongyida's stock price surged over 312.90% from March 10 to May 20, but the company reported a loss for 2024, indicating a disconnection between stock price and fundamental performance [6] - Nanjing Port and Prince New Materials both displayed dramatic price movements, with Nanjing Port hitting a limit down before rebounding to a limit up [10][11] Sector Performance Gold Sector - The gold sector saw significant gains, with stocks like Laishen Tongling and Western Gold hitting the limit up, while several others rose over 5% [14] - Domestic and international gold prices continued to rise, with the main futures contract increasing over 3% and spot gold rising nearly 1% [16] Coal Sector - The coal sector showed strength, with Dayou Energy hitting the limit up and Shanmei International and Jinkong Coal rising approximately 6% [18] - Analysts noted a recovery trend in coal supply and demand, suggesting that coal prices may stabilize and rise in the upcoming peak season [20]