【新华500】新华500指数（989001）28日涨1.89%

Group 1 - The Xinhua 500 Index (989001) closed at 4921.61 points on August 28, with an increase of 1.89% [1] - The index experienced a "V" shaped reversal during the afternoon session after a slight decline in the morning [3] - The index reached a high of 4922.37 points and a low of 4806.27 points during the trading day, with a total trading volume of 10,354 billion yuan, showing a slight decrease compared to the previous trading day [4] Group 2 - Notable gainers among constituent stocks included Qi Anxin, which rose by 18.00%, and SMIC, which increased by 17.45% [4] - Several stocks, including Lingyi iTech and China Rare Earth, reached approximately 10% limit up, while others like Xingyu and Shaanxi Coal experienced significant declines [4] - The Xinhua 500 Index measures the price levels of major large and medium-cap stocks in the A-share market [4]