A股低开，创业板跌1%，银行股逆势走强，恒科指跌超2%，医药股继续活跃，国债上涨

Market Overview - The Shanghai Composite Index closed at 3353.07 points, down 0.31% [1] - The Shenzhen Component Index closed at 10051.62 points, down 0.75% [1] - The ChiNext Index closed at 1994.82 points, down 0.88% [1] - The CSI 300 Index closed at 3845.88 points, down 0.33% [1] - The STAR 50 Index closed at 976.73 points, down 0.97% [1] - The CSI 500 Index closed at 5680.67 points, down 0.69% [1] - The CSI 1000 Index closed at 6031.47 points, down 0.95% [1] Performance Metrics - The Shanghai Composite Index had a trading volume of 286.2 billion [2] - The Shenzhen Component Index had a trading volume of 468.57 billion [2] - The North Star 50 Index increased by 0.25% to 1419.41, with a year-to-date increase of 36.77% [2] - The CSI 500 Index had a trading volume of 84.3 billion [2] - The CSI 1000 Index had a year-to-date increase of 1.24% [2] - The CSI 2000 Index decreased by 1.62% to 2546.53, with a year-to-date increase of 8.45% [2]