创业板指涨逾3%，全市场上涨个股近4500只

Core Points - The ChiNext Index rose over 3% on the morning of October 20, indicating strong performance in the growth sector [1] - The Shanghai Composite Index increased by 0.61%, while the Shenzhen Component Index saw a rise of 1.73%, reflecting overall positive market sentiment [1] - Nearly 4,500 stocks in the Shanghai, Shenzhen, and Beijing markets experienced gains, showcasing broad market participation [1]