[Changxin Technology Surges 471.59% on First Trading Day, Becoming the Largest Market Cap Stock in China's A-Share Market] BlockBeats News, on July 27, China's A-share market opened with the Shanghai Composite Index down 0.14%, the Shenzhen Component Index down 0.04%, and the ChiNext Index up 0.03%. On its first trading day, Changxin Technology surged 471.59%, closing at 49.5 yuan per share, making Changxin Technology the largest market cap stock in the A-share market.