[Review: The ChiNext Index fell 1.62% after rising higher, and heavyweight CATL fell more than 12%] On October 21, the market collectively rose and fell, with the ChiNext Index falling 1.62%, after rising nearly 1% before. The heavyweight CATL fell by more than 12%, and its stock price fell by more than 50% from the historical high reached on May 7, 2026. GEM ETF E Fund (159915) saw significant volume in late trading, with transactions exceeding 10 billion yuan. The turnover of Shanghai and Shenzhen stock markets was 1.43 trillion, a decrease of 26.8 billion from the previous trading day. More than 3,300 stocks across the market fell. On the market, data elements bucked the trend and strengthened. Nanwei Software and Starlight shares had three boards in four days, and Mass Data, Tianwei Video, and Sanwei Tiandi hit their daily limit; the concept of AI comic dramas repeatedly strengthened, with Guangdong Media having two consecutive boards and Cultural Investment Holdings hitting its daily limit; Fujian Anji Food had two consecutive boards and Fujian Cement hit its daily limit. On the downside, the battery industry chain weakened, Shanghai Xiba, Times Wanheng fell to the limit, Zizhu Hi-Tech, Azure Lithium Core, etc. fell one after another. As of the close, the Shanghai Stock Exchange Index fell 0.6%, the Shenzhen Component Index fell 0.82%, and the ChiNext Index fell 1.62%.