[A-share closing review: Shanghai Composite Index fell 1.05%, information security concept, semiconductor sector and other sectors led the gains] Jinshi Data reported on October 17 that today the three major indexes opened high and then fluctuated downward. As of the close, the Shanghai Composite Index fell 1.05%, the Shenzhen Component Index fell 0.74%, and the ChiNext Index fell 0.32%. On the market, the concept of copper cable high-speed connection was active, and Kaiwang Technology hit the daily limit; Sora concept strengthened, Zhongguang Tianze and Huayang Lianzhong hit the daily limit; in addition, information security concept, Huawei computing power concept, semiconductor, aviation and other sectors led the gains; real estate, construction and building materials, gas and heating supply and other sectors led the declines. The total transaction volume of the two cities was about 1.5 trillion yuan. (Reprinted from: Jinshi Data)