Chinanews client, August 17 (Xie Yiguan) On the 17th, the three major A-share stock indexes oscillated higher. As of the close, the Shanghai Composite Index rose 2.34% to 3,438.80 points and the highest intraday high of 3,450.9 points, which was only one step away from the year's high; the Shenzhen Component Index rose 1.88% to 13742.23 points; the ChiNext Index rose 1.04% to 2696.39 points. Over 3,400 stocks in the Shanghai and Shenzhen stock markets rose, with a trading volume exceeding one trillion yuan throughout the day. On the disk, major financial sectors such as insurance, securities, diversified finance, and banking led the way. The hotel and catering sector bucked the market and closed down; in terms of concept sectors, sports concepts, gold concepts, and gaming concepts performed well.