历史上第三次突破4000点！沪指再创十年新高

Core Points - The A-share market experienced a significant rise on October 28, with the Shanghai Composite Index breaking the 4000-point mark for the first time since August 18, 2015, closing at 4005.44 points, up 0.21% [1] - The Shenzhen Component Index and the ChiNext Index also saw increases, closing at 13559.57 points (up 0.52%) and 3277.97 points (up 1.35%) respectively [1] - The trading volume in the Shanghai and Shenzhen markets reached 1.35 trillion yuan, a decrease of 215.6 billion yuan compared to the previous trading day [3] Market Trends - Market hotspots rapidly rotated, with early trading focusing on sectors such as Fujian, nuclear power, and commercial aerospace, with the Fujian sector showing the strongest performance [5] - Notable stocks included Pingtan Development, which achieved a significant rise for eight consecutive days, and Fujian Cement and Haixia Innovation, both of which recorded two consecutive gains [5] - The nuclear power sector was active, with Dongfang Tantalum and Antai Technology showing notable gains [5] - The commercial aerospace sector continued its strong performance, with Aerospace Intelligence Equipment reaching a historical high [5] - Conversely, the coal sector weakened, with Dayou Energy hitting the daily limit down [5] Valuation Insights - The Shanghai Composite Index's third breakthrough of the 4000-point mark occurred on October 28, with the overall market valuation at approximately 17 times price-to-earnings (PE) ratio [5] - Historical context shows that during the first breakthrough on May 9, 2007, the market PE was over 40 times, and during the second breakthrough on April 8, 2015, it had decreased to around 20 times [5]