暴跌80%！4倍牛股放量闪崩

Market Overview - A-shares experienced narrow fluctuations with major indices showing little movement on June 5 [2] - The Hong Kong market continued to rise, with the Hang Seng Index reaching an intraday gain of over 1% [7] Stock Performance - The Shanghai Composite Index closed at 3378.82, up by 2.62 points or 0.08% [3] - The Shenzhen Component Index and the ChiNext Index also saw slight increases of 16.17 points (0.16%) and 6.46 points (0.32%) respectively [3] - The newly listed stock Youyou Green Energy (301590) saw an intraday increase of up to 99.64% [4] - Another new stock, Zhongce Rubber (603049), initially rose over 20% but later narrowed to less than 10% [6] Sector Performance - In the A-share market, sectors such as telecommunications, media, and electronics showed the highest gains, while beauty care, comprehensive, and agriculture sectors faced the largest declines [3] - Concept sectors leading the gains included pest control, virtual power plants, sports, and gambling, while weight loss drugs, aquatic products, and CXO sectors lagged [4] Notable Stock Movements - Chinese company Zhonghua Silver Technology experienced a dramatic drop of over 80% after a rapid increase of over 4 times in less than a month [7][9] - The company specializes in printed circuit board (PCB) manufacturing and LED lighting products, being one of the top PCB manufacturers in Hong Kong and mainland China [9]