000917，直线涨停！

Market Overview - A-shares experienced a strong rebound on October 20, with all three major indices rising, particularly the ChiNext Index which surged over 3% [1] - By the midday close, the Shanghai Composite Index was at 3866.09 points, up 0.69%; the Shenzhen Component rose 1.38%; and the ChiNext Index increased by 2.49% [1] Trading Volume and Stock Performance - The total trading volume exceeded 1.1 trillion yuan, slightly down from the previous trading day [2] - A total of 4237 stocks rose, with 75 hitting the daily limit up, while 1056 stocks declined [2] Sector Performance - Most sectors showed positive performance, with the optical module (CPO), lithium battery electrolyte, optical communication, and optical chip sectors leading the gains [2][3] - The precious metals sector was notably weak, with declines in rare earth and banking sectors [2] Notable Stocks - The optical module (CPO) sector saw a strong rebound, with related indices rising over 7% [3] - Key stocks in this sector included: - Zhongji Xuchuang rose 8.31% to 404.64 yuan per share, with a market cap of 449.6 billion yuan [4] - New Yisheng increased by 4.86% to 331.69 yuan per share, with a market cap of 329.7 billion yuan [5] - Tianfu Communication surged 8.94% to 159.7 yuan per share, with a market cap of 124.2 billion yuan [6] - Source Technology hit the daily limit up, rising 14.84% [8] Semiconductor Sector - The semiconductor chip sector also performed well, with companies like Silan Microelectronics hitting the daily limit up, reporting a market cap of 54.8 billion yuan [11] - Silan Microelectronics announced plans to invest 20 billion yuan in a new 12-inch high-end analog chip manufacturing line [11] Financial Sector - Agricultural Bank of China saw its stock price rise over 1%, marking a 12-day consecutive increase and reaching a market cap of over 2.61 trillion yuan [14] - Insurance stocks experienced broad gains, with China Life rising nearly 4% to 42.44 yuan per share, with a market cap of 1.0432 trillion yuan [17] Precious Metals Sector - The precious metals sector faced significant declines, with stocks like Hunan Silver hitting the daily limit down, and West Gold dropping over 8% [19][20] - International gold prices remained volatile, with spot gold at $4265.61 per ounce, up 0.35% for the day [20]