A股三大指数收跌，全市场近4800只个股下跌

Market Overview - The A-share market experienced a significant decline on October 17, with all three major indices dropping over 2% during the trading day [1] - The Shanghai Composite Index fell by 1.95%, the Shenzhen Component Index decreased by 3.04%, and the ChiNext Index dropped by 3.36% [1] - The total trading volume in the Shanghai and Shenzhen markets was approximately 1,938.116 billion yuan, an increase of about 6.979 billion yuan compared to the previous trading day [1] - Out of 4,485 stocks, 602 rose while 4,783 fell, with 44 hitting the daily limit up and 28 hitting the daily limit down [1] Sector Performance - The market showed a broad decline across various sectors, with significant drops in power equipment, grid equipment, photovoltaic equipment, wind power equipment, semiconductors, electronic components, consumer electronics, batteries, and electronic chemicals [2] - Conversely, the precious metals, gas, and airport sectors saw gains despite the overall market downturn [2] - Notably, the gas sector performed well, with Guo Xin Energy achieving three consecutive limit-up days [2] - The banking sector showed strong performance, with Agricultural Bank reaching a new high [2] - The port and shipping sector exhibited localized strength, with Hai Tong Development achieving two consecutive limit-up days [2] - On the downside, several heavyweight stocks weakened, including ZTE Corporation hitting the limit down and Sunshine Power dropping by 11% during the day [2] - The grid and energy storage sectors faced collective declines, with Huaming Equipment and Igor hitting the limit down [2]