个股大面积下跌，谨慎控制仓位

Market Overview - The Shanghai Composite Index closed at 3335.75 points, down 0.46%[2] - The Shenzhen Component Index closed at 10504.33 points, down 0.97%[2] - The ChiNext Index fell to 2103.7 points, down 1.15%[2] - Over 4000 stocks declined across the market, indicating a bearish sentiment[4] Trading Volume and Financing - The total trading volume for the day was 1.22 trillion yuan, an increase of 102.6 billion yuan from the previous trading day[4] - As of March 28, the financing balance on the Shanghai Stock Exchange was 967.13 billion yuan, a decrease of 12.04 billion yuan[9] - The total financing balance for both exchanges was 1.9058 trillion yuan, down 38.36 billion yuan from the previous day[9] Sector Performance - Precious metals, computing power, and new energy sectors showed gains, while photovoltaic, tourism, and aquaculture sectors experienced declines[6][10] - The market is advised to maintain a cautious stance with light positions due to low trading volumes and potential further declines[10] Future Events - The 50th Optical Fiber Communication Conference and Exhibition is scheduled for April 1, 2025, relevant to the communication equipment sector[18] - The 13th China Electronic Information Expo will take place on April 9, 2025, impacting the consumer electronics sector[18]