Market Overview - The A-share market closed with the Shanghai Composite Index up 0.53%, Shenzhen Component Index up 0.88%, and ChiNext Index up 0.77%. The total market turnover was 1,897.2 billion yuan, a decrease of 24.1 billion yuan from the previous day. Over 4,100 stocks in the market rose [2]. Silver Fund Surge - The domestic silver fund, Guotou Silver LOF, experienced a continuous three-day limit-up with a premium of 68.16%. The price of silver has surged by 150.07% year-to-date, leading to significant interest in this fund [5][6]. - The fund's management has issued 12 premium risk warning announcements since December, attempting to cool down the market due to the high premium [6][8]. - Investors are engaging in arbitrage operations, but the LOF's arbitrage mechanism faces multiple restrictions, including strict subscription limits and T+2 transfer processes, which may pose risks [7]. Commercial Aerospace Sector - The commercial aerospace sector saw a significant surge, with multiple stocks hitting the daily limit. Key events include the upcoming 2025 Commercial Aerospace Development Conference and the successful maiden flight of the Long March 12 rocket [10][12][13]. Semiconductor Tariff Delay - The semiconductor sector rose by 1.95%, with several stocks increasing over 10%. The U.S. government announced a delay in the planned tariff increase on Chinese semiconductor products until June 2027, maintaining the current tax rate at 0% [14][18].