2025年超长期特别国债今起发行；上金所调整部分合约保证金水平和涨跌停板……盘前重要消息一览

Group 1 - The issuance of 2025 ultra-long special government bonds has commenced, with 500 billion yuan for 20-year bonds and 710 billion yuan for 30-year bonds, set to be listed for trading on April 29 [4] - The central financial institutions are initiating the issuance of special government bonds amounting to 165 billion yuan with a 5-year term, starting interest payments on April 25 and also set to be listed on April 29 [4] Group 2 - The Shanghai Gold Exchange has announced adjustments to margin levels and price limits for several contracts, increasing the margin for Au contracts from 12% to 13% and for Ag contracts from 15% to 16% [6] - The Shanghai Municipal Bureau of Statistics reported a GDP growth of 5.1% year-on-year for the first quarter, with significant contributions from the information transmission, software, and financial sectors [8] Group 3 - The first Shanghai International Auto Show has opened, showcasing new energy and intelligent connected vehicles, with several brands participating for the first time [7] - CATL has introduced a new model for battery swapping, with several vehicles set to launch in the fourth quarter of 2025 [7] Group 4 - The European Union's antitrust regulators have fined Apple 500 million euros and Meta Platforms 200 million euros under the Digital Markets Act [8] - The U.S. stock market saw significant gains, with the Dow Jones up 1.07%, Nasdaq up 2.50%, and S&P 500 up 1.67%, indicating strong performance from Chinese concept stocks [8]