U.S. Stock Market Close: Nasdaq Surges 12% in a Single Day, Six of the "Magnificent Seven" Post Double-Digit Gains

On Wednesday, April 9, the US stock market surged significantly during the session, with all three major indices closing sharply higher. The Nasdaq Composite Index rose over 12%, marking the second-largest single-day gain in history. At the close, the Dow Jones Industrial Average increased by 7.87% to 40,608.45 points, its largest gain since March 25, 2020, with all 30 components rising. The S&P 500 Index climbed 9.52% to 5,456.90 points, its largest gain since October 29, 2008, and the third-largest single-day increase since World War II, with 494 stocks advancing and 9 declining. The Nasdaq Composite Index jumped 12.16% to 17,124.97 points, its second-largest single-day gain in history, second only to the 14.17% increase on January 3, 2001, with the ratio of advancing to declining stocks nearly 6:1. Additional data showed that the trading volume on Wednesday was approximately 30 billion shares, the highest in nearly 18 years since Wall Street began tracking this data. During the session, US President Trump announced that he had authorized a 90-day tariff suspension for countries not taking retaliatory actions. Earlier in the session, Trump also posted urging investors that it was a "good time to buy." Adam Crisafulli, founder of Vital Knowledge, commented, "The 90-day suspension triggered a strong rebound, and the delay in implementation undoubtedly alleviated significant market pressure. However, the tariffs have not completely disappeared." Bill Gross, known as the "Bond King," wrote on social media, "My defensive stock portfolio is green (up) today, so I have no complaints about the market." However, he also noted, "Are you really willing to hold those highly volatile US stocks? Their price movements depend on whether the US President slept well last night and whether he might suddenly reverse policies the next day." In terms of popular stocks, most of the "Magnificent Seven" saw double-digit gains. Apple rose 15.33%, reclaiming its position as the world's most valuable company; Microsoft increased by 10.13%, Nvidia by 18.72%, Amazon by 11.98%, Google C by 9.88%, Meta by 14.76%, and Tesla by 22.69%. The Philadelphia Semiconductor Index surged 18.73%, with all 30 components rising over 12%. Microchip Technology rose 27.05%, Arm Holdings by 24.2%, AMD by 23.82%, Intel by 18.75%, Broadcom by 18.66%, and TSMC by 12.29%, the smallest gain. Among Chinese stocks, the Nasdaq Golden Dragon China Index increased by 4.53%. Most popular Chinese stocks closed higher, with Amer Sports up 15.02%, Kingsoft Cloud by 13.21%, and iQIYI by 12.75%. Li Auto rose 6.82%, JD.com by 6.22%, XPeng Motors by 6.21%, Tencent Music by 5.51%, Alibaba by 5.44%, NIO by 5.41%, Baidu by 4.85%, New Oriental by 4.15%, Pinduoduo by 0.18%, and TAL Education fell 1.33%. In company news, Amazon launched its next-generation generative AI voice model, Nova Sonic, marking a significant breakthrough in the field of artificial intelligence voice. Amazon emphasized that the model has a significant cost advantage, being approximately 80% cheaper than OpenAI's GPT-4o, making it the most cost-effective AI voice solution currently on the market.