U.S. Stock Market Night Trading MovementsAlibaba fell 3.30% in night trading. Based on recent key news:<ol><li>On March 2, Alibaba recorded a large non-automated trading transaction, with the stock price down 4% compared to the previous closing price, leading to a 4.5% drop in stock price. The transaction amount reached 16.414 billion yuan, with a net active sell of 1.634 billion yuan. Source: Economic Information Daily</li><li>On March 3, the U.S. attack on Iran led to a weak opening for U.S. stocks, with Chinese concept stocks generally declining, and Alibaba falling 1.08% in the U.S. market. This event increased market uncertainty, affecting Alibaba's stock price. Source: Economic Information Daily</li><li>On March 4, Lin Junyang, the head of Alibaba's Qianwen large model technology, announced his resignation, raising market uncertainty regarding the company's AI strategy, which may affect investor confidence. Source: Yicai, Chinese concept stocks generally softened, increasing market uncertainty.</li></ol>Stocks with High Trading Volume in the IndustryAmazon fell 1.22% in night trading. Based on recent key news:<ol><li>On March 3, Amazon's cloud computing division suffered a drone attack in the Middle East, causing damage to facilities and service interruptions. This event heightened geopolitical tensions, affecting Amazon's operational capabilities and leading to a drop in stock price. Source: Bloomberg</li><li>On March 3, Amazon closed its Abu Dhabi distribution center and suspended delivery services due to escalating instability in the Middle East. This move reduced logistics network capacity, impacting Amazon's business operations. Source: Internal memorandum</li><li>On March 2, Citigroup reported that Amazon expanded its cooperation with OpenAI. Although this move is seen as a long-term positive, the high short-term investment pressures financial metrics, affecting stock performance. Source: Citigroup report, geopolitical risks increase, impacting global supply chains.</li></ol>JD.com fell 3.86% in night trading. Based on recent key news:<ol><li>On March 2, JD.com launched a virtual idol girl group &#34;Twelve Sisters&#34; and released its first AI single, attracting market attention. This move showcases JD.com's innovation capabilities in the AI field, which may positively impact its brand image and market influence.</li><li>On March 3, JD.com is set to announce its fourth-quarter results this Thursday, with the market expecting a significant decline in net profit. Investors are concerned about losses in the delivery business and new business strategies, putting pressure on the stock price.</li><li>On March 3, JD.com announced that its delivery business will fully expand into in-store pickup and group buying, targeting a market share of over 30%. This move demonstrates its expansion strategy in the food and beverage sector, which may affect short-term stock price fluctuations. Increased AI investment in the internet industry raises concerns about risks.</li></ol>Pinduoduo fell 1.42% in night trading. Based on recent key news:<ol><li>On March 3, a report from Guosen Securities indicated that internet giants will increase AI investment, which may lead to restructuring risks for digital products. This news raised market concerns about Pinduoduo and other internet companies, leading to a drop in stock price.</li><li>On March 3, the risk of worsening competition in the short video industry was mentioned, which may affect Pinduoduo's advertising revenue expectations, further intensifying stock price pressureOn March 3rd, the risk of slower-than-expected growth in the advertising market due to macroeconomic downturns has increased, affecting market confidence in Pinduoduo. The internet industry faces restructuring risks that need to be monitored</li></ol>

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Alibaba fell 3.30% in the after-hours market; Amazon fell 1.22% in the after-hours market, with a transaction volume of USD 14.27 million; JD.com fell 3.86% in the after-hours market, with a transaction volume of USD 5.04 million; Pinduoduo fell 1.42% in the after-hours market, with a transaction volume of USD 3.61 million

- Alibaba's stock dropped 3.30% in after-hours trading due to significant news such as a large non-automated trading transaction and uncertainties surrounding its AI strategy after the departure of a key executive.  
- Similarly, Amazon's stock fell by 1.22% following drone attacks in the Middle East that disrupted operations and led to the closure of its Abu Dhabi delivery center.  
- JD.com also saw a decline of 3.86% amid reports of expected profit drops and expansion in its food delivery services, raising concerns over its market strategy.

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U.S. stock night market volatility: Alibaba fell 3.30% in after-hours trading, large transactions and executive departures triggered market unease