--- title: "U.S. stock night trading fluctuations: Dell Tech rose 4.35% in night trading, driven by Supermicro's performance and AI collaboration" type: "News" locale: "en" url: "https://longbridge.com/en/news/293400553.md" description: "Dell Tech-C rose 4.35% in the night session; SanDisk rose 2.30% in the night session, with a transaction volume of USD 103 million; Western Digital rose 0.95% in the night session, with a transaction volume of USD 7.69 million; AMD rose 18.94% in the night session, with a transaction volume of USD 6.19 million" datetime: "2026-07-22T00:51:33.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/293400553.md) - [en](https://longbridge.com/en/news/293400553.md) - [zh-HK](https://longbridge.com/zh-HK/news/293400553.md) --- # U.S. stock night trading fluctuations: Dell Tech rose 4.35% in night trading, driven by Supermicro's performance and AI collaboration **U.S. Stock Night Market Movements** Dell Technologies-C rose 4.35% in the night market. Based on recent key news: 1. On July 21, AMD announced its quarterly results, benefiting from new orders exceeding $60 billion, with gross margins significantly better than expected, driving Dell Technologies' stock price up about 5%. AMD's performance has inspired optimistic sentiment in the market towards Dell. 2. On July 20, SCALE AI signed a memorandum of understanding with Dell Technologies to support Qatar's digital future and artificial intelligence capabilities. This collaboration will strengthen Dell's influence in the Middle Eastern market, pushing the stock price up. 3. On July 19, the demand for DRAM orders from Changxin Storage was strong, prompting PC manufacturers like Dell to lock in production capacity in advance to ensure future production plans. The AI wave has boosted memory demand, leading to an increase in Dell's stock price. AI demand is driving tech stocks up, and the market is optimistic. **Stocks with High Trading Volume in the Industry** SanDisk rose 2.30% in the night market. Based on recent key news: 1. On July 21, Morgan Stanley predicted that memory chip prices would rise by 25%, driven by AI data center demand, with SanDisk's stock price rising over 6% during the session. The storage chip sector collectively rose, with significant capital inflow, and trading volume exceeding $30 billion. Source: Zhitong Finance 2. On July 21, UBS reported that the sell-off of momentum stocks is nearing its end, recommending a gradual rebuilding of positions in AI and semiconductor stocks. The tech sector has bottomed out, benefiting stocks like SanDisk from capital inflow. Source: Wall Street Insights 3. On July 22, the growth in demand for storage chips drove related stocks up, with SanDisk's stock price continuing to rise. The expansion of AI infrastructure has boosted demand for high-bandwidth memory, supporting industry profits. Source: Jinshi Data Western Digital rose 0.95% in the night market. Based on recent news: 1. On July 20, Western Digital announced that it would support the growth of global AI workloads, particularly in its business expansion in Malaysia. This news boosted market confidence, driving the stock price up. 2. On July 21, market research firms IDC and Counterpoint Research predicted that the expansion of AI infrastructure would increase demand for high-bandwidth memory and DRAM, with Western Digital being one of the beneficiaries, leading to a rise in its stock price. 3. On July 22, the Roundhill Memory ETF rose 11.7%, driving the stock prices of several memory chip manufacturers, including Western Digital, up by 12% to 13%. The expansion of AI infrastructure has boosted memory demand. AMD rose 18.94% in the night market. Based on recent key news: 1. On July 21, AMD announced that new orders in the fourth fiscal quarter exceeded $60 billion, setting a historical record. This news drove the stock price up over 20% in after-hours trading. The company expects gross margins to reach 15%-17%, far exceeding the previous expectation of 8.2%-8.4%. Source: Zhitong Finance 2. On July 21, AMD released preliminary quarterly results, benefiting from new orders exceeding $60 billion, with gross margins significantly better than previously expected. This news drove the stock price up nearly 17% in after-hours trading. Source: Wall Street Watch 3. On July 21, AMD expects fourth-quarter revenue to be close to the lower end of the guidance range, and the market reacted calmly, but investors are more focused on the recovery of profit margins and strong forward-looking demand indicators. 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