Key TakeawaysThe Nasdaq Composite advanced 0.4% Tuesday while the Dow Jones dropped 0.4% and the S&P 500 remained relatively unchangedMeta’s stock continued its momentum following Monday’s 11% surge, driven by strong reception of its Muse AI applicationCrude oil prices declined amid speculation that Iran could reopen the Strait of Hormuz shipping lane within a weekTreasury Secretary Scott Bessent characterized preliminary US-China trade discussions as “very successful”The information technology sector approached its first record closing level since JuneUS stocks delivered mixed results Tuesday as declining energy prices and sustained optimism around artificial intelligence applications propelled technology shares higher.The tech-focused Nasdaq Composite climbed approximately 0.4% to reach 27,216, extending Monday’s record-setting performance. The S&P 500 traded essentially flat at 7,767, remaining within 1% of its all-time closing peak of 7,798 achieved on August 13. Meanwhile, the Dow Jones Industrial Average declined roughly 0.4%, shedding about 195 points during the session.NASDAQ Composite (^IXIC)Artificial Intelligence Momentum Propels Technology SectorMeta’s performance played a pivotal role in Tuesday’s market action. Following Monday’s impressive 11% jump triggered by its Muse AI application claiming the number one position in Apple’s App Store, the social media giant’s shares extended their upward trajectory. This strength rippled through the Magnificent Seven technology stocks, supporting the broader sector.The continued enthusiasm surrounding Meta’s AI success generated optimism regarding semiconductor demand. Technology stocks positioned themselves to achieve their first record closing level since early summer.Markets had already received encouragement at the week’s outset when US and Chinese representatives concluded initial trade negotiations ahead of a scheduled meeting between President Trump and Chinese President Xi Jinping. Treasury Secretary Scott Bessent’s characterization of these preliminary talks as “very successful” sparked optimism for potential collaboration on artificial intelligence development between the world’s two largest economies.Energy Prices Retreat on Middle East DevelopmentsCrude oil markets experienced downward pressure Tuesday following reports suggesting Iran might reopen the strategically crucial Strait of Hormuz within seven days, contingent on the United States reducing its military presence in the area.Breaking: Oil crashes below $91 after reports say Iran offered to reopen the Strait of Hormuz within seven days if the US eases its military blockade. pic.twitter.com/cPI2ufcRZh— Bull Theory (@BullTheoryio) September 22, 2026Brent crude futures decreased approximately 1% while West Texas Intermediate fell nearly 2%. Declining energy costs typically alleviate inflationary pressures, creating a more favorable environment for equity investments.Market participants closely monitored developments at the United Nations assembly for potential diplomatic breakthroughs that could influence trading conditions.AutoZone shares climbed after the automotive parts chain delivered quarterly earnings that exceeded profit forecasts, despite falling short on revenue targets. KB Home also released its financial results Tuesday during an otherwise quiet period for corporate earnings announcements and economic indicators.The 10-year Treasury yield edged modestly higher as the session progressed, moderating some earlier equity gains.The S&P 500 remained tantalizingly close to establishing a new all-time high, with market observers evaluating whether diplomatic progress or corporate results might provide the catalyst needed to surpass the current record.The post Tech Stocks Rally as AI Momentum and Oil Price Drop Boost Nasdaq appeared first on Blockonomi.