The Nasdaq Composite closed at a fresh record high on Tuesday, rising 0.45% to 27,244.28 and marking its first record close since June. The move was powered by continued strength in AI-related stocks, while the S&P 500 slipped 0.01% to 7,764.27 and the Dow Jones Industrial Average fell 185 points, or 0.36%, to 51,863.89.
AI and semiconductor names led the advance. Micron Technology and SanDisk were among the strongest performers, with SanDisk shares climbing nearly 7% after a bullish call from Rosenblatt. Broader technology sentiment was mixed, however, as investors assessed the potential impact of Meta Platforms’ Muse AI assistant. Amazon blocked the AI agent from shopping on its platform on Monday, while shares of Uber Technologies, Lyft, Expedia and Charles Schwab fell as markets digested how increasingly capable AI agents could pressure consumer-facing businesses.
Oil prices extended their decline for a fifth consecutive session. Brent crude settled 1.09% lower at $99.25 a barrel, and US crude futures fell 1.24% to $94.59. Reports that Iran had offered to reopen the Strait of Hormuz within seven days and that Saudi Arabia was preparing to restart its East-West pipeline as early as this week added to expectations that supply disruptions could ease. The Strait of Hormuz remains a key energy-market focus because it handled about one-fifth of global oil and LNG supplies before the conflict began in late February.
Treasury yields stayed in focus, with the 10-year US Treasury note trading around 4.95%. The Federal Reserve raised its key interest rate by 25 basis points last week, and CME Group’s FedWatch Tool showed traders pricing a 53% chance of another 25-basis-point increase in October. Investors are also looking ahead to a planned US-China summit in Washington on Thursday, where trade, artificial intelligence, tariffs and rare earth metals are expected to be discussed.
Analysts note that a Nasdaq record high does not automatically signal overvaluation or an imminent top. The Nasdaq Composite is weighted by market capitalization, meaning mega-cap names such as Nvidia, Apple, Microsoft and Amazon have outsized influence. A rally driven by improving earnings and broad participation is generally viewed differently from one concentrated in a handful of expensive stocks. Market breadth therefore matters as much as the headline index level, and record highs describe where the market has been rather than predict where it goes next.
