Memory-chip maker Micron Technology punched through a $1 trillion market capitalization for the first time on Tuesday, becoming the latest member of the trillion-dollar club and dragging the Nasdaq Composite to a fresh record close. The stock soared roughly 18% in a single session, capping a year-long melt-up that has now lifted Micron more than 700% over the past 12 months as AI-driven demand for high-bandwidth memory consumes every wafer the company can produce.
The S&P 500 added 0.7% and the Nasdaq climbed more than 1% to new all-time highs, with the Russell 2000 also setting a fresh peak. The Dow Jones Industrial Average, weighed by a handful of mega-cap names, reversed earlier gains to close about 80 points lower. The iShares Semiconductor ETF jumped 4.8%, pushing the chip benchmark's year-to-date advance beyond 80%.
UBS Triples Its Micron Price Target
The catalyst for Tuesday's blow-off move was a stunning revision from UBS, which tripled its 12-month price target on Micron from $535 to $1,625 per share. The bank cited long-term supply agreements with partially fixed pricing as evidence that the AI memory cycle has structurally shifted away from the boom-bust patterns that have historically defined the industry.
Micron has confirmed that its high-bandwidth memory, or HBM, capacity is fully sold out through 2026. HBM has become the bottleneck component in data-center expansion, and Micron is one of only a handful of manufacturers able to produce it at scale alongside SK Hynix and Samsung. With hyperscalers and AI chip designers competing for every available stack, pricing power has migrated decisively to the memory side of the value chain.
AI Capex Forecasts Keep Climbing
Goldman Sachs raised its 2026 US business investment forecast to 7.8%, with the firm projecting that AI-related capital spending could approach $800 billion this year. That outlook has become the central pillar of the bull case for semiconductors, and Tuesday's price action suggested institutional investors are still chasing exposure rather than locking in gains.
Among other notable movers, Alphabet rose 1%, Broadcom advanced 3%, and Tesla gained 1.8%. Nvidia, the largest AI chip beneficiary by market value, slipped 0.5% in a mild rotation, while Microsoft fell 0.8% and Amazon dropped 0.7%. The dispersion underscored how concentrated the day's gains were in pure-play memory and equipment names.
Iran Skirmishes Cap the Dow
The broader tape held its gains despite fresh military exchanges between US and Iranian forces over the weekend. President Trump and Secretary of State Rubio said they remain close to a framework deal that would restore energy trade through the Strait of Hormuz, a development that has helped pull oil prices lower and limit the inflation pass-through from the recent geopolitical shock.
That mixed backdrop — easing oil but persistent headline risk — explained the Dow's relative weakness even as risk appetite surged elsewhere. The Nasdaq-100 now sits within roughly 1% of the historic 30,000 level, a milestone that Wedbush's Dan Ives flagged earlier this month and that prediction markets currently price with about a 36% probability of being reached by year-end.
For now, the message from Tuesday's tape is unambiguous. Memory is the new oil, AI capex remains the dominant macro narrative, and the path of least resistance for the chip complex is still higher.
Sources: CNBC, TheStreet, Benzinga, TradingKey