Shares of Micron Technology surged on Tuesday, pushing the chipmaker’s market valuation above $1 trillion for the first time as investor enthusiasm surrounding artificial intelligence infrastructure continued to fuel gains across the semiconductor sector.
Micron’s stock jumped roughly 19% during the session, extending one of the strongest rallies in the technology market over the past year. The company’s shares have climbed more than 700% over the last 12 months amid soaring demand for high-bandwidth memory and advanced chips used in AI systems, cloud computing, and data center expansion.
The latest surge followed a major bullish revision from UBS, whose analysts tripled their price target on Micron shares to $1,625 from $535, citing accelerating demand tied to AI infrastructure deployment.
The rally places Micron among a growing group of technology giants benefiting from the global race to scale artificial intelligence capabilities. Demand for memory chips has risen sharply as companies expand AI model training, data processing capacity, and next-generation computing infrastructure.
The broader semiconductor sector has become one of Wall Street’s strongest-performing industries in 2026, driven by expectations that AI spending will continue expanding across cloud providers, enterprise software firms, and hyperscale data center operators.
Micron’s milestone also reflects the increasingly central role memory chip manufacturers are playing within the AI supply chain, an area previously dominated by graphics processor companies and large cloud computing providers.
The company joins a select group of firms that have crossed the trillion-dollar valuation threshold as investors continue rotating capital toward businesses viewed as foundational to the next phase of AI development and infrastructure expansion.






