Micron Technology (NASDAQ: MU) vaulted past a $1 trillion market capitalisation for the first time on Tuesday, May 26, after shares surged approximately 18 to 19 percent in a single session following a transformational analyst upgrade that reset how Wall Street is valuing the memory chip sector.
The catalyst was a UBS upgrade that raised the firm’s price target from $535 to $1,625, the highest target among the 46 brokerages covering the stock, with UBS framing the move around structural changes in the memory market driven by artificial intelligence demand.
UBS wrote: “We believe the market will start to put a more ‘normal’ multiple on the stock and MU will continue to re-rate higher as more details emerge about the structural changes AI has driven to the entire memory complex.”
The firm specifically pointed to long-term agreement opportunities with partially fixed pricing as the mechanism that justifies a higher and more stable earnings multiple than the cyclical semiconductor framework markets have historically applied.
Micron (NASDAQ: MU) shares pushed above $886 in the session, a price that on approximately 1.13 billion shares outstanding was enough to clear the trillion-dollar threshold cleanly for the first time in the company’s history.
The move places Micron alongside Nvidia, TSMC, and Samsung as the chipmakers that have crossed the trillion-dollar line, a group whose membership now encompasses the full AI hardware stack from processing to memory to manufacturing.
The investment thesis behind the upgrade is straightforward at its core. Every GPU running AI workloads requires memory, and high-bandwidth memory, or HBM, has emerged as the most acute bottleneck in data centre expansion as hyperscalers race to scale their compute capacity.
Micron is one of a small number of companies globally capable of manufacturing HBM at meaningful scale, giving it structural pricing power that has allowed it and peers SK Hynix and Samsung to raise prices consistently across the AI buildout cycle.
The stock has more than tripled year to date ahead of Tuesday’s additional surge, meaning investors who had already recognised the HBM opportunity have seen extraordinary returns even before this particular upgrade arrived to catalyse a broader rerating.
Intel, referenced as a comparable in some market commentary, has also recovered sharply after missing the early AI rally, gaining more than sixfold from its lows as a government investment programme accelerated its manufacturing restart.
The market’s session was notably split. The S&P 500 and Nasdaq closed at fresh all-time highs, with the S&P gaining 0.61 percent to 7,519.12 and the Nasdaq gaining 1.19 percent to 26,656.18, both driven by technology, while the Dow Jones Industrial Average fell 118 points, with oil stocks weighing as crude dropped on Iran negotiation progress.