Micron Technology (MU) Hits $1 Trillion Market Cap in Record 48 Trading Sessions

Micron Technology Inc. (MU) shares surged 19% on May 26, 2026, vaulting its market capitalization above $1 trillion for the first time. The memory-chip maker joined the trillion-dollar club just 48 trading sessions after first crossing $500 billion, the fastest such leap ever recorded by a U.S. company, according to Dow Jones Market Data. The milestone eclipsed Nvidia Corp. (NVDA), which took 490 sessions to cover the same ground. The Boise, Idaho-based company became the 12th U.S. firm to reach the threshold and the first headquartered in the state. The stock has climbed about 80% over the past month as Micron ramps output to meet what it calls the severest memory-supply shortage in more than four decades. Angeles Investments’ Michael Rosen said Micron had transformed from a commodity play into “the industry standard,” while Potomac’s Dan Russo called the rally “unprecedented from every angle.”