Micron briefly joins $1 trillion market club

Micron Technology briefly reached a market value of $1 trillion for the first time on May 26, 2026, amid a sharp rally in its shares. Reuters reported that the stock climbed as much as 19.3% during the session and was last up 17.4% at $881.60, propelling the memory-chip maker into the ranks of the world’s largest publicly traded companies by market capitalization.

Media coverage described the move as another major surge for Micron and highlighted its role in sending U.S. stock indexes to record levels. The Associated Press reported that Micron’s advance helped drive a broader rally in U.S. equities as Wall Street’s latest $1 trillion company joined other large technology names powering recent gains.

The rally followed a bullish research call from UBS, which raised its price target on Micron shares to $1,625 from $535. Multiple outlets cited the UBS upgrade as the immediate catalyst for the sharp intraday jump on May 26, 2026, as investors responded to the higher target and outlook on Micron’s earnings power tied to demand for its memory products.

The new price target signaled a significantly more optimistic view from UBS on Micron’s potential valuation. Coverage linked the move to expectations that Micron will benefit from rising memory needs in artificial-intelligence infrastructure, as large data centers and AI workloads require high-performance memory chips.

Reporting on May 26, 2026 emphasized structural demand for high-bandwidth memory used in AI systems as a key factor behind investor enthusiasm. Micron told investors that its entire 2026 supply of high-bandwidth memory, or HBM, was already sold out, underscoring tight supply conditions in this part of the market.

Micron also said that its next-generation HBM4 products were in production, pointing to an expanding product lineup aimed at advanced AI and data-center applications. The sold-out status of 2026 HBM output and progress on HBM4 were cited as central themes supporting expectations for continued strong demand.

Despite briefly reaching a $1 trillion valuation, Micron was still trading at a lower forward earnings multiple than major U.S. stock indexes. Reuters reported that Micron was valued at about 8.42 times expected earnings over the next 12 months on May 26, 2026, compared with 22.15 times for the S&P 500 (SPX) and 26.23 times for the Nasdaq 100 (NDX).

The stock’s outsized one-day move had a notable effect on benchmark indexes. The Motley Fool reported that, even though Micron accounts for roughly 2% of the Nasdaq Composite and 1.5% of the S&P 500 (SPX), its intraday rally on May 26, 2026 contributed more to those indexes than any of the larger “Magnificent 7” stocks.

Institutional participation in Micron has also been rising. Reuters reported that about 2,440 institutions disclosed new positions in the company in the first quarter of 2026, highlighting expanding interest from professional investors alongside the company’s rapid increase in market value and its growing role as a major global memory supplier.