Micron Joins $1 Trillion Club as AI Race Powers Memory Chip Boom

Micron Technology (MU) briefly topped $1 trillion in market value for the first time on Tuesday, crowning a dizzying rally that has cemented the US' largest memory chipmaker as one of the standout winners of the AI boom. Micron's shares were last up 17.4% at $881.60 after rising as much as 19.3% earlier in the session.

The milestone followed brokerage UBS increasing its price target on the stock to $1 625 from $535 — the highest among the 46 brokerages covering the company, according to LSEG data.

Memory Chips at the Centre of AI Infrastructure

The milestone underscores memory chips' central role in AI infrastructure and reflects a broader shift in the AI trade as investors seek out companies that can benefit from Big Tech's massive spending plans after initially crowding into makers of graphics processors.

"The need for pure memory has increased rapidly over very short periods of time, and clearly, Micron sits at the centre of it," said Art Hogan, chief market strategist at B. Riley Wealth. "Today's crossing of the $1 trillion mark for Micron is just an exclamation point on the story of the massive amount of demand needed to run data centres in this AI revolution."

While Nvidia makes the powerful processors used to train and run AI models, Micron mainly produces memory chips used to store and move data. The company's ascent gives the US a strong contender in a memory-chip race that has largely been led by Asia so far.

Asian Rivals Also Closing In

The chart below shows the market value progression of the three largest memory chipmakers from July 2025 to April 2026 (indexed to 100 in July 2025):

South Korea's Samsung Electronics, the world's top memory chipmaker, has already hit the $1 trillion milestone, while SK Hynix is also closing in. Samsung's shares surged last week after it clinched an eleventh-hour deal with its South Korean union to avert a strike. However, a union representing the conglomerate's consumer electronics workers said on Tuesday it has asked a South Korean court to block a vote on the agreement. Disruptions at the world's largest memory chip maker could fuel price hikes at a time when the AI boom has already caused shortages.

Supply Crunch and Pricing Power

Shares of Micron, long viewed as one of the semiconductor industry's most cyclical names, have jumped more than eightfold in the last 12 months, thanks to strong earnings and supply chain constraints that have given it pricing power.

With technology companies racing toward artificial general intelligence, customers are committing to longer-term data centre investments that have fuelled a sharp rise in demand for advanced memory and storage, creating a supply crunch and driving price increases. Micron has said its entire 2026 high-bandwidth memory (HBM) chip supply is already sold out, a sign of how far demand is outstripping capacity. Its next-generation HBM4 products are now in production.

Institutional Favourites

The company emerged as one of the biggest institutional favourites in the first quarter of the year, according to regulatory filings. Approximately 2 440 institutions disclosed new positions in the company, including Rockefeller Capital Management and Schroders.

The entry into the exclusive $1 trillion club signals a sharp rebound from the post-pandemic period, when memory chipmakers grappled with a supply glut as demand for personal computers and smartphones weakened amid decades-high inflation.

Valuation

Micron trades at 8.42 times expected earnings over the next 12 months, compared with 22.15 for the benchmark S&P 500 index and 26.23 for the Nasdaq 100.

Market Sentiment:

The sentiment is strongly positive for Micron and the broader memory chip sector, reflecting the recognition that memory is a critical and supply-constrained component of AI infrastructure. Micron's $1 trillion milestone — achieved despite trading at a significant earnings multiple discount to the broader market (8.4x vs S&P 500's 22x) — suggests there may be further upside as valuation catches up with earnings growth. The 17.4% single-day surge on the UBS price target upgrade to $1 625 indicates that analysts are still revising estimates upward as the demand picture intensifies. The chart shows that while all three major memory makers have grown substantially since July 2025, SK Hynix has been the strongest performer (500 index points by April 2026), followed by Micron (450) and Samsung (250). For the broader market, rising gasoline prices and inflation concerns could pressure consumer spending, but enterprise AI demand appears insulated as companies continue to invest in data centre infrastructure. The potential strike at Samsung adds a supply-side risk that could drive prices even higher, benefiting Micron and SK Hynix. Micron's fully sold-out HBM supply for 2026 and HBM4 production provide exceptional forward visibility. The eightfold share price increase over 12 months is extraordinary, but the valuation remains reasonable relative to the S&P 500. The key risks are a potential slowdown in AI capex, cyclical downturns in memory pricing, and geopolitical tensions affecting supply chains. However, the current demand-supply imbalance and long-term customer commitments suggest the cycle has further to run. Micron's entry into the $1 trillion club is a milestone, but the fundamentals suggest the story is not yet fully priced in.

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