Stock Market Today, Dec. 18: Micron Technology Surges on Record Results and News It Is 'Sold Out'
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By Emma Newbery – Dec 18, 2025 at 6:03PM ESTNASDAQ: MUMicron TechnologyMarket Cap$254BToday's Changeangle-down(10.21%) $23.03Current Price$248.55Price as of December 18, 2025 at 4:00 PM ETRecord results, surging AI memory demand, and fresh analyst upgrades are resetting expectations for this chipmaker, today, Dec. 18, 2025.ExpandNASDAQ: MUMicron TechnologyToday's Change(10.21%) $23.03Current Price$248.55Key Data PointsMarket Cap$254BDay's Range$245.00 - $263.6552wk Range$61.54 - $264.75Volume65MAvg Vol26MGross Margin40.17%Dividend Yield0.20%Micron Technology (MU +10.21%), a leading memory and storage chipmaker, closed Thursday at $248.55, up 10.11%. Trading volume reached 63.9 million shares, about 139% above its three-month average of 26.7 million shares. Micron Technology IPO'd in 1984 and has grown 17,528% since its initial public offering. Today's move followed record fiscal Q1 2026 results and a blowout revenue outlook. Micron beat estimates on both earnings per share and revenue. Investors will be watching how high-bandwidth memory growth might shape Micron’s margins and future cash generation. How the markets moved todayThe S&P 500 (^GSPC +0.79%) rose 0.79% to 6,774, while the Nasdaq Composite (^IXIC +1.38%) gained 1.38% to finish at 23,006. Within semiconductor memory manufacturing, major chipmakers rallied alongside Micron as investors reassessed the sector’s earnings power in an AI-driven cycle.What this means for investorsMicron's earnings surprised markets today, prompting a double-digit price surge and boosting other AI stocks. It reported quarterly revenue of $13.64 billion, up from $8.71 billion for the same period last year.Business chief Sumit Sadana told investors the company is "sold out." It already has agreements to sell its entire high-bandwidth memory (HBM) supply in 2026. It forecasted HBM revenue would rise from $35 billion in 2025 to around $100 billion in 2028.Various analysts increased their Micron price targets. Morgan Stanley (MS 1.10%) said it is a top U.S. semiconductor pick and increased its price target from $338 to $350, an upside of over 40%.Read NextDec 18, 2025 •By Joe TenebrusoWhy Micron Stock Jumped TodayDec 18, 2025 •By Jose NajarroMicron Just Gave Amazing News to AI Stock InvestorsDec 18, 2025 •By Jeremy BowmanWhat AI Bubble?
This Chip Stock Just Said the AI Boom Is Alive and WellDec 17, 2025 •By Scott LevineWhy Micron Stock Is Soaring in After-Hours TradingDec 17, 2025 •By Parkev Tatevosian, CFAShould Investors Buy Micron Stock Before the Huge Investor Update?Dec 13, 2025 •By John BallardIs Micron Technology Stock a Buy Right Now?About the AuthorEmma Newberry is a contributing Motley Fool cryptocurrency analyst covering digital currencies and blockchain trends. She previously wrote for Motley Fool Money (formerly The Ascent) on personal finance, investing, retirement readiness, and crypto. Earlier in her career, Emma founded an English-language newspaper in Colombia and contributed to Olympic city bid campaigns. She holds a bachelor’s degree in English literature with creative writing from the University of East Anglia in the UK.TMFemmanewberyStocks MentionedMicron TechnologyNASDAQ: MU$248.55 (+0.10%) $+23.03*Average returns of all recommendations since inception. Cost basis and return based on previous market day close.Advertisement