AI infrastructure – Nokia hit a 27-year high above $16.63, Micron surged to a record $916.76 and topped $1 trillion in market cap, and BlackBerry climbed to $8.6—each move tied to investor excitement around the AI “infrastructure” stack: networking, memory chips, and cybersecurit
By the time Tuesday’s trading was underway, the same theme was pulling three very different stock charts in the same direction.
Nokia shares jumped to over a twenty-seven-year high of $16.63. Micron ripped higher to a record $916.76 and pushed past $1 trillion in market value for the first time. BlackBerry climbed to a fresh one-year high of $8.6.
For investors, the message is straightforward: money is flowing toward the companies building the physical backbone behind artificial intelligence—networking gear, memory chips, and security software.
While Nokia and BlackBerry finished the regular session over 6% higher each, Micron surged over 19%.
Nokia’s rally has been driven by investors revisiting how the telecom equipment maker fits into high-speed AI data infrastructure. The stock’s move came after investors reassessed Nokia’s role as it expands its AI and cloud networking business and strengthens its optical networking capabilities following its acquisition of Infinera last year. The company has also been seeing support from multiple catalysts tied to its growth plan: strong Q1 results. rising AI and cloud revenue. new partnerships with AMD and Super Micro last week. and FCC approval for its broadband products.
Retail sentiment on Stocktwits around Nokia stayed “bullish.”
Micron’s surge looked even more dramatic. The shares topped out at a record high of $916.76 as demand for advanced AI memory chips remained elevated. The focus has been on Micron’s HBM3E and HBM4 memory products, which are widely used in AI accelerators and high-performance computing systems.
Tuesday brought a double dose of momentum for the stock. Micron also received a major vote of confidence from UBS, which increased its price target on MU to $1,625 from $535. UBS tied that adjustment to stronger long-term earnings potential linked to AI demand and improving conditions across the memory chip industry. The new price target implies 81% upside potential to the stock’s closing price on Tuesday. UBS projected that structural shifts tied to AI adoption may drive significantly stronger earnings and free cash flow for Micron through 2029.
After Micron surpassed $1 trillion in market value on Tuesday, it cemented its status as one of the standout breakout winners of the AI boom. Retail sentiment around the stock moved to “extremely bullish” from “neutral” the previous day.
BlackBerry’s move followed a different route, but the same destination. The stock climbed to a fresh one-year high of $8.6 as investors continued to favor the company’s automotive software and cybersecurity position. BlackBerry’s QNX operating system remains embedded in millions of connected vehicles and industrial systems worldwide. which gives the company a long-running foothold in the devices AI will ultimately rely on.
Investors also reacted to BlackBerry’s progress last week. including restructuring operations and securing government-related cybersecurity certifications for its AtHoc communications platform. The company’s software and licensing revenue streams have helped improve investor confidence. Retail sentiment around BlackBerry stayed in “extremely bullish” territory.
Zooming out across the three names, the year-to-date picture shows how concentrated the rally has become in the AI-adjacent infrastructure trade. So far this year, MU stock has surged over 213%, while NOK and BB stocks have gained 154% and 122%, respectively.
The stock moves come with the familiar volatility of hot themes—fast gains. rapid sentiment shifts. and big expectations—but Tuesday’s session made one thing clear in the numbers alone. Networking equipment, memory chips, and cybersecurity systems aren’t being treated as background players anymore. They’re the parts of the AI stack investors are betting will power what comes next.
Nokia Micron BlackBerry 52-week highs AI networking optical networking Infinera acquisition HBM3E HBM4 AI memory chips UBS price target QNX AtHoc cybersecurity certifications $1 trillion market cap