A blistering artificial intelligence-fueled rally has propelled shares of Intel Corp. (INTC) and Sandisk Corp. (SNDK) to hundreds of percent in gains over the past year, cementing their status as standout performers in the U.S. semiconductor space. A sharp sector-wide pullback in recent sessions has amplified investor scrutiny of the two names, drawing clear distinctions between their underlying business trajectories and risk profiles.
Intel shares have climbed 528% over the past 12 months, notching a 259% advance so far in 2026. The stock has repeatedly hit record highs during the stretch, rallying roughly 220% in the last three months alone.
Sandisk’s gains have been even more extreme. The memory and storage specialist, which spun off from Western Digital Corp. (WDC) just over a year ago, has surged 726% year to date — the strongest return among all Nasdaq 100 components. Since its spinoff, Sandisk’s stock has skyrocketed roughly 5,370%.
The broader semiconductor selloff has tested both historic runs. The PHLX Semiconductor Index tumbled more than 7% in a single trading day recently, with Intel sliding 8.7% and Sandisk plunging 13.6% in the same session. The steep single-day drops underscore the amplified volatility facing high-flying chip names trading at elevated price levels.
The two stocks have been lifted by distinct sets of catalysts, reflecting separate lanes of the AI semiconductor boom.
For Intel, the rally has been anchored by a turnaround narrative centered on U.S. government backing and a strategic pivot to contract chip manufacturing. An $8.9 billion federal investment — equal to a roughly 10% stake in the company at the time of the deal — served as an early catalyst, bolstering market confidence in its foundry expansion plans. Intel has redirected more resources toward manufacturing chips for external clients, moving beyond its legacy model of designing and producing only its own products.
Over the past year, Intel has unveiled a string of high-profile customer agreements, including a pact to manufacture 3 million custom Tensor Processing Units for Alphabet Inc. (GOOGL)’s AI cloud infrastructure. It is also partnering with SpaceX and Tesla Inc. (TSLA) on the $55 billion Terafab project, where it will design and build advanced AI and aerospace processors. Market reports have also tied Apple Inc. (AAPL) to plans to adopt Intel processors in some Mac devices and future iPhones, though neither company has officially confirmed the arrangement.
Financially, Intel posted first-quarter 2026 revenue of $13.6 billion, beating the consensus analyst estimate of $12.4 billion. Adjusted earnings per share also topped Wall Street’s $0.01 forecast. Its foundry division generated $5.4 billion in quarterly revenue, up 16% year over year and 20% sequentially. The unit remained unprofitable, however, recording an operating loss of $2.4 billion — a $72 million improvement from the prior quarter. Intel has said it expects foundry operating losses to narrow through 2026 as production ramps and yield rates improve.
Sandisk’s surge, by contrast, has been underpinned by explosive, earnings-accretive growth in its data center storage business, a critical building block for AI infrastructure. The company produces flash memory and high-end storage solutions used in smartphones, laptops, connected devices and cloud data centers, with generative AI workloads driving surging demand for its high-margin data center offerings.
In its fiscal third quarter ended April 3, Sandisk reported total revenue of $5.95 billion, up 251% year over year and 97% quarter over quarter. GAAP net income reached $3.6 billion, swinging from a net loss of $1.93 billion in the year-ago period, with earnings per share coming in at $23.03. Data center revenue hit $1.46 billion for the quarter, a 645% jump year over year and a 233% increase sequentially, now accounting for roughly 25% of total sales. On the company’s earnings call, Chief Executive Officer David Goeckeler described the quarter as a fundamental inflection point for its shift toward higher-value end markets.
The differing fundamental trajectories have translated into starkly different risk profiles and valuation frameworks for the two stocks.
Intel currently trades at a trailing price-to-earnings ratio above 900 — a wide premium to the 37 average P/E for U.S. technology stocks. Market observers note that many of Intel’s recently unveiled partnerships have yet to translate into meaningful, recurring revenue or bottom-line contributions, and its core foundry operation remains deeply loss-making. Much of the stock’s gains have been driven by forward-looking expectations rather than realized financial results.
For Sandisk, the bulk of market concern has centered on technical overheating rather than fundamental misalignment. Prediction market platform Polymarket recently labeled the stock the most overbought in history after its Relative Strength Index hit 99. A reading above 70 is generally considered overbought under standard technical analysis frameworks, signaling potential near-term correction risk.
On a fundamental valuation basis, Sandisk carries a forward P/E ratio of 34.7. That marks a premium to the 23.3 multiple for Nvidia Corp. (NVDA) and 24.6 for Alphabet, though the premium comes alongside triple-digit revenue growth and accelerating profitability.
Wall Street remains split on the sustainability of both rallies. While broad AI demand is widely viewed as a durable long-term tailwind for the semiconductor sector, investors continue to weigh the pace of operational and financial progress against the steep share price gains already priced into both Intel and Sandisk.
