SanDisk Crushes Q3 Earnings as AI Storage Demand Drives Revenue to $5.95 Billion

# SanDisk Crushes Q3 Earnings as AI Storage Demand Drives Revenue to $5.95 Billion

The flash storage giant posted a 251% year-over-year revenue surge, shattered Wall Street estimates, and locked in $42 billion in multiyear supply contracts as the AI infrastructure boom reshapes the memory market.

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SanDisk Corporation delivered a blockbuster fiscal third quarter on Wednesday, reporting revenue of $5.95 billion that blew past the company\u2019s own guidance range of $4.4 billion to $4.8 billion and left analysts scrambling to revise their models upward. The results underscore how insatiable demand for AI infrastructure has turned flash memory\u2014once a commodity business plagued by boom-and-bust cycles\u2014into one of the hottest sectors in the semiconductor supply chain.

The numbers are staggering by any measure. Revenue climbed 97% sequentially and 251% year over year. Non-GAAP earnings per share came in at $23.41, while GAAP net income reached $3.62 billion. Most striking was the company\u2019s non-GAAP gross margin of 78.4%, a dramatic leap from 51.1% in the prior quarter, reflecting a decisive shift toward higher-value product mix and a pricing environment that continues to favor suppliers.

Data Center Revenue Explodes

The engine behind the blowout was SanDisk\u2019s data center business, which generated $1.467 billion in revenue\u2014a 233% sequential increase. Enterprise SSDs built on the company\u2019s TLC NAND technology have become essential components in the AI training and inference clusters being built by hyperscalers and cloud providers worldwide.

\u201cThis quarter marks a fundamental inflection point for SanDisk\u2014where our technology leadership is enabling a deliberate shift in our mix toward the highest-value end markets, led by Datacenter,\u201d CEO David Goeckeler said on the earnings call. \u201cWe are also advancing to a new business model built on multi-year customer engagements backed by firm financial commitments. Together, this transformation is driving structurally higher and more durable earnings power.\u201d

The company\u2019s edge revenue segment\u2014covering PC and smartphone storage\u2014also surged 118% sequentially to $3.163 billion, buoyed by increasing on-device AI capabilities that require larger, faster local storage.

$42 Billion in Locked-In Contracts

Perhaps the most consequential development was SanDisk\u2019s announcement of five multiyear supply agreements\u2014three signed during the quarter and two more in early Q4\u2014that carry a minimum revenue commitment of $42 billion for the three Q3 contracts alone and include over $11 billion in financial guarantees, with $400 million in prepayments already on the balance sheet.

Goeckeler framed NAND flash as \u201cthe only economically viable solution\u201d to deliver the capacity, performance, and efficiency needed for real-time AI inference at scale. The long-term agreements represent a structural shift away from the spot-market volatility that has historically whipsawed memory companies and their investors.

\u201cThese agreements are really tailored to individual customers. They have different elements depending on the customer, it depends on the length of the agreement that really gives us some assurance on consistency of demand,\u201d Goeckeler explained during the call.

Wall Street Recalibrates

The company issued Q4 revenue guidance of $7.75 billion to $8.25 billion, signaling that the current trajectory is accelerating rather than plateauing. Management also revised its calendar-year 2026 data center sector growth expectations upward to the \u201cmid-70s percent\u201d from \u201cthe 60s percent\u201d cited just three months earlier.

SanDisk\u2019s stock has risen approximately 3,300% over the past year, one of the most dramatic rallies in the semiconductor sector. The company further signaled confidence by announcing a $6 billion share buyback program.

Despite the massive beat, shares dipped modestly in after-hours trading\u2014a pattern increasingly common for AI-adjacent stocks where expectations have been ratcheted so high that even blowout quarters struggle to surprise. Analysts note that the dip likely reflects profit-taking after the extraordinary run rather than any fundamental concern.

Analysis: The AI Storage Supercycle Is Real

SanDisk\u2019s results confirm what memory industry watchers have been arguing for the past year: the AI infrastructure buildout is creating a structurally different demand environment for flash storage. Unlike previous NAND upcycles driven by consumer electronics, this one is anchored by enterprise customers willing to sign multiyear, multi-billion-dollar commitments\u2014a dynamic that fundamentally changes the risk profile of the business.

The 78.4% gross margin is particularly telling. It suggests that SanDisk is not merely riding volume growth but is capturing significant pricing power as customers prioritize performance and supply security over cost optimization. With QLC Stargate solutions expected to begin shipping revenue next quarter, the company has another growth lever to pull as it addresses cost-sensitive tiers of AI storage.

The broader implication extends beyond SanDisk. If AI workloads continue to grow at the rates hyperscalers are projecting, the flash memory supply chain\u2014from NAND fabrication to controller design to packaging\u2014will remain capacity-constrained well into 2027, keeping the pricing environment favorable for producers.

For investors, the key question is whether SanDisk\u2019s multiyear agreements provide sufficient earnings visibility to justify the current valuation after a 3,300% run. If the $42 billion backlog is any indication, the answer may be yes\u2014at least for now.

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Sources: SanDisk Corporation Q3 FY2026 Earnings Release, Motley Fool Earnings Transcript, BusinessWire, Yahoo Finance, Converge Digest, Investing.com, 24/7 Wall St.