SanDisk Corporation (NASDAQ:SNDK) stock has gone from a brutal selloff to another explosive rally in just few sessions.
SanDisk jumped more than 15% Thursday, taking its gain from the July low to over 55%. That is remarkable considering the stock had previously fallen 57.65% from its peak.
Thursday’s move alone added 15%.
But the more interesting part is what happened underneath the rebound.
SanDisk’s investor day on Thursday did not simply present another bullish outlook for NAND memory.
It offered investors a new way to value the company. The story is shifting from a cyclical memory maker to an increasingly predictable AI storage infrastructure provider.
Why SanDisk Stock Is Ripping Higher
At its 2026 Investor Day in New York, SanDisk published a financial model running from fiscal 2028 through fiscal 2030.
The company expects revenue to grow at a mid-to-high-teens percentage rate a year. But the profitability targets are what change the investment case.
It expects adjusted gross margin to hold near 80% and adjusted operating margin near 75%.
Adjusted free cash flow — the money left over after taxes, factory spending and working capital — should run at roughly 50% of revenue.
Management also said it intends to return 100% of excess cash to shareholders once the business is fully funded.
"We are optimizing for growth, sustainability and returns," CFO Luis Visoso said.
The Contracts Behind The Confidence
The other major change is visibility.
No memory company forecasts three years out. Historically, memory prices moved too fast.
SanDisk thinks it can, because of agreements it calls New Business Models, or NBMs.
Instead of selling NAND flash chips at whatever the spot market pays that quarter, SanDisk signs multi-year deals with committed volumes, minimum financial guarantees and pre-agreed pricing formulas. NAND flash is the memory that keeps data when the power goes off.
Eight customers have now signed. Those contracts cover about half the chips SanDisk ships in fiscal 2027 and roughly two-thirds in fiscal 2028.
The agreements include committed volumes, minimum financial guarantees and structured pricing mechanisms.
That could make SanDisk less exposed to the extreme swings that have historically defined the NAND market.
Why AI Needs So Much Storage
SanDisk expects the market for flash memory inside data centers to reach 1.2 zettabytes by 2030. One zettabyte is roughly a trillion gigabytes.
The driver is inference — the stage where a trained AI model actually answers a question rather than learning.
Inference produces huge volumes of intermediate data that must be parked somewhere fast and cheap.
A day earlier, SanDisk and manufacturing partner Kioxia unveiled ninth-generation flash memory running at 4.8 gigabits per second, a 33% speed gain over the previous generation.
That captures the broader investment story.
SanDisk is not simply betting that AI will consume more memory. It is building a technology roadmap and commercial model designed to make that growth more profitable and more predictable.
Photo: PJ McDonnell / Shutterstock
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