SanDisk went from losses to a 78% gross margin in a year. Then its stock still fell.
Sometimes the market humbles even the most prepared investor. Today, April 30, 2026, SanDisk Corporation reported fiscal third-quarter earnings so far ahead of Wall Street’s estimates that the distance between expectation and reality was almost difficult to process. Revenue beat by more than $1.25 billion. Earnings per share came in at nearly double the consensus. Guidance for the next quarter cleared published estimates by a margin that most companies would be proud to call a full-year result. And when after-hours trading opened, the stock fell roughly 7% to 8%. Welcome to life at the top of a parabolic rally.
From a $1.93 billion loss to a 78.4% gross margin
A year ago, SanDisk was not a stock most investors wanted to discuss at the dinner table. The company had just recorded a net loss of $1.93 billion, taken a $1.83 billion goodwill impairment charge, and was trading near $35 per share. Its gross margin sat at 22.5%.
In Q3 2026, SanDisk posted net income of $3.62 billion and a gross margin of 78.4%. Revenue reached $5.95 billion, up 251% from $1.69 billion in the same period last year. That is not a modest improvement. That is a company that has rebuilt its entire financial identity in four quarters, powered almost entirely by one force: the global race to build artificial intelligence infrastructure.
SanDisk’s NAND flash memory and solid-state drives have become indispensable components inside the data centers running AI workloads. As hyperscalers push to expand capacity, demand has tightened supply and given the company the pricing power to expand margins in a way that would have seemed implausible a year ago. The stock has climbed more than 330% in 2026 alone.
3 numbers that defined the Q3 beat
The results cleared every meaningful benchmark, and three figures stood out above the rest.
- Revenue of $5.95 billion came in roughly $1.25 billion above the $4.70 billion analyst consensus, representing 97% growth from the prior quarter and 251% growth year over year from $1.69 billion.
- Adjusted earnings per share of $23.41 nearly doubled the $14.50 Wall Street estimate, swinging from a loss of $0.30 per share in the same quarter last year.
- Datacenter revenue of $1.47 billion surged 233% from the prior quarter and 645% year over year, reflecting how thoroughly AI infrastructure spending has reshaped the company’s customer base.
Gross margin expanded 55.9 percentage points from a year ago to reach 78.4%. Operating income hit $4.22 billion against a $2.70 billion estimate. CEO David Goeckeler has also secured three signed New Business Model agreements, structured around multi-year customer engagements with firm financial commitments, giving SanDisk a degree of revenue durability it did not previously have. The company carries zero debt and has an authorized share repurchase program in place.
Guidance that should have sent shares higher
If the quarterly results were striking, the forward outlook was equally compelling. For the fiscal fourth quarter, SanDisk is projecting revenue of $7.75 billion to $8.25 billion, well above the $6.49 billion Street consensus. Adjusted earnings per share guidance of $30 to $33 cleared the $22.70 consensus by a wide margin. Gross margin guidance of 79% to 81% suggests the expansion this quarter was structural rather than temporary.
Why the stock fell anyway
The post-earnings drop is less confusing once the context is clear. With shares already up more than 330% in 2026 and trading near $1,100, options markets had placed a 97% probability of a beat heading into the report.
The beat itself was therefore not a surprise. What investors needed was not just a strong result but one so decisive, and guidance so aggressive, that it could justify extending a rally of this scale even further. Any ambiguity around NAND pricing, margin durability into fiscal 2027, or whether a third hyperscaler certification will materialize this calendar year was enough to give traders pause.
Goeckeler’s track record of conservative guidance also cuts both ways. It builds credibility over time, but it also leaves room for investors to question how much further the Q4 outlook may still be understating actual performance, a question that creates hesitation rather than conviction in the immediate term.
SanDisk has made its case in a way few companies have managed this year. The harder task now is the same one Amazon faces, the same one every AI-era winner eventually confronts: sustaining the kind of results that can keep pace with a stock price that expects nothing less than extraordinary.
Disclaimer: This article is for informational purposes only and does not constitute financial advice. The author and publication are not registered investment advisors and do not provide personalized investment recommendations.