Sandisk gave investors a clean look at how much artificial intelligence is pulling flash storage into the market's infrastructure trade. The surprise was that a huge quarter still was not enough to make the stock reaction simple.
The company said Wednesday, August 5, 2026, that fiscal fourth-quarter revenue rose to $8.97 billion, up 51% from the prior quarter and 372% from a year earlier. GAAP net income was $6.90 billion, or $43.97 a diluted share, and non-GAAP diluted earnings were $39.25 a share.
The numbers
The clearest AI signal was datacenter revenue. Sandisk reported $2.98 billion from that end market in the quarter, up 103% sequentially and far above the $213 million it reported a year earlier. For fiscal 2026, datacenter revenue rose 437% to $5.15 billion.
Management said sequential revenue growth came roughly one-third from higher volumes and two-thirds from higher pricing. That matters because the storage boom is not only about selling more chips; it is also about a tighter market where customers are paying more for capacity.
Why the stock still slipped
The market reaction turned on expectations. Sandisk guided for fiscal first-quarter 2027 revenue of $10.30 billion to $10.80 billion and non-GAAP diluted earnings of $44 to $46 a share. Several market reports said the revenue outlook was close to, or slightly below, the consensus number investors had been using after a large run in the stock.
That is the risk in the AI trade now: a company can beat the reported quarter and still disappoint if the next-quarter bar has moved even faster. Sandisk also expanded its share-repurchase authorization by $14 billion, bringing remaining authorization to $15.5 billion, but buybacks do not answer the central question of how durable today's storage pricing is.
What to watch next
The next test is Sandisk's August 13 investor day, when investors will look for more detail on customer agreements, supply discipline, and whether datacenter demand can keep supporting unusually high margins.
For readers, the takeaway is not that AI storage demand is weak. The company just reported the opposite. The sharper point is that AI-linked stocks are being judged less on whether demand is growing and more on whether each new forecast can justify prices that already assume a lot of growth.
