Sandisk Corporation

SanDisk makes NAND flash memory — the storage chips inside every server, phone and car — and it just spent a year being the highest-return AI trade almost nobody put in the same sentence as the accelerator names. The stock has now pulled back 10-20% after everyone piled in.

• The earnings power arrived and it isn't small: Q3 revenue was $5.95B with a 78% gross margin and $24.43 EPS, translating a straight NAND price cycle into fatter earnings than the market had modeled at any point last year.
• Beats are structural, not one-offs: SanDisk has surprised by 12% to 71% for four straight quarters as memory pricing outran every model — that is what happens when AI cluster demand collides with a decade of memory undersupply.
• The next leg has a source: NVIDIA's own CFO called memory pricing 'extreme' and supply-constrained through fiscal 2028, meaning the customer most exposed to the shortage has just re-underwritten the bull case in public.
• The setup carries real optical risk though: the stock is up ~485% YTD sitting on 51x TTM earnings, so anything less than another blowout at the November print invites the classic memory de-rate that has burned this sector every prior cycle.

The move has legs as long as the AI build cycle keeps pulling on memory faster than fabs can add wafers. What restarts the cooling is a November print showing enterprise/AI mix still pushing margins higher; what would end the run early is the first sign of channel inventory building.