Is SanDisk Stock Amplifying A Risk You Already Own?
SanDisk (SNDK) has run up 23.3% over the last five trading days, while the S&P 500 added 2.4%. A move like that in a NAND maker pulls money in. But next week’s price is not the question. What matters is what owning the stock does to your money when the market moves, because SanDisk travels much further than the index in both directions.
What Does SanDisk Do To Your Money On A Down Day?
SanDisk amplifies the market. On days the S&P 500 rose over the past year, it captured about 587% of the gain. On days the index fell, it absorbed about 304% of the loss. That split is in your favor, and it is still not a cushion.
Those are daily readings over the trailing one year and can shift. Over the past year, SanDisk ran 116.4% annualized volatility against 13% for the S&P 500, roughly nine times the movement.
Its moves tracked the index at a correlation of 0.46 over that same one-year window, so part of its direction is the market’s and part is its own. That correlation does not soften the one-year capture pair. Correlation says how much direction SanDisk shares. Capture says how far it goes.
SanDisk Turns A NAND Price Move Straight Into Profit
Revenue in fiscal Q4 2026 was $8,965 million, up 51% sequentially and 372% year over year, with about two-thirds of that sequential growth from higher pricing rather than volume. Non-GAAP gross margin was 84.6%, against 26.4% a year earlier. Almost nothing sits between a NAND price and the profit line.
Supply cannot answer quickly. SanDisk grows bits mainly through nodal transitions instead of adding wafers on its own, and demand is running ahead of supply.
Datacenter revenue reached $2,977 million in fiscal Q4 2026, up 103% sequentially. Edge revenue, the largest of the end markets, reached $5,432 million, up 48% sequentially. Consumer revenue was $556 million, down 32% quarter over quarter.
Has SanDisk Paid You Enough For The Swing?
So far, by a wide margin. SanDisk returned 1707.5% over the past year against 18.2% for the S&P 500, for a one-year Sharpe ratio of 3.02.
The swing is not a fixed property of the stock. SanDisk has signed multi-year deals with eight customers, partly fixed and partly at prices carrying floors and ceilings, and management expects those new business models to cover more than 50% of its bits in fiscal year 2027 and about two-thirds in fiscal year 2028.
That share is what to watch. A bit sold under a price floor and ceiling travels less with the NAND market, in either direction. Management has already guided non-GAAP gross margin to 83% to 85% for fiscal Q1 2027, a range that straddles the 84.6% just reported.
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