Sandisk is no longer the Western Digital flash leftover that listed after the parent-company spin. The company spent the latest fiscal year converting a quarterly NAND spot business into multi-year contracted supply for artificial-intelligence infrastructure. The fourth-quarter print is the first full look at what that conversion does to the income statement. Datacenter revenue more than doubled sequentially as the QLC Stargate platform, a high-density flash product aimed at AI data lakes, began shipping for revenue. The investment debate is whether those contracts rewrite the cycle or merely capture its peak.
The mechanism is the New Business Model book. Eight customers now sit under ten agreements that commit more than half of next year's bits at floor pricing, backed by third-party financial guarantees. Remaining performance obligations sit above $91 billion. Cash-backed guarantees exceed $16 billion. Gross margin printed near 85 percent in the closing quarter, a level NAND companies historically reach only at cycle tops. Consumer revenue fell by nearly a third in the same period, a reminder that price rationing still destroys demand outside the contracted book. That split is the entire argument: contracted offtake can stabilize mix, but it cannot repeal elasticity in the uncommitted channels.
The equity now capitalizes a mid-two-hundred-billion-dollar franchise on a trailing year that still includes the trough. Forward multiples compress into the high single digits if the first-quarter guide holds, which is the market saying the run-rate is real. The bear case is that those floors get renegotiated the moment spot NAND rolls over and that Flash Ventures, the Japanese wafer joint venture with Kioxia, still sets how much supply Sandisk can actually deliver. Does the contracted book survive the first down-cycle, or does the multiple reprice as if this were still a commodity memory name?