Sandisk Is Up 613% in 2026 and Micron Isn't Far Behind. Which AI Memory Stock Has More Room to Run?

Sandisk shares are up more than 613% in 2026, versus Micron's 272%, amid AI-driven memory demand, but the article argues Micron has more room to run. Sandisk's fiscal fourth-quarter revenue rose 372% year over year, largely on NAND pricing, while Micron reported fiscal 2026 revenue of $133.2 billion and fourth-quarter DRAM revenue up 343% to $39.8 billion. Micron's custom HBM work with Nvidia and rapidly growing data-center SSD sales broaden its AI exposure; Goldman Sachs analysts see greater upside for Micron.

Analysis

The useful distinction is not simply “NAND versus HBM”; it is pricing-cycle exposure versus customer-specific product exposure. SNDK’s booked supply can support near-term visibility, but booking bits does not lock in today’s realized prices. If NAND supply responds, revenue and earnings expectations could reset before shipments weaken. A second-order risk is that higher storage prices encourage customers to defer capacity or shift workloads toward HDDs, benefiting storage alternatives such as WDC at the margin.

MU offers more ways to participate in AI memory demand, but its purported Nvidia co-design advantage should be treated as a potential moat, not yet proof of durable pricing power. Verify qualification, volume allocation, yields, and economics; HBM remains exposed to customer concentration and execution. Both businesses remain cyclical, and capacity additions can turn strong demand into oversupply.

Near term, scarcity and momentum may keep both shares supported. Over 1–3 months, earnings commentary on realized NAND pricing, HBM shipments, and supply commitments is more informative than headline revenue growth. Over 6–18 months, the key swing factor is whether capacity growth outruns AI demand. The article’s relative-value case for MU is plausible, but the reported performance gap alone does not establish that MU is cheap or SNDK is fully priced.

Key Decisions for Investors

• Consider a measured long MU / short SNDK pair rather than an outright SNDK short: it expresses a preference for broader memory exposure while reducing some sector-direction risk. Avoid sizing from the article’s return figures alone; reassess against current valuation, borrow cost, and relative momentum.
• Use upcoming MU results and guidance as the near-term confirmation point. Add only if HBM volume/qualification and data-center memory economics support the thesis; reduce if guidance depends mainly on spot pricing or if HBM execution slips.
• Track SNDK’s realized NAND pricing, bit shipments, and customer contract terms. Falling prices without compensating shipment growth would strengthen the short leg; sustained pricing and strong shipments would falsify it.
• Watch memory-company capex and industry supply guidance over the next 6–18 months. Accelerating supply, weaker AI infrastructure spending, or evidence that Nvidia can qualify alternative HBM suppliers would weaken the MU-over-SNDK thesis.