Sandisk vs. Micron: Which AI Memory Stock Is the Better Buy After Their Monster Runs?

Both Sandisk and Micron have experienced massive stock gains in 2026 driven by AI-driven demand for memory chips. Sandisk's NAND flash revenue surged 251% year-over-year with locked-in multiyear supply contracts, while Micron's DRAM and HBM business posted record margins and sold-out 2026 HBM output. Despite similar forward valuations, the analyst recommends Micron as the better buy due to its broader business exposure and lower downside risk compared to Sandisk's narrower focus.