Sandisk’s stock jumps as AI infrastructure spending boosts demand for NAND Flash memory, tightening supply and lifting margins.
Sandisk (NASDAQ: SNDK) stock rose 857.8% in the first half of 2026, driven by surging demand for memory chips used in AI data centers. Tech companies’ $800 billion capex plans, largely for AI, have intensified competition for NAND Flash memory, a segment where Sandisk leads.
The company’s gross profit margins expanded to 78% in Q3 2026, up from 51% a year earlier, as supply shortages allowed price increases. Competitors like Micron Technology have also benefited from the tight market conditions.
Investor enthusiasm accelerated in January, with shares jumping 143% as the AI-driven memory boom gained visibility. Analysts expect the trend to persist as demand outpaces supply.