Kioxia (KXIAY), the Japanese memory giant that delivered a staggering 540% gain in 2025 as the best-performing stock in the world, just made another big call. On Feb. 11, Kioxia forecast sharply higher demand for NAND memory chips, quickly lifting sentiment across the memory sector. Sandisk (SNDK) jumped more than 8% the same day, pushing AI infrastructure names higher as investors took the news as a sign that demand for data storage remains strong.
The reason is pretty straightforward. Many memory analysts now expect demand to stay ahead of supply well into 2026 and beyond, and that backdrop has already helped SNDK shares rise more than 1200% over the past six months. Kioxia’s latest outlook fits right into that view, and it matters even more because the two companies are closely linked.
