Micron shares jump 70% in 2026 as HBM4 memory tech ramps up and export rules tighten.

Micron Technology's shares have surged over 70% in 2026, driven by strong demand for its high-bandwidth memory (HBM) products, including the newly launched HBM4 technology which offers 2.8TB/s bandwidth and 20% better energy efficiency. The company's entire 2026 HBM inventory is secured through long-term contracts, highlighting robust market confidence. Micron is also pushing for stricter U.S. export controls on semiconductor equipment to China, aiming to limit competitors' capacity expansion. Meanwhile, Seagate benefits from AI data storage demand with full 2026 allocation of its nearline HDD products, supported by major cloud providers. Future performance depends on continued investment from hyperscale tech firms.