Micron, Sandisk, Marvell stocks jump, leading chip sector gains - Yahoo Finance

On July 9, 2026, Micron Technology's stock surged over 4%, leading a broader rally in the semiconductor sector. Stocks of Sandisk, Western Digital, Marvell, Broadcom, and others also rose. The move wa... Read original →

The HBM shortage is catalyzing a structural reshaping of the semiconductor stack. Beyond boosting pricing power for Micron and SK Hynix, it’s accelerating co-optimization between sub-3nm packaging and EUV lithography. Silicon wafers—especially 300mm with extreme defect control—are emerging as the critical upstream choke point. Micron’s decade-long wafer pact with GlobalWafers (Taiwan, China) is less about cost and more about de-risking against U.S.-China tech decoupling, given domestic wafer capacity remains under 10% globally despite CHIPS Act incentives. SK Hynix’s oversubscribed Nasdaq IPO pressures Samsung to fast-track HBM4, while Intel may be forced to open its foundry ecosystem to retain AI clients. Over the next 18 months, HBM supply concentration will intensify; memory players outside the AI datacenter tier face irreversible margin erosion. This rally signals the industry’s entry into the 'memory wall' phase of AI infrastructure buildout—not speculative froth.