Micron stock drops after-hours as Samsung HBM4 report rattles Nvidia supply bets
Micron shares fell 2.9% to $383.24 in after-hours trading Monday amid reports Samsung will begin mass production and shipment of HBM4 memory for Nvidia’s upcoming “Vera Rubin” AI chips. Industry sources say Samsung passed Nvidia’s quality checks, while SK hynix and Micron are expected to split the rest of early supply. No official confirmation on volumes.