Micron Slips 3% Despite Record Quarter and Above-Consensus Guidance; Western Digital Dips, SK Hynix Drifts - 24/7 Wall St.

Micron's 3% slide on record earnings is a textbook sell-the-fact: the market had already front-loaded the HBM supercycle into the multiple. The real signal isn't the beat — it's what the guidance omits. The HBM3E-to-HBM4 transition window sees all three memory majors ramping capacity simultaneously. By 2026, supply elasticity will outpace AI accelerator demand growth, compressing the price floor structurally. Technically, Micron's HBM3E yield ramp is real but incremental. SK Hynix retains architectural leverage through its early NVIDIA co-design relationship, positioning it to shape HBM4 specifications rather than merely comply with them. Micron's above-consensus guidance is essentially monetizing existing capacity, not demonstrating a generational moat. Western Digital's concurrent weakness punctures the illusion that NAND and DRAM cycles are decoupled — as AI storage demand shifts from volume to bandwidth density, legacy storage valuations are being re-anchored. On compliance, Micron's roughly 20% China revenue exposure remains an underpriced tail risk. If export controls extend to HBM SKUs, the record-quarter narrative evaporates overnight. SK Hynix's sideways drift reflects that its geopolitical risk premium is already fully baked in; Micron's is not. The 18-month question isn't who earns more — it's who holds voting power in HBM4 standardization. If Micron remains a follower rather than an architect, this earnings peak is the cycle top.