Why Micron (MU) Shares Are Getting Obliterated Today - Yahoo Finance

Micron's stock plunged 13.6% in the afternoon of June 23, 2026, following news that SK Hynix, a major South Korean memory chipmaker, is slowing its high-bandwidth memory (HBM) expansion. While this in... Read original →

SK Hynix’s pivot from HBM to higher-margin standard DRAM exposes fragility in the AI memory supply chain. Technically, NVIDIA may face near-term HBM3E bottlenecks, accelerating CoWoS and chiplet integration to mitigate bandwidth constraints. Under tightening U.S.-South Korea EUV export controls, such reallocation heightens geopolitical friction and operational complexity. Samsung is likely to seize HBM market share, while Micron’s AI-driven valuation unravels—though its leadership in 1β-node DRAM yields remains a key moat. Over the next 12–24 months, the industry will prioritize profitability over aggressive capex, signaling a shift from AI hype to cash-flow discipline despite sustained HBM demand.