Why Micron (MU) fell 2.93%
Micron (MU) fell 2.93% on September 28, 2026 — Chip stocks slide as U.S.-Iran tensions hit tech.
What happened
Broad semiconductor selloff triggered by renewed U.S.-Iran tensions and oil price spike, dragging down the entire chip sector including DRAM and memory leaders.
Why it moved
Micron's large DRAM and HBM exposure moves with sector risk-off; geopolitical escalation and recession fears force traders to exit growth-sensitive memory positions despite tight supply fundamentals.
Why it matters
Within AI Memory, Micron is a core DRAM and HBM beneficiary of the structural shortage driving the supercycle, but macro flight-to-safety overrides that thesis in the immediate term — sector momentum matters more than…
What would break the thesis
If tensions ease and oil reverses, the DRAM supply tightness thesis re-engages and Micron could snap back sharply; watch for any sign of hyperscaler capex slowdown, which would genuinely weaken the underlying demand…