Micron Gains Despite SK Hynix’s $38B Splurge, but Wait Thesis Intact

What happened

SK Hynix revealed a $38 billion investment plan to expand memory production, yet Micron’s stock rose, signaling that the market interprets the rival’s splurge as a confirmation of robust AI-driven demand rather than an immediate threat. The DeepValue master report already flagged that both Samsung and SK Hynix are advancing HBM4 and HBM4E qualification, which could shorten Micron’s scarcity window before its own capacity ramps in mid-2027. Micron’s fiscal Q3 2026 results were exceptional, with $41.5B revenue and 84.6% gross margin, and Q4 guidance targets $50B at ~86% margin, but filings also warn that shifts from HBM to conventional DRAM could pressure pricing. Today’s news adds to the supply trajectory while Micron’s valuation at $823 already prices in a long duration of peak margins. The report’s WAIT rating is reinforced, with an attractive entry at $700 and a 3–6 month reassessment window.

Implication

The SK Hynix investment signals sustained hyperscaler memory appetite, supporting near-term pricing, but also guarantees faster industry supply response that will likely compress Micron’s extraordinary margins by mid-2027. Current holders can maintain positions given Micron’s contract-backed revenue and $22B in customer commitments, but new money should wait for a pullback toward the $700 attractive entry. Key near-term monitors are whether Micron expands its strategic customer agreements toward 50% of revenue and whether Microsoft and Alphabet reaffirm AI infrastructure constraints into 2027. If gross margins slip below 80% or rivals secure broad HBM4 qualifications before Micron’s Singapore and Taiwan fabs ramp, the bull case weakens materially.

Thesis delta

The SK Hynix development does not shift Micron’s core thesis but adds weight to the existing risk that competitor HBM supply will arrive sooner than the market implies. The WAIT rating remains appropriate as the industry’s supply response accelerates, making current multiples dependent on sustaining peak-cycle economics into 2027.