SK hynix (000660.KS) — 2025Q3 FY2025 Earnings Call Analysis

Sold Out Through 2026 With No Room to Flex

Record margins and net cash resulted in zero shareholder returns. Management is betting everything on a 2026 capex surge.

Thesis: Hynix has broken the memory cycle. 2026 HBM supply is locked. Prepurchase POs for conventional DRAM create a backlog fortress. The inference shift is a volume multiplier for eSSD and DDR5. Hynix owns the high-margin stack.

Verdict: LONG — Conviction: HIGH

Catalyst: HBM4 shipments starting in Q4 2025.

Key Risk: Simultaneous execution of M15X, Yong-in, and Indiana fabs while TSMC controls CoWoS capacity.

The Tell: Management admitted HBM4 negotiations took longer due to changing customer performance requirements. This reveals that customers are tightening control over custom specifications.

Detected Patterns

Friction Level: MODERATE_FRICTION — Bulls see a structural shift to specialty memory with locked-in backlogs. Bears see a capacity-constrained cyclical peak being masked by an inference narrative.

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