SK Hynix’s market cap passed $1 trillion this week (up 9.3% in a single day), joining Samsung Electronics in the “trillion-dollar club.” That makes Korea the only country other than the US with two or more companies at that level. How exclusive that actually is: there are 14 companies worldwide above $1T, and 10 are American (Nvidia ~$5.2T, Alphabet ~$4.7T, Apple ~$4.5T, etc.). Only 4 are non-US — and two of those are Korean: Samsung (~$1.34T, #11) and SK Hynix (~$1.06T, #12). The other two are TSMC and Saudi Aramco. The honest caveat, since it’s right there in the same article: this is almost entirely an AI/semiconductor supercycle story, so it lives or dies with one sector. And the domestic side looks frothy — on the same day, retail investors sold over ₩1 trillion of SK Hynix and rotated into 2x leverage ETFs, while total ETF market cap blew past ₩500 trillion (up ₩100 trillion in just 42 days). Real milestone, but concentrated and arguably overheating.…