TSMC, Samsung, and SK Hynix now dominate Korea and Taiwan's stock markets, turning national indexes into concentrated AI semiconductor bets as KOSPI hits record highs.

A global reshuffling in stock-market hierarchy is underway. AI is propelling Taiwan and South Korea past a couple long-established Western countries.

Asian markets are making waves. South Korea's Kospi and Taiwan's stock market have surged, driven by the AI boom. These markets are now outperforming many Western exchanges.…