Chip, chip ... boom? South Korea tech makers join the trillion-dollar club but some fear a short-circuit looms

South Korea’s Kospi stock market has hit record highs thanks to AI, but experts urge caution over boom-bust cycles and a heavy reliance on two chipmakersSouth Korea has leapfrogged India to become the world’s sixth largest share market, leaving equity markets in the UK, Germany and France trailing in its dust. But despite the runaway success, some are raising concerns that the Kospi index is too dependent on two freshly minted trillion-dollar chipmaking companies.Chip company SK Hynix last week...