South Korean Stocks Hit Record 8,000: Kospi Rally Unsustainable, Foreigners Selling

South Korea's equity market has entered a euphoric phase that resembles late-cycle dynamics. The Kospi breached the 8,000 milestone on Friday, May 15, just seven sessions after hitting 7,000, representing a 14% annualized rate of gain concentrated in days. The rally has been driven by two narratives: AI chip demand benefiting Samsung Electronics and SK Hynix, and a 'physical AI' boom in robotics that encompasses Korean manufacturers.

However, cracks are widening beneath the surface. Global funds, which drove much of the rally, have begun reducing positions, according to Bloomberg data. This is classic momentumThe empirical fact that winners keep winning over the medium term. exhaustion: the least sophisticated buyers (retail and trend-followers) are left holding the bag while informed money exits. Korean bond yields have risen sharply as inflationThe rate at which prices rise across an economy. fears from the Iran war ripple through commodity-dependent Asian economies. The won has weakened, making Korean exports nominally more attractive, but the real effective exchange rate (adjusted for inflation) is deteriorating.

Valuations have become stretched. Samsung and SK Hynix trade at multiples that embed not just AI capex continuation but acceleration, leaving no room for disappointment. Compare this to regional peers in Taiwan (JPMorgan just raised Taiex targets to 50,000) and Japan (where the yen's weakness is lifting exporters). Taiwan's market may offer better value as a 'pure-play AI exposure' while offering macro stability from the yen decline.

The risk is that the Kospi becomes a leading indicator of Asia equity exhaustion. If foreign selling accelerates or US yields spike further on inflationThe rate at which prices rise across an economy. data, Korean equities, with their high beta to growth and low liquidity relative to market cap, could gap lower sharply. The 'hottest stock market in the world' narrative is mean-reverting.