Investors seek protection as South Korea’s stock rally shows signs of overheating

Investing.com -- Investors are becoming increasingly cautious on South Korean equities after a powerful rally pushed the market to among the world’s best-performing stock benchmarks this year, according to a Bloomberg report. The shift in sentiment comes after the Kospi surged more than 90% in 2026, driven largely by enthusiasm surrounding artificial intelligence and strong gains in semiconductor stocks such as Samsung Electronics and SK Hynix. Some fund managers have begun trimming positions and adding hedges amid concerns that the rally has become crowded and vulnerable to a pullback.

The move follows a sharp selloff in U.S. technology stocks on Friday that renewed concerns about valuations and the impact of higher interest rates. Golden Horse Fund Management said it has reduced exposure in recent weeks and added derivative protection to portfolios.

The firm cited the possibility of capital rotating into upcoming initial public offerings and other investment opportunities. Signs of caution are also emerging in the options market. Demand for downside protection has increased as investors seek to remain exposed to South Korea’s growth story without risking a significant portion of this year’s gains.

Market participants remain broadly positive on the long-term outlook. Strong earnings growth expectations, continued AI-related spending, and corporate governance reforms have helped attract global investor interest over the past year. Some investors are shifting their focus beyond the market’s largest winners.

Rather than concentrating on memory and foundry leaders, money managers are increasingly looking for opportunities among suppliers and infrastructure companies further down the AI value chain. Valuations continue to support the bullish case. The Kospi trades at about 8.6 times forward earnings, below both its historical average and the valuation of Taiwan’s benchmark stock index.

Profit growth expectations have also broadened beyond the largest technology companies. Analysts noted that earnings forecasts for many non-chip companies have improved significantly since the beginning of the year. Foreign investor activity remains a key risk.

Overseas funds have been net sellers of South Korean stocks in recent weeks, although domestic retail investors have largely absorbed the outflows. Growing retail participation has raised concerns about leverage and market volatility. Some investors warn that increased use of leveraged exchange-traded funds and new derivatives products could amplify market swings if sentiment deteriorates.