South Korea’s stock market has emerged as one of the world’s strongest performers in 2026, with the benchmark KOSPI surging 100% this year and surpassing gains recorded during the height of the dotcom boom.
The rally, driven largely by artificial intelligence-linked semiconductor demand, has pushed South Korean equities into record territory and transformed the country into one of the most closely watched markets globally.
According to market data cited by Bloomberg, the KOSPI has climbed from 5,000 to 8,000 within months, fueled by explosive gains in chipmakers including SK Hynix and Samsung Electronics.
The benchmark’s performance is now approaching the Nasdaq 100’s 102% rise during 1999, just before the dotcom bubble burst. However, analysts argue the current rally reflects structural demand shifts tied to artificial intelligence infrastructure rather than speculative excess alone.
The AI boom has sharply increased global demand for high-bandwidth memory chips used in data centres and advanced computing systems, strengthening the outlook for Korean semiconductor exporters. Reuters reported that SK Hynix recently crossed the US$1 trillion market valuation mark as investors poured into AI-linked stocks.
South Korea’s market capitalisation has also climbed rapidly this year, overtaking several developed markets including Canada and France. Analysts say the country’s growing dominance in the AI supply chain has fundamentally reshaped investor sentiment toward Korean equities.
Still, some strategists caution that the rally remains heavily concentrated in a handful of technology and semiconductor stocks. Research cited by Moneycontrol showed that Samsung Electronics and SK Hynix together accounted for more than half of the increase in the KOSPI’s market capitalisation since early 2025.
Investor enthusiasm has also triggered signs of speculative activity across the market, with trading volumes surging and retail participation rising sharply amid fears of missing out on AI-driven gains.
