KOSPI: World's Hottest Market Doubled This Year; Goldman Sees ~40% More

South Korea’s stock market has emerged as one of 2026’s strongest performers, with the KOSPI roughly doubling as major semiconductor names led a spectacular rally. The surge has been driven primarily by outsized corporate profits and tight supply conditions in memory chips that have boosted pricing.

Goldman Sachs Research attributes the rally to a prolonged semiconductor memory cycle and upward revisions to earnings estimates, arguing that long-term supply agreements and hyperscale demand for AI compute should sustain profitability for memory producers longer than markets currently price in. The firm has upgraded its view on Korean and Taiwanese equities in light of these dynamics.

Several market reports and financial outlets have noted that Goldman raised its 12-month KOSPI target—implying roughly a mid-to-high‑30s percentage upside from recent levels—reflecting the bank’s revised earnings forecasts and the stronger-for-longer chip thesis. That adjustment underscores how much of the rally is earnings-driven rather than purely speculative momentum.

The concentration of gains in a handful of large-cap chipmakers has reshaped index composition and attracted sizable inflows, but also heightened vulnerability to sector-specific shocks. Improvements in reported operating profits at Samsung Electronics and SK hynix have been particularly influential for index-level returns, while export and current-account metrics for Korea and Taiwan have improved on the back of chip sales.

Analysts say the next phase will hinge on the durability of AI-driven capex, memory pricing trends and foreign investor positioning. Upside scenarios assume sustained hyperscaler spending and continued supply discipline; downside risks include a faster-than-expected cooling in AI investment or abrupt price normalization in memory markets. Investors should weigh elevated concentration and potential volatility against the compelling earnings backdrop highlighted by major research houses.