South Korea’s semiconductor-driven equity rally underpins the 69.5% market-implied probability that the KOSPI sets a fresh all-time high before 2028. Dominant index constituents Samsung Electronics and SK Hynix have benefited from record high-bandwidth memory demand tied to hyperscaler AI capital expenditures, fueling 300%+ projected 2026 earnings growth and analyst targets as high as 12,000. Recent export surges, upward GDP revisions to 3–4% for 2026, and corporate buyback capacity provide additional support, while the index’s forward P/E near historic lows signals room for re-rating. Key near-term catalysts include sustained U.S. tech spending data and Bank of Korea policy signals; offsetting risks stem from Middle East geopolitical tensions, potential U.S. tariffs, and memory supply competition that could cap upside or trigger volatility.