South Korea s stock market overtakes Canada as gains in chip stocks send KOSPI to the top tier

South Koreas equity market has climbed another rung on the global ladder. This week the KOSPIs surge pushed South Korea past Canada in the ranking of the worlds largest stock markets by market capitalization, according to FactSet.

As of Thursday, South Koreas total market capitalization was $4.6 trillion versus $4.1 trillion for Canada. The KOSPI notched another all-time high on the same day, extending a run that saw the market overtake the U.K. only last week. That leaves South Korea ranked behind only the U.S., China, Japan, Hong Kong and India in the list of the worlds biggest markets.

The leapfrog reflects a powerful sectoral divergence. South Koreas rally has been led by semiconductor and technology names notably SK Hynix and Samsung Electronics whose combined weighting in the index is roughly 45%. Both companies share prices have more than doubled this year, driven by demand tied to the artificial-intelligence infrastructure build-out. That technology-dominated top of the KOSPI contrasts sharply with Canadas market, where the four largest stocks include two banks and an energy company; Shopify is the only major tech name among them.

Market breadth and valuation dynamics make the difference clearer. The KOSPI has jumped about 77% year to date, yet on a next-twelve-months earnings basis it looks relatively inexpensive: FactSet puts the KOSPI at about 8 times expected earnings. By contrast, the FTSE 100 trades at roughly 12.3 times forward earnings and Canadas S&P/TSX sits around 15 times. In other words, outsized gains tied to a handful of tech and chipmakers have driven the market higher without stretching the index-level price/earnings multiple as much as in some developed markets.

The impact of a few large tech bellwethers extends beyond South Korea. Three companies Taiwan Semiconductor Manufacturing Company, Samsung Electronics and SK Hynix now make up about a quarter of the MSCI Emerging Markets index. Their dominance has helped the broad emerging-markets ETF EEM rise roughly 20% in 2026, comfortably outpacing the S&P 500s 7% gain.

On Thursday the KOSPI closed at 7,490, up 1.43% on the session. By comparison, Canadas S&P/TSX is up about 7% year to date and the U.K.s FTSE 100 around 4.72% respectable returns, but left trailing by the chip-driven surge in Korea.

The market-structure difference matters for investors: Canadas performance has been steadier and more tied to traditional sectors such as banking and energy, while South Koreas returns reflect concentrated strength in companies that are central to the global AI and data-center buildout. That concentration can amplify gains in a rally but also concentrates risk if the cycle turns.

For now, the chip cycle and related technology themes show no signs of petering out, and South Koreas market capitalization propelled by a small number of very large, rapidly appreciating stocks has vaulted it into a higher rank among global equity markets.