The KOSPI’s 76% surge in 2025, the strongest run among major global indices, outpacing the S&P 500 nearly fourfold, looked to many observers like a miracle, but it wasn’t - it was policy.
The mechanics are worth understanding. South Korean retail investors had become a major force in US markets - by Q3 2025, their overseas equity holdings had reached $161 billion, concentrated heavily in US stocks. This capital flight was pushing steady pressure on the won, which by late December had slid to nearly 1,500 per USD. In response, the government launched a ‘Reshoring Investment Account’ scheme: sell your foreign stocks, convert proceeds into won, reinvest in Korean equities for at least a year, and receive a full capital gains tax exemption - 100% for Q1 movers, tapering to 50% by Q3. For retail investors sitting on years of US equity gains, the math was hard to ignore.
The liquidity effect was real, but to understand why the government moved so decisively, you need to look at the economy it was defending.
South Korea is, in many ways, a chaebol republic. The top four family conglomerates (Samsung, SK, Hyundai, and LG) account for roughly 41% of GDP. The top 30 account for nearly 77%. Samsung alone makes up around 13% of GDP by value added and nearly 20% of total national exports. These are not just corporations - they are the backbone of the state. Their fortunes and the government’s are inseparable, which is why Korean economic policy has historically oscillated between reform rhetoric and quiet accommodation.
Seen through that lens, the capital repatriation push reads less like a neutral currency stabilization measure and more like a coordinated act of economic self-defense - one that happened to benefit the blue chips dominating the index. With 7.5% of GDP tied to US exports and an economy dependent on the health of a handful of conglomerates, bringing money home before potential global turbulence is survival instinct dressed up as tax policy.
The rally was real. The fundamentals like AI-driven semiconductor demand, Fed rate cuts, governance reforms were also real. But the liquidity injection that helped ignite the move was a deliberate act of statecraft.
Worth keeping in mind the next time someone calls it a bubble on empty air.
