KOSPI Posts Biggest Monthly Drop Since 2008 as Korean Retail Investors Flock Back to U.S. Stocks
N.R. Finch
South Korea's KOSPI suffered its steepest monthly fall since the 2008 financial crisis in July, while retail investors poured a record $4.6 billion into US equities — the government's tax-incentive 'repatriation accounts' saw their first-ever monthly deposit decline.
How bad was the KOSPI sell-off, and what drove it?
KOSPI has fallen 33% from its June peak. Samsung Electronics and SK Hynix alone account for 76% of roughly ₩2,257.8 trillion in lost market value.
This means → the crash is a concentrated semiconductor rout, not a broad-based bear market.
Three forces amplified the slide: doubts over AI capex durability, rising Chinese chip competition, and forced selling by leveraged ETFs — funds that magnify price swings — linked to chip stocks.
Over the same period, the Nasdaq was essentially flat, sharpening the contrast that drove capital abroad.
Where did retail money go?
Korean retail investors bought $4.6 billion in US stocks in July, far above the 2025 monthly average of $2.7 billion and the highest single month this year.
This means → for the first time since February, retail net purchases of US equities exceeded net purchases of domestic stocks.
In plain terms = Korea's "ant" investors voted with their wallets — US stocks got the money, the home market got a shrug.
What happened to the government's repatriation push?
In March the government launched "repatriation investment accounts," offering tax breaks to investors who sell foreign holdings and reinvest domestically.
Account deposits fell in July for the first time since inception; meanwhile, active cash in domestic trading accounts dropped to ₩102.8 trillion, down sharply from a record ₩140 trillion peak in early June.
In plain terms = the tax carrot could not offset portfolio losses — the policy toolkit failed against a crisis of confidence.
The won rallied — so why didn't that keep capital at home?
The won rose 8% against the dollar in July, its best month since November 2022, boosted by SK Hynix's $26.5 billion ADR offering and partial fund repatriation.
Yet the stronger won actually spurred more overseas buying — a higher exchange rate reduced the incentive to convert foreign gains back to local currency, encouraging investors to add dollar assets.
This reflects a paradox: the stronger the won, the lower the friction for capital outflows — appreciation itself became a catalyst for going abroad.
What comes next?
Bank of America analysts warned that if Korean equities keep underperforming US stocks, domestic retail outflows will re-emerge; "the path to a virtuous capital-flow cycle that supports sustained won appreciation is extremely narrow."
NH Investment Securities analyst Kwon Ah-min said investors "have grown tired of the domestic market" and the KOSPI plunge reinforced the view that 'US stocks are the right call.'
This means → whether this outflow reverses once KOSPI stabilises will be the real test of the government's repatriation policy.
Content is for reference only, not financial advice.