Korea’s KOSPI Surges 11% in Historic Rebound, Outpacing Crypto

One day after recording its worst single-session loss in history, South Korea’s KOSPI surged more than 11% on Thursday, staging one of the most dramatic reversals the index has ever seen.

No major economy is more acutely wired to Middle East instability than Seoul — and this week proved it.

The Bounce of KOSPI and KOSDAQ

South Korea’s two main stock indices — the large-cap KOSPI and tech-heavy KOSDAQ — are among Asia’s most actively traded markets and a key barometer of Korean retail investor sentiment.

By mid-morning, the KOSPI had climbed to 5,682 — up from Wednesday’s close of 5,093 — after touching an intraday high of 5,715. The KOSDAQ recovered above the 1,000 level, gaining over 11%. A buy-side sidecar was triggered in early trade — a striking contrast to Wednesday’s sell-side sidecar and full circuit breaker halt. The won strengthened sharply, pulling back from an overnight high of 1,505 to trade near 1,461.

The catalyst: oil prices stabilized, with Brent crude holding at $81.40 and WTI at $74.66, and reports of back-channel contacts between Washington and Tehran lifted sentiment across Asian markets. Wall Street had closed higher on Wednesday, with the Nasdaq up 1.29%, led by Tesla (+3.44%), Amazon (+3.95%), and Nvidia (+1.66%).

Samsung Electronics and SK Hynix — which had shed 21% and 22.75% respectively from their late-February peaks — rebounded 13–15% in early trade. Foreign investors, who had used both stocks as first-resort liquidity during the panic, returned as net buyers of over 710 billion won by mid-morning. Retail investors added another 600 billion won alongside them.

Why Korea Fell Harder Than Anyone Else

The scale of the crash and recovery reflects a structural reality. Over the two sessions on March 3–4, the KOSPI and KOSDAQ fell 18.43% and 17.97%, respectively — the worst and second-worst performances globally. Japan fell 6.57%, Taiwan 6.46%, and China’s Shenzhen Composite just 3.76%. US indices barely registered, declining less than 0.35% combined.

Korea imports over 70% of its energy from the Middle East and operates an export-dependent economy with high sensitivity to commodity shocks. When US-Israel strikes on Iran triggered Strait of Hormuz closure fears, global risk was concentrated in Seoul with exceptional force. Wednesday’s KOSPI decline of 12.06% surpassed even the 12.02% drop recorded the day after 9/11 — a threshold that had stood for 25 years.

What Comes Next

Analysts are cautiously optimistic but warn that the path forward depends on geopolitical developments. One analyst argued that a prolonged Hormuz blockade is self-defeating for Iran. It would cut Tehran’s foreign exchange revenues while inviting further military response. Another pointed to a potential mediator as the key turning point. At current index levels, he said, “the case for buying is strong.”

Mirae Asset set a near-term KOSPI recovery target of 5,800. Kiwoom Securities suggested the two-day selloff had effectively front-loaded the war risk premium in full.

What It Means for Crypto

For crypto markets, as BeInCrypto reported Wednesday, Korea’s retail investor base showed some resilience during the crash — with newly listed tokens on Upbit and Bithumb posting double-digit gains even as equities collapsed. But Thursday’s equity rebound may quickly reverse that dynamic.

With foreign and retail investors pouring over 1.3 trillion won back into equities in a single morning session, the stock market’s gravitational pull reasserts itself. Korea’s crypto volumes had already dropped by more than 80% during the KOSPI’s 85% bull run since President Lee’s election, and a sharp V-shaped equity recovery threatens to drain whatever crypto inflows emerged during the two-day panic.

The won pulled back from 1,505 to near 1,461. That partial recovery reduces the currency-hedge appeal that briefly boosted digital assets. The effect is already visible in the data: Bitcoin rose 6.4% in dollar terms over the past 24 hours, but gained only around 5% on Upbit in won terms — the won’s sharp rebound absorbed more than a percentage point of that gain.

If geopolitical risk continues to ease, the KOSPI could push toward Mirae Asset’s 5,800 target. Korean retail capital — historically the most swing-sensitive in global crypto markets — would likely follow equities. Not digital assets.