Korea's KOSPI plunged over 8% to 7,400 on June 8, 2026, triggering a Level 1 circuit breaker (20-minute trading halt) amid sharp sell-off driven by US semiconductor rout, Fed rate hike fears, and heavy foreign selling of 543.4 billion won.

Korea's KOSPI plunged over 8% to 7,400 on June 8, 2026, triggering a Level 1 circuit breaker (20-minute trading halt) amid sharp sell-off driven by US semiconductor rout, Fed rate hike fears, and heavy foreign selling of 543.4 billion won.
businesskorea.co.kr
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KOSPI 200 futures at -6.26% matters because it turns a cash-equity puke into forced-flow risk across hedges, ETFs, and FX. Korea is one of the few markets where retail crypto liquidity, chip-stock margin, and dollar scarcity all sit on top of each other, so USD/KRW around 1,535-1,555 is the number to watch next. If foreigners keep selling while local retail catches falling Samsung/SK Hynix knives, Upbit/Bithumb KRW premiums and USDT/KRW quotes can move before the BTC chart admits there is stress.

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