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Korea Exchange Triggers Circuit-Breaker as Chip Giants Plunge 12%

6/24/2026

Summary

Story summary

The Korea Exchange activated its fourth circuit-breaker this year after the Kospi plunged about 10% on June 22.
SK Hynix and Samsung Electronics each fell over 12% before trading halted, prompting foreign investors to sell $2.5 billion and retail investors to buy a record 8 trillion won.
Leveraged ETFs tracking the chip giants deepened the drop, with a Samsung-linked product losing over 25% and U.S. tech futures slipping after SK Hynix signaled slower HBM4 production.

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Story summary

The Korea Exchange activated its fourth circuit-breaker this year after the Kospi plunged about 10% on June 22.
SK Hynix and Samsung Electronics each fell over 12% before trading halted, prompting foreign investors to sell $2.5 billion and retail investors to buy a record 8 trillion won.
Leveraged ETFs tracking the chip giants deepened the drop, with a Samsung-linked product losing over 25% and U.S. tech futures slipping after SK Hynix signaled slower HBM4 production.