South Korea’s Top Stock Index Crashes, Then Surges on AI Chip Rally

South Korea’s KOSPI fell sharply on Monday, June 8, before rebounding 8.18% the next day. It was the index’s strongest one-day recovery of 2026. The move was led by Samsung Electronics and SK Hynix, which together make up about 40% of the index.

SK Hynix fell 7.7% before jumping 16.01% in the next session. Samsung dropped 10.2%, then recovered 9%.

The rebound followed a wider rally in global chip…