Hynix shares jump 15%, driving KOSPI to record intraday high

AI-linked semiconductor stocks raise benchmark index over 87%, year to date

Relentless global rush into artificial intelligence-linked semiconductor stocks continues to propel Seoul's market. (Source photos by AP and Reuters)

SEOUL -- South Korea's benchmark stock index hit a record high during intraday trading on Monday, as SK Hynix and Samsung Electronics, the market's two biggest stocks, ride the artificial intelligence boom.