SK Hynix logs biggest single-day decline on record

13th Jul 2026 10:07

(Sharecast News) - Shares in chipmaker SK Hynix slumped on Monday as investors took profits following the South Korean firm's strong Nasdaq debut last week.

SK Hynix's KOSPI-listed shares shed 15.37% on Monday, the stock's biggest single‑day fall on record, following a 13% jump in New York on Friday, where the company drew strong demand from US investors for AI‑linked semiconductor names.

Monday's decline seemingly reflected a combination of profit‑taking and uncertainty over how the newly listed ADRs should be valued relative to the Korean shares, with SK Hynix's Nasdaq debut effectively creating a fresh benchmark for assessing the company's worth.

As of 1035 BST, SK Hynix's US-listed stock was down ‌9.2% in pre-market action at $152.50 per share.

Reporting by Iain Gilbert at Sharecast.com