SK Hynix shares plunge over 10% amid US inflation data and AI financing worries
On October 15, 2026 SK Hynix’s Seoul‑listed shares fell more than 10% as hotter U.S. consumer‑price numbers and expectations of another Federal Reserve rate hike raised concerns about borrowing costs for AI‑related investment. The drop was mirrored in its Nasdaq‑listed ADRs, which closed 6.06% lower at $147.55 and slipped to $141.71 in after‑hours trading. The sell‑off was the steepest seven‑day decline for the stock since the 2008 financial crisis, prompting a 20‑minute trading halt on the Korea Exchange.
Why it matters
Analyst Seo Sang‑young said the market is reacting to financing sustainability for AI projects, suggesting further downside pressure. Mirae Asset’s Mixo Das noted the lack of new buyers after share‑buyback programs ended, which could keep the stock under pressure.
Key facts
- 1SK Hynix shares fell 11.42% to KRW 1,257,000 ($929.92) in Seoul. benzinga.com
- 2The ADR closed 6.06% lower at $147.55 on Wednesday. finance.yahoo.com
- 3In extended trading the ADR fell to $141.71, a 3.96% drop. finance.yahoo.com
- 4U.S. consumer prices rose 3.7% year‑over‑year in September. finance.yahoo.com
- 5The Fed’s policy rate was set to a range of 3.75%‑4% on Sept. 16, with another hike expected. finance.yahoo.com
- 6SK Hynix sank 11.06% in a seven‑session losing streak, the worst since 2008. benzinga.com
Open questions
- Two materials report different percentage declines for the same price move: 11.42% versus 11.06%.
Summary written by AlphAI AI Desk from 6 of 6 sources. Not investment advice. Figures are as stated by the linked sources.