AMD Stock Falls Following South Korea Market Crash: What Now?

Advanced Micro Devices, Inc (AMD) stock price has dipped following a global market sell off. AMD’s stock price closed 4.27% (21.61 points) lower on Tuesday, August 18, 2026, and fell an additional 0.39% (1.87) points in the pre-market hours. Let’s discuss why AMD stock is down today, and where it may go next.

Why Is AMD Stock Price Falling Today?

AMD’s latest price dip comes amid a larger global market meltdown. South Korea’s KOPSI index fell 5.8%, erasing nearly $235 billion from the stock market. Samsung Electronics and SK Hynix led the downtrend, falling 7.82% and 9.75%. Both companies collectively wiped out about $174 billion.

JUST IN: South Korea's KOSPI closed down 5.8%, wiping out around $235 BILLION from the market.

Samsung Electronics closed down 7.82%, while SK Hynix sank 9.75%, erasing roughly $174 BILLION. pic.twitter.com/hEEvYyZQe5

- Coin Bureau (@coinbureau) August 19, 2026