Kospi Rebounds 8.2% to 8,096 as Samsung and SK Hynix Reverse 1-Day Rout
Updated
Updated · Business Insider · Jun 9
Kospi Rebounds 8.2% to 8,096 as Samsung and SK Hynix Reverse 1-Day Rout
3 articles · Updated · Business Insider · Jun 9
Summary
8,096 was the Kospi's Tuesday close, up 8.2% and about 50 points above Monday's opening level after the index had plunged roughly 700 points, or 8%, a day earlier.
Friday's nearly 5% Nasdaq sell-off — led by semiconductor profit-taking — hit Seoul with a delay because South Korea's market was closed when the U.S. drop unfolded.
SK Hynix jumped 15% and Samsung rose 9% on Tuesday after losing more than 10% and about 8% respectively on Monday, underscoring how heavily the index swings with its two biggest tech stocks.
About half of the Kospi's market value sits in Samsung and SK Hynix, both now worth more than $1 trillion, tying the benchmark closely to U.S. AI names such as Nvidia and Google.
The whipsaw comes after the Kospi more than tripled since early 2025, powered by the AI rally and South Korean market reforms that drew investors back.
Is the Korean market's wild volatility the new normal, or a sign of a massive AI bubble about to burst?
With China's economic pressure mounting, how can South Korea's tech giants avoid becoming geopolitical pawns?
KOSPI’s 15% Drop in June 2026: AI Boom, Foreign Outflows, and What’s Next for Korea’s Market
Overview
On June 8, 2026, the KOSPI experienced a sharp decline, which immediately drew attention from the securities industry and analysts. Many experts viewed this drop as a short-term correction, while some saw it as a buying opportunity and others warned of ongoing volatility. Investor sentiment was shaken, especially due to increased volatility in AI-related semiconductor stocks. This uncertainty was heightened by upcoming U.S. inflation data, the Federal Reserve’s interest rate decision, and events like Quadruple Witching Day. The report highlights how these global and domestic factors combined to create a fragile market environment, leading to significant shifts in investor behavior.