Key facts
- The KOSPI index gained 1.65% to close at 7,007.72 on Monday, September 21, 2026.
- Investor sentiment was buoyed by artificial intelligence and semiconductor stocks.
Seoul stocks rise 1.65% led by chipmakers; oil prices, Mideast tensions weigh
IN SHORT
Seoul stocks rose 1.65% on Monday, September 21, 2026, extending gains for a third day. The KOSPI index closed at 7,007.72, driven by optimism in AI and semiconductor shares. Concerns over elevated oil prices and Middle East tensions persisted.
Key Numbers
7,007.72KOSPI closing level on September 21, 2026
1.65%KOSPI gain on September 21, 2026
113.49KOSPI points gained on September 21, 2026
$100Brent crude price per barrel
Who's Involved
Kim Eun-jung
reported on Seoul stocks and market conditions
Johann M Cherian
reported on US stock indexes, Treasury yields, and crude prices
Pooja Desai
edited Reuters report on US markets
↳ Why This Matters
The performance of South Korean chipmakers significantly influences the KOSPI, and global macroeconomic factors like oil prices and geopolitical tensions can impact investor sentiment and corporate earnings across the region.