[Korea Market] Sep 15 Close: KOSPI Stabilizes at 6,627 as KOSDAQ Rebounds
Date: September 15, 2026 (Market Close)
🤖 30-Second AI Briefing & FAQ Snippet
Q. How did the Korean stock market perform on September 15, 2026?
A. Ahead of the U.S. FOMC meeting, the benchmark KOSPI recovered from early steep drops to finish down 0.85% at 6,627.26, aided by Nvidia CEO Jensen Huang's remarks brushing aside AI bubble concerns. The junior KOSDAQ rebounded 0.70% to 812.41.
Q. What were the standout equity movers and currency trends?
A. The USD/KRW edged up modestly to 1,348.50. Medical software provider Infinite Healthcare (+30.00%) locked the upper circuit limit after announcing a massive KRW 65.4 billion cash dividend, YTN (+30.00%) surged on audit review news, and HeungKoo Oil rallied on elevated crude prices.
1. Market Indices & FX Rates Overview
| Index / FX | Close | Change | % Change | Intraday Highlight |
|---|---|---|---|---|
| KOSPI | 6,627.26 | ▼ 57.11 | -0.85% | Recovers from early morning slump |
| KOSDAQ | 812.41 | ▲ 5.62 | +0.70% | Rebounds past 812 on tech buying |
| USD/KRW | 1,348.50 | ▲ 1.20 | +0.09% | Controlled movement ahead of FOMC |
| JPY/KRW (100 JPY) | 879.10 | ▼ 0.42 | -0.05% | Steady in upper 870s |
💰 Investor Flow: Foreign and institutional investors maintained cautious net selling in KOSPI ahead of the FOMC statement, but aggressive domestic retail and corporate bottom-fishing over 1 trillion won provided solid market support. KOSDAQ saw net buying by foreign and institutional accounts.
2. Top Movers & Fundamental Drivers
[Catalyst] Announced an unprecedented KRW 65.4 billion cash dividend payout (KRW 2,800 per share), driving massive buying demand straight to the daily ceiling.
[Catalyst] The Board of Audit and Inspection released findings pointing to procedural irregularities by media regulators during its past privatization, spurring corporate restructuring speculation.
[Catalyst] WTI crude maintaining levels above $102/bbl sustained strong momentum across domestic fuel distribution and energy plays.
[Catalyst] After sharp opening losses, positive rhetoric from Big Tech leadership emphasizing that AI infrastructure demand remains in its infancy helped curb downside pressures.
3. Market Intelligence: Official Facts vs Rumors
- FOMC Meeting Commences: U.S. Federal Reserve convenes its two-day rate-setting session on Sep 15–16.
- Nvidia CEO Statement: Jensen Huang publicly rejected AI bubble and CAPEX slowdown fears, asserting ongoing multi-year AI infrastructure expansion.
- Infinite Healthcare Dividend: Regulatory filing confirmed an aggregate cash dividend of KRW 65.4 billion.
- Board of Audit YTN Review: Released official audit concluding procedural faults in broadcasting commission actions during the YTN privatization.
- Saudi Drone Strike Claims: Viral rumors asserting a fresh drone attack on Saudi Aramco crude facilities circulated to push oil past $105; verified to be unsubstantiated.
- CHIPS Act Grant Cut Rumors: Claims that the U.S. Congress was reviewing reductions in semiconductor grant funding for Asian chipmakers were refuted by trade officials.
4. Global Macro Landscape & Outlook
- Federal Reserve FOMC Spotlight: Financial markets worldwide are paused ahead of Fed Chair Jerome Powell's press conference and the updated Summary of Economic Projections.
- Persistent High Energy Costs: Elevated crude holding above $102 keeps baseline cost-push inflation in focus across global manufacturing centers.
- Controlled FX Fluctuations: USD/KRW holding stable around 1,348 signals solid underlying trade health absorbing external shocks without currency disruption.
💡 Next Session Watchlist
- Wall Street Pre-FOMC Trading: Monitor U.S. Treasury yield reactions and mega-cap tech performance during the opening day of the FOMC meeting.
- Consolidating KOSPI 6,650: Track whether domestic semiconductor blue chips continue to build a technical base to anchor broader market recovery.