Friday, September 18, 2026

Today’s Key Insight

The Federal Reserve’s first interest rate hike in three years has intensified pressure on the Bank of Korea to tighten policy amid rising domestic producer prices. Despite the hawkish Fed move, US equity markets rallied in the prior session as of September 17, suggesting that the resolution of monetary policy uncertainty provided temporary relief to investors.

Market Overview

Korea. In the prior session on September 17, the KOSPI closed nearly flat at 6,715.41 (-0.04%) while the KOSDAQ rose 0.76% to 822.18. The Korean market faces mounting headwinds as August producer prices rebounded due to agricultural and oil price increases, while the USD/KRW rate climbed 0.96% to 1,376.60 in the prior session.

US. US markets posted solid gains in the prior session on September 17, with the Nasdaq rising 1.69% and the S&P 500 gaining 1.14% despite the Fed’s rate hike. The rally was supported by a 12.82% drop in the VIX to 15.44 and a slight decline in the 10-year Treasury yield to 4.95%, indicating that the rate hike was largely anticipated.

Cross-Market Signals

• Monetary Policy Divergence and FX Pressure: The Fed’s rate hike, coupled with rising Korean producer prices, puts significant pressure on the Bank of Korea to raise rates to support the weakening Won, which stood at 1,376.60 in the prior session.
• Relief Rally Amid Policy Certainty: The sharp decline in the VIX and the rise in US equities during the prior session suggest that investors welcomed the removal of interest rate uncertainty, even though the Fed signaled further tightening.