The dollar index stood at 101.15 early Monday and was on track for a 1.7% gain in September, which would represent its strongest monthly performance since June. The euro and sterling both weakened 0.1%, trading around $1.1379 and $1.3232 respectively.
The currency’s strength comes as energy-market disruptions add another source of inflation uncertainty. Brent crude moved above $106 a barrel after renewed uncertainty over US-Iran negotiations and the future of the Strait of Hormuz.
Higher energy costs complicate the outlook for central banks because fuel prices can feed into transportation, production, and consumer prices. For the Federal Reserve, the possibility of persistent inflation alongside resilient economic activity has encouraged investors to reassess the timing and extent of future rate changes.
US Treasury yields have also moved sharply higher. The 30-year Treasury yield approached its highest level since 2004, while shorter-dated yields have risen substantially during September as markets increased expectations for further Federal Reserve tightening.
The dollar’s performance is closely linked to these changes because higher US yields can increase the relative attractiveness of dollar-denominated assets. At the same time, expectations of stronger US economic activity have supported demand for the currency.
The effect is being felt across international markets. A stronger dollar can increase the cost of dollar-denominated commodities and debt for companies and governments outside the United States, particularly in emerging markets with significant external financing requirements.
For multinational businesses, currency movements are also becoming an important consideration in earnings, investment planning and international pricing decisions. Companies with substantial overseas revenues may face translation effects if the dollar remains strong.
Markets will now turn to US inflation, employment, manufacturing and economic-growth indicators for further evidence on the Federal Reserve’s policy direction. Any indication that inflation remains persistent could reinforce current expectations, while weaker economic data could moderate pressure on rates.
The dollar’s next phase will therefore depend on the balance between US economic resilience, energy-driven inflation and the Federal Reserve’s response to changing financial conditions.
