The dollar showed volatility on Friday following the release of US consumer price data for August, which indicated a higher-than-anticipated increase in core inflation. This data prompted traders to raise their expectations for a Federal Reserve interest rate hike scheduled for the following week.

Specifically, the Bloomberg Dollar Spot Index initially surged by as much as 0.2%, reaching a one-week high, after core monthly inflation data for August rose by 0.3%, exceeding the forecasted 0.2%. This upward movement in the dollar, however, was short-lived.

The gains in the dollar quickly faded as a decline in oil prices began to exert downward pressure on the greenback. This indicates a mixed market reaction where inflation concerns are pushing for a stronger dollar and rate hikes, while falling commodity prices are creating opposing forces.