Core US Inflation Surprises with Faster-than-Expected Rise in August

The Bureau of Labor Statistics recently released its latest update on US inflation, which showed that core prices rose faster than expected in August. Consumer prices increased by 0.4% in August compared to July's 0.1%, keeping headline inflation at 3.4% over the past year. However, the bigger surprise was the rise of 'core' inflation, which excludes food and energy costs.

Core inflation rose 0.3% on the month, exceeding economists' forecast of a 0.2% increase, even though the year-over-year core rate cooled to 2.4% from 2.5%. This uptick in core prices was driven by various factors, including energy costs and housing expenses. Notably, prices excluding food, energy, and shelter still rose 0.3% for a second consecutive month.

This development is significant because the Federal Reserve looks for convincing signs that inflation is cooling down sustainably. The increase in core prices suggests that underlying inflation may be running closer to a mid-3% annual pace than initially thought. As a result, traders are pushing expected rate cuts further out or pricing fewer of them, which can impact short-term US Treasuries and the stock market.