State Street PriceStats: Inflation rebounds -->

US inflation is reaccelerating, but the September rebound remains concentrated in energy and transportation rather than spreading broadly into core goods.

• The State Street PriceStats index rose 0.6% in September 2026, the largest monthly increase since May, lifting annual inflation by 0.3 percentage points to 4.8%.
• Energy and transportation prices increased nearly 2.3% during the month, while gasoline and diesel reached record September highs.
• Food, health and beauty prices followed seasonal patterns, apparel began its usual autumn rebound, and household equipment and electronics were the only other notably strong categories.
• PriceStats collects daily prices from more than 1,500 retailers across over 40 million products and publishes proprietary inflation estimates with a three-day lag.
• The index includes over 500,000 daily prices, compared with the Bureau of Labor Statistics' 80,000 monthly prices, and covers more than 27 countries and multiple sectors.

Takeaway: The second consecutive monthly acceleration could strengthen pressure for another Fed tightening, although limited spillover beyond energy currently makes the core-inflation picture more reassuring; persistently high diesel prices remain a risk.