Nick Timiraos, known as the "Fed Whisperer," has projected a 0.37% month-over-month increase in U.S. December PCE inflation, according to CNBC. This rise, annualized at 4.5%, would elevate the annual core PCE index to 3%, marking its highest point since February 2025. Additionally, the overall PCE rate is anticipated to reach 2.9%, the highest since March 2024.