I wasn't familiar with it either. Here's a good reuters article on it: https://www.reuters.com/business/us-producer-prices-rise-fur...

> US producer prices rose moderately in October, but inflation at the factory gate posted its largest annual gain in four years, supporting the view that the Federal Reserve could continue raising interest rates after next month's widely expected increase.

> Despite the better-than-expected monthly reading reported by the Labor Department on Friday, there were more signs of inflation broadening out beyond energy goods, with food prices increasing by the most in eight months as expensive diesel raised transportation costs. Prices of goods excluding food and energy logged their biggest gain since May.

> U.S. producer prices rose 6.5% YoY in October,

First sentence of the submission btw.

Google is free

https://en.wikipedia.org/wiki/Producer_price_index?wprov=sft...