Final demand less foods, energy, and trade services is a core Producer Price Index (PPI) grouping (table code FD 49116). It tracks the monthly change in selling prices received by domestic producers for final demand. It drops foods, energy and trade services (retail and wholesale margins, not cross-border trade), the most volatile parts. It spans goods, services and construction sold for consumption, investment, government use and export.
A positive reading means prices rose and a negative one means they fell, with no set threshold. The program began in 1902 as the Wholesale Price Index, and final-demand aggregation became its primary aggregation with the January 2014 release.