( HINT: Click-and-drag left-to-right on a chart to zoom in to a specific date range. Double-click on a chart to zoom back out. )
Producer Price Index (PPI) Inflation ChartThis chart shows the year-over-year change in the Producer Price Index (PPI), in relation to the S&P 500. Shown are values for the "headline" PPI and the "core" PPI (excluding food and energy costs), as well as the "headline" Consumer Price Index (CPI). PPI measures inflation at the manufacturer level, and is driven primarily by commodity, material, transportation, and wage prices.
Rising manufacturing costs can cut into corporate profits, and reduce consumer spending in real terms, so is important to measure in stock market timing studies.