US business inventories rose 0.4% in August, matching expectations of a +0.4% increase and decelerating from the prior month's +0.8% gain. Retail inventories excluding autos were reported against a prior increase of +0.8%.

Formally known as the Manufacturing and Trade Inventories and Sales release, the report is published monthly by the US Census Bureau roughly six weeks after the reference month ends. It combines inventory and sales data from three sectors — manufacturers, wholesalers and retailers — which together cover the bulk of goods held in the US economy.

By the time of release, much of the data is already public. Manufacturing inventories appear earlier in the factory orders report, and advance estimates for wholesale and retail inventories arrive in the Advance Economic Indicators release about four weeks after month end. The business inventories report completes the picture with final retail figures — numbers that can revise those earlier estimates — and the combined total, which is why it rarely moves markets.

The key figures are the monthly change in total inventories and the inventory-to-sales ratio, which measures how many months it would take to sell existing stock at the current pace of sales. A rising ratio can signal weakening demand or deliberate stockpiling, while a falling ratio suggests lean shelves and a potential need to restock.

The report's main value is for GDP tracking. Changes in private inventories are among the most volatile components of quarterly growth and can swing the headline number by a percentage point or more. Economists use the monthly data, particularly retail inventories excluding autos, to refine GDP estimates, and August's slowdown from July's pace will be folded into those third-quarter calculations. The figures are in nominal dollars, so stretches of rapid goods inflation can lift inventory values with no change in physical stock.

Inventory swings have taken on added importance in recent years as companies front-ran tariffs, rebuilt supply chains and adjusted to shifting trade policy, creating sharp distortions in quarterly GDP figures. With the August data now final, attention turns to the September release, due roughly six weeks after that month ends, which will supply the last monthly inventory reading of the third quarter and feed into subsequent GDP estimates.

Source: Investinglive