U.S. Wholesale Sales Jump 2.8% in September as Inventories Rise 0.7%

U.S. wholesale sales rose 2.8% in September to about $840.1 billion, outpacing a 0.7% increase in inventories with the dollar value of sales growing faster than the value of merchandise held in stock. The latest figures, released Monday by the Commerce Department’s Census Bureau, put the value of merchandise held by wholesalers at roughly $1.013 trillion at the end of the month.

The sales increase followed a 2.0% gain in August. Inventories, meanwhile, rose 0.7% after increasing 0.6% the previous month, and were 7.6% higher than a year earlier. September’s inventory growth was revised upward from the 0.6% advance estimate published in late October.

The inventories-to-sales ratio fell to 1.21 in September from 1.23 in August and 1.34 a year earlier. The measure compares the value of goods on hand with monthly sales, and its decline indicates that wholesalers held less inventory relative to the pace at which they were selling goods. The Census Bureau’s Monthly Wholesale Trade program covers merchant wholesalers across the United States, excluding manufacturers’ sales branches and offices.

Sales grew faster than merchandise on hand

September’s difference between sales and inventory growth is the most useful way to read the headline figures. A monthly increase in stock is not necessarily a warning of unsold goods when sales are growing even faster. In this case, the inventory-to-sales ratio moved down rather than up, extending the gap with its level a year earlier.

At a ratio of 1.21, the value of wholesalers’ end-of-month inventories was equivalent to about 1.21 months of September sales. That is a snapshot, not a prediction that warehouses would be empty after that period. Sales can change from month to month, businesses continue to receive goods, and different types of merchandise turn over at very different rates.

The stronger sales reading also needs a qualification. Wholesale sales are measured in dollars, not in the number of items sold. The estimates are adjusted for normal seasonal patterns and differences in trading days, but not for price changes. A rise in the dollar value of sales can therefore reflect higher prices as well as larger quantities. That distinction is particularly important for wholesalers dealing in fuel and other commodities.

The figures describe activity between producers and businesses such as retailers and other distributors, rather than purchases made directly by households. They provide evidence about the movement of goods through the supply chain but cannot, on their own, establish how much final consumer demand grew or how much of the monthly gain represented inflation.

Petroleum and electrical goods stand out in inventories

Stock increases were uneven across wholesale categories. Inventories of durable goods, which include equipment and other longer-lasting products, advanced 0.6% in September. Within that group, electrical goods inventories rose 2.5%, while hardware inventories increased 1.3%, according to the reported category figures.

The gains in electrical equipment and hardware are relevant to a period of heavy business spending on computing infrastructure. They do not prove that artificial-intelligence projects caused the entire increase in either category, however. Wholesale classifications cover a wide range of customers and uses, and the inventory release does not identify the end buyer for each product.

Petroleum wholesalers recorded a much larger 10.6% increase in the value of inventories. That movement is worth separating from the overall 0.7% rise because energy-related stocks can be affected by both the quantity of products on hand and changes in market prices. The nominal inventory measure does not distinguish those influences by itself.

A national figure can obscure such differences. Wholesalers of fast-moving goods may operate with relatively little inventory compared with monthly sales, while equipment distributors can carry products for longer periods. A change in the overall inventory-to-sales ratio is useful for tracking the sector, but it does not mean every category has the same supply conditions or ordering patterns.

Revised data add context to the GDP picture

The September report also follows a broader revision of wholesale trade estimates released by the Census Bureau on October 26. The agency incorporated information from its Annual Integrated Economic Survey and historical corrections, revising both unadjusted estimates and seasonally adjusted series. As a result, dollar levels in older releases should not automatically be compared with the newly revised figures as though they were from an unchanged statistical series.

The advance September inventory estimate, published October 28, had shown a 0.6% monthly increase and an end-of-month stock level of $1,011.5 billion. The subsequent 0.7% reading is a modest upward adjustment, rather than a separate additional month of inventory growth. Understanding that sequence matters when comparing preliminary data with the fuller monthly wholesale report.

Inventory investment also featured in the broader economic picture for the July-to-September quarter. In its advance third-quarter GDP release, the Bureau of Economic Analysis said real U.S. output grew at a 3.4% annualized rate, up from 2.2% in the second quarter. The agency identified private inventory investment as a major source of the increase in business investment, with wholesale trade and manufacturing among its largest contributors.

The BEA also reported that real final sales to private domestic purchasers, a measure covering consumer spending and private fixed investment, increased at a 4.9% annualized rate in the third quarter. That offers a separate reading on domestic demand, which is useful because an increase in inventory investment can lift GDP even when it does not reflect goods being sold to end users in the same period.

The monthly wholesale figures and the quarterly GDP estimate are related but not interchangeable. The Census Bureau reports the value of inventories held at the end of a month, while the BEA measures changes in inventory investment within national accounts that account for prices and other adjustments. September’s 0.7% nominal inventory rise should not be treated as a direct contribution of 0.7 percentage points to GDP growth.

The next scheduled check on wholesale activity is the Census Bureau’s October report, due December 9. Before then, the BEA is scheduled to publish its second estimate of third-quarter GDP on November 25, when later source data may change the picture of inventory investment and overall growth.