Wholesale inventories increased by 0.4 percent to $475.5 billion in January , new data out of the Census Bureau shows.
Economists polled by Bloomberg had predicted a 0.6 percent jump during the month.
"Inventories of machinery, equipment, and supplies were up 1.2 percent from last month and inventories of metals and minerals, except petroleum were up 0.9 percent," the Census said.
December results were also revised 10 basis points higher, to 1.1 percent.
On the sales sides, wholesale sales slid 0.1 percent lower to $413.1 billion month-on-month, but stood 7.9 percent higher than year-ago levels.
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