Inventories were up 9.4 percent from January 2011, the department said, while the December estimate was revised upward by 0.1 percent or $500 million.
Wholesale sales for January were down 0.1 percent from December to $413.1 billion, a jump of 7.9 percent from January 2011.
The inventory-to-sales ratio -- reflecting how many months it would take a company to deplete its inventory at the current sales pace -- came in at 1.15, slightly higher than the ratio a year earlier, which stood at 1.14.
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