A millennial shopper at the express checkout at 365 by Whole Foods Market.

U.S. producer prices were unchanged in July for the first time in seven months as a modest increase in the cost of goods was offset by a drop in services, but underlying producer inflation continued to push higher.

The Labor Department said on Thursday the unchanged reading in its producer price index for final demand followed a 0.3 percent increase in June. In the 12 months through July, the PPI advanced 3.3 percent, slowing after June's 3.4 percent increase.