NEW YORK — Stocks opened mixed Monday as wary investors tried to reconcile positive economic news with fears of a second half earnings slowdown.

In the first hour of trading on Wall Street, the Dow Jones industrial average was up 13.92 at 11,041.72.

Stock rose on Friday on an inflation report that showed that wholesale prices remained virtually the same in July after a huge jump in June caused by soaring energy costs.

The Labor Department said its producer price index, which measures inflation pressures before they reach the consumer, was flat in July, a significant easing of price pressures following a hefty 0.6 percent surge in June.