The producer price index for July suggests companies may be feeling the sting of inflation and consumers could be next.

The stock market’s rally stalled on Thursday after new data showed factory-gate inflation picking up, introducing fresh question marks over the outlook for interest rates. Major indexes finished mixed and near the flatline after investors bought the shares of big technology and financial companies and sold smaller stocks that had surged earlier in the week.

Wholesale inflation picked up more than expected last month, indicating that mounting pressure on input costs will likely translate into higher consumer prices before long.