Wholesale prices rose less than expected in December, a positive sign for the economy amid recent market fears that inflation isn't falling as quickly as hoped to the Federal Reserve's 2% target.

Wholesale prices rose a seasonally adjusted 0.2% in December, half of what Wall Street forecasters believe would jump while the rate for the core producer price index over the same period remained flat,

U.S. PPI rose 0.2% in December, below forecasts, signaling easing wholesale inflation pressures. Core PPI was flat, raising optimism about cooling costs.