Corn's unchanged, wheat's holding on to slight gains and soybeans are slightly lower in early trading Thursday.

Shortly after the open, March corn traded unchanged at $6.42 1/2 per bushel while March wheat was 1/2 cent higher at $6.51 3/4 and January soybeans were 1 1/4 cents lower at $11.97, according to Barchart.com.

The mixed prices reflect something of a return to other typical market factors and away from the laser-sharp focus on the La Nina crop-stressing weather conditions in South America. So far Thursday, profit-taking's very much in the picture, but the U.S. Dollar's trading slightly higher, a bearish factor for the grains.

On top of these factors, weekly export sales numbers have been delayed until Friday on account of the Christmas holiday earlier this week. Those numbers are expected to be slightly bullish to the grains.

• Talk: Discuss today's trade in Floor Talk
  
• Read more: Soybeans seen lower on strong Dollar, profit-taking
• Also: Corn still underpinned by S.A. weather
• See the latest grain & livestock futures prices