The Chicago Stock Exchange's December 27 session saw an increase in corn, oats, and soybean futures prices, while wheat prices fell by 0.6 euros per ton for both the March and May contracts. Corn prices rose by three euros for March batches and 3.2 euros for May batches. Oats experienced the highest price increase of the week, with future prices rising by 5 and 4.3 euros for March and May contracts, respectively. Soybean prices also increased, with the January contracts priced at 511.52 euros and the March contracts at 513.85 euros.