Corn prices on the São Paulo Commodities Exchange (B3) increased by up to 3.8% as exporters raised premiums at ports, signaling the last shipments of the year. However, the National Association of Cereal Exporters revised its corn export forecast downwards, resulting in higher future prices. In Chicago, corn prices declined for the fourth consecutive day due to a record harvest and limited demand for American grain, with the volume of corn inspected for export decreasing by 32.5% in the week.