
Argentine corn futures absorbed the bearish move from Chicago with much less force, as the December 2026 CME contract closed at $174.2/t, down 1.1% intraday. The Rosario December 2026 contract closed at $187.5/t, up 0.2%.
The USDA cut Ukraine's 2026/27 corn exportable supply to 20.0 million tonnes from 22.0 million, while Ukraine's Black Sea logistics restrict exports.
With Ukraine's Black Sea exports constrained, Mercosur supplies are filling the gap, which supports Argentine and Brazilian corn prices relative to Chicago and keeps world corn export competition tight.
Not enough comparable past events yet for a historical read.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.