Grain Markets: Basis and Spreads Reveal Underlying Conditions

The grain markets are challenging to navigate due to the numerous indicators available for decision-making. At DTN, the primary goal of their Six Factors strategies is to simplify market drivers into manageable tools for timely and confident marketing decisions. One factor monitored is the Commercial Outlook, which includes grain basis and futures spreads, two significant components often overlooked as clear indicators of a market's underlying conditions.

While headline algorithms and outside influences may drive price direction and mask the fundamental supply and demand situation, basis and spread action will capture true market dynamics experienced in local cash markets. The national average corn basis has ranked consistently among the weakest of the past decade during the 2026 rally from $4 to $4.87 1/2.

The difference between July and December 2026 corn futures contracts hit its narrowest point of the year during January, steadily building carry into the market since. Both indicators suggest plenty of corn supply relative to demand, implying the corn rally had an impending expiration date long before it topped out in early May.