Corn futures ended the Friday session modestly lower, with December contracts slipping after USDA data pointed to a lower-than-expected yield. The fall in futures followed a week in which the contract slid for a second time, while cash values moved down alongside the front end of the market.
Key takeaways
- Price move: Corn futures closed slightly lower across key maturities, with December down on the session and for the week.
- Catalyst: The USDA monthly Crop Production report showed the national corn yield falling to 178.5 bushels per acre.
- Additional support for the downside: USDA adjustments via WASDE reduced new-crop carryout and lowered feed and residual usage estimates.
- Implication for markets: Large fund positioning remains elevated, but CFTC data showed managed money trimming back its net long.
What drove the move
Contract prices eased as traders digested the USDA’s monthly Crop Production report from the National Agricultural Statistics Service. The report lowered the U.S. corn yield by 2.2 bushels per acre to 178.5 bushels per acre, a figure described as in line with trade expectations.
USDA also reduced overall production versus the prior August estimate, attributing the change to trimmed harvested acreage. Harvested acres were reported down by 87,000 to 85.506 million acres, which translated into production falling by 213 million bushels to 15.8 billion bushels.
Further commodity supply-and-demand context came through USDA’s WASDE adjustments. Old-crop ending stocks were cut by 23 million bushels to 1.922 billion bushels, as the World Agricultural Outlook Board raised exports by 25 million bushels and increased imports by 2 million bushels. For the new-crop balance sheet, USDA reduced carryout by 86 million bushels to 1.567 billion bushels after incorporating the production and carryover revisions, and feed and residual were also lowered by 150 million bushels.
On the global side, the WASDE-linked updates showed world ending stocks for 2025/26 rising by 2.55 million metric tons to 301.38 MMT, driven by a reported increase in Brazilian old-crop production of 1 MMT to 141 MMT. New-crop world carryout, however, was reduced by 2.55 MMT to 272.10 MMT.
Market reaction and positioning
Alongside the USDA reports, export activity and trader positioning were also in focus.
According to USDA, a private export sale of 264,000 metric tons was reported for Mexico for 2026/27 shipment. In addition, export sales data for the week covering 9/3 indicated total 2025/26 sales of 79,788 MT to round out the marketing year. For the new crop in the week ending September 3, sales were tallied at 1.929 MMT, including 993,349 MT in unshipped sales carried over from 2025/26.
The CFTC’s weekly commitments of traders update showed managed money trimming back 5,891 contracts from its previously record net long in corn futures and options. While reduced, the net long remained very large at 425,171 contracts as of September 3, suggesting that futures prices could remain sensitive to further fund adjustments.
Where prices closed
- Nearby cash: Cash corn averaged 4.84 3/4, down 3 1/4 cents.
- September 26 corn: Closed at 5.10 1/4, down 3 3/4 cents.
- December 26 corn: Closed at 5.30 1/4, down 3 1/2 cents.
- March 27 corn: Closed at 5.45 1/2, down 3 3/4 cents.
Bigger picture
Although the USDA data pointed to a lower yield—typically supportive for futures—prices still finished lower, reflecting how traders weighed yield reductions against broader supply-demand recalibrations, including changes to stock levels and feed/residual usage. With managed money still holding a substantial net long, the market may stay reactive to incremental balance-sheet updates and export flows.
Looking ahead, investors will likely monitor continued export sales reporting, any follow-up USDA supply-and-demand revisions in upcoming WASDE cycles, and the next round of weekly CFTC positioning. Additional attention will also fall on market developments around the U.S. growing season and global production trends, which can shift expectations for the size of the balance-sheet surplus or deficit.
