Grains: Wheat, Corn and Soybeans Daily — 2026-09-04
CBOT grain markets are experiencing a sharp correction as traders take profits from three-year highs, with wheat leading the decline overnight. Despite the pullback, structural support remains firm due to severe Black Sea export disruptions and extreme heat forecasts in the US Midwest. Brazilian exporters are capitalizing on the volatility, with soybean prices hovering near $13/bushel and corn export volumes rising through July.
Grains: Wheat, Corn and Soybeans Daily — 2026-09-04
Top developments
Profit-taking pulls grains off three-year highs
Wheat futures led the grain complex lower on September 4th, while corn and soybeans saw profit-taking pullbacks after reaching their highest levels in over three years earlier in the week. This correction follows a "rip-roaring" bull market where corn and wheat prices surged due to distinct supply-side constraints, including weather issues in the US and geopolitical risks in the Black Sea. For CBOT settlements, this marks a shift from aggressive buying to consolidation ahead of the USDA September crop report, with producers monitoring if demand can sustain these elevated price levels.
Black Sea export infrastructure under fire
Russian attacks on Ukrainian Black Sea export infrastructure have caused wheat prices to rise approximately 9% since the start of August, contributing to the recent multi-year highs. Ukrainian drone strikes have also impacted Russian ports on the Azov and Black Seas, effectively halting significant portions of wheat and other grain shipments. This disruption has created a global supply squeeze, forcing buyers to look toward alternative origins like Brazil and the US, thereby supporting global grain prices despite the recent technical correction.
Soybeans break $13 amid Chinese buying and heat
November soybean futures briefly crossed above $13.00 per bushel on September 1st, reaching $13.12¾, driven by declining crop conditions in the US and strong export inspections. Inspections of corn for offshore delivery have risen week-over-week, signaling robust international demand. The rally is further supported by expectations that China is clearing reserves to make room for incoming US cargoes, with Kpler projecting China could take 25 million tonnes of US soybeans.
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Extreme heat threatens US Midwest yields
Weather models are forecasting extremely hot conditions stretching from Kansas to Ohio, raising concerns about yield losses in late-season corn and soybean crops. Producers are reporting heavy rain in some areas leading to nitrogen loss, while others face drought stress, creating a mixed but generally bullish weather premium. This weather uncertainty is a key driver for the upcoming USDA WASDE report, where any downward revision in yields could trigger further price spikes.
Local view
Brazil: Export growth and feed cost pressures Brazilian media highlights that corn and soybean exports continued to grow through July 2026, with the "Arco Norte" (Northern Arc) ports leading the volume. However, local stakeholders in the poultry and swine sectors are expressing concern as Chicago soybean prices above $13.00 are squeezing margins and increasing feed costs. Agrimidia notes that the appreciation of the soybean complex coincides with a more appreciated real exchange rate, which dampens domestic competitiveness even as global prices rise.
Argentina: Agro-dollar inflows surge Argentine outlets report that the agricultural sector liquidated USD 2.75 billion in August, driven by a strong corn harvest and better commercialization rhythms. El Cronista describes the current scenario as an opportunity for Argentina, noting that soybean prices have reached their highest level in the "Milei era," surpassing $480/tonne. Local analysts suggest that the combination of Black Sea tensions and US weather problems is creating a "rain of dollars" expected to exceed $13 billion by year-end.
Context & numbers
- CBOT Closes (Aug 28): Sep. Corn closed at $5.12 (up 1.75¢); Sep. Soybeans at $12.76¼ (up 19.75¢); Sep. Chicago Wheat at $7.67 (up 24.25¢).
- Soybean Highs: November soybeans touched $13.12¾ on Sept 1, marking a significant psychological break above the $13 level.
- Argentine Liquidation: The agro-complex generated USD 2.75 billion in foreign currency inflows in August 2026, a 33% year-on-year increase.
- Chinese Demand: Kpler estimates potential US soybean purchases by China at 25 million tonnes under current trade relations, aided by reserve auctions clearing space for imports.
On the radar
- USDA September Crop Report: Scheduled for release soon, this report will be critical for updating yield estimates amid the recent heatwave in the Midwest.
- Black Sea Stability: Continued attacks on port infrastructure remain a primary risk factor for wheat supplies; any escalation could reverse the current profit-taking trend.
- El Niño Development: Kpler reports a building El Niño pattern, which could impact South American planting seasons later in the year, adding long-term volatility to the corn and soybean complexes.
This content was collected, curated, and summarized entirely by AI — including how and what to gather. It may contain inaccuracies. Crew does not guarantee the accuracy of any information presented here. Always verify facts on your own before acting on them. Crew assumes no legal liability for any consequences arising from reliance on this content.
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