Monday’s speculative surge is quickly losing momentum as a stronger dollar, harvest pressure and expanding South American supply weigh on grains, while Black Sea disruption and tighter wheat production estimates continue to limit the downside.
Global grain markets start Wednesday, September 23, broadly lower as traders unwind part of Monday’s trade-driven rally. Expectations surrounding this week’s US-China meeting remain an important demand catalyst, but the market is shifting back toward crop fundamentals, harvest progress and global supply, with the US dollar at a two-month high adding another headwind for agricultural commodities.
US-China Optimism Remains, but Monday’s Speculative Rally Is Fading
The sharp price surge at the start of the week was heavily driven by expectations that improved US-China trade relations could lead to additional Chinese purchases of US corn and soybeans. Those expectations remain alive, but grains are now giving back part of the speculative premium as traders wait for concrete demand confirmation. The Chinese leader’s US visit is scheduled for September 23–25, keeping the trade relationship firmly in focus for agricultural markets.
For soybeans, estimated Chinese purchases are already approaching 14 MMT, providing a stronger fundamental demand base than in corn. For corn, the potential for Chinese buying remains much more dependent on the outcome of this week’s discussions, leaving the market vulnerable if expectations are not converted into actual sales.
Midwest Weather Shifts From Harvest Pressure to Regional Delays
Most of the Midwest was dry on Tuesday, and the central region is expected to remain relatively dry into early next week, allowing harvest activity to continue. However, moderate to heavy rainfall is expected to develop across the Central Plains and western Corn Belt, with 1–4 inches possible across Minnesota, Iowa, the Dakotas, Nebraska, Kansas and parts of Missouri.
The result is a mixed weather influence for corn and soybeans. Drier central areas increase seasonal harvest pressure, while heavier western rainfall could slow fieldwork and temporarily restrict the flow of new-crop supplies. Above-normal precipitation across the central US in the second week of the outlook keeps weather risk active even as harvest advances.
Wheat Supply Estimates Turn More Supportive
Global wheat production signals have become somewhat tighter. Coceral now estimates combined EU and UK wheat production at 137.5 MMT, down 3.3 MMT from its previous estimate and 7.5% below last year. Argentina’s 2026/27 wheat crop is projected at 23.4 MMT, down sharply from 27.8 MMT in 2025/26.
These reductions provide underlying support to wheat even as futures remain under technical pressure. EU wheat exports also reached 6.3 MMT from July 1 through September 20, slightly ahead of 6.19 MMT a year earlier, suggesting that export demand has remained relatively resilient despite weaker futures.
Black Sea Disruption Keeps Geopolitical Risk in Wheat
Black Sea logistics remain an important counterweight to the broader decline. Russian and Ukrainian forces continue strikes affecting port infrastructure and cargo vessels, with Russia reporting additional attacks on logistics facilities in Odesa and a dry cargo vessel. Persistent disruption keeps physical export risk elevated even while futures move lower.
Ukraine has completed its wheat harvest at 25.3 MMT, up 11% year over year, while 2026/27 planting has reached 14.6%. Large harvested supplies therefore exist, but the ability to move grain efficiently remains a key issue, leaving Black Sea logistics supportive for international wheat values.
International Wheat Demand Provides an Additional Floor
Tender activity remains relevant to the wheat market. The lowest reported offer in Tunisia’s 125,000 MT wheat tender was $311.72/MT C&F, although no purchases had been reported at the time of the update. Tender demand, combined with lower European and Argentine crop estimates, offers fundamental support even as Chicago, Kansas City and Minneapolis wheat test important technical levels.
All three US wheat classes have challenged their respective 50-day moving-average support, making Wednesday’s price action technically important. A sustained break below these levels could encourage additional selling, while Black Sea headlines or confirmed international demand could quickly restore support.
Corn Faces a Difficult Demand-Supply Balance
Corn continues to trade inside the range established on the September 11 USDA report day, with first support identified at $5.23 1/4. Market hopes for Chinese buying remain, but the economic case has weakened as the gap between Dalian corn and US Gulf values has narrowed significantly. The premium is now around $70/ton, matching the 2025 low and the smallest since spring 2022.
US Gulf FOB offers have also risen relative to South American grain, potentially making Brazil and Argentina more attractive to non-Chinese buyers if China enters the US market. This creates a complicated demand outlook: Chinese buying could support Chicago, but higher US export values could shift other buyers toward South America.
European Corn Tightens While South America Expands
The international corn picture remains sharply divided. Coceral forecasts combined EU and UK corn production at only 48.6 MMT, down 4.1 MMT from its previous estimate and 14% below last year, providing support to European prices and import demand.
South America points in the opposite direction. Argentina’s 2026/27 corn crop is projected at 66 MMT, above last year’s record 64 MMT, while 11.1% of the crop has already been planted. Brazilian September corn exports are estimated at 5.97 MMT, up 28.25% from August but still 21.06% below last year. The combination of tighter European supply and larger South American production keeps global corn fundamentals mixed.
Soybeans Balance Chinese Demand Against Growing South American Supply
Soybeans remain supported by expectations that Chinese purchases are approaching 14 MMT, but reserve sales and South American supply are limiting the upside. Sinograin sold 338,674 MT from government stocks on Tuesday and has announced another auction of 514,000 MT for next Monday. These domestic sales can temporarily reduce the urgency for Chinese import purchases.
Brazil is expected to export around 8.0–8.02 MMT of soybeans in September, below earlier expectations of 8.3 MMT but still potentially a record for the month. Argentina’s 2026/27 soybean crop is projected at 53.6 MMT, up from 50.1 MMT last season. Strong Chinese demand therefore remains supportive for US soybeans, but expanding South American supply continues to limit the longer-term bullish case.
Stronger Dollar Adds Macro Pressure
The US dollar is moderately stronger and has reached a two-month high, creating another obstacle for US agricultural export competitiveness. US equities are mixed and little changed, keeping the broader risk environment relatively neutral.
Energy markets are firmer after recent volatility, with Nov ’26 WTI crude up $0.15/barrel at $90.65, RBOB up $0.07/gallon and heating oil unchanged. The rebound provides some cross-market support, particularly for soybean oil, but it has not been strong enough to offset the bearish influence from the firmer dollar and fading speculative momentum.
Wheat Futures
Wheat starts Wednesday lower across all three major US classes. Dec ’26 Chicago wheat is down $0.07 1/2 at $7.10/bu, Dec ’26 Kansas City wheat is down $0.08 3/4 at $7.72 1/2/bu, while Dec ’26 Minneapolis wheat is down $0.04 1/2 at $7.32/bu. All three markets are challenging their 50-day moving averages. Smaller EU/UK and Argentine crop estimates and continued Black Sea attacks provide support, but the fading speculative rally and stronger dollar are keeping futures under pressure early in the session.
Corn Futures
Dec ’26 corn is down $0.06 1/4 at $5.30 1/2/bu, remaining within the September 11 trading range, with initial support at $5.23 1/4. Expectations for Chinese demand remain the main upside catalyst, while rising US Gulf FOB values, a larger 66 MMT Argentine crop outlook and continuing harvest pressure limit gains. The sharply smaller EU/UK corn crop provides international support but has not yet been enough to reverse early Chicago weakness.
Soybean Futures
Soybeans are also weaker, with Nov ’26 beans down $0.08 1/2 at $13.17/bu. Oct ’26 soybean meal is down $0.50 at $368.40, while Oct ’26 soybean oil is down 31 points at 67.06, and crush margins have recovered $0.03 1/2 to $2.40 1/2/bu. Chinese purchases approaching 14 MMT continue to underpin the market, but Sinograin reserve auctions, strong Brazilian September exports, larger Argentine production expectations and the stronger US dollar are limiting the upside.