
Wheat started the week higher as Black Sea shipping risk and the Saudi tender result supported prices, while corn remained broadly unchanged. Saudi Arabia’s GFSA purchased 683k tonnes of wheat for November and December arrival at an average $339.24/t C&F, 148k tonnes above the original tender volume and around $70/t above its July purchase. Russia announced plans to begin state grain purchases by late October as export constraints continued to weigh on domestic prices. US corn inspections reached 1.37 mmt, while wheat inspections remained weak at 302k tonnes. Wet Midwest weather also slowed the US corn harvest to 23% completion, below the 27% five-year average, while corn conditions fell 3 pp to 54% good to excellent.
Wheat recorded a fourth consecutive higher close as Black Sea shipping risks escalated, while corn rallied following a sharp deterioration in US crop conditions. Two merchant vessels were struck by drones in Bulgaria’s Black Sea economic zone, including one carrying grain, extending shipping concerns into Bulgarian and Romanian waters. A separate tanker attack off Russia’s coast added to regional freight and insurance risks. EU soft wheat exports reached 7.52 mmt by October 4, although internal line-ups indicated volumes closer to 9 mmt. Jordan made no purchase in its 120k-tonne wheat tender, while the US corn harvest remained at 23% and Iowa was only 7% complete compared with 20% normally.
Grain markets moved lower as wheat gave back much of the previous session’s rally and corn eased as US harvesting accelerated. Argentina’s wheat conditions improved, with Good/Excellent ratings rising 8 pp, while the country’s 2025/26 corn harvest was confirmed at a record 64 mmt. SovEcon reduced its Russian wheat production forecast to 87.5 mmt from 88.2 mmt amid dry southern soils and slow winter planting. Asian feed demand remained active, with Philippine buyers tendering for up to 377k tonnes of feed wheat and 110k tonnes of corn, while Thai buyers sought at least 60k tonnes of feed wheat. Ahead of the , traders expected US corn yield to decline to around 177.7 bu/acre.




Grains remained mostly lower ahead of the USDA WASDE, with harvest pressure weighing on corn and soybeans. Lithuania proposed an EU-wide ban on Russian grain transit through European ports, following Estonia’s existing restrictions and similar calls from Latvia. Ukraine also explored using German ports, which could potentially provide around 1 mmt per month of additional export capacity, although transport and infrastructure constraints remained unresolved. Ukrainian grain exports reached just 217k tonnes during the first seven days of October. US wheat export sales improved to 452k tonnes, the strongest in 15 weeks, although total commitments remained 32% below last year. NOAA also reported a strengthening El Niño, with an 83% probability of historically extreme conditions during October–December.
Corn fell sharply after the OctoberUSDA WASDE delivered a major bearish surprise. USDA raised US corn yield to 181.2 bu/acre from 178.5 and lifted production to 16.034 bln bushels, around 300 mln bushels above the average trade estimate. US 2026/27 ending stocks increased to 1.849 bln bushels. Wheat changes were smaller, with US ending stocks raised to 740 mln bushels while Russian exports were cut by 3 mmt to 40 mmt. Algeria responded to lower prices by announcing a large wheat tender for December shipment. Managed money had already reduced its corn net long to around 317k contracts before the WASDE-driven sell-off.