Key Highlights

● Corn fell 0.34% to 449.70 US cents a bushel in Friday's session.

● USDA projects record 2026/27 US corn production of 16.03 billion bushels.

● US corn export commitments are down 34% from a year earlier.

● Ethanol output rose to 329 million gallons, 2.5% above a year earlier.

Corn fell 0.34% to 449.70 US cents a bushel in Friday's session on 30 October, extending a slide that has taken it to its lowest level since August. The move matters to ADM (NYSE:ADM), which turns corn into ethanol, sweeteners and feed, and to Tyson Foods (NYSE:TSN), which buys the grain indirectly through the cost of feeding livestock.

The drop of 1.55 cents leaves corn down 1.38% on the week and 10.47% on the month. Even so, the market is still 2.14% higher this year and 4.22% above a year ago, so the latest weakness follows a higher starting point.

Plenty of Corn, Few Buyers

The corn market has a simple problem: the harvest is delivering a very large crop at a time when overseas buyers are staying away. Ethanol plants are doing their part, but domestic grind alone cannot absorb a record supply.

A Record Crop in the Bin

The USDA projects record 2026/27 production of 16.03 billion bushels, with ending stocks of 1.849 billion bushels. About 60% of the crop had been harvested by 25 October, six points behind the five-year average, and drier weather could speed fieldwork. A faster harvest would bring more grain to market sooner.

Exports Are the Weak Spot

Export Demand is the part of the picture that does not fit a record-crop story. Weekly inspections fell almost 49% to 672,475 tonnes, the lowest since October 2024, and shipments for the Marketing year trail last year by 2.3%. Weekly sales of 51 million bushels were in line with expectations, but year-to-date commitments are down 34% against a USDA forecast of a 4% decline, and equal 28% of the USDA's full-year forecast compared with a 38% historical average.

China is not helping. Gulf corn was trading about US$115 a tonne over Dalian, well below the roughly US$150 premium typically seen when China is buying, and no US corn or wheat sales to China have been recorded this marketing year, despite Beijing's pledges to buy more US farm goods. EU corn imports are up 40% since 1 July, which shows demand exists elsewhere.

Ethanol Provides a Floor

Ethanol is the steadier source of demand. Output rose to 329 million gallons, up from 322 million the week before and 2.5% above a year earlier, and it was above the pace needed to meet the USDA's usage forecast for the first time in six weeks. Fund positioning was not extreme, with speculators net buyers of about 3,000 contracts and open interest up by 29,000.

What It Means for ADM and Tyson

For ADM, cheaper corn lowers processing costs but can also reduce merchandising margins and farmer selling, so the net effect shows up in its results. ADM is expected to report third-quarter results on Tuesday 3 November.

Tyson sits at the other end of the chain. Corn is a feed cost that passes through the Supply chains of the cattle, hog and poultry producers that sell to meat processors, so lower grain prices ease costs for them over time. The effect is indirect, because beef, pork and chicken prices and other costs drive processor margins too.

Others touch the same market. Bunge (NYSE:BG) trades and processes grains and oilseeds, and on 29 October it kept its full-year adjusted Earnings outlook at US$9.25 to US$9.75 per share. Corteva (NYSE:CTVA) sells seed and crop protection, so lower corn prices can influence farm spending. Ingredion (NYSE:INGR), a corn-based ingredients company, agreed to buy a UK specialty ingredients group for US$3.6 billion in a deal reported on 30 June.

Corn Watch: Export Sales, Harvest Pace and the ADM Report

Weekly USDA export sales, harvest progress and EIA ethanol data are the regular releases to follow. ADM's report on Tuesday 3 November is the next dated company event.

Support could come from a confirmed Chinese purchase, faster ethanol grind or a slower harvest. Pressure could build if the harvest accelerates in dry weather, if exports keep trailing the USDA forecast or if the record crop is confirmed in final yields.