May 18 | Closing Market Report

Why It Matters

If China follows through on large purchases, U.S. grain prices and farm revenues could see sustained support, influencing planting and input demand; meanwhile, structural differences highlighted in the U.S.-Brazil cost comparison underscore competitive pressures and scale advantages shaping global corn markets.

Summary

Chicago commodity markets jumped Monday as corn, soybeans and wheat rallied sharply on renewed optimism about potential Chinese purchases and aggressive fund buying; July corn surged about $2.14 to settle near $4.77 while soybeans and wheat also posted sizeable gains. Crude oil climbed above $104 a barrel, while live cattle and hog futures fell. Market participants cautioned the China commitments remain unconfirmed and that logistics and enforcement questions must be answered before gains are locked in. Planting progress was reported above last year’s pace, and Purdue highlighted a comparative study of corn production showing much larger average farm size in Mato Grosso, Brazil (≈6,000 acres) versus Iowa (≈2,000 acres).

Original Description

The May 18, 2026, Closing Market Report highlighted a strong rebound in commodity futures, fueled by optimism over a potential $17 billion increase in Chinese agricultural purchases facilitated by the Trump administration's proposed US-China Board of Trade. 

Discussing global competitiveness, agricultural economist Joana Colussi noted that while Brazil produces corn at a lower total cost—largely through its second-crop (safrinha) system—the United States remains competitive by achieving double the average yields despite higher overhead and land expenses. 

Finally, meteorologist Mark Russo reported that favorable weather continues to support rapid planting progress in the US Corn Belt and the safrinha crop in Brazil, though severe long-term dryness continues to plague the US hard red winter wheat regions.

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Chapters

- Ag Markets with Curt Kimmel, AgMarket.net

- Comparing Corn Production Costs in the United States and Brazil

- US-China Ag Deliverables: Board of Trade, Soybean Sales, $17bln

- Ag Weather with Mark Russo, EverStream.ai

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