Iran-US peace talks and tumbling crude oil are dragging the entire complex lower at midday, overshadowing what was a genuinely supportive wheat production cut in Thursday's WASDE.
The grain complex trades mostly lower at Friday's midday, with corn establishing new contract lows in both July and December as Thursday's WASDE confirmed a global supply build led by sharply higher South American output. Wheat is mixed but holding up better relative to corn and soybeans, supported by a historic cut to US winter wheat production even as the broader macro backdrop — falling crude oil on reports of a possible US-Iran agreement and favorable Midwest weather — weighs on the entire space. Soybeans are lower, extending Thursday's speculative selling as the market searches for a price level that can stimulate fresh Chinese demand.
Reports of US-Iran Peace Deal Send Crude Oil to a Two-Month Low
Iranian state media reported that the US and Iran are close to agreeing on a peace proposal that would reopen the Strait of Hormuz in exchange for the US lifting oil sanctions, with wire services suggesting a memorandum of understanding could be signed as early as Sunday in Switzerland. Spot WTI crude oil fell to a two-month low, down $3.40/barrel to near $84.30, with RBOB down 11 cents/gallon and heating oil 18 cents lower. This is broadly bearish for the entire grain complex through the energy-biofuel linkage, pressuring corn via ethanol economics and soybeans via the soy oil-biodiesel channel, while also reversing the geopolitical risk premium that had supported wheat earlier in the week.
Corn Sets New Contract Lows Despite Modest Morning Gains
Jul '26 and Dec '26 corn both touched new contract lows overnight before stabilizing, with July currently $0.03 lower at $4.08¾ and December off $0.03¾ at $4.35¾. Support for July sits near $4.05, the January low on the weekly chart — a level now within close reach. The source describes Thursday's USDA data as neutral to bearish given the increase in global stocks, which is the dominant technical and fundamental backdrop pressuring corn into the weekend.
WASDE Confirms Massive South American Production Increase
Thursday's WASDE raised Brazilian corn production by 3 MMT to 138 MMT and Argentine production by 2 MMT to 61 MMT, continuing a trend that has seen the two countries' combined output rise 15 MMT over the past two months. The largest single increase was in India, up 9 MMT to 55 MMT, though the source notes this is unlikely to materially affect global trade flows. The scale of the South American revisions is the primary driver of corn's new contract lows, as it signals a much larger pool of competing world supply than the market had priced even a week ago.
Argentina Corn Harvest Progress Diverges Sharply Between Sources
The BAGE held its Argentine corn production forecast unchanged at 64 MMT — well above the USDA's 59 MMT estimate from earlier in the week — while reporting harvest at 44% complete, significantly behind the 55% figure reported by the Rosario Grains Exchange. This divergence in harvest pace estimates adds uncertainty to the South American supply timeline, but with both agencies pointing to production well above the USDA's figure, the directional bias remains bearish for US corn competitiveness regardless of which harvest pace proves accurate.
US Wheat Production Cut to Lowest Level in Over 50 Years
The monthly Crop Production report showed winter wheat production at 1.029 billion bushels, an 18 million bushel cut from last month and below trade estimates, with yield trimmed 0.8 bushels per acre to 46.8 bpa — the lowest in a decade — on unchanged harvested acres. The source describes this as the first June production cut since 2014 and the lowest production figure in over 50 years, characterizing Thursday's data as neutral to supportive for wheat. The WASDE left old crop US wheat stocks steady at 935 million bushels while cutting new crop carryout by 18 million bushels to 744 million bushels — a genuinely tightening domestic balance sheet that is helping wheat outperform corn and soybeans at Friday's midday despite the broader bearish macro tone.
Wheat Export Sales Pace Lags Five-Year Average to Start New Marketing Year
FAS weekly Export Sales data showed new crop wheat business at 4.591 MMT as of June 4 to start the 2026/27 marketing year, equal to 21.77% of the USDA's export projection, compared to the five-year average pace of 23.18%. While the production cut is supportive, this export pace shows that the demand side of the wheat balance sheet has not yet begun to reflect the tighter supply picture — a gap that, if it persists, would limit how far wheat can rally on the production news alone.
European Wheat Crop Conditions Mixed but Broadly Stable
FranceAgriMer's latest data showed the French soft wheat crop at 77% good/excellent, up 1 percentage point from the prior week, while the durum crop slipped 1 percentage point to 64% good/excellent. The modest improvement in soft wheat conditions is a mildly bearish offset to the US production cut, reinforcing that while US supply has tightened meaningfully, the European crop is not showing comparable deterioration that would compound the global tightening narrative.
Soybeans Extend Speculative Selling as Market Seeks a Demand-Clearing Price
Jul '26 soybeans are $0.02½ lower at $11.12½ and Nov '26 is $0.03¼ lower at $11.30¾, with crush margins slipping another $0.05 to $3.62½/bu. The source attributes Thursday's weakness to speculative selling amid mostly favorable weather, with prices searching for a level that stimulates renewed Chinese buying interest. Thursday's WASDE held US old crop stocks steady at 340 million bushels, though with an internal shift of 20 million bushels from exports to crush, while Argentine production was raised 2 MMT to 50 MMT — both BAGE and USDA now align near 50 MMT, with BAGE reporting Argentine harvest at 95% complete. Export Sales data showed 2025/26 soybean commitments at 40.15 MMT, now 97.7% of the USDA's lowered projection and behind the 100% average pace, with new crop sales of 1.032 MMT running 7.69% below year-ago levels — a demand picture that remains a headwind heading into the weekend.
Wheat
Jul '26 CBOT SRW wheat is at $5.87, up ¼ cent at Friday's midday, with KC HRW July 2 to 3 cents higher and MPLS spring wheat showing mixed trade from fractionally higher to 2 cents lower. In the source's separate price commentary, CGO July-26 is shown $0.02¼ lower at $5.84½, KC July-26 $0.02 lower at $6.32¾, and MIAX July-26 off $0.02½ at $6.17 — reflecting mixed action across the wheat classes. The dominant driver remains Thursday's WASDE, which cut US winter wheat production to 1.029 billion bushels, the lowest in over 50 years, and trimmed new crop carryout by 18 million bushels to 744 million bushels, providing fundamental support that is helping wheat outperform corn and soybeans even as falling crude oil weighs on the broader complex.
Corn
Jul '26 CBOT corn is at $4.13, up 1¼ cents according to the headline quote, though the separate price commentary shows July-26 $0.03 lower at $4.08¾ and Dec-26 off $0.03¾ at $4.35¾, with both contracts establishing new contract lows overnight before paring losses. The CmdtyView national average cash corn price is up 1¼ cents at $3.81. Thursday's WASDE raised old crop US ending stocks 3 million bushels to 2.145 billion bushels, with corn-for-ethanol usage cut 25 million bushels offset by a 25 million bushel increase in exports; new crop carryout rose 3 million bushels to 1.96 billion bushels. The combination of the new contract lows and a 15 MMT two-month increase in combined Brazilian and Argentine output frames Friday's price action as fundamentally bearish despite the modest morning bounce in the headline quote.
Soybeans
Jul '26 CBOT soybeans are at $11.13¾, down 1¼ cents at Friday's midday, with the separate price commentary showing July-26 $0.02½ lower at $11.12½ and Nov-26 $0.03¼ lower at $11.30¾. The CmdtyView national average cash bean price is down a penny at $10.60½, with Jul '26 soymeal mixed from down 20 cents to up a dime and Jul '26 soy oil 20 to 36 points lower. Crush margins have slipped to $3.62½/bu. Thursday's WASDE left US old crop stocks steady at 340 million bushels with an internal 20 million bushel shift from exports to crush, while raising Argentine production 2 MMT to 50 MMT. With NOPA crush data due Monday — traders looking for May crush of 216.02 million bushels — and the market still searching for a price that draws fresh Chinese buying, the path of least resistance into the weekend remains lower.