Prepared: August 23, 2026
What this audit is for. The August 2026 WASDE only moved markets to the degree it differed from what the trade already expected. This document lines up every major August figure against the pre-report survey average, so the “surprise” column — not the headline number — explains the price reaction. Surprise is calculated as USDA actual minus trade average.
August 2026 WASDE: Headline Scorecard
| Metric | Trade estimate | USDA actual | July WASDE | Surprise |
|---|---|---|---|---|
| Corn yield (bu/ac) | 182.4–182.5 | 180.7 | 183.0 | −1.7 to −1.8 bu · bullish |
| Soybean yield (bu/ac) | 52.9 | 52.7 | 53.0 | −0.2 bu · mildly bullish |
| Corn harvested acres (M) | ~87.6 | 88.592 | 87.434 | +~1.0M above trade |
| Soybean harvested acres (M) | ~84.8 | 85.781 | 84.401 | +~1.0M above trade |
| Corn ending stocks 26/27 (bb) | 1.725–1.73 | 1.653 | 1.79 | −72 to −77 mb · bullish |
| Soybean ending stocks 26/27 (mb) | 302–306 | 320 | 310 | +14 to +18 mb · bearish |
| Wheat ending stocks 26/27 (mb) | 718 | 717 | 722 | In line with trade |
Sources: American Ag Network, AgBull, DTN, AgroLatam, Producer.com. Full source list at the end.
Executive Summary
USDA’s August 12 WASDE delivered the crop year’s first survey-based yield data, and the headline surprise was a corn yield that undercut trade expectations by roughly two bushels an acre. USDA pegged the national corn yield at 180.7 bushels per acre against an average trade guess of 182.4–182.5, with the high end of the range — including StoneX’s closely watched survey — sitting at 184.8. Soybean yield came in at 52.7 bushels per acre, a smaller miss versus the 52.9 trade average. Both misses were partially offset by acreage: Farm Service Agency data lifted corn harvested acres to 88.592 million and soybean harvested acres to 85.781 million, each roughly a million acres above pre-report expectations.
The net effect on production was muted — corn output rose slightly to 16.013 billion bushels and soybean output to a record 4.519 billion — but the ending-stocks math diverged sharply by crop. Corn’s 2026/27 carryout was cut to 1.653 billion bushels, well below both July’s 1.79 billion and the trade’s 1.725–1.73 billion, as USDA raised old- and new-crop exports by 75 million bushels each on strong global demand and constrained Ukrainian supply. A below-trend yield miss plus a larger stocks miss read as unambiguously bullish, and December corn jumped roughly 20 cents — about 4.5% — to a two-week high near $4.81.
Soybeans told the opposite stocks story. Despite the yield miss, record acreage pushed 2026/27 ending stocks to 320 million bushels, above both July’s 310 million and the trade’s 302–306 million — yet futures still gained about 1.2%, as a same-day 244,000-tonne flash sale to China and firm crush margins offset a technically bearish balance sheet.
Wheat was largely a bystander to the U.S. numbers and still posted the day’s biggest percentage gains, with Chicago up over 20 cents. That move was not a WASDE signal: Ukrainian drone strikes had shut Russia’s Novorossiysk export terminal overnight, layering geopolitical risk premium on a report that trimmed U.S. wheat production only modestly. Globally, USDA cut corn stocks to 274.7 MMT while raising Brazilian and Argentine old-crop output, left soybean world stocks essentially flat, and cut world wheat production 0.7 MMT to 819.3 MMT on EU drought. In our opinion, corn now carries the tightest and most price-supportive of the three balance sheets, soybeans remain demand-dependent despite ample supply, and wheat is increasingly hostage to Black Sea logistics rather than U.S. fundamentals alone.
This audit compares USDA’s official August 2026 WASDE and Crop Production figures against pre-report trade and analyst survey averages compiled by Reuters and the Dow Jones newswire survey, as reported by agricultural trade press ahead of the release. “Surprise” is USDA actual minus trade average. August is the first WASDE of the marketing year to incorporate NASS farmer-survey data rather than trend-line projections alone, which typically produces the year’s largest single-report revisions. For a walkthrough of how positioning data reacts to reports like this one, see our guide to reading the COT report. All bushel and acreage figures are U.S. only unless labeled world or global.
Corn: Trade Expectations vs. Actual
| Item | Trade estimate | USDA actual | July WASDE | vs. trade |
|---|---|---|---|---|
| Yield (bu/ac) | 182.4 avg · 180.5–184.8 | 180.7 | 183.0 | −1.7 bu |
| Planted acres (M) | ~95.3–96 | 96.7 | 95.3 (Jun) | +~1.0–1.4M |
| Harvested acres (M) | ~87.6 | 88.592 | 87.434 | +~1.0M |
| Production (bb) | 15.944 avg · 15.78–16.16 | 16.013 | 16.000 | +69 mb |
| 2025/26 ending stocks (bb) | 2.010 | 1.945 | 2.02 | −65 mb |
| 2026/27 ending stocks (bb) | ~1.725–1.73 | 1.653 | 1.79 | −72 to −77 mb |
| Season-avg farm price ($/bu) | — | $4.50 | $4.40 | Raised |
Sources: DTN, Producer.com, Southern Ag Today, USDA WASDE.
Analysis. The 2.3-bushel cut from July’s 183.0 trendline estimate to 180.7 was the season’s first survey-based read, and it landed toward the low end of the pre-report range, roughly 1.7–1.8 bushels under the trade average. Yield weakness concentrated in South Dakota, Nebraska and North Dakota, while acreage gains were led by Iowa, Minnesota, North Dakota, Wisconsin and Ohio. Because the 1.2-million-acre harvested-area increase almost fully offset the yield cut, headline production actually rose to 16.013 billion bushels — the second-largest U.S. corn crop on record, behind only 2025/26’s 17.021 billion. The real story sat on the demand side: USDA raised both 2025/26 and 2026/27 exports by 75 million bushels each, reflecting strong global demand and constrained Ukrainian export capacity, which combined with lower beginning stocks to drag 2026/27 ending stocks to 1.653 billion bushels — 137 million below July and 72–77 million below the trade’s pre-report guess. USDA raised its 2026/27 season-average farm price forecast to $4.50 on the tighter outlook.
Soybeans: Trade Expectations vs. Actual
| Item | Trade estimate | USDA actual | July WASDE | vs. trade |
|---|---|---|---|---|
| Yield (bu/ac) | 52.9 avg · 52.0–53.5 | 52.7 | 53.0 | −0.2 bu |
| Planted acres (M) | ~85.4 | 86.8 | 85.4 (Jun) | +1.4M |
| Harvested acres (M) | ~84.8 | 85.781 | 84.401 | +~1.0M |
| Production (bb) | 4.469 avg · 4.389–4.523 | 4.519 | 4.475 | +50 mb |
| 2025/26 ending stocks (mb) | 330 | 325 | 330 | −5 mb |
| 2026/27 ending stocks (mb) | 302–306 | 320 | 310 | +14 to +18 mb |
| Season-avg farm price ($/bu) | — | $11.40 | $11.40 | Unchanged |
Sources: AgroLatam, DTN, McKeany-Flavell.
Analysis. Soybean yield fell only three-tenths of a bushel from July’s 53.0 to 52.7, landing just below the trade average but well within the expected range. As with corn, a 1.4-million-acre bump in planted area — to a record 86.8 million acres — meant the modest yield miss did not stop production from climbing to a projected record 4.519 billion bushels, up 44 million from July. USDA raised projected crush by 30 million bushels for 2026/27 on strong processing margins and soybean-oil and meal demand, but left exports unchanged; the net result was that 2026/27 ending stocks still rose to 320 million bushels, 10 million above July and 14–18 million above the trade. On paper, the larger stocks build was the more bearish of the two crops’ balance-sheet changes, but the market largely looked past it: a same-day flash sale of 244,000 metric tons to China, plus reports that China had booked roughly 13 additional cargoes — about 5 million tonnes of new-crop purchases — under the year’s $25 billion purchase framework kept demand sentiment constructive.
Harvested Acreage Audit
| Crop | July WASDE | Expected | August actual | Surprise |
|---|---|---|---|---|
| Corn | 87.434 | ~87.6 | 88.592 | +~1.0M |
| Soybeans | 84.401 | ~84.8 | 85.781 | +~1.0M |
NASS attributed the larger-than-expected acreage revisions to a methodology shift: for the first time, the agency leaned more heavily on Farm Service Agency administrative acreage data, satellite and remote-sensing inputs, and objective yield measurements to strengthen its acreage and yield estimates, rather than relying solely on the traditional farmer acreage survey. Both crops picked up roughly 1.2–1.4 million acres versus July — a pattern traders had partly anticipated after last year’s August report added 2.1 million extra corn acres once FSA data landed the same day as the yield figures.
U.S. Ending Stocks Audit
| Crop/marketing year | Trade | USDA actual | July | Surprise |
|---|---|---|---|---|
| Corn 2025/26 old crop (bb) | 2.010 | 1.945 | 2.020 | −65 mb · bullish |
| Corn 2026/27 new crop (bb) | ~1.725–1.73 | 1.653 | 1.790 | −72 to −77 mb · bullish |
| Soybeans 2025/26 old crop (mb) | ~330 | 325 | 330 | −5 mb · bullish |
| Soybeans 2026/27 new crop (mb) | 302–306 | 320 | 310 | +14 to +18 mb · bearish |
| Wheat 2026/27 (mb) | 718 | 717 | 722 | −1 mb · in line |
DTN’s lead analyst characterized the U.S. ending-stocks slate as bullish for corn, neutral for soybeans, and neutral to slightly bullish for wheat. Corn’s stocks-to-use ratio tightened the most of the three crops given the combination of a yield cut and higher exports. Wheat’s 717-million-bushel carryout, while down slightly from July, remained about 22% above the prior marketing year’s level.
Global Supply-Demand Adjustments
| 2026/27 world ending stocks | August | July | Trade | Change |
|---|---|---|---|---|
| Corn (MMT) | 274.7 | 275.3 | ~273.4 | −0.6 vs. July · +1.3 vs. trade |
| Soybeans (MMT) | 124.2 | 124.2 | ~124.4 | Flat · −0.2 vs. trade |
| Wheat (MMT) | 273.3 | 272.8 | ~271.9 | +0.5 vs. July · +1.4 vs. trade |
Corn. World production was raised 1.8 MMT to roughly 1,298.9 MMT, a net of offsetting regional moves — the EU crop cut 3.6 MMT on hot, dry weather, Russia and Ukraine raised a combined 3.2 MMT on favorable rainfall and cooler reproduction-stage temperatures, with the U.S. and Canada also bumped higher. For the current 2025/26 year, Brazil’s corn crop was raised 2 MMT to 140 MMT and Argentina’s 2 MMT to 63 MMT, though Brazil’s exports were trimmed 1 MMT to 42 MMT; the 2026/27 forecasts for both held unchanged at 139 and 55 MMT. Foreign ending stocks rose on gains for Ukraine, Russia and Zambia, partly offset by a Brazilian decline. DTN noted the world corn stocks-to-use ratio excluding the U.S. and China is now the second-tightest since 2001, effectively funneling incremental global demand toward U.S. and, to a lesser extent, Brazilian supply.
Soybeans. Global production continues what DTN calls an inexorable increase, rising from 428 MMT in 2024/25 to roughly 442.25 MMT projected for 2026/27, with Brazilian output alone climbing from 130 MMT in 2021/22 to 186 MMT projected for 2026/27. For 2025/26, Brazil was raised 0.5 MMT to 180.50, and Argentina cut 0.5 MMT to 49.50; both 2026/27 forecasts held unchanged. Global exports were essentially unchanged as lower Ukrainian volumes offset higher Argentine, and global crush was raised for the U.S. and Canada but lowered for Ukraine, leaving world ending stocks nearly flat. Despite ample supply, DTN pegs the soybean stocks-to-use ratio at roughly 7%, the tightest since 2022/23 — though prices remain well below that period’s levels.
Wheat. World 2026/27 production was trimmed 0.7 MMT from July to 819.3 MMT — down a sharp 24.1 MMT from 2025/26’s 843.4 MMT — driven primarily by a lower EU crop on drought and partially offset by increases elsewhere. World ending stocks nonetheless edged higher on larger inventories in Canada and Ukraine, coming in above both July and the pre-report trade expectation.
China demand. Ahead of the report, roughly 20–24% of the year’s $25 billion U.S.–China agricultural purchase framework had been fulfilled, with the unfulfilled balance flagged by analysts as a key market risk heading into a possible Trump–Xi meeting this fall. On report day USDA confirmed a 244,000-tonne soybean flash sale to China, and separate reporting indicated China had booked around 13 cargoes — roughly 5 million tonnes — of new-crop soybean purchases in the surrounding days.
Market Reaction & Price Volatility
| Contract | Pre-report | Aug 12 close | Move | % |
|---|---|---|---|---|
| December corn | ~$4.60½ | $4.80¾ | +20¼¢ | +4.5% |
| September corn | ~$4.36½ | $4.57 | +20½¢ | +4.7% |
| November soybeans | ~$11.68¾ | $11.83¼ | +14½¢ | +1.2% |
| September Chicago (SRW) wheat | $6.30½ | $6.52¾ | +22¼¢ | +3.6% |
| December Chicago wheat | — | $6.69¾ | +21½¢ | +3.3% |
| September Kansas City (HRW) wheat | — | $7.20¾ | +21½¢ | — |
Sources: ProFarmer After the Bell, TradingView/Dow Jones, Total Farm Marketing, Hoosier Ag Today.
Volatility drivers. Corn recorded the sharpest single-session move of the three major crops, driven almost entirely by the ending-stocks miss rather than the production number, since headline output was roughly in line with expectations. Within the first thirty minutes of release, September corn jumped 11 cents and December 10 cents, before extending into the close as technical buying kicked in once prices cleared moving-average resistance near $4.70–4.72. Soybeans whipsawed more than the closing numbers suggest: November initially dropped, spiked to nearly $12.00 intraday, then retreated about 17 cents into the close, reflecting the tension between a technically bearish stocks build and constructive Chinese demand headlines. Wheat’s volatility was compounded by a non-WASDE shock — Ukrainian drone strikes forced the overnight closure of Russia’s Novorossiysk Black Sea export terminal, adding risk premium on top of a modestly supportive report. Brokers noted wheat did little off the report itself, with the rally almost entirely attributable to the port closure.
Key Takeaways for Producers, Hedgers & Grain Marketers
Corn carries the tightest story of the three crops. A survey-based yield cut plus a larger-than-expected export-driven stocks draw pushed the 2026/27 stocks-to-use ratio to its tightest in two years, and USDA’s own $4.50 season-average price forecast reflects that shift. In our opinion, rallies on weather concerns or further export strength are the more credible near-term scenario than a fresh leg lower. Our weekly positioning report tracks how funds and commercial hedgers have traded this balance sheet since.
Soybeans have a heavier balance sheet than corn but a stronger demand tailwind. The stocks build to 320 million bushels is nominally bearish, but Chinese flash-purchase activity and firm crush margins mean price direction may hinge more on demand execution than on the balance sheet alone — worth monitoring the pace at which the $25 billion purchase framework is fulfilled. If you are working through unpriced bushels, our crop marketing tools and grain producer desk are built for this decision.
Wheat’s price action this month says more about the Black Sea than about U.S. fundamentals. With Ukrainian export infrastructure vulnerable to further strikes, wheat carries the largest geopolitical tail risk of the three crops even though its own balance sheet moved only marginally.
Acreage methodology changes are worth tracking going forward. NASS’s greater reliance on FSA administrative data, satellite and remote sensing, and objective yield measurements produced acreage surprises of roughly a million acres in both corn and soybeans this month — a pattern that may recur as the agency continues refining its data sources. Late-season acreage surprises also change how basis behaves into harvest — see basis risk.
Common Questions About the August 2026 WASDE
Why did corn rally when USDA raised production?
Because the surprise was on the demand side, not the supply side. USDA cut yield 2.3 bushels to 180.7 but added roughly 1.2 million harvested acres, so headline production actually rose to 16.013 billion bushels. Meanwhile, USDA raised old- and new-crop exports by 75 million bushels each, dropping 2026/27 ending stocks to 1.653 billion bushels — 72 to 77 million below what the trade expected. Traders price the carryout, not the crop.
What was the August 2026 WASDE corn yield estimate?
180.7 bushels per acre, down from 183.0 in July and 1.7 to 1.8 bushels below the average pre-report trade estimate of 182.4 to 182.5. It landed near the bottom of the expected range, which ran from 180.5 to 184.8.
Why is the August WASDE more important than other months?
It is the first report of the marketing year to use NASS farmer-survey data rather than trend-line projections alone. That makes it the report most likely to produce large single-month revisions, and it is why traders position around it more heavily than around a typical WASDE.
Why did soybean ending stocks rise if the yield was cut?
Acreage more than offset it. Yield slipped only three-tenths of a bushel to 52.7, while planted area jumped 1.4 million acres to a record 86.8 million. Production reached a record 4.519 billion bushels, and even with crush raised 30 million bushels, 2026/27 carryout rose to 320 million — above both July and the trade estimate.
Did the August WASDE move wheat?
Not really. U.S. production at 1.53 billion bushels and carryout at 717 million were both close to expectations. Wheat posted the day’s largest percentage gain, but the driver sat outside the report — Ukrainian drone strikes closed Russia’s Novorossiysk export terminal overnight. Brokers noted wheat did nothing essentially off the WASDE itself.
Source List
- USDA, WASDE report page — usda.gov
- USDA, August 2026 WASDE full PDF — usda.gov
- USDA, WASDE Lockup Briefing, August 12, 2026 — usda.gov
- USDA NASS, August Crop Production Executive Briefing — nass.usda.gov
- American Ag Network, “USDA WASDE Calls for Lower Yields, Higher Harvested Area” — americanagnetwork.com
- American Ag Network, “Traders Brace for August WASDE as Yield Debate Heats Up” — americanagnetwork.com
- American Ag Network, “One Analyst Says Take the Numbers at Face Value” — americanagnetwork.com
- DTN, “USDA Raises Corn, Soybean Production With More Planted Acres” — dtnpf.com
- DTN, “August WASDE to Take Another Look Into Upcoming Crop Sizes” — dtnpf.com
- DTN, “WASDE August 2026: Macro Trends in the Grain Markets” — dtnpf.com
- AgWeb, “After Last Year’s Shock, August WASDE Faces New Uncertainties” — agweb.com
- AgBull, “USDA Finds More Acres but Lower Yields in High-Stakes August Reset” — agbull.com
- AgroLatam, “Could USDA’s Corn Stocks Cut Spark a Grain Market Rally?” — agrolatam.com
- Producer.com, “CBOT Weekly: Corn Cuts Stand Out in August WASDE” — producer.com
- Southern Ag Today, “August WASDE Brings New Acreage and Yield Estimates” — southernagtoday.org
- McKeany-Flavell, “August 2026 WASDE Updates” — mckeany-flavell.com
- Iowa Farm Bureau, “August 2026 WASDE” — iowafarmbureau.com
- ProFarmer, “After the Bell: Grains Rally Following August WASDE” — profarmer.com
- TradingView/Dow Jones, “Corn Futures Higher After USDA Makes Surprise Cut” — tradingview.com
- Total Farm Marketing, “TFM Daily Market Summary 08-12-2026” — totalfarmmarketing.com
- Hoosier Ag Today, “USDA WASDE August Report” — hoosieragtoday.com
- Grains Prices, Black Sea / WASDE market wrap — grainsprices.com
- Tridge, August 12, 2026 grain market news — insights.tridge.com
- Rio Times, “Grains: Soy, Corn LatAm — Thursday, August 13, 2026” — riotimesonline.com
- ProAg, “August WASDE Report Projects Bigger Corn Crop, Tighter Wheat Supplies” — proag.com
- Red River Farm Network, WASDE report coverage — rrfn.com
Figures are drawn from USDA’s August 2026 WASDE and Crop Production releases and from publicly reported trade press; pre-report trade estimates reflect third-party survey averages as published ahead of the release. Verify all price levels against your own quote provider. This material is provided for general information and education and is the opinion of Ag Optimus; it should not be construed as a solicitation or as a recommendation to buy or sell any futures or options contract. Trading futures, options, and swaps involves substantial risk of loss and is not suitable for all investors. Past performance is not necessarily indicative of future results. Optimus Futures does not maintain a research department as defined in CFTC Rule 1.71. Ag Optimus is a registered DBA of Optimus Futures LLC [NFA ID 0481133]. All trading decisions remain yours.
