Key Facts
The wheat fund WEAT fell 2.31% to US$24.90, corn fund CORN 1.24% to US$19.05 and soybean fund SOYB 0.50% to US$27.59 on Wednesday 7 October (RT).
Brazil had planted 7.3% of its 2026-27 soybean crop by 1 October, against 9% a year earlier, the consultancy AgRural reported.
AgRural estimates Brazil’s 2026-27 soybean crop at 182.7 million tonnes.
The US Department of Agriculture’s monthly WASDE supply report is due on Friday 9 October at 16:00 UTC (17:00 Lisbon).
Today’s Focus
Grain funds fell on Wednesday 7 October. The WEAT wheat fund lost 2.31% to US$24.90, the CORN fund 1.24% to US$19.05 and the SOYB soybean fund 0.50% to US$27.59.
Brazil and Argentina are the world’s export engine for soy and corn, so planting progress matters. AgRural said that 7.3% of Brazil’s soybean crop was planted by 1 October, behind last year’s 9%.
Traders are waiting for the US Department of Agriculture’s WASDE report on Friday.
What matters today. Grain prices are under pressure from large US supplies, while slower Brazilian planting is a small support for soybeans.
01 The session in one read
Wheat fell most. The WEAT fund lost 2.31% to US$24.90 after two days of gains. The CORN fund fell 1.24% to US$19.05 and SOYB 0.50% to US$27.59.
These funds hold futures contracts, not physical grain, so their moves differ from cash prices. We have no verified futures settlements for the session.
The S&P 500 fell 0.22% and the dollar index rose 0.41%, which usually weighs on dollar-priced crops.
Assessment — Small falls ahead of the USDA report MEDIUM
The evidence points to position-squaring before Friday’s USDA supply report, after wheat and corn had risen on the two previous days.
The variable to watch is the WASDE report. We cannot say from one session whether the falls will continue.
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02 The board
Soybean fund SOYB, daily chart to 7 October 2026. Source: Rio Times market data (RT).
SOYB, CORN and WEAT are exchange-traded funds that hold futures for soybeans, corn and wheat.
Asset
Level
Change
Soybeans (SOYB)
US$27.59
-0.50%
Corn (CORN)
US$19.05
-1.24%
Wheat (WEAT)
US$24.90
-2.31%
Source: RT, close of 2026-10-07. Where a commodity has no spot feed, an exchange-traded tracker or leading producer is shown as a labelled proxy.
No futures settlement was verified for the session; the funds are labelled proxies.
Live Market IntelligenceThe live market board
Rio Times · Live Market Intelligence
Latin America — Cross-Market Board
Regional
Oct 7, 2026 · 22:06
Ibovespa · benchmark
204,302.33
-0.74%
L 167,142day rangeH 168,310
+21.85% over 12 months
Market breadth · 5 names
0% advancing
0 ▲ advancing5 declining ▼
Currencies, rates & key inputs
Latin America scoreboard
IndexLastTodayStrength
204,302.33
-0.74%
64,460.91
-1.30%
10,999.64
-1.47%
2,824,123
-2.51%
2,534.92
-2.09%
60,766.81
-1.71%
Full instrument board
Instrument
Last
Change
YoY
Prev.
High
Low
Volume
IBOV
204,302.33
-0.74%
+21.85%
205,835.29
168,310
167,142
—
IPSA
10,999.64
-1.47%
—
11,163.42
11,210
10,984
1,513,213,483
IPC MEX
64,460.91
-1.30%
+12.17%
65,312.46
66,121
65,405
108,886,187
MERVAL
2,824,123
-2.51%
+30.51%
3,022,485
3,042,365
2,991,150
—
COLCAP
2,534.92
-2.09%
—
9.04
9.05
9.02
4,133
BVL PERÚ
60,766.81
-1.71%
—
—
—
—
—
USD/BRL
5.16
+0.01%
-5.13%
5.16
5.18
5.14
—
EUR/BRL
5.95
+1.01%
-5.83%
5.89
5.98
5.94
—
USD/MXN
17.06
-0.24%
-8.58%
17.10
17.08
17.01
—
USD/CLP
913.98
+0.04%
-5.67%
913.65
915.11
906.68
—
USD/COP
3,140
+0.03%
-22.04%
3,139
3,141
3,105
—
USD/PEN
3.36
-0.66%
-4.82%
3.38
3.38
3.35
—
USD/ARS
1,493
+0.10%
+12.96%
1,491
1,494
1,480
—
USD/UYU
40.27
+1.24%
+1.80%
39.77
40.27
40.23
—
USD/PYG
5,939
+1.68%
-19.54%
5,841
5,939
5,925
—
USD/BOB
11.64
-0.76%
+72.04%
11.73
11.72
11.64
—
USD/DOP
58.34
+1.25%
-3.44%
57.62
58.34
58.04
—
USD/CRC
445.92
+0.89%
-9.71%
441.97
448.50
445.92
—
Largest moves today
-2.51%
-2.09%
-1.71%
+1.68%
-1.47%
-1.30%
+1.25%
+1.24%
The session read
The Ibovespa eased 0.74%, with breadth negative — 0 of 5 names higher. IPC MEX led, while MERVAL lagged.
03 What moved it
A firmer dollar and a weaker stock market weighed on crops. Corn and wheat had both risen on the two previous days, so some profit-taking was likely.
Planting in Brazil is slower than last year. AgRural said 38% of the first corn crop was planted by 1 October, against 40% a year earlier.
04 The Latin American read
Brazil and Argentina are major exporters of soybeans and corn. Slow planting is a risk for Brazil’s 2026-27 crop, which AgRural estimates at 182.7 million tonnes of soybeans.
A weaker real, at 5.02 per US dollar on Wednesday, raises the local-currency value of exports sold in dollars.
05 The names to watch
The SOYB fund is the closest US-listed proxy for soybeans, Brazil’s biggest export crop.
WEAT fell most. Argentina is a major wheat exporter, so wheat prices matter for its trade income.
06 The outlook
Friday’s WASDE report is the next test. A higher crop estimate would add to supply and could weigh on prices; a cut would support them.
Weather in Brazil and Argentina will matter as planting continues.
07 What to watch
USDA WASDE, Friday 9 October: The monthly report updates US and world crop estimates at 16:00 UTC.
Brazil planting pace: AgRural’s weekly update will show whether the delay narrows.
US dollar: A stronger dollar weighs on dollar-priced crops.
Argentina and Brazil currencies: Weaker currencies raise local export income.
Background: Corn Fund Gains 2.1% as Soy, Wheat Rise | Grains, Oct 6.
Frequently Asked Questions
Which grain fell most on 7 October?
Wheat. The WEAT fund fell 2.31% to US$24.90, while corn fell 1.24% and soybeans 0.50%.
How far along is Brazil’s soybean planting?
AgRural said 7.3% of the 2026-27 crop was planted by 1 October, against 9% a year earlier.
What is the WASDE report?
WASDE is the US Department of Agriculture’s monthly supply and demand report. The next one is due on Friday 9 October.
What do SOYB, CORN and WEAT track?
They are funds that hold futures for soybeans, corn and wheat, so they differ from cash prices.
Market data: RT; planting: AgRural; USDA calendar: RT
This article was produced by The Rio Times’ automated newsroom system. How we use AI · Report an error · Editorial responsibility: Matthias Camenzind, Editor-in-Chief
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