NOTE: Friday is first notice day for deliveries against CBOT October soymeal and soyoil futures.
Also on Friday, the US Department of Agriculture is set to release its quarterly US grain stocks and annual small grains reports.
WHEAT - Steady to down 1 cent per bushel Lower on technical selling and profit-taking following Tuesday's 2 percent climb. Concerns about excessive rains in eastern Australia lend support, but plentiful global wheat supplies continue to hang over the market.
Traders adjusting positions ahead of Friday's USDA quarterly stocks report.
CBOT December soft red winter wheat last down 1-1/4 cents at $4.02-3/4 per bushel; K.C. December hard red winter wheat down 1 cent at $4.18-1/4; MGEX December spring wheat down 1-1/4 cents at $5.01-1/2.
CORN - Down 1 to 2 cents per bushel Lower but continuing in a sideways pattern overnight as brokers square positions ahead of the USDA's quarterly stocks report on Friday. Additional pressure from the expanding US harvest. But news of a large sale of US corn to Mexico may lend support.
The USDA said private exporters in the last day sold 1,577,340 tonnes of US corn to Mexico, including 1,036,320 tonnes for 2016/17 delivery and 541,020 tonnes for 2017/18.
China will impose anti-subsidy duties of between 10 and 10.7 percent on imports of US distillers' dried grains (DDGS), the Commerce Ministry said in a preliminary ruling.
The move was widely expected after the government announced a similar move on anti-dumping duties last week.
China's National Grain Trade Center reported sales of 65,883 tonnes of 2014 corn at a state reserves auction, representing about 6 percent of the 1.1 million tonnes of corn available.
CBOT December corn last down 1-1/2 cents at $3.30-1/4 per bushel.
SOYBEANS - Down 4 to 6 cents per bushel Lower on technical selling and profit-taking after Tuesday's rebound from a five-month low in the November contract.
Anecdotal reports of large yields early in the harvest add pressure, raising concerns that the USDA might raise its soy yield estimate next month.
Market underpinned by export demand for US supplies.
The USDA said private exporters sold 133,000 tonnes of US soybeans to China and 211,171 tonnes to unknown destinations, all for 2016/17 delivery.
Malaysian palm oil futures fell, tracking lower rival oils and as weaker exports weighed on market sentiment despite expectations of improved demand from India.
CBOT November soybeans last down 5-3/4 cents at $9.46-3/4 per bushel.