CBOT soybean futures closed lower on Wednesday, mainly dragged down by long liquidation and profit-taking. The market is focused on the USDA supply and demand report due later this week. Analysts on average expect U.S. soybean yield to be lowered to 52.5 bushels per acre, slightly below the August forecast of 52.7 bushels per acre; U.S. soybean production is estimated at 4.501 billion bushels, with a forecast range of 4.393-4.572 billion bushels; U.S. soybean ending stocks for 2025/26 are projected at 317 million bushels, and 298 million bushels for 2026/27. This report will include field survey data for the first time, providing key reference significance for assessing the actual impact of summer heat and drought on crops. In South America, the Buenos Aires Grain Exchange said on Wednesday that Argentina's 2026/27 soybean planting area is expected to increase by 1.2% to 17 million hectares, as farmers in northern regions are shifting from corn to soybeans.