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European importers reported Argentine soybean meal shipments containing traces of the GMO event HB4, which is not authorized in the EU. The reports triggered rejection fears and pushed CBOT soybean futures nearly 3% higher on April 27.
Argentine Up River meal basis fell to a two-month low at a $7/short ton discount to CBOT.
Possible rejections of Argentine meal, the world's largest meal export flow, would shift EU demand toward US meal and widen Argentine export discounts. Buyers should expect firmer CBOT meal and soybean prices and weaker South American basis.
spglobal.comJose Roberto Gomes, Nanditha Kinavoor madathil, Elizabeth Machuca, Paola CaballerosApr 28, 2026After 342 past bullish trade events, Soybean Meal moved a median +0.1% over 5 sessions (51% higher; middle half -1.1% to +2.6%), and +0.6% over 20.
After 696 past bullish trade events, Soybeans moved a median +0.3% over 5 sessions (54% higher; middle half -1.3% to +1.9%), and +0.7% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.
EU detection of unauthorized HB4 GMO traces in Argentine meal raised rejection fears and cut Argentine supply availability, driving CBOT soybean and meal futures about 3% higher on April 27.
