Green Plains, a major ethanol producer has filed a class action suit in U.S. District Court of Nebraska claiming ADM has deliberately manipulated ethanol prices.

The complaint alleges that ADM sold ethanol at low prices thirty minutes ahead of the close of daily trading.  It is also alleged that ADM depressed prices at the Argo terminal by consigning an inordinate number of barges to the facility thus interfering with competitors and distorting spot prices and futures.

In September 2019, AOT Holdings in Switzerland filed a lawsuit in a Federal court in Illinois alleging non-competitive action by ADM.