The Archer-Daniels-Midland Co. (ADM) grain facility in Mendota, Illinois, U.S.Shares of Archer-Daniels-Midland plunged 24% on Monday, its biggest one-day drop since 1929, after CFO Vikram Luthar was placed on administrative leave as the company investigates accounting practices at its Nutrition segment. The probe brings more uncertainty to ADM's high-margin Nutrition segment, which is under pressure due to weak demand for meat alternatives and other products as well as downtime at a large soy processing facility. The Nutrition segment, however, has not performed well in recent quarters. "First and foremost, understanding the true scope of potential accounting irregularities and their impact on Nutrition segment revenues/margins will be critical," said Goldman Sachs analyst Adam Samuelson. ADM appointed Ismael Roig, who has been with the company since 2004, as its interim CFO.

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Persons: Archer, Vikram Luthar, Luthar, Goldman Sachs, Adam Samuelson, Ismael Roig Organizations: Daniels, Midland Co, Midland, U.S . Securities, Exchange Commission, SEC, for Research, ADM, BMO, UBS, Bunge Global Locations: Mendota , Illinois, U.S, Chicago