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· November 11, 2021. ArcelorMittal reports third quarter 2021 results . Luxembourg, November 11, 2021 ArcelorMittal (referred to as "ArcelorMittal" or the "Company") (MT (New York, Amsterdam, Paris, Luxembourg), MTS (Madrid)), the world's leading integrated steel and mining company, today announced results[1],[2] for the threemonths and ninemonths period ended .