AGCO was born when the US management of the Deutz-Allis corporation bought out the North American side of the company and renamed it AGCO (Allis-Gleaner Company). Tractors are distributed under the AGCO Allis name. AGCO acquired White in 1991, Massey Ferguson in 1994, Fendt in 1997, Caterpillar's Challenger line in 2002, and Valtra (formerly Valmet) in 2002. In 2001, The AGCO White and AGCO Allis names were dropped in favor of the AGCO brand. In 2009, it was announced that the AGCO brand would be phased out leaving the Massey Ferguson and Challenger brands.
AGCO - official site