Gruma SAB e CV (NYSE: GMK, BMV: Gruma) is the largest manufacturer of corn flour and tortillas in the world. Its brand names include Mission (Misión in Mexico), Maseca, and Guerrero. Founded in 1949 as "Molinos Azteca, S.A.", the company is now based in Monterrey, Mexico and has subsidiaries in the United States, China, England, Central America, and Venezuela. In the United States, Gruma is headquartered in Irving, Texas