Alcoa is a global leader in lightweight metals technology, engineering and manufacturing. It specializes in products made of aluminium, titanium and nickel. Their products are used in wide variety of applications, including aircraft, automobiles, commercial transportation and packaging. As of 2016, Alcoa has split into two publicly traded entities. Alcoa will operate as an aluminum commodity business, while Arconic will now run manufacturing operations. The company has corporate headquarters in New York City.