Caterpillar Inc. (NYSE: CAT), also known as "CAT", designs, manufactures and sells machines and engines, and sells financial products to customers through a global distribution network. Caterpillar is the world's largest manufacturer of construction and mining equipment, diesel and natural gas engines, and industrial gas turbines. Caterpillar's total assets exceed US$70 billion, and in 2009 it ranked first in the Fortune 500 industry. Caterpillar stock is a member of the Dow Jones Industrial Average. Caterpillar traces its history back to 1925, when it merged with the Holt Manufacturing Company and the C.L. Best Tractor Company to create a new entity, the California-based Caterpillar Tractor Company. In 1986, the company was reorganized as a Delaware corporation and assumed its current name: Caterpillar Inc. Caterpillar is headquartered in Peoria, Illinois, USA. Caterpillar Machinery's well-known logos are its trademarks "Caterpillar Yellow" and the "CAT" trademark.