CF Industries Holdings Inc.

CF Industries Holdings, through its subsidiaries, is a global leader in nitrogen fertilizer manufacturing and distribution, serving both agricultural and industrial customers. CF was founded in 1946 as a cooperative fertilizer brokerage, went public in 2005, and in 2010 acquired Terra Industries. The company is headquartered in Deerfield, a suburb of Chicago, and in its 2013 fiscal year, generated $2.7 billion of EBITDA, which was 49% of revenue for the year.