ONEOK is the general partner and, as of August 21, 2015, owns 41.2 percent of ONEOK Partners, one of the largest publicly traded master limited partnerships, which owns one of the nation’s premier natural gas liquids (NGL) systems, connecting NGL supply in the Mid-Continent, Permian and Rocky Mountain regions with key market centers and is a leader in the gathering, processing, storage and transportation of natural gas in the U.S.