On June 30, 2017, ONEOK, Inc. completed the acquisition of all outstanding common units of ONEOK Partners, L.P. it did not previously own. The combined company, with an enterprise value of more than $30 billion, will continue to operate as one of the nation’s largest midstream service providers.
As of July 1, 2017, common units of ONEOK Partners are no longer publicly traded. Shares of ONEOK, Inc. are publicly traded on the New York Stock Exchange under the trading symbol "OKE".