ONEOK Closes $9 Billion Apollo Minority Equity Deal
ONEOK finalizes a $9 billion minority equity investment from Apollo-managed funds, marking a major capital infusion for the Tulsa-based pipeline giant.
ONEOK, Inc. officially closed a $9 billion minority equity investment from funds and affiliates managed by Apollo on September 10, 2026, the Tulsa, Oklahoma-based midstream energy company announced. The deal, which had been previously disclosed, represents one of the largest private equity commitments in the pipeline sector in recent memory.
The transaction pairs ONEOK — a major natural gas and natural gas liquids infrastructure operator traded on the NYSE under the ticker OKE — with Apollo, one of the world's largest alternative asset managers, listed on the NYSE under APO. Apollo's involvement signals strong institutional confidence in midstream energy infrastructure at a time when demand for reliable energy transport networks remains elevated.
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Minority equity investments of this scale typically allow the receiving company to raise substantial capital without surrendering operational control, giving ONEOK financial flexibility to pursue expansion projects, reduce debt, or fund acquisitions. While ONEOK has not detailed the precise use of proceeds in this announcement, deals of this structure in the energy sector frequently support long-term infrastructure buildout.
The closing marks the formal completion of a process that was already underway, transitioning the agreement from a signed commitment to an executed financial reality. Investors and analysts in the midstream space will likely watch closely for any strategic announcements ONEOK makes in connection with the newly secured capital in the months ahead.
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