BlackRock’s investment in ONEOK is growing

A filing with the Securities and Exchange Commission this week shows a New York investment firm owns more than 10% of the shares in Tulsa-based ONEOK.

The filing was made Tuesday by ONEOK and indicated BlackRock Inc. now owns 10.35% of the company’s shares.

Its total ownership is 42,675,245 shares while its sole voting power constitutes 38,753,006 shares in ONEOK.