| Blackstone Inc. | 11,918,786 | $576.2m | 1.7% |
| BlackRock, Inc. | 8,595,744 | $415.5m | 0.0% |
| GOLDMAN SACHS GROUP INC | 4,260,188 | $205.9m | 0.0% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3,242,907 | $156.8m | 0.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 2,408,767 | $116.4m | 0.0% |
| STATE STREET CORP | 1,998,756 | $96.6m | 0.0% |
| CITADEL ADVISORS LLC | 1,835,829 | $88.7m | 0.0% |
| Invesco Ltd. | 1,834,178 | $88.7m | 0.0% |
| CUSHING ASSET MANAGEMENT, LP dba NXG INVESTMENT MANAGEMENT | 1,752,000 | $84.7m | 3.8% |
| COHEN & STEERS, INC. | 1,516,790 | $73.3m | 0.1% |
| Clearbridge Investments, LLC | 1,419,099 | $68.6m | 0.1% |
| GEODE CAPITAL MANAGEMENT, LLC | 1,327,945 | $64.2m | 0.0% |
| NEUBERGER BERMAN GROUP LLC | 1,256,175 | $60.8m | 0.0% |
| PRINCIPAL FINANCIAL GROUP INC | 1,188,389 | $57.4m | 0.0% |
| UBS Group AG | 1,155,740 | $55.9m | 0.0% |
| Yaupon Capital Management LP | 1,002,184 | $48.4m | 1.0% |
| BANK OF AMERICA CORP /DE/ | 1,001,272 | $48.4m | 0.0% |
| BARCLAYS PLC | 978,263 | $47.3m | 0.0% |
| Zimmer Partners, LP | 838,050 | $40.5m | 0.9% |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 824,217 | $39.8m | 0.1% |
| RR Advisors, LLC | 797,999 | $38.6m | 11.2% |
| DIMENSIONAL FUND ADVISORS LP | 723,002 | $35.0m | 0.0% |
| Advisors Capital Management, LLC | 689,811 | $33.3m | 0.4% |
| CITIGROUP INC | 658,818 | $31.8m | 0.0% |
| AMERIPRISE FINANCIAL INC | 651,900 | $31.5m | 0.0% |