| CHICKASAW CAPITAL MANAGEMENT LLC | 14,477,626 | $176,917 | 9.44% |
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| Fractal Investments LLC | 2,177,607 | $26,610,358 | 5.47% |
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| ALPS ADVISORS INC | 42,389,633 | $518,001,315 | 4.30% |
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| INFRASTRUCTURE CAPITAL ADVISORS, LLC | 2,452,833 | $29,973,619 | 3.43% |
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| CUSHING ASSET MANAGEMENT, LP dba NXG INVESTMENT MANAGEMENT | 2,715,107 | $33,178,607 | 3.36% |
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| NBW CAPITAL LLC | 1,067,788 | $13,048,369 | 3.20% |
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| TORTOISE CAPITAL ADVISORS, L.L.C. | 16,960,443 | $207,256,613 | 3.16% |
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| SIR Capital Management, L.P. | 2,100,169 | $25,664,065 | 3.05% |
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| Palo Duro Investment Partners, LP | 568,011 | $6,941,094 | 1.91% |
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| Aventail Capital Group, LP | 1,770,946 | $21,640,960 | 1.51% |
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| SL ADVISORS, LLC | 70,812 | $866,479 | 1.17% |
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| Tortoise Index Solutions, LLC | 450,683 | $5,507,346 | 1.14% |
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| MILLER HOWARD INVESTMENTS INC /NY | 2,316,029 | $28,301,870 | 1.04% |
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| EAGLE GLOBAL ADVISORS LLC | 1,131,096 | $13,821,993 | 0.90% |
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| Pinnacle Holdings, LLC | 147,938 | $1,807,804 | 0.85% |
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| KAYNE ANDERSON CAPITAL ADVISORS LP | 1,749,100 | $21,374,002 | 0.66% |
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| EVERGREEN CAPITAL MANAGEMENT LLC | 999,802 | $12,217,581 | 0.54% |
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| Olympiad Research LP | 40,494 | $494,837 | 0.48% |
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| Hodges Capital Management Inc. | 265,602 | $3,246 | 0.38% |
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| BASSO CAPITAL MANAGEMENT, L.P. | 25,000 | $305,500 | 0.34% |
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