| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | KAYNE ANDERSON CAPITAL ADVISORS, L.P. | 6,936,735 | 5.10 | $321,101,463 | 30-Sep-09 | | TORTOISE CAPITAL ADVISORS, LLC | 3,109,583 | 2.28 | $143,942,597 | 30-Sep-09 | | MORGAN STANLEY | 2,331,552 | 1.71 | $107,927,542 | 30-Sep-09 | | MERRILL LYNCH & CO., INC. | 1,996,814 | 1.47 | $92,432,520 | 30-Sep-09 | | Argyll Research, LLC | 1,995,000 | 1.47 | $92,348,550 | 30-Sep-09 | | Perkins Investment Management, LLC | 1,835,822 | 1.35 | $84,980,200 | 30-Sep-09 | | GOLDMAN SACHS GROUP INC | 1,721,122 | 1.26 | $79,670,737 | 30-Sep-09 | | RR Advisors, LLC | 1,701,000 | 1.25 | $78,739,290 | 30-Sep-09 | | FIDUCIARY ASSET MANAGEMENT, LLC | 1,301,588 | .96 | $60,250,508 | 30-Sep-09 | | SAROFIM, FAYEZ | 1,260,600 | .93 | $53,638,530 | 30-Jun-09 |
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| Holder | Shares | % Out | Value* | Reported | | JANUS PERKINS MID CAP VALUE FUND | 1,650,000 | 1.21 | $76,378,500 | 30-Sep-09 | | TORTOISE ENERGY INFRASTRUCTURE CORP | 1,167,300 | .86 | $55,376,712 | 31-Aug-09 | | OPPENHEIMER MAIN STREET FUND | 878,026 | .64 | $41,653,553 | 31-Aug-09 | | Tortoise Energy Capital Corporation | 862,684 | .63 | $40,925,728 | 31-Aug-09 | | Fiduciary/Claymore MLP Opportunity Fund | 607,851 | .45 | $28,836,451 | 31-Aug-09 | | ROYCE TOTAL RETURN FUND | 281,530 | .21 | $11,979,101 | 30-Jun-09 | | OPPENHEIMER MAIN STREET OPPORTUNITIES FUND | 275,537 | .20 | $13,324,969 | 31-Jul-09 | | ENERGY INCOME & GROWTH FUND | 235,921 | .17 | $11,192,092 | 31-Aug-09 | | MLP & Strategic Equity Fd | 235,149 | .17 | $11,371,805 | 31-Jul-09 | | Blackrock Energy & Resource Trust (BGR) | 220,400 | .16 | $10,658,544 | 31-Jul-09 |
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Value shown is computed using the security's price on the report date given.
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