The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8
COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
ALBEMARLE CORP COM 012653101 5,284 100,000 SH   DFND 1 100,000 0 0
ALLIANCE HOLDINGS GP LP COM UNITS LP 01861G100 8,446 163,400 SH   SOLE 163,400 0 0
ALLISON TRANSMISSION HLDGS I COM 01973R101 4,631 145,000 SH   DFND 1 145,000 0 0
ALON USA PARTNERS LP UT LTDPART INT 02052T109 2,778 151,900 SH   DFND 1 151,900 0 0
AMERIGAS PARTNERS L P UNIT L P INT 030975106 3,917 82,050 SH   SOLE 82,050 0 0
ANADARKO PETE CORP COM 032511107 6,534 78,900 SH   DFND 1 78,900 0 0
ANTERO MIDSTREAM PARTNERS LP UNT LTD PARTN 03673L103 3,469 143,400 SH   SOLE 143,400 0 0
ARDMORE SHIPPING CORP COM Y0207T100 1,549 153,854 SH   SOLE 153,854 0 0
ASHLAND INC NEW COM 044209104 593 4,654 SH   SOLE 4,654 0 0
ATLAS RESOURCE PARTNERS LP COM UNT LTD PR 04941A101 6,522 845,972 SH   DFND 1 845,972 0 0
BAKER HUGHES INC COM 057224107 1,151 18,098 SH   SOLE 18,098 0 0
BLUEKNIGHT ENERGY PARTNERS L COM UNIT 09625U109 35,704 4,589,145 SH   DFND 1 4,589,145 0 0
BREITBURN ENERGY PARTNERS LP COM UT LTD PTN 106776107 565 103,192 SH   SOLE 103,192 0 0
BUCKEYE PARTNERS L P UNIT LTD PARTN 118230101 9,221 122,095 SH   SOLE 122,095 0 0
C&J ENERGY SVCS LTD SHS G3164Q101 874 78,556 SH   SOLE 78,556 0 0
CALPINE CORP COM NEW 131347304 8,609 376,470 SH   DFND 1 376,470 0 0
CANADIAN NATL RY CO COM 136375102 5,646 84,430 SH   DFND 1 84,430 0 0
CAPITAL PRODUCT PARTNERS L P COM UNIT LP Y11082107 65,448 6,889,232 SH   DFND 1 6,889,232 0 0
CENOVUS ENERGY INC COM 15135U109 3,207 190,000 SH   DFND 1 190,000 0 0
CENTERPOINT ENERGY INC COM 15189T107 10,466 512,776 SH   DFND 1 512,776 0 0
CHART INDS INC COM PAR $0.01 16115Q308 274 7,825 SH   SOLE 7,825 0 0
CHENIERE ENERGY INC COM NEW 16411R208 33,899 437,975 SH   DFND 1 437,975 0 0
CHENIERE ENERGY PARTNERS LP COM UNIT 16411Q101 7,250 242,000 SH   DFND 1 242,000 0 0
CHEVRON CORP NEW COM 166764100 10,393 99,000 SH   DFND 1 99,000 0 0
COLUMBIA PIPELINE PARTNERS L COM UT REPSTG 198281107 15,710 567,346 SH   SOLE 567,346 0 0
CONCHO RES INC COM 20605P101 354 3,050 SH   SOLE 3,050 0 0
CONE MIDSTREAM PARTNERS LP COM UNIT REPST 206812109 9,527 547,220 SH   SOLE 547,220 0 0
CONOCOPHILLIPS COM 20825C104 7,449 119,642 SH   DFND 1 119,642 0 0
CROSSAMERICA PARTNERS LP UT LTD PTN INT 22758A105 3,023 92,900 SH   SOLE 92,900 0 0
CSX CORP COM 126408103 6,893 208,128 SH   DFND 1 208,128 0 0
CUSHING MLP TOTAL RETURN FD COM SHS 231631102 73 17,941 SH   SOLE 17,941 0 0
CUSHING RTY & INCOME FD COM SH BEN INT 23164R104 64 12,167 SH   SOLE 12,167 0 0
CVR REFNG LP COMUNIT REP LT 12663P107 3,941 190,000 SH   DFND 1 190,000 0 0
DCP MIDSTREAM PARTNERS LP COM UT LTD PTN 23311P100 54,126 1,464,850 SH   DFND 1 1,464,850 0 0
DELEK LOGISTICS PARTNERS LP COM UNT RP INT 24664T103 13,911 319,566 SH   DFND 1 319,566 0 0
DELEK US HLDGS INC COM 246647101 7,468 187,865 SH   DFND 1 187,865 0 0
DEVON ENERGY CORP NEW COM 25179M103 7,948 131,783 SH   DFND 1 131,783 0 0
DHT HOLDINGS INC SHS NEW Y2065G121 722 103,398 SH   SOLE 103,398 0 0
DOMINION MIDSTREAM PARTNERS COM UT REP LTD 257454108 30,227 728,180 SH   SOLE 728,180 0 0
DOMINION RES INC VA NEW COM 25746U109 15,662 220,997 SH   DFND 1 220,997 0 0
DORCHESTER MINERALS LP COM UNIT 25820R105 12,412 545,821 SH   DFND 1 545,821 0 0
DOW CHEM CO COM 260543103 16,136 336,314 SH   DFND 1 336,314 0 0
DU PONT E I DE NEMOURS & CO COM 263534109 2,859 40,000 SH   SOLE 40,000 0 0
EAGLE MATERIALS INC COM 26969P108 5,682 68,000 SH   DFND 1 68,000 0 0
EASTMAN CHEM CO COM 277432100 859 12,407 SH   SOLE 12,407 0 0
ENABLE MIDSTREAM PARTNERS LP COM UNIT RP IN 292480100 25,247 1,539,439 SH   DFND 1 1,539,439 0 0
ENBRIDGE ENERGY MANAGEMENT L SHS UNITS LLI 29250X103 6,564 180,439 SH   SOLE 180,439 0 0
ENBRIDGE ENERGY PARTNERS L P COM 29250R106 77,922 2,163,895 SH   DFND 1 2,163,895 0 0
ENERGY TRANSFER EQUITY L P COM UT LTD PTN 29273V100 182,714 2,883,743 SH   DFND 1 2,883,743 0 0
ENERGY TRANSFER PRTNRS L P UNIT LTD PARTN 29273R109 136,861 2,454,894 SH   DFND 1 2,454,894 0 0
ENLINK MIDSTREAM LLC COM UNIT REP LTD 29336T100 12,476 383,400 SH   SOLE 383,400 0 0
ENLINK MIDSTREAM PARTNERS LP COM UNIT REP LTD 29336U107 105,841 4,278,119 SH   DFND 1 4,278,119 0 0
ENTERPRISE PRODS PARTNERS L COM 293792107 110,923 3,368,448 SH   DFND 1 3,368,448 0 0
EOG RES INC COM 26875P101 9,744 106,271 SH   DFND 1 106,271 0 0
EQT MIDSTREAM PARTNERS LP UNIT LTD PARTN 26885B100 120,908 1,556,900 SH   DFND 1 1,556,900 0 0
EV ENERGY PARTNERS LP COM UNITS 26926V107 15,974 1,198,334 SH   DFND 1 1,198,334 0 0
EXTERRAN PARTNERS LP COM UNITS 30225N105 4,285 171,964 SH   SOLE 171,964 0 0
EXXON MOBIL CORP COM 30231G102 11,356 133,600 SH   DFND 1 133,600 0 0
FLOWSERVE CORP COM 34354P105 3,954 70,000 SH   DFND 1 70,000 0 0
FLUOR CORP NEW COM 343412102 1,143 20,000 SH   SOLE 20,000 0 0
FORESIGHT ENERGY LP COM UNT RP INT 34552U104 251 16,100 SH   SOLE 16,100 0 0
GASLOG LTD SHS G37585109 25,943 1,335,928 SH   DFND 1 1,335,928 0 0
GASLOG PARTNERS LP UNIT LTD PTNRP Y2687W108 8,366 340,078 SH   DFND 1 340,078 0 0
GENESEE & WYO INC CL A 371559105 2,845 29,500 SH   SOLE 29,500 0 0
GENESIS ENERGY L P UNIT LTD PARTN 371927104 72,262 1,537,495 SH   DFND 1 1,537,495 0 0
GOLAR LNG LTD BERMUDA SHS G9456A100 33,381 1,003,032 SH   DFND 1 1,003,032 0 0
GOLAR LNG PARTNERS LP COM UNIT LPI Y2745C102 39,558 1,471,086 SH   DFND 1 1,471,086 0 0
GREENBRIER COS INC COM 393657101 13,192 227,442 SH   DFND 1 227,442 0 0
H & E EQUIPMENT SERVICES INC COM 404030108 242 9,675 SH   SOLE 9,675 0 0
HALLIBURTON CO COM 406216101 681 15,515 SH   SOLE 15,515 0 0
HELIX ENERGY SOLUTIONS GRP I COM 42330P107 387 25,846 SH   SOLE 25,846 0 0
HELMERICH & PAYNE INC COM 423452101 704 10,338 SH   SOLE 10,338 0 0
HOEGH LNG PARTNERS LP COM UNIT LTD Y3262R100 1,114 51,339 SH   DFND 1 51,339 0 0
HOLLYFRONTIER CORP COM 436106108 1,289 32,000 SH   SOLE 32,000 0 0
HUNT J B TRANS SVCS INC COM 445658107 1,059 12,405 SH   SOLE 12,405 0 0
ITT CORP NEW COM NEW 450911201 7,636 191,320 SH   DFND 1 191,320 0 0
KBR INC COM 48242W106 674 46,524 SH   SOLE 46,524 0 0
KINDER MORGAN INC DEL COM 49456B101 214,871 5,108,678 SH   DFND 1 5,108,678 0 0
KIRBY CORP COM 497266106 582 7,753 SH   SOLE 7,753 0 0
KNOT OFFSHORE PARTNERS LP COM UNITS Y48125101 2,106 85,970 SH   SOLE 85,970 0 0
LEGACY RESVS LP UNIT LP INT 524707304 15,812 1,562,434 SH   DFND 1 1,562,434 0 0
LINCOLN ELEC HLDGS INC COM 533900106 3,440 52,605 SH   DFND 1 52,605 0 0
LRR ENERGY LP COM 50214A104 1,417 222,460 SH   DFND 1 222,460 0 0
LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 11,591 132,015 SH   DFND 1 132,015 0 0
MAGELLAN MIDSTREAM PRTNRS LP COM UNIT RP LP 559080106 86,704 1,130,278 SH   DFND 1 1,130,278 0 0
MANITOWOC INC COM 563571108 4,810 223,090 SH   DFND 1 223,090 0 0
MARATHON PETE CORP COM 56585A102 26,441 258,245 SH   DFND 1 258,245 0 0
MARKWEST ENERGY PARTNERS L P UNIT LTD PARTN 570759100 77,297 1,169,382 SH   DFND 1 1,169,382 0 0
MEMORIAL PRODTN PARTNERS LP COM U REP LTD 586048100 19,717 1,216,326 SH   DFND 1 1,216,326 0 0
METHANEX CORP COM 59151K108 1,163 21,710 SH   SOLE 21,710 0 0
MID CON ENERGY PARTNERS LP COM UNIT REPST 59560V109 3,323 597,601 SH   DFND 1 597,601 0 0
MOBILE MINI INC COM 60740F105 2,452 57,500 SH   DFND 1 57,500 0 0
MPLX LP COM UNIT REP LTD 55336V100 35,057 478,528 SH   SOLE 478,528 0 0
NATURAL RESOURCE PARTNERS L COM UNIT L P 63900P103 3,410 503,000 SH   DFND 1 503,000 0 0
NAVIGATOR HOLDINGS LTD SHS Y62132108 2,915 152,600 SH   SOLE 152,600 0 0
NAVIOS MARITIME PARTNERS L P UNIT LPI Y62267102 26,244 2,355,843 SH   DFND 1 2,355,843 0 0
NAVISTAR INTL CORP NEW COM 63934E108 1,153 39,088 SH   SOLE 39,088 0 0
NEFF CORP COM CL A 640094207 4,050 384,231 SH   DFND 1 384,231 0 0
NGL ENERGY PARTNERS LP COM UNIT REPST 62913M107 67,052 2,556,338 SH   DFND 1 2,556,338 0 0
NORTHERN TIER ENERGY LP COM UN REPR PART 665826103 4,182 165,032 SH   SOLE 165,032 0 0
NRG ENERGY INC COM NEW 629377508 7,270 288,579 SH   DFND 1 288,579 0 0
NRG YIELD INC COM CL A 62942X108 5,073 100,000 SH   DFND 1 100,000 0 0
NUSTAR ENERGY LP UNIT COM 67058H102 80,157 1,320,540 SH   DFND 1 1,320,540 0 0
NUSTAR GP HOLDINGS LLC UNIT RESTG LLC 67059L102 4,404 124,400 SH   SOLE 124,400 0 0
OCCIDENTAL PETE CORP DEL COM 674599105 13,965 191,300 SH   DFND 1 191,300 0 0
OLD DOMINION FGHT LINES INC COM 679580100 5,223 67,570 SH   DFND 1 67,570 0 0
ONEOK INC NEW COM 682680103 54,237 1,124,302 SH   DFND 1 1,124,302 0 0
ONEOK PARTNERS LP UNIT LTD PARTN 68268N103 30,480 746,320 SH   DFND 1 746,320 0 0
PACIFIC DRILLING SA LUXEMBOU REG SHS L7257P106 804 206,773 SH   SOLE 206,773 0 0
PHILLIPS 66 COM 718546104 48,133 612,379 SH   DFND 1 612,379 0 0
PHILLIPS 66 PARTNERS LP COM UNIT REP INT 718549207 35,562 503,218 SH   SOLE 503,218 0 0
PIONEER NAT RES CO COM 723787107 8,518 52,096 SH   DFND 1 52,096 0 0
PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 64,633 1,325,265 SH   DFND 1 1,325,265 0 0
PLAINS GP HLDGS L P SHS A REP LTPN 72651A108 77,788 2,741,884 SH   DFND 1 2,741,884 0 0
POLYONE CORP COM 73179P106 11,289 302,255 SH   DFND 1 302,255 0 0
PPG INDS INC COM 693506107 12,534 55,575 SH   DFND 1 55,575 0 0
PPL CORP COM 69351T106 3,366 100,000 SH   SOLE 100,000 0 0
QUANTA SVCS INC COM 74762E102 10,630 372,599 SH   DFND 1 372,599 0 0
REGENCY ENERGY PARTNERS L P COM UNITS L P 75885Y107 83,278 3,641,356 SH   DFND 1 3,641,356 0 0
ROSE ROCK MIDSTREAM L P COM U REP LTD 777149105 16,978 357,432 SH   SOLE 357,432 0 0
ROYAL DUTCH SHELL PLC SPON ADR B 780259107 10,170 170,500 SH   DFND 1 170,500 0 0
RYDER SYS INC COM 783549108 13,998 147,514 SH   DFND 1 147,514 0 0
SAIA INC COM 78709Y105 2,779 62,738 SH   DFND 1 62,738 0 0
SEADRILL PARTNERS LLC COMUNIT REP LB Y7545W109 4,495 382,569 SH   DFND 1 382,569 0 0
SEALED AIR CORP NEW COM 81211K100 10,060 220,816 SH   DFND 1 220,816 0 0
SEMGROUP CORP CL A 81663A105 44,252 544,045 SH   SOLE 544,045 0 0
SEMPRA ENERGY COM 816851109 16,559 151,887 SH   DFND 1 151,887 0 0
SHELL MIDSTREAM PARTNERS L P UNIT LTD INT 822634101 75,316 1,931,167 SH   DFND 1 1,931,167 0 0
SHERWIN WILLIAMS CO COM 824348106 16,815 59,104 SH   DFND 1 59,104 0 0
SOUTHERN CO COM 842587107 2,679 60,500 SH   SOLE 60,500 0 0
SPECTRA ENERGY PARTNERS LP COM 84756N109 3,157 60,950 SH   SOLE 60,950 0 0
SUMMIT MIDSTREAM PARTNERS LP COM UNIT LTD 866142102 3,442 107,009 SH   SOLE 107,009 0 0
SUNOCO LOGISTICS PRTNRS L P COM UNITS 86764L108 89,978 2,176,537 SH   DFND 1 2,176,537 0 0
SUNOCO LP COM U REP LP 86765K109 6,945 135,250 SH   SOLE 135,250 0 0
SWIFT TRANSN CO CL A 87074U101 8,137 312,705 SH   DFND 1 312,705 0 0
TALLGRASS ENERGY PARTNERS LP COM UNIT 874697105 16,071 317,800 SH   SOLE 317,800 0 0
TARGA RES CORP COM 87612G101 123,770 1,292,090 SH   DFND 1 1,292,090 0 0
TARGA RESOURCES PARTNERS LP COM UNIT 87611X105 76,144 1,841,005 SH   DFND 1 1,841,005 0 0
TC PIPELINES LP UT COM LTD PRT 87233Q108 14,720 225,930 SH   SOLE 225,930 0 0
TEEKAY CORPORATION COM Y8564W103 73,832 1,585,410 SH   DFND 1 1,585,410 0 0
TEEKAY LNG PARTNERS L P PRTNRSP UNITS Y8564M105 2,241 60,000 SH   SOLE 60,000 0 0
TEEKAY OFFSHORE PARTNERS L P PARTNERSHIP UN Y8565J101 4,928 233,465 SH   SOLE 233,465 0 0
TESORO CORP COM 881609101 2,282 25,000 SH   SOLE 25,000 0 0
TESORO LOGISTICS LP COM UNIT LP 88160T107 88,660 1,647,958 SH   DFND 1 1,647,958 0 0
U S G CORP COM NEW 903293405 1,201 45,000 SH   DFND 1 45,000 0 0
UNION PAC CORP COM 907818108 10,304 95,130 SH   DFND 1 95,130 0 0
UNITED RENTALS INC COM 911363109 13,702 150,310 SH   DFND 1 150,310 0 0
VALERO ENERGY CORP NEW COM 91913Y100 12,944 203,455 SH   DFND 1 203,455 0 0
VALERO ENERGY PARTNERS LP COM UNT REP LP 91914J102 28,936 597,851 SH   SOLE 597,851 0 0
VANGUARD NAT RES LLC COM UNIT 92205F106 16,356 1,169,951 SH   DFND 1 1,169,951 0 0
VERMILION ENERGY INC COM 923725105 5,511 131,000 SH   SOLE 131,000 0 0
VTTI ENERGY PARTNERS LP COM UNIT RP LT Y9384M101 2,874 115,800 SH   SOLE 115,800 0 0
WABTEC CORP COM 929740108 19,792 208,313 SH   DFND 1 208,313 0 0
WEATHERFORD INTL PLC ORD SHS G48833100 572 46,524 SH   SOLE 46,524 0 0
WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 31,445 524,076 SH   SOLE 524,076 0 0
WESTERN GAS PARTNERS LP COM UNIT LP IN 958254104 56,327 855,391 SH   DFND 1 855,391 0 0
WESTERN REFNG INC COM 959319104 17,223 348,700 SH   DFND 1 348,700 0 0
WESTERN REFNG LOGISTICS LP COM UNIT REP LTP 95931Q205 6,256 215,500 SH   SOLE 215,500 0 0
WESTLAKE CHEM CORP COM 960413102 10,530 146,374 SH   DFND 1 146,374 0 0
WHITING PETE CORP NEW COM 966387102 1,022 33,075 SH   SOLE 33,075 0 0
WILLIAMS COS INC DEL COM 969457100 146,565 2,897,110 SH   DFND 1 2,897,110 0 0
WILLIAMS PARTNERS L P NEW COM UNIT LTD PAR 96949L105 115,853 2,353,786 SH   DFND 1 2,353,786 0 0
WORLD PT TERMS LP UNIT REP LTD PT 98159G107 1,664 101,000 SH   SOLE 101,000 0 0
XPO LOGISTICS INC COM 983793100 10,795 237,411 SH   DFND 1 237,411 0 0