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
ALLIANCE RES PARTNER L P UT LTD PART 01877R108 25,690 1,400,000 SH   DFND 1 1,400,000 0 0
AMERICAN AIRLS GROUP INC COM 02376R102 2,559 67,423 SH   DFND 1 67,423 0 0
ANADARKO PETE CORP COM 032511107 494 6,750 SH   SOLE 6,750 0 0
ANDEAVOR LOGISTICS LP COM UNIT LP INT 03350F106 1,151 27,052 SH   SOLE 27,052 0 0
ANTERO MIDSTREAM GP LP COM SHS REPSTG 03675Y103 56,801 3,011,703 SH   DFND 1 2 3,011,703 0 0
ANTERO MIDSTREAM PARTNERS LP UNT LTD PARTN 03673L103 49,239 1,668,002 SH   DFND 1 2 1,668,002 0 0
ANTERO MIDSTREAM PARTNERS LP UNT LTD PARTN 03673L103 96 20,000 SH Call SOLE 20,000 0 0
ANTERO RES CORP COM 03674X106 3,765 176,353 SH   DFND 1 176,353 0 0
APERGY CORP COM 03755L104 3,147 75,380 SH   DFND 1 75,380 0 0
ATLANTICA YIELD PLC SHS G0751N103 1,869 92,615 SH   SOLE 92,615 0 0
AVANGRID INC COM 05351W103 2,121 40,079 SH   SOLE 40,079 0 0
BASIC ENERGY SVCS INC NEW COM NEW 06985P209 1,925 173,255 SH   DFND 1 173,255 0 0
BOARDWALK PIPELINE PARTNERS UT LTD PARTNER 096627104 613 721,500 SH Call SOLE 721,500 0 0
BOEING CO COM 097023105 2,727 8,127 SH   DFND 1 8,127 0 0
BP PLC SPONSORED ADR 055622104 11,393 249,520 SH   DFND 1 249,520 0 0
BROOKFIELD RENEWABLE PARTNER PARTNERSHIP UNIT G16258108 1,598 53,191 SH   SOLE 53,191 0 0
C&J ENERGY SVCS INC NEW COM 12674R100 10,581 448,342 SH   DFND 1 448,342 0 0
CABOT OIL & GAS CORP COM 127097103 3,967 166,685 SH   DFND 1 166,685 0 0
CALLON PETE CO DEL COM 13123X102 4,556 424,181 SH   DFND 1 424,181 0 0
CANADIAN NAT RES LTD COM 136385101 967 26,805 SH   DFND 1 26,805 0 0
CENTENNIAL RESOURCE DEV INC CL A 15136A102 5,074 280,956 SH   DFND 1 280,956 0 0
CHENIERE ENERGY INC COM NEW 16411R208 83,755 1,284,776 SH   DFND 1 1,284,776 0 0
CHENIERE ENERGY PARTNERS LP COM UNIT 16411Q101 2,789 77,590 SH   DFND 2 77,590 0 0
CHENIERE ENERGY PTNRS LP HLD COM REP LLC IN 16411W108 3,294 104,750 SH   SOLE 104,750 0 0
CHEVRON CORP NEW COM 166764100 2,922 23,110 SH   DFND 1 23,110 0 0
CIMAREX ENERGY CO COM 171798101 1,964 19,302 SH   DFND 1 19,302 0 0
CNX MIDSTREAM PARTNERS LP COM UNIT REPST 12654A101 37,364 1,926,964 SH   DFND 1 1,926,964 0 0
CONCHO RES INC COM 20605P101 2,269 16,400 SH   DFND 1 16,400 0 0
CRESTWOOD EQUITY PARTNERS LP UNIT LTD PARTNER 226344208 53,794 1,694,300 SH   DFND 1 1,694,300 0 0
CVR ENERGY INC COM 12662P108 9,364 253,153 SH   DFND 1 253,153 0 0
DASEKE INC COM 23753F107 2,812 283,218 SH   DFND 1 283,218 0 0
DCP MIDSTREAM LP COM UT LTD PTN 23311P100 99,286 2,510,397 SH   DFND 1 2 2,510,397 0 0
DELEK US HLDGS INC NEW COM 24665A103 60 48,000 SH Call SOLE 48,000 0 0
DEVON ENERGY CORP NEW COM 25179M103 5,973 135,871 SH   DFND 1 135,871 0 0
DOMINION ENERGY INC COM 25746U109 7,664 112,405 SH   SOLE 112,405 0 0
DOWDUPONT INC COM 26078J100 4,285 65,000 SH   SOLE 65,000 0 0
DUKE ENERGY CORP NEW COM NEW 26441C204 2,768 35,000 SH   SOLE 35,000 0 0
EATON CORP PLC SHS G29183103 8,826 118,089 SH   DFND 1 118,089 0 0
EMERSON ELEC CO COM 291011104 11,891 171,988 SH   DFND 1 171,988 0 0
ENABLE MIDSTREAM PARTNERS LP COM UNIT RP IN 292480100 45,231 2,643,557 SH   DFND 1 2 2,643,557 0 0
ENBRIDGE INC COM 29250N105 5,387 150,950 SH   SOLE 150,950 0 0
ENERGY TRANSFER EQUITY L P COM UT LTD PTN 29273V100 140,019 8,117,023 SH   DFND 1 2 8,117,023 0 0
ENERGY TRANSFER PARTNERS LP UNIT LTD PRT INT 29278N103 245,650 12,901,771 SH   DFND 1 2 12,901,771 0 0
ENLINK MIDSTREAM LLC COM UNIT REP LTD 29336T100 54,446 3,309,766 SH   DFND 1 2 3,309,766 0 0
ENLINK MIDSTREAM PARTNERS LP COM UNIT REP LTD 29336U107 75,297 4,848,482 SH   DFND 1 2 4,848,482 0 0
ENTERPRISE PRODS PARTNERS L COM 293792107 198,625 7,178,339 SH   DFND 1 2 7,178,339 0 0
ENTERPRISE PRODS PARTNERS L COM 293792107 253 1,328,000 SH Call SOLE 1,328,000 0 0
EOG RES INC COM 26875P101 3,688 29,636 SH   DFND 1 29,636 0 0
EQT CORP COM 26884L109 4,812 87,200 SH   SOLE 87,200 0 0
EQT GP HLDGS LP COM UNIT REP 26885J103 31,095 1,322,644 SH   DFND 1 2 1,322,644 0 0
EQT MIDSTREAM PARTNERS LP UNIT LTD PARTN 26885B100 28,997 562,058 SH   DFND 1 2 562,058 0 0
EVERSOURCE ENERGY COM 30040W108 3,033 51,750 SH   SOLE 51,750 0 0
FIRSTENERGY CORP COM 337932107 2,514 70,000 SH   SOLE 70,000 0 0
GARDNER DENVER HLDGS INC COM 36555P107 2,944 100,162 SH   DFND 1 100,162 0 0
GASLOG PARTNERS LP UNIT LTD PTNRP Y2687W108 13,229 554,687 SH   DFND 1 554,687 0 0
GOLAR LNG LTD BERMUDA SHS G9456A100 12,983 440,713 SH   DFND 1 440,713 0 0
GOLAR LNG PARTNERS LP COM UNIT LPI Y2745C102 35,388 2,288,974 SH   DFND 1 2,288,974 0 0
H & E EQUIPMENT SERVICES INC COM 404030108 1,538 40,896 SH   DFND 1 40,896 0 0
HUB GROUP INC CL A 443320106 4,176 83,851 SH   DFND 1 83,851 0 0
JACOBS ENGR GROUP INC DEL COM 469814107 8,493 133,762 SH   DFND 1 133,762 0 0
JAGGED PEAK ENERGY INC COM 47009K107 2,400 184,308 SH   DFND 1 184,308 0 0
JPMORGAN CHASE FINL CO LLC CUSHING MLP 37 48129G703 3,858 210,000 SH   SOLE 210,000 0 0
KEANE GROUP INC COM 48669A108 8,965 655,791 SH   DFND 1 655,791 0 0
KINDER MORGAN INC DEL COM 49456B101 136,679 7,735,082 SH   DFND 1 2 7,735,082 0 0
KINDER MORGAN INC DEL PFD SER A 49456B200 2,184 63,000 SH   DFND 1 63,000 0 0
KIRBY CORP COM 497266106 3,535 42,288 SH   DFND 1 42,288 0 0
KNIGHT SWIFT TRANSN HLDGS IN CL A 499049104 11,484 300,556 SH   DFND 1 300,556 0 0
LIBERTY OILFIELD SVCS INC COM CL A 53115L104 3,122 166,796 SH   DFND 1 166,796 0 0
LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 4,442 40,440 SH   SOLE 40,440 0 0
MAGELLAN MIDSTREAM PRTNRS LP COM UNIT RP LP 559080106 61,442 889,439 SH   DFND 1 2 889,439 0 0
MANITOWOC CO INC COM NEW 563571405 2,852 110,270 SH   DFND 1 110,270 0 0
MARATHON PETE CORP COM 56585A102 3,965 56,510 SH   SOLE 56,510 0 0
MCDERMOTT INTL INC COM 580037703 3,326 169,274 SH   DFND 1 169,274 0 0
MPLX LP COM UNIT REP LTD 55336V100 146,787 4,299,568 SH   DFND 1 2 4,299,568 0 0
NEWFIELD EXPL CO COM 651290108 7,414 245,100 SH   DFND 1 245,100 0 0
NEXTERA ENERGY INC COM 65339F101 3,634 21,758 SH   SOLE 21,758 0 0
NEXTERA ENERGY PARTNERS LP COM UNIT PART IN 65341B106 67,115 1,438,081 SH   DFND 1 1,438,081 0 0
NGL ENERGY PARTNERS LP COM UNIT REPST 62913M107 22,428 1,794,211 SH   DFND 1 1,794,211 0 0
NOBLE MIDSTREAM PARTNERS LP COM UNIT REPST 65506L105 55,612 1,089,151 SH   DFND 1 1,089,151 0 0
NRG YIELD INC CL C 62942X405 8,435 490,427 SH   SOLE 490,427 0 0
NUSTAR ENERGY LP UNIT COM 67058H102 31,710 1,400,000 SH   DFND 1 1,400,000 0 0
NUSTAR GP HOLDINGS LLC UNIT RESTG LLC 67059L102 5,690 458,900 SH   SOLE 458,900 0 0
OCCIDENTAL PETE CORP DEL COM 674599105 2,469 29,507 SH   DFND 1 29,507 0 0
OLD DOMINION FGHT LINES INC COM 679580100 2,788 18,716 SH   DFND 1 18,716 0 0
ONEOK INC NEW COM 682680103 134,643 1,928,154 SH   DFND 1 2 1,928,154 0 0
OSHKOSH CORP COM 688239201 4,167 59,260 SH   DFND 1 59,260 0 0
PARSLEY ENERGY INC CL A 701877102 9,614 317,487 SH   DFND 1 317,487 0 0
PATTERSON UTI ENERGY INC COM 703481101 2,151 119,480 SH   DFND 1 119,480 0 0
PEMBINA PIPELINE CORP COM 706327103 50,041 1,446,283 SH   DFND 1 1,446,283 0 0
PHILLIPS 66 COM 718546104 8,147 72,540 SH   SOLE 72,540 0 0
PHILLIPS 66 PARTNERS LP COM UNIT REP INT 718549207 85,953 1,683,380 SH   DFND 1 2 1,683,380 0 0
PIONEER NAT RES CO COM 723787107 2,942 15,548 SH   DFND 1 15,548 0 0
PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 93,763 3,966,304 SH   DFND 1 2 3,966,304 0 0
PLAINS GP HLDGS L P LTD PARTNR INT A 72651A207 54,293 2,270,705 SH   DFND 1 2,270,705 0 0
PPL CORP COM 69351T106 9,819 343,923 SH   DFND 1 343,923 0 0
PROPETRO HLDG CORP COM 74347M108 4,262 271,836 SH   DFND 1 271,836 0 0
QUANTA SVCS INC COM 74762E102 5,309 158,967 SH   DFND 1 158,967 0 0
ROCKWELL AUTOMATION INC COM 773903109 4,371 26,295 SH   DFND 1 26,295 0 0
ROYAL DUTCH SHELL PLC SPONS ADR A 780259206 9,857 142,378 SH   DFND 1 142,378 0 0
RPC INC COM 749660106 3,387 232,433 SH   DFND 1 232,433 0 0
RSP PERMIAN INC COM 74978Q105 2,318 52,659 SH   DFND 1 52,659 0 0
RUSH ENTERPRISES INC CL A 781846209 3,211 74,017 SH   DFND 1 74,017 0 0
SANCHEZ MIDSTREAM PARTNERS L COM UNITS REP B 79971C201 236 20,000 SH   SOLE 20,000 0 0
SEMGROUP CORP CL A 81663A105 40,299 1,586,563 SH   DFND 1 2 1,586,563 0 0
SEMPRA ENERGY COM 816851109 1,742 15,000 SH   SOLE 15,000 0 0
SHELL MIDSTREAM PARTNERS L P UNIT LTD INT 822634101 34,202 1,542,030 SH   DFND 1 2 1,542,030 0 0
SOUTHWEST AIRLS CO COM 844741108 5,598 110,024 SH   DFND 1 110,024 0 0
STANLEY BLACK & DECKER INC COM 854502101 2,847 21,437 SH   DFND 1 21,437 0 0
SUMMIT MIDSTREAM PARTNERS LP COM UNIT LTD 866142102 19,714 1,280,108 SH   DFND 1 2 1,280,108 0 0
SUNCOR ENERGY INC NEW COM 867224107 3,789 93,130 SH   DFND 1 93,130 0 0
SUNOCO LP COM U REP LP 86765K109 4,493 180,000 SH   SOLE 180,000 0 0
TALLGRASS ENERGY GP LP SHS CL A 874696107 1,509 68,100 SH   SOLE 68,100 0 0
TARGA RES CORP COM 87612G101 179,866 3,634,399 SH   DFND 1 2 3,634,399 0 0
TECHNIPFMC PLC COM G87110105 7,872 248,002 SH   DFND 1 248,002 0 0
TELLURIAN INC NEW COM 87968A104 4,105 493,401 SH   DFND 1 493,401 0 0
TOTAL S A SPONSORED ADR 89151E109 3,007 49,658 SH   DFND 1 49,658 0 0
TRANSCANADA CORP COM 89353D107 9,059 209,700 SH   SOLE 209,700 0 0
TRANSMONTAIGNE PARTNERS L P COM UNIT L P 89376V100 357 9,700 SH   SOLE 9,700 0 0
TRINITY INDS INC COM 896522109 3,689 107,689 SH   DFND 1 107,689 0 0
UNITED RENTALS INC COM 911363109 11,165 75,631 SH   DFND 1 75,631 0 0
UNIVAR INC COM 91336L107 2,754 104,943 SH   DFND 1 104,943 0 0
VALERO ENERGY CORP NEW COM 91913Y100 4,152 37,462 SH   DFND 1 37,462 0 0
VALERO ENERGY PARTNERS LP COM UNT REP LP 91914J102 27,382 719,257 SH   DFND 1 719,257 0 0
VERMILION ENERGY INC COM 923725105 6,750 187,437 SH   DFND 1 187,437 0 0
VIPER ENERGY PARTNERS LP COM UNT RP INT 92763M105 10,274 321,954 SH   DFND 1 321,954 0 0
VULCAN MATLS CO COM 929160109 2,876 22,285 SH   DFND 1 22,285 0 0
WEATHERFORD INTL PLC ORD SHS G48833100 3,762 1,143,518 SH   DFND 1 1,143,518 0 0
WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 33,048 924,419 SH   DFND 1 924,419 0 0
WESTERN GAS PARTNERS LP COM UNIT LP IN 958254104 77,238 1,596,152 SH   DFND 1 2 1,596,152 0 0
WILLIAMS COS INC DEL COM 969457100 77,712 2,866,545 SH   DFND 1 2 2,866,545 0 0
WILLIAMS PARTNERS L P NEW COM UNIT LTD PAR 96949L105 150,084 3,697,569 SH   DFND 1 2 3,697,569 0 0
WPX ENERGY INC COM 98212B103 1,190 66,000 SH   DFND 1 66,000 0 0
XPO LOGISTICS INC COM 983793100 10,774 107,549 SH   DFND 1 107,549 0 0
XYLEM INC COM 98419M100 5,938 88,128 SH   DFND 1 88,128 0 0