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
ABIOMED INC COM 003654100 220 1,239 SH   SOLE 1,239 0 0
ALLEGHENY TECHNOLOGIES INC COM 01741R102 639 31,541 SH   DFND 1 31,541 0 0
ALNYLAM PHARMACEUTICALS INC COM 02043Q107 531 6,607 SH   SOLE 6,607 0 0
ALTUS MIDSTREAM CO CL A 02215L100 1,714 605,527 SH   SOLE 605,527 0 0
AMARIN CORP PLC SPONS ADR NEW 023111206 236 15,536 SH   SOLE 15,536 0 0
ANTERO MIDSTREAM CORP COM 03676B102 18,665 2,522,333 SH   DFND 1 2,522,333 0 0
ATLANTICA YIELD PLC SHS G0751N103 13,740 570,370 SH   SOLE 570,370 0 0
BLACK STONE MINERALS L P COM UNIT 09225M101 1,709 120,000 SH   SOLE 120,000 0 0
BP PLC SPONSORED ADR 055622104 10,942 288,020 SH   DFND 1 288,020 0 0
BRIGHAM MINERALS INC CL A COM 10918L103 2,917 146,599 SH   SOLE 146,599 0 0
CABOT OIL & GAS CORP COM 127097103 1,148 65,350 SH   DFND 1 65,350 0 0
CACTUS INC CL A 127203107 846 29,242 SH   DFND 1 29,242 0 0
CANADIAN NAT RES LTD COM 136385101 744 27,937 SH   SOLE 27,937 0 0
CHENIERE ENERGY INC COM NEW 16411R208 73,812 1,170,509 SH   DFND 1 1,170,509 0 0
CHENIERE ENERGY PARTNERS LP COM UNIT 16411Q101 2,512 55,244 SH   SOLE 55,244 0 0
CHEVRON CORP NEW COM 166764100 2,978 25,110 SH   DFND 1 25,110 0 0
CIMAREX ENERGY CO COM 171798101 883 18,411 SH   DFND 1 18,411 0 0
CLEARWAY ENERGY INC CL C 18539C204 10,544 577,766 SH   DFND 1 577,766 0 0
CNX MIDSTREAM PARTNERS LP COM UNIT REPST 12654A101 2,152 152,654 SH   SOLE 152,654 0 0
CONCHO RES INC COM 20605P101 1,163 17,126 SH   DFND 1 17,126 0 0
CONOCOPHILLIPS COM 20825C104 1,077 18,900 SH   DFND 1 18,900 0 0
CRESTWOOD EQUITY PARTNERS LP UNIT LTD PARTNER 226344208 60,922 1,668,637 SH   DFND 1 1,668,637 0 0
CUSHING ETF TRUST ENRGY &MLP ETF 23163L108 255 11,000 SH   SOLE 11,000 0 0
CUSHING ETF TRUST UTILITY & MLP 23163L207 301 11,000 SH   SOLE 11,000 0 0
CUSHING ETF TRUST TRNSPRTN & MLP 23163L306 268 11,000 SH   SOLE 11,000 0 0
CUSHING ETF TRUST ENRGY SC & MLP 23163L405 266 11,000 SH   SOLE 11,000 0 0
CVR ENERGY INC COM 12662P108 4,843 110,000 SH   SOLE 110,000 0 0
CYTOSORBENTS CORP COM NEW 23283X206 356 70,843 SH   SOLE 70,843 0 0
DCP MIDSTREAM LP COM UT LTD PTN 23311P100 40,161 1,532,282 SH   DFND 1 1,532,282 0 0
DIAMONDBACK ENERGY INC COM 25278X109 3,646 40,552 SH   DFND 1 40,552 0 0
DOW INC COM 260557103 10,775 226,097 SH   DFND 1 226,097 0 0
EATON CORP PLC SHS G29183103 999 12,012 SH   DFND 1 12,012 0 0
ENABLE MIDSTREAM PARTNERS LP COM UNIT RP IN 292480100 21,800 1,812,168 SH   DFND 1 1,812,168 0 0
ENBRIDGE INC COM 29250N105 24,719 704,650 SH   DFND 1 704,650 0 0
ENCANA CORP COM 292505104 1,977 429,731 SH   DFND 1 429,731 0 0
ENERGY TRANSFER LP COM UT LTD PTN 29273V100 152,201 11,636,194 SH   DFND 1 11,636,194 0 0
ENLINK MIDSTREAM LLC COM UNIT REP LTD 29336T100 32,970 3,878,875 SH   DFND 1 3,878,875 0 0
ENTERPRISE PRODS PARTNERS L COM 293792107 166,416 5,822,801 SH   DFND 1 5,822,801 0 0
EOG RES INC COM 26875P101 2,039 27,475 SH   DFND 1 27,475 0 0
EQM MIDSTREAM PARTNERS LP UNIT LTD PARTN 26885B100 39,812 1,217,490 SH   DFND 1 1,217,490 0 0
EQUINOR ASA SPONSORED ADR 29446M102 1,281 67,612 SH   DFND 1 67,612 0 0
EQUITRANS MIDSTREAM CORPORAT COM 294600101 2,574 176,926 SH   SOLE 176,926 0 0
EXACT SCIENCES CORP COM 30063P105 643 7,120 SH   SOLE 7,120 0 0
FLEXION THERAPEUTICS INC COM 33938J106 279 20,330 SH   SOLE 20,330 0 0
FTS INTERNATIONAL INC COM 30283W104 184 82,204 SH   DFND 1 82,204 0 0
GASLOG PARTNERS LP UNIT LTD PTNRP Y2687W108 11,021 580,666 SH   DFND 1 580,666 0 0
GENESIS ENERGY L P UNIT LTD PARTN 371927104 38,051 1,772,294 SH   DFND 1 1,772,294 0 0
GOLAR LNG LTD BERMUDA SHS G9456A100 962 74,070 SH   DFND 1 74,070 0 0
GOLAR LNG PARTNERS LP COM UNIT LPI Y2745C102 2,593 270,624 SH   SOLE 270,624 0 0
HALLIBURTON CO COM 406216101 991 52,597 SH   DFND 1 52,597 0 0
HOLLYFRONTIER CORP COM 436106108 1,079 20,108 SH   DFND 1 20,108 0 0
HTG MOLECULAR DIAGNOSTICS IN COM 40434H104 88 132,476 SH   SOLE 132,476 0 0
INGEVITY CORP COM 45688C107 492 5,804 SH   SOLE 5,804 0 0
JACOBS ENGR GROUP INC COM 469814107 2,678 29,270 SH   DFND 1 29,270 0 0
JPMORGAN CHASE FINL CO LLC CUSHING MLP 37 48129G703 2,361 143,000 SH   SOLE 143,000 0 0
KIMBELL RTY PARTNERS LP UNIT 49435R102 7,328 498,138 SH   DFND 1 498,138 0 0
KINDER MORGAN INC DEL COM 49456B101 86,697 4,206,540 SH   DFND 1 4,206,540 0 0
KIRBY CORP COM 497266106 510 6,203 SH   DFND 1 6,203 0 0
KORNIT DIGITAL LTD SHS M6372Q113 294 9,546 SH   SOLE 9,546 0 0
LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 5,991 66,959 SH   DFND 1 66,959 0 0
MAGELLAN MIDSTREAM PRTNRS LP COM UNIT RP LP 559080106 102,620 1,548,515 SH   DFND 1 1,548,515 0 0
MARATHON OIL CORP COM 565849106 982 80,000 SH   DFND 1 80,000 0 0
MARATHON PETE CORP COM 56585A102 1,856 30,555 SH   DFND 1 30,555 0 0
MATADOR RES CO COM 576485205 750 45,343 SH   DFND 1 45,343 0 0
MCDERMOTT INTL INC COM 580037703 156 77,239 SH   DFND 1 77,239 0 0
MPLX LP COM UNIT REP LTD 55336V100 94,034 3,357,166 SH   DFND 1 3,357,166 0 0
NEW FORTRESS ENERGY LLC CL A SHS RP LLC 644393100 1,366 75,780 SH   DFND 1 75,780 0 0
NEXTERA ENERGY INC COM 65339F101 1,080 4,634 SH   SOLE 4,634 0 0
NEXTERA ENERGY PARTNERS LP COM UNIT PART IN 65341B106 60,296 1,141,101 SH   DFND 1 1,141,101 0 0
NGL ENERGY PARTNERS LP COM UNIT REPST 62913M107 2,589 186,105 SH   SOLE 186,105 0 0
NOBLE ENERGY INC COM 655044105 841 37,455 SH   DFND 1 37,455 0 0
NOBLE MIDSTREAM PARTNERS LP COM UNIT REPST 65506L105 2,157 89,410 SH   SOLE 89,410 0 0
NUSTAR ENERGY LP UNIT COM 67058H102 21,872 772,300 SH   DFND 1 772,300 0 0
OCCIDENTAL PETE CORP COM 674599105 8,041 180,825 SH   DFND 1 180,825 0 0
ONEOK INC NEW COM 682680103 155,777 2,113,954 SH   DFND 1 2,113,954 0 0
OSHKOSH CORP COM 688239201 1,157 15,259 SH   DFND 1 15,259 0 0
PARSLEY ENERGY INC CL A 701877102 2,211 131,581 SH   DFND 1 131,581 0 0
PATTERN ENERGY GROUP INC CL A 70338P100 6,117 227,155 SH   SOLE 227,155 0 0
PATTERSON UTI ENERGY INC COM 703481101 579 67,672 SH   DFND 1 67,672 0 0
PBF LOGISTICS LP UNIT LTD PTNR 69318Q104 4,442 210,000 SH   SOLE 210,000 0 0
PEMBINA PIPELINE CORP COM 706327103 73,561 1,984,388 SH   DFND 1 1,984,388 0 0
PHILLIPS 66 COM 718546104 8,708 85,038 SH   DFND 1 85,038 0 0
PHILLIPS 66 PARTNERS LP COM UNIT REP INT 718549207 57,688 1,018,870 SH   DFND 1 1,018,870 0 0
PIONEER NAT RES CO COM 723787107 2,356 18,736 SH   DFND 1 18,736 0 0
PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 98,203 4,732,679 SH   DFND 1 4,732,679 0 0
PLAINS GP HLDGS L P LTD PARTNR INT A 72651A207 34,641 1,631,688 SH   SOLE 1,631,688 0 0
POLARITYTE INC COM 731094108 301 93,059 SH   SOLE 93,059 0 0
RAPID7 INC COM 753422104 543 11,964 SH   SOLE 11,964 0 0
RINGCENTRAL INC CL A 76680R206 673 5,359 SH   SOLE 5,359 0 0
ROSEHILL RES INC CL A 777385105 627 321,721 SH   DFND 1 321,721 0 0
SCHLUMBERGER LTD COM 806857108 740 21,645 SH   DFND 1 21,645 0 0
SELECT ENERGY SVCS INC CL A COM 81617J301 637 73,607 SH   DFND 1 73,607 0 0
SEMGROUP CORP CL A 81663A105 3,174 194,221 SH   SOLE 194,221 0 0
SHELL MIDSTREAM PARTNERS L P UNIT LTD INT 822634101 45,336 2,216,919 SH   DFND 1 2,216,919 0 0
SOUTHWEST AIRLS CO COM 844741108 1,566 28,998 SH   DFND 1 28,998 0 0
SUNCOR ENERGY INC NEW COM 867224107 1,425 45,130 SH   DFND 1 45,130 0 0
SUNOCO LP COM UT REP LP 86765K109 7,234 230,000 SH   SOLE 230,000 0 0
TALLGRASS ENERGY LP CLASS A SHS 874696107 5,491 272,661 SH   DFND 1 272,661 0 0
TARGA RES CORP COM 87612G101 92,219 2,295,722 SH   DFND 1 2,295,722 0 0
TC ENERGY CORP COM 87807B107 62,269 1,202,328 SH   SOLE 1,202,328 0 0
TELADOC HEALTH INC COM 87918A105 716 10,567 SH   SOLE 10,567 0 0
TOTAL S A SPONSORED ADS 89151E109 2,270 43,658 SH   DFND 1 43,658 0 0
TWILIO INC CL A 90138F102 487 4,428 SH   SOLE 4,428 0 0
U S WELL SVCS INC CL A 91274U101 191 87,005 SH   DFND 1 87,005 0 0
UNITED RENTALS INC COM 911363109 789 6,332 SH   DFND 1 6,332 0 0
VALERO ENERGY CORP NEW COM 91913Y100 2,568 30,122 SH   DFND 1 30,122 0 0
VERMILION ENERGY INC COM 923725105 5,313 317,937 SH   DFND 1 317,937 0 0
VIPER ENERGY PARTNERS LP COM UNT RP INT 92763M105 13,796 498,581 SH   DFND 1 498,581 0 0
VIVINT SOLAR INC COM 92854Q106 72 11,034 SH   SOLE 11,034 0 0
WABTEC CORP COM 929740108 1,157 16,096 SH   DFND 1 16,096 0 0
WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 28,107 1,129,266 SH   DFND 1 1,129,266 0 0
WESTLAKE CHEM CORP COM 960413102 508 7,747 SH   DFND 1 7,747 0 0
WILLIAMS COS INC DEL COM 969457100 97,715 4,061,298 SH   DFND 1 4,061,298 0 0
WPX ENERGY INC COM 98212B103 2,838 268,009 SH   DFND 1 268,009 0 0
XYLEM INC COM 98419M100 711 8,926 SH   DFND 1 8,926 0 0