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
21VIANET GROUP INC SPONSORED ADS A 90138A103 207 28,500 SH   SOLE 28,500 0 0
ABIOMED INC COM 003654100 220 1,287 SH   SOLE 1,287 0 0
ALLEGHENY TECHNOLOGIES INC COM 01741R102 565 27,332 SH   DFND 1 27,332 0 0
ALNYLAM PHARMACEUTICALS INC COM 02043Q107 772 6,706 SH   SOLE 6,706 0 0
ALPS ETF TR ALERIAN MLP 00162Q866 2,000 235,274 SH   DFND 2 235,274 0 0
ALPS ETF TR ALERIAN MLP 00162Q866 125 600,000 SH Call SOLE 600,000 0 0
ALTUS MIDSTREAM CO CL A 02215L100 1,282 448,098 SH   DFND 2 3 448,098 0 0
AMARIN CORP PLC SPONS ADR NEW 023111206 333 15,536 SH   SOLE 15,536 0 0
AMERICAN ELEC PWR CO INC COM 025537101 202 2,137 SH   SOLE 2,137 0 0
AMERICAN TOWER CORP NEW COM 03027X100 391 1,702 SH   SOLE 1,702 0 0
AMERICAN WTR WKS CO INC NEW COM 030420103 314 2,560 SH   DFND 1 2,545 0 15
ANTERO MIDSTREAM CORP COM 03676B102 26,510 3,492,722 SH   DFND 1 2 3 3,492,722 0 0
AQUA AMERICA INC COM 03836W103 209 4,448 SH   DFND 1 4,411 0 37
AQUAVENTURE HLDGS LTD SHS G0443N107 219 8,075 SH   SOLE 8,075 0 0
ATLANTICA YIELD PLC SHS G0751N103 13,663 517,745 SH   DFND 1 517,644 0 101
BLACK STONE MINERALS L P COM UNIT 09225M101 1,908 150,000 SH   SOLE 150,000 0 0
BP MIDSTREAM PARTNERS LP UNIT LTD PTNR 0556EL109 2,345 150,229 SH   SOLE 150,229 0 0
BP PLC SPONSORED ADR 055622104 9,738 258,020 SH   DFND 1 258,020 0 0
BRIGHAM MINERALS INC CL A COM 10918L103 3,786 176,599 SH   SOLE 176,599 0 0
CACTUS INC CL A 127203107 663 19,332 SH   DFND 1 19,332 0 0
CANADIAN NAT RES LTD COM 136385101 904 27,937 SH   SOLE 27,937 0 0
CHART INDS INC COM PAR $0.01 16115Q308 284 4,209 SH   SOLE 4,209 0 0
CHENIERE ENERGY INC COM NEW 16411R208 66,724 1,092,589 SH   DFND 1 2 3 1,092,589 0 0
CHENIERE ENERGY PARTNERS LP COM UNIT 16411Q101 5,521 138,680 SH   SOLE 138,680 0 0
CHEVRON CORP NEW COM 166764100 3,026 25,110 SH   DFND 1 25,110 0 0
CIMAREX ENERGY CO COM 171798101 524 9,987 SH   DFND 1 9,987 0 0
CLEARWAY ENERGY INC CL C 18539C204 10,993 551,047 SH   DFND 1 550,946 0 101
CNX MIDSTREAM PARTNERS LP COM UNIT REPST 12654A101 1,831 111,217 SH   DFND 2 3 111,217 0 0
CONCHO RES INC COM 20605P101 2,016 23,023 SH   DFND 1 23,023 0 0
CONOCOPHILLIPS COM 20825C104 1,229 18,900 SH   DFND 1 18,900 0 0
CRESTWOOD EQUITY PARTNERS LP UNIT LTD PARTNER 226344208 51,758 1,679,364 SH   DFND 1 2 3 1,679,364 0 0
CROWN CASTLE INTL CORP NEW COM 22822V101 578 4,063 SH   SOLE 4,063 0 0
CSX CORP COM 126408103 288 3,982 SH   SOLE 3,982 0 0
CVR ENERGY INC COM 12662P108 4,447 110,000 SH   SOLE 110,000 0 0
CYTOSORBENTS CORP COM NEW 23283X206 67 17,364 SH   SOLE 17,364 0 0
DCP MIDSTREAM LP COM UT LTD PTN 23311P100 45,912 1,874,733 SH   DFND 1 2 3 1,874,733 0 0
DIAMONDBACK ENERGY INC COM 25278X109 3,336 35,924 SH   DFND 1 35,924 0 0
DOMINION ENERGY INC COM 25746U109 4,141 50,000 SH   SOLE 50,000 0 0
DOW INC COM 260557103 6,781 123,891 SH   DFND 1 123,891 0 0
EATON CORP PLC SHS G29183103 1,053 11,117 SH   DFND 1 11,111 0 6
ENABLE MIDSTREAM PARTNERS LP COM UNIT RP IN 292480100 20,223 2,016,466 SH   DFND 1 2 3 2,016,466 0 0
ENBRIDGE INC COM 29250N105 37,843 951,540 SH   DFND 1 2 3 951,540 0 0
ENCANA CORP COM 292505104 945 201,422 SH   DFND 1 201,422 0 0
ENEL AMERICAS S A SPONSORED ADR 29274F104 331 30,168 SH   SOLE 30,168 0 0
ENERGY TRANSFER LP COM UT LTD PTN 29273V100 135,670 10,574,419 SH   DFND 1 2 3 10,574,419 0 0
ENLINK MIDSTREAM LLC COM UNIT REP LTD 29336T100 21,471 3,502,569 SH   DFND 1 2 3 3,502,569 0 0
ENTERPRISE PRODS PARTNERS L COM 293792107 146,512 5,202,844 SH   DFND 1 2 3 5,202,844 0 0
ENTERPRISE PRODS PARTNERS L COM 293792107 163 650,000 SH Call SOLE 650,000 0 0
EOG RES INC COM 26875P101 2,301 27,475 SH   DFND 1 27,475 0 0
EQM MIDSTREAM PARTNERS LP UNIT LTD PARTN 26885B100 57,915 1,936,312 SH   DFND 1 2 3 1,936,312 0 0
EQUINIX INC COM 29444U700 532 911 SH   SOLE 911 0 0
EQUINOR ASA SPONSORED ADR 29446M102 1,346 67,612 SH   DFND 1 67,612 0 0
EQUITRANS MIDSTREAM CORPORAT COM 294600101 3,769 282,100 SH   SOLE 282,100 0 0
EXACT SCIENCES CORP COM 30063P105 673 7,276 SH   SOLE 7,276 0 0
FIRST SOLAR INC COM 336433107 485 8,668 SH   DFND 1 8,635 0 33
FLEXION THERAPEUTICS INC COM 33938J106 409 19,782 SH   SOLE 19,782 0 0
GASLOG PARTNERS LP UNIT LTD PTNRP Y2687W108 9,546 610,343 SH   DFND 1 610,343 0 0
GDS HLDGS LTD SPONSORED ADS 36165L108 327 6,346 SH   SOLE 6,346 0 0
GENESIS ENERGY L P UNIT LTD PARTN 371927104 24,870 1,214,376 SH   DFND 1 2 3 1,214,376 0 0
GOLAR LNG LTD BERMUDA SHS G9456A100 789 55,467 SH   DFND 1 55,467 0 0
GOLAR LNG PARTNERS LP COM UNIT LPI Y2745C102 2,392 270,624 SH   SOLE 270,624 0 0
HALLIBURTON CO COM 406216101 1,186 48,454 SH   DFND 1 48,454 0 0
HOLLYFRONTIER CORP COM 436106108 778 15,352 SH   DFND 1 15,352 0 0
HUBSPOT INC COM 443573100 481 3,037 SH   SOLE 3,037 0 0
INFOSYS LTD SPONSORED ADR 456788108 277 26,869 SH   SOLE 26,869 0 0
INGEVITY CORP COM 45688C107 520 5,949 SH   SOLE 5,949 0 0
JACOBS ENGR GROUP INC COM 469814107 3,182 35,418 SH   DFND 1 35,418 0 0
KIMBELL RTY PARTNERS LP UNIT 49435R102 8,468 498,138 SH   DFND 1 498,138 0 0
KINDER MORGAN INC DEL COM 49456B101 98,325 4,644,523 SH   DFND 1 2 3 4,644,523 0 0
KINDER MORGAN INC DEL COM 49456B101 158 250,000 SH Call SOLE 250,000 0 0
KIRBY CORP COM 497266106 457 5,105 SH   DFND 1 5,105 0 0
KORNIT DIGITAL LTD SHS M6372Q113 361 10,545 SH   SOLE 10,545 0 0
KOSMOS ENERGY LTD COM 500688106 984 172,704 SH   DFND 1 172,704 0 0
LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 3,731 39,494 SH   DFND 1 39,494 0 0
MAGELLAN MIDSTREAM PRTNRS LP COM UNIT RP LP 559080106 96,781 1,539,379 SH   DFND 1 2 3 1,539,379 0 0
MARATHON PETE CORP COM 56585A102 9,377 155,638 SH   DFND 1 155,638 0 0
MATADOR RES CO COM 576485205 712 39,645 SH   DFND 1 39,645 0 0
MICROSOFT CORP COM 594918104 378 2,396 SH   SOLE 2,396 0 0
MPLX LP COM UNIT REP LTD 55336V100 79,557 3,124,798 SH   DFND 1 2 3 3,124,798 0 0
MPLX LP COM UNIT REP LTD 55336V100 80 400,000 SH Call SOLE 400,000 0 0
NEW FORTRESS ENERGY LLC CL A SHS RP LLC 644393100 1,101 70,291 SH   DFND 1 70,291 0 0
NEXTERA ENERGY INC COM 65339F101 2,943 12,155 SH   DFND 1 12,145 0 10
NEXTERA ENERGY PARTNERS LP COM UNIT PART IN 65341B106 42,691 810,848 SH   DFND 1 2 3 810,811 0 37
NGL ENERGY PARTNERS LP COM UNIT REPST 62913M107 3,418 301,368 SH   SOLE 301,368 0 0
NOBLE ENERGY INC COM 655044105 1,444 58,128 SH   DFND 1 58,128 0 0
NOBLE MIDSTREAM PARTNERS LP COM UNIT REPST 65506L105 1,936 72,882 SH   DFND 2 72,882 0 0
NORTHERN OIL & GAS INC NEV COM 665531109 515 220,000 SH   DFND 1 220,000 0 0
NUSTAR ENERGY LP UNIT COM 67058H102 15,614 604,025 SH   DFND 1 604,025 0 0
OCCIDENTAL PETE CORP COM 674599105 7,973 193,476 SH   DFND 1 193,476 0 0
ONEOK INC NEW COM 682680103 123,572 1,633,035 SH   DFND 1 2 3 1,633,035 0 0
OSHKOSH CORP COM 688239201 1,073 11,339 SH   DFND 1 11,339 0 0
PARSLEY ENERGY INC CL A 701877102 2,795 147,824 SH   DFND 1 147,824 0 0
PATTERN ENERGY GROUP INC CL A 70338P100 5,105 190,791 SH   SOLE 190,791 0 0
PATTERSON UTI ENERGY INC COM 703481101 611 58,161 SH   DFND 1 58,161 0 0
PBF LOGISTICS LP UNIT LTD PTNR 69318Q104 4,253 210,000 SH   SOLE 210,000 0 0
PEMBINA PIPELINE CORP COM 706327103 54,479 1,470,014 SH   DFND 1 2 3 1,470,014 0 0
PHILLIPS 66 COM 718546104 695 6,236 SH   DFND 1 6,236 0 0
PHILLIPS 66 PARTNERS LP COM UNIT REP INT 718549207 64,017 1,038,565 SH   DFND 1 2 3 1,038,565 0 0
PIONEER NAT RES CO COM 723787107 2,826 18,670 SH   DFND 1 18,670 0 0
PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 89,241 4,852,706 SH   DFND 1 2 3 4,852,706 0 0
PLAINS GP HLDGS L P LTD PARTNR INT A 72651A207 27,576 1,455,192 SH   DFND 2 3 1,455,192 0 0
POLARITYTE INC COM 731094108 78 30,012 SH   SOLE 30,012 0 0
PTC INC COM 69370C100 304 4,055 SH   SOLE 4,055 0 0
RAPID7 INC COM 753422104 663 11,831 SH   SOLE 11,831 0 0
RINGCENTRAL INC CL A 76680R206 882 5,228 SH   SOLE 5,228 0 0
ROSEHILL RES INC CL A 777385105 124 96,749 SH   SOLE 96,749 0 0
SCHLUMBERGER LTD COM 806857108 772 19,204 SH   DFND 1 19,204 0 0
SELECT ENERGY SVCS INC CL A COM 81617J301 583 62,789 SH   DFND 1 62,789 0 0
SEMPRA ENERGY COM 816851109 3,787 25,000 SH   SOLE 25,000 0 0
SHELL MIDSTREAM PARTNERS L P UNIT LTD INT 822634101 43,777 2,166,096 SH   DFND 1 2 3 2,166,096 0 0
SOUTHWEST AIRLS CO COM 844741108 1,492 27,645 SH   DFND 1 27,645 0 0
SUNCOR ENERGY INC NEW COM 867224107 1,480 45,130 SH   DFND 1 45,130 0 0
SUNOCO LP COM UT REP LP 86765K109 7,038 230,000 SH   SOLE 230,000 0 0
SUNRUN INC COM 86771W105 410 29,654 SH   DFND 1 29,523 0 131
SWITCH INC CL A 87105L104 228 15,411 SH   SOLE 15,411 0 0
TARGA RES CORP COM 87612G101 96,576 2,365,313 SH   DFND 1 2 3 2,365,313 0 0
TC ENERGY CORP COM 87807B107 57,649 1,081,388 SH   DFND 1 2 3 1,081,388 0 0
TELADOC HEALTH INC COM 87918A105 890 10,635 SH   SOLE 10,635 0 0
TOTAL S A SPONSORED ADS 89151E109 2,414 43,658 SH   DFND 1 43,658 0 0
TWILIO INC CL A 90138F102 449 4,569 SH   SOLE 4,569 0 0
UBS AG JERSEY BRH ALERIAN INFRST 902641646 2,011 103,535 SH   SOLE 103,535 0 0
UNITED RENTALS INC COM 911363109 956 5,731 SH   DFND 1 5,731 0 0
VALERO ENERGY CORP NEW COM 91913Y100 2,732 29,173 SH   DFND 1 29,173 0 0
VERMILION ENERGY INC COM 923725105 5,352 327,147 SH   DFND 1 327,147 0 0
VIPER ENERGY PARTNERS LP COM UNT RP INT 92763M105 12,450 504,878 SH   DFND 1 504,878 0 0
VISA INC COM CL A 92826C839 303 1,613 SH   SOLE 1,613 0 0
WABTEC CORP COM 929740108 1,159 14,891 SH   DFND 1 14,891 0 0
WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 8,507 432,071 SH   DFND 1 2 3 432,071 0 0
WESTLAKE CHEM CORP COM 960413102 454 6,465 SH   DFND 1 6,465 0 0
WILLIAMS COS INC DEL COM 969457100 81,424 3,432,701 SH   DFND 1 2 3 3,432,701 0 0
WILLIAMS COS INC DEL COM 969457100 126 300,000 SH Call SOLE 300,000 0 0
WPX ENERGY INC COM 98212B103 3,574 260,126 SH   DFND 1 260,126 0 0
XYLEM INC COM 98419M100 1,035 13,137 SH   DFND 1 13,109 0 28