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
8POINT3 ENERGY PARTNERS LP CL A RPT LTDPT 282539105 19 1,449 SH   DFND N/A 1,449 0 0
ABB LTD SPONSORED ADR 000375204 12 549 SH   DFND N/A 549 0 0
ACUITY BRANDS INC COM 00508Y102 2 8 SH   DFND N/A 8 0 0
ALBEMARLE CORP COM 012653101 1 16 SH   DFND N/A 16 0 0
ALPS ETF TR ALERIAN MLP 00162Q866 291 23,066 SH   DFND N/A 23,066 0 0
ALGONQUIN PWR UTILS CORP COM 015857105 1 114 SH   DFND N/A 114 0 0
AMERICAN WTR WKS CO INC NEW COM 030420103 7 103 SH   DFND N/A 103 0 0
ANADARKO PETE CORP COM 032511107 21,349 306,173 SH   DFND N/A 306,173 0 0
ANTERO MIDSTREAM PARTNERS LP UNT LTD PARTN 03673L103 261,260 8,460,503 SH   DFND N/A 7,515,249 0 945,254
ANTERO RES CORP COM 03674X106 4,507 190,577 SH   DFND N/A 190,577 0 0
APACHE CORP COM 037411105 3 42 SH   DFND N/A 42 0 0
ANADARKO PETE CORP UNIT 99/99/9999 032511404 28,660 693,100 SH   DFND N/A 693,100 0 0
AQUA AMERICA INC COM 03836W103 1 23 SH   DFND N/A 23 0 0
ARCHROCK INC COM 03957W106 1 57 SH   DFND N/A 57 0 0
ASPEN AEROGELS INC COM 04523Y105 0 57 SH   DFND N/A 57 0 0
ATWOOD OCEANICS INC COM 050095108 0 23 SH   DFND N/A 23 0 0
BADGER METER INC COM 056525108 1 36 SH   DFND N/A 36 0 0
BAKER HUGHES INC COM 057224107 5 75 SH   DFND N/A 75 0 0
BP PLC SPONSORED ADR 055622104 6,186 165,500 SH   DFND N/A 165,500 0 0
BROOKFIELD RENEWABLE PARTNER PARTNERSHIP UNIT G16258108 17 564 SH   DFND N/A 564 0 0
BUCKEYE PARTNERS L P UNIT LTD PARTN 118230101 764,954 11,562,188 SH   DFND N/A 10,369,550 0 1,192,638
CABOT OIL & GAS CORP COM 127097103 8,259 353,546 SH   DFND N/A 353,546 0 0
CALPINE CORP COM NEW 131347304 1 68 SH   DFND N/A 68 0 0
CARRIZO OIL & GAS INC COM 144577103 9,080 243,108 SH   DFND N/A 243,108 0 0
CELANESE CORP DEL COM SER A 150870103 1 16 SH   DFND N/A 16 0 0
CENTENNIAL RESOURCE DEV INC CL A 15136A102 12,889 687,758 SH   DFND N/A 687,758 0 0
CHART INDS INC COM PAR $0.01 16115Q308 0 7 SH   DFND N/A 7 0 0
CHENIERE ENERGY INC COM NEW 16411R208 176,904 4,269,945 SH   DFND N/A 4,269,945 0 0
CHENIERE ENERGY PARTNERS LP COM UNIT 16411Q101 1 36 SH   DFND N/A 36 0 0
CHEVRON CORP NEW COM 166764100 2 18 SH   DFND N/A 18 0 0
CIMAREX ENERGY CO COM 171798101 12,764 93,925 SH   DFND N/A 93,925 0 0
CMS ENERGY CORP COM 125896100 2 49 SH   DFND N/A 49 0 0
COLUMBIA PIPELINE PARTNERS L COM UT REPSTG 198281107 7,118 415,045 SH   DFND N/A 415,045 0 0
CONCHO RES INC COM 20605P101 18,218 137,392 SH   DFND N/A 137,392 0 0
CONNECTICUT WTR SVC INC COM 207797101 1 22 SH   DFND N/A 22 0 0
CONOCOPHILLIPS COM 20825C104 1 28 SH   DFND N/A 28 0 0
CONTINENTAL RESOURCES INC COM 212015101 10,240 198,676 SH   DFND N/A 198,676 0 0
CORE LABORATORIES N V COM N22717107 1 10 SH   DFND N/A 10 0 0
COVANTA HLDG CORP COM 22282E102 6 400 SH   DFND N/A 400 0 0
DANAHER CORP DEL COM 235851102 6 82 SH   DFND N/A 82 0 0
DCP MIDSTREAM PARTNERS LP COM UT LTD PTN 23311P100 135,946 3,542,113 SH   DFND N/A 3,542,113 0 0
DEVON ENERGY CORP NEW COM 25179M103 13,205 289,149 SH   DFND N/A 289,149 0 0
DIAMONDBACK ENERGY INC COM 25278X109 13,487 133,452 SH   DFND N/A 133,452 0 0
DOMINION MIDSTREAM PARTNERS COM UT REP LTD 257454108 205,642 7,026,421 SH   DFND N/A 6,370,748 0 655,673
DOMINION RES INC VA NEW COM 25746U109 24 316 SH   DFND N/A 316 0 0
DRIL-QUIP INC COM 262037104 1 9 SH   DFND N/A 9 0 0
DTE ENERGY CO COM 233331107 16 159 SH   DFND N/A 159 0 0
DTE ENERGY CO UNIT 99/99/9999 233331883 2,099 39,600 SH   DFND N/A 39,600 0 0
DUKE ENERGY CORP NEW COM NEW 26441C204 2 32 SH   DFND N/A 32 0 0
DYNEGY INC NEW DEL COM 26817R108 0 45 SH   DFND N/A 45 0 0
EASTMAN CHEM CO COM 277432100 1 17 SH   DFND N/A 17 0 0
ECOLAB INC COM 278865100 2 19 SH   DFND N/A 19 0 0
EDISON INTL COM 281020107 3 36 SH   DFND N/A 36 0 0
ENBRIDGE ENERGY MANAGEMENT L SHS UNITS LLI 29250X103 45,182 1,744,471 SH   DFND N/A 1,744,471 0 0
ENBRIDGE ENERGY PARTNERS L P COM 29250R106 136,776 5,367,957 SH   DFND N/A 5,367,957 0 0
ENBRIDGE INC COM 29250N105 173,869 4,127,955 SH   DFND N/A 4,127,955 0 0
ENERGY TRANSFER EQUITY L P COM UT LTD PTN 29273V100 467,529 24,211,760 SH   DFND N/A 20,490,296 0 3,721,464
ENERGY TRANSFER PRTNRS L P UNIT LTD PARTN 29273R109 610,530 17,049,161 SH   DFND N/A 15,800,972 0 1,248,189
ENLINK MIDSTREAM PARTNERS LP COM UNIT REP LTD 29336U107 130,512 7,085,323 SH   DFND N/A 7,085,323 0 0
ENLINK MIDSTREAM LLC COM UNIT REP LTD 29336T100 62,438 3,277,588 SH   DFND N/A 3,277,588 0 0
ENTERPRISE PRODS PARTNERS L COM 293792107 1,082,267 40,024,667 SH   DFND N/A 35,778,117 0 4,246,550
EOG RES INC COM 26875P101 39,622 391,906 SH   DFND N/A 391,906 0 0
EQT CORP COM 26884L109 16,208 247,824 SH   DFND N/A 247,824 0 0
EQT GP HLDGS LP COM UNIT REP 26885J103 44,495 1,764,993 SH   DFND N/A 1,514,870 0 250,123
EQT MIDSTREAM PARTNERS LP UNIT LTD PARTN 26885B100 695,911 9,075,517 SH   DFND N/A 8,026,201 0 1,049,316
ESCO TECHNOLOGIES INC COM 296315104 2 35 SH   DFND N/A 35 0 0
EXTRACTION OIL AND GAS INC COM 30227M105 13,370 750,978 SH   DFND N/A 750,978 0 0
EXXON MOBIL CORP COM 30231G102 3 35 SH   DFND N/A 35 0 0
FAIRMOUNT SANTROL HLDGS INC COM 30555Q108 1,108 93,999 SH   DFND N/A 93,999 0 0
FIRST SOLAR INC COM 336433107 1 19 SH   DFND N/A 19 0 0
FMC TECHNOLOGIES INC COM 30249U101 1 31 SH   DFND N/A 31 0 0
FORUM ENERGY TECHNOLOGIES IN COM 34984V100 1 41 SH   DFND N/A 41 0 0
FRANKS INTL N V COM N33462107 1 48 SH   DFND N/A 48 0 0
GARMIN LTD SHS H2906T109 15 300 SH   DFND N/A 300 0 0
GENESIS ENERGY L P UNIT LTD PARTN 371927104 345,566 9,593,720 SH   DFND N/A 8,620,474 0 973,246
GULFPORT ENERGY CORP COM NEW 402635304 750 34,635 SH   DFND N/A 34,635 0 0
HALLIBURTON CO COM 406216101 1,811 33,486 SH   DFND N/A 33,486 0 0
HANNON ARMSTRONG SUST INFR C COM 41068X100 26 1,363 SH   DFND N/A 1,363 0 0
HD SUPPLY HLDGS INC COM 40416M105 3 68 SH   DFND N/A 68 0 0
HELMERICH & PAYNE INC COM 423452101 697 9,005 SH   DFND N/A 9,005 0 0
HESS CORP COM 42809H107 462 7,413 SH   DFND N/A 7,413 0 0
HOLLY ENERGY PARTNERS L P COM UT LTD PTN 435763107 3 107 SH   DFND N/A 107 0 0
IDEX CORP COM 45167R104 3 29 SH   DFND N/A 29 0 0
INFRAREIT INC COM 45685L100 1 80 SH   DFND N/A 80 0 0
ITRON INC COM 465741106 3 45 SH   DFND N/A 45 0 0
JPMORGAN CHASE & CO ALERIAN ML ETN 46625H365 2,021 63,934 SH   DFND N/A 58,612 0 5,322
KINDER MORGAN INC DEL COM 49456B101 204,220 9,860,939 SH   DFND N/A 9,860,939 0 0
KINDER MORGAN INC DEL PFD SER A 49456B200 2,187 44,949 SH   DFND N/A 44,949 0 0
LAREDO PETROLEUM INC COM 516806106 873 61,729 SH   DFND N/A 61,729 0 0
LINDSAY CORP COM 535555106 0 6 SH   DFND N/A 6 0 0
LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 876 10,210 SH   DFND N/A 10,210 0 0
MAGELLAN MIDSTREAM PRTNRS LP COM UNIT RP LP 559080106 1,090,085 14,413,392 SH   DFND N/A 12,772,411 0 1,640,981
MARATHON OIL CORP COM 565849106 191 11,013 SH   DFND N/A 11,013 0 0
MARATHON PETE CORP COM 56585A102 1,509 29,968 SH   DFND N/A 29,968 0 0
MIX TELEMATICS LTD SPONSORED ADR 60688N102 12 2,000 SH   DFND N/A 2,000 0 0
MPLX LP COM UNIT REP LTD 55336V100 654,120 18,894,274 SH   DFND N/A 16,689,913 0 2,204,361
MRC GLOBAL INC COM 55345K103 1 63 SH   DFND N/A 63 0 0
MUELLER WTR PRODS INC COM SER A 624758108 2 137 SH   DFND N/A 137 0 0
NABORS INDUSTRIES LTD SHS G6359F103 2 131 SH   DFND N/A 131 0 0
NATIONAL FUEL GAS CO N J COM 636180101 39,243 692,842 SH   DFND N/A 692,842 0 0
NATIONAL OILWELL VARCO INC COM 637071101 1 22 SH   DFND N/A 22 0 0
NEWFIELD EXPL CO COM 651290108 10,029 247,632 SH   DFND N/A 247,632 0 0
NEWPARK RES INC COM PAR $.01NEW 651718504 1 91 SH   DFND N/A 91 0 0
NEXTERA ENERGY INC COM 65339F101 24 200 SH   DFND N/A 200 0 0
NEXTERA ENERGY PARTNERS LP COM UNIT PART IN 65341B106 1,058 41,407 SH   DFND N/A 41,407 0 0
NISOURCE INC COM 65473P105 26,756 1,208,472 SH   DFND N/A 1,208,472 0 0
NOBLE ENERGY INC COM 655044105 2,486 65,305 SH   DFND N/A 65,305 0 0
NOBLE MIDSTREAM PARTNERS LP COM UNIT REPST 65506L105 78,132 2,170,345 SH   DFND N/A 1,959,765 0 210,580
NRG ENERGY INC COM NEW 629377508 1 58 SH   DFND N/A 58 0 0
NRG YIELD INC CL A NEW 62942X306 14 900 SH   DFND N/A 900 0 0
NRG YIELD INC CL C 62942X405 471 29,825 SH   DFND N/A 29,825 0 0
NUSTAR ENERGY LP UNIT COM 67058H102 100 2,015 SH   DFND N/A 2,015 0 0
OCCIDENTAL PETE CORP DEL COM 674599105 515 7,224 SH   DFND N/A 7,224 0 0
OLIN CORP COM PAR $1 680665205 1 42 SH   DFND N/A 42 0 0
ONEOK PARTNERS LP UNIT LTD PARTN 68268N103 777,647 18,080,599 SH   DFND N/A 16,336,462 0 1,744,137
ONEOK INC NEW COM 682680103 190,563 3,319,343 SH   DFND N/A 3,319,343 0 0
PARSLEY ENERGY INC CL A 701877102 9,894 280,763 SH   DFND N/A 280,763 0 0
PATTERN ENERGY GROUP INC CL A 70338P100 30 1,558 SH   DFND N/A 1,558 0 0
PATTERSON UTI ENERGY INC COM 703481101 247 9,177 SH   DFND N/A 9,177 0 0
PDC ENERGY INC COM 69327R101 5,897 81,255 SH   DFND N/A 81,255 0 0
PEMBINA PIPELINE CORP COM 706327103 82,586 2,642,620 SH   DFND N/A 2,642,620 0 0
PENTAIR PLC SHS G7S00T104 3 45 SH   DFND N/A 45 0 0
PHILLIPS 66 COM 718546104 1,233 14,267 SH   DFND N/A 14,267 0 0
PHILLIPS 66 PARTNERS LP COM UNIT REP INT 718549207 393,864 8,097,527 SH   DFND N/A 7,031,053 0 1,066,474
PINNACLE WEST CAP CORP COM 723484101 1 12 SH   DFND N/A 12 0 0
PIONEER NAT RES CO COM 723787107 36,109 200,527 SH   DFND N/A 200,527 0 0
PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 1,071,930 33,196,967 SH   DFND N/A 29,679,056 0 3,517,911
PLAINS GP HLDGS L P LTD PARTNR INT A 72651A207 158,168 4,560,783 SH   DFND N/A 4,560,783 0 0
PORTLAND GEN ELEC CO COM NEW 736508847 1 13 SH   DFND N/A 13 0 0
PPL CORP COM 69351T106 3 93 SH   DFND N/A 93 0 0
PRECISION DRILLING CORP COM 2010 74022D308 0 40 SH   DFND N/A 40 0 0
QEP RES INC COM 74733V100 1 68 SH   DFND N/A 68 0 0
RANGE RES CORP COM 75281A109 8,145 237,047 SH   DFND N/A 237,047 0 0
RICE ENERGY INC COM 762760106 6,927 324,433 SH   DFND N/A 324,433 0 0
RICE MIDSTREAM PARTNERS LP UNIT LTD PARTN 762819100 180,792 7,355,246 SH   DFND N/A 7,355,246 0 0
ROYAL DUTCH SHELL PLC SPONS ADR A 780259206 6,227 114,500 SH   DFND N/A 114,500 0 0
RSP PERMIAN INC COM 74978Q105 13,177 295,305 SH   DFND N/A 295,305 0 0
SCHLUMBERGER LTD COM 806857108 6 73 SH   DFND N/A 73 0 0
SCHNITZER STL INDS CL A 806882106 23 900 SH   DFND N/A 900 0 0
SEMGROUP CORP CL A 81663A105 76,379 1,829,433 SH   DFND N/A 1,829,433 0 0
SEMPRA ENERGY COM 816851109 24 241 SH   DFND N/A 241 0 0
SHELL MIDSTREAM PARTNERS L P UNIT LTD INT 822634101 288,184 9,906,642 SH   DFND N/A 8,738,232 0 1,168,410
SM ENERGY CO COM 78454L100 6,767 196,260 SH   DFND N/A 196,260 0 0
SPECTRA ENERGY CORP COM 847560109 218,705 5,322,583 SH   DFND N/A 5,322,583 0 0
SPECTRA ENERGY PARTNERS LP COM 84756N109 467,773 10,204,482 SH   DFND N/A 9,232,928 0 971,554
SUNOCO LOGISTICS PRTNRS L P COM UNITS 86764L108 570,837 23,765,061 SH   DFND N/A 21,371,280 0 2,393,781
SUNPOWER CORP COM 867652406 1 88 SH   DFND N/A 88 0 0
SUNRUN INC COM 86771W105 1 168 SH   DFND N/A 168 0 0
SUPERIOR ENERGY SVCS INC COM 868157108 1 53 SH   DFND N/A 53 0 0
TALLGRASS ENERGY GP LP SHS CL A 874696107 81,197 3,029,730 SH   DFND N/A 2,783,706 0 246,024
TALLGRASS ENERGY PARTNERS LP COM UNIT 874697105 282,510 5,953,845 SH   DFND N/A 5,379,714 0 574,131
TARGA RES CORP COM 87612G101 159,374 2,842,416 SH   DFND N/A 2,842,416 0 0
TERRAFORM GLOBAL INC CL A 88104M101 10 2,600 SH   DFND N/A 2,600 0 0
TERRAFORM PWR INC CL A COM 88104R100 23 1,800 SH   DFND N/A 1,800 0 0
TESLA MTRS INC COM 88160R101 4 18 SH   DFND N/A 18 0 0
TESORO CORP COM 881609101 1,220 13,949 SH   DFND N/A 13,949 0 0
TESORO LOGISTICS LP COM UNIT LP 88160T107 567,318 11,165,489 SH   DFND N/A 9,938,019 0 1,227,470
TETRA TECH INC NEW COM 88162G103 5 112 SH   DFND N/A 112 0 0
TETRA TECHNOLOGIES INC DEL COM 88162F105 1 104 SH   DFND N/A 104 0 0
TRANSCANADA CORP COM 89353D107 228,701 5,065,365 SH   DFND N/A 5,065,365 0 0
U S SILICA HLDGS INC COM 90346E103 1,009 17,804 SH   DFND N/A 17,804 0 0
VALERO ENERGY CORP NEW COM 91913Y100 925 13,534 SH   DFND N/A 13,534 0 0
VALERO ENERGY PARTNERS LP COM UNT REP LP 91914J102 226,340 5,112,718 SH   DFND N/A 4,510,496 0 602,222
VTTI ENERGY PARTNERS LP COM UNIT RP LT Y9384M101 27,387 1,695,760 SH   DFND N/A 1,695,760 0 0
WATTS WATER TECHNOLOGIES INC CL A 942749102 4 67 SH   DFND N/A 67 0 0
WEATHERFORD INTL PLC ORD SHS G48833100 1 123 SH   DFND N/A 123 0 0
WEC ENERGY GROUP INC COM 92939U106 20 338 SH   DFND N/A 338 0 0
WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 50,635 1,195,636 SH   DFND N/A 1,021,064 0 174,572
WESTERN GAS PARTNERS LP COM UNIT LP IN 958254104 723,179 12,307,332 SH   DFND N/A 11,202,946 0 1,104,386
WESTLAKE CHEM CORP COM 960413102 435 7,764 SH   DFND N/A 7,764 0 0
WHITING PETE CORP NEW COM 966387102 0 27 SH   DFND N/A 27 0 0
WILLIAMS COS INC DEL COM 969457100 543,834 17,464,152 SH   DFND N/A 15,717,126 0 1,747,026
WILLIAMS PARTNERS L P NEW COM UNIT LTD PAR 96949L105 396,380 10,422,833 SH   DFND N/A 9,355,524 0 1,067,309
WPX ENERGY INC COM 98212B103 1,124 77,111 SH   DFND N/A 77,111 0 0
XYLEM INC COM 98419M100 9 181 SH   DFND N/A 181 0 0