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 22 1,532 SH   DFND N/A 1,532 0 0
ABB LTD SPONSORED ADR 000375204 12 549 SH   DFND N/A 549 0 0
ACUITY BRANDS INC COM 00508Y102 2 7 SH   DFND N/A 7 0 0
AMERICAN WTR WKS CO INC NEW COM 030420103 8 103 SH   DFND N/A 103 0 0
ANADARKO PETE CORP COM 032511107 19,440 306,825 SH   DFND N/A 306,825 0 0
ANTERO MIDSTREAM PARTNERS LP UNT LTD PARTN 03673L103 235,852 8,833,426 SH   DFND N/A 7,962,938 0 870,488
ANTERO RES CORP COM 03674X106 5,148 191,002 SH   DFND N/A 191,002 0 0
APACHE CORP COM 037411105 3 42 SH   DFND N/A 42 0 0
ANADARKO PETE CORP UNIT 99/99/9999 032511404 28,868 693,100 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 4 75 SH   DFND N/A 75 0 0
BP PLC SPONSORED ADR 055622104 5,819 165,500 SH   DFND N/A 165,500 0 0
BUCKEYE PARTNERS L P UNIT LTD PARTN 118230101 789,167 11,021,880 SH   DFND N/A 9,977,217 0 1,044,663
C&J ENERGY SVCS LTD SHS G3164Q101 0 89 SH   DFND N/A 89 0 0
CABOT OIL & GAS CORP COM 127097103 9,090 352,343 SH   DFND N/A 352,343 0 0
CALIFORNIA WTR SVC GROUP COM 130788102 3 99 SH   DFND N/A 99 0 0
CALPINE CORP COM NEW 131347304 1 68 SH   DFND N/A 68 0 0
CARRIZO OIL & GAS INC COM 144577103 10,234 251,943 SH   DFND N/A 251,943 0 0
CELANESE CORP DEL COM SER A 150870103 1 16 SH   DFND N/A 16 0 0
CENOVUS ENERGY INC COM 15135U109 2,201 153,200 SH   DFND N/A 153,200 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 134,317 3,080,665 SH   DFND N/A 3,080,665 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 12,791 95,190 SH   DFND N/A 95,190 0 0
CMS ENERGY CORP COM 125896100 2 49 SH   DFND N/A 49 0 0
COLUMBIA PIPELINE PARTNERS L COM UT REPSTG 198281107 56,090 3,475,222 SH   DFND N/A 3,068,068 0 407,154
CONCHO RES INC COM 20605P101 18,317 133,362 SH   DFND N/A 133,362 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 11,323 217,911 SH   DFND N/A 217,911 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 118,831 3,363,454 SH   DFND N/A 3,363,454 0 0
DEVON ENERGY CORP NEW COM 25179M103 12,331 279,548 SH   DFND N/A 279,548 0 0
DIAMONDBACK ENERGY INC COM 25278X109 8,704 90,157 SH   DFND N/A 90,157 0 0
DOMINION MIDSTREAM PARTNERS COM UT REP LTD 257454108 71,106 2,973,919 SH   DFND N/A 2,732,748 0 241,171
DOMINION RES INC VA NEW COM 25746U109 15 203 SH   DFND N/A 203 0 0
DRIL-QUIP INC COM 262037104 1 9 SH   DFND N/A 9 0 0
DTE ENERGY CO COM 233331107 10 104 SH   DFND N/A 104 0 0
DUKE ENERGY CORP NEW COM NEW 26441C204 3 32 SH   DFND N/A 32 0 0
DYNEGY INC NEW DEL COM 26817R108 1 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 43,370 1,704,808 SH   DFND N/A 1,704,808 0 0
ENBRIDGE ENERGY PARTNERS L P COM 29250R106 124,102 4,880,135 SH   DFND N/A 4,880,135 0 0
ENBRIDGE INC COM 29250N105 168,223 3,803,378 SH   DFND N/A 3,803,378 0 0
ENERGY TRANSFER EQUITY L P COM UT LTD PTN 29273V100 365,443 21,765,507 SH   DFND N/A 18,751,218 0 3,014,289
ENERGY TRANSFER PRTNRS L P UNIT LTD PARTN 29273R109 696,378 18,821,014 SH   DFND N/A 17,381,172 0 1,439,842
ENLINK MIDSTREAM PARTNERS LP COM UNIT REP LTD 29336U107 119,638 6,755,408 SH   DFND N/A 6,755,408 0 0
ENLINK MIDSTREAM LLC COM UNIT REP LTD 29336T100 54,838 3,273,931 SH   DFND N/A 3,273,931 0 0
ENTERPRISE PRODS PARTNERS L COM 293792107 1,124,043 40,681,969 SH   DFND N/A 36,665,437 0 4,016,532
EOG RES INC COM 26875P101 39,968 413,273 SH   DFND N/A 413,273 0 0
EQT CORP COM 26884L109 22,606 311,293 SH   DFND N/A 311,293 0 0
EQT GP HLDGS LP COM UNIT REP 26885J103 42,388 1,690,790 SH   DFND N/A 1,454,235 0 236,555
EQT MIDSTREAM PARTNERS LP UNIT LTD PARTN 26885B100 727,157 9,543,994 SH   DFND N/A 8,592,179 0 951,815
ESCO TECHNOLOGIES INC COM 296315104 2 35 SH   DFND N/A 35 0 0
EXXON MOBIL CORP COM 30231G102 3 35 SH   DFND N/A 35 0 0
FAIRMOUNT SANTROL HLDGS INC COM 30555Q108 377 44,440 SH   DFND N/A 44,440 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 14 300 SH   DFND N/A 300 0 0
GENESIS ENERGY L P UNIT LTD PARTN 371927104 376,971 9,928,136 SH   DFND N/A 9,026,263 0 901,873
GULFPORT ENERGY CORP COM NEW 402635304 6,173 218,509 SH   DFND N/A 218,509 0 0
HALLIBURTON CO COM 406216101 742 16,535 SH   DFND N/A 16,535 0 0
HANNON ARMSTRONG SUST INFR C COM 41068X100 32 1,363 SH   DFND N/A 1,363 0 0
HD SUPPLY HLDGS INC COM 40416M105 2 68 SH   DFND N/A 68 0 0
HELMERICH & PAYNE INC COM 423452101 515 7,646 SH   DFND N/A 7,646 0 0
HESS CORP COM 42809H107 548 10,213 SH   DFND N/A 10,213 0 0
HOLLY ENERGY PARTNERS L P COM UT LTD PTN 435763107 3 76 SH   DFND N/A 76 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
KINDER MORGAN INC DEL COM 49456B101 162,864 7,041,245 SH   DFND N/A 7,041,245 0 0
KINDER MORGAN INC DEL PFD SER A 49456B200 2,251 44,949 SH   DFND N/A 44,949 0 0
LAREDO PETROLEUM INC COM 516806106 895 69,346 SH   DFND N/A 69,346 0 0
LIBERTY PPTY TR SH BEN INT 531172104 2 50 SH   DFND N/A 50 0 0
LINDSAY CORP COM 535555106 0 6 SH   DFND N/A 6 0 0
LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 1,664 20,628 SH   DFND N/A 20,628 0 0
MAGELLAN MIDSTREAM PRTNRS LP COM UNIT RP LP 559080106 1,032,131 14,590,490 SH   DFND N/A 13,045,530 0 1,544,960
MARATHON PETE CORP COM 56585A102 888 21,876 SH   DFND N/A 21,876 0 0
MIX TELEMATICS LTD SPONSORED ADR 60688N102 29 4,480 SH   DFND N/A 4,480 0 0
MPLX LP COM UNIT REP LTD 55336V100 677,785 20,017,288 SH   DFND N/A 17,841,698 0 2,175,590
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 34,161 631,788 SH   DFND N/A 631,788 0 0
NATIONAL OILWELL VARCO INC COM 637071101 1 22 SH   DFND N/A 22 0 0
NEWFIELD EXPL CO COM 651290108 11,497 264,551 SH   DFND N/A 264,551 0 0
NEWPARK RES INC COM PAR $.01NEW 651718504 1 91 SH   DFND N/A 91 0 0
NEXTERA ENERGY INC COM 65339F101 16 130 SH   DFND N/A 130 0 0
NEXTERA ENERGY PARTNERS LP COM UNIT PART IN 65341B106 776 27,741 SH   DFND N/A 27,741 0 0
NISOURCE INC COM 65473P105 37,508 1,555,711 SH   DFND N/A 1,555,711 0 0
NOBLE ENERGY INC COM 655044105 2,201 61,583 SH   DFND N/A 61,583 0 0
NOBLE MIDSTREAM PARTNERS LP COM UNIT REPST 65506L105 59,365 2,127,762 SH   DFND N/A 1,933,134 0 194,628
NRG ENERGY INC COM NEW 629377508 1 58 SH   DFND N/A 58 0 0
NRG YIELD INC CL A NEW 62942X306 15 900 SH   DFND N/A 900 0 0
NRG YIELD INC CL C 62942X405 697 41,125 SH   DFND N/A 41,125 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 612 8,390 SH   DFND N/A 8,390 0 0
OLIN CORP COM PAR $1 680665205 1 42 SH   DFND N/A 42 0 0
ONEOK PARTNERS LP UNIT LTD PARTN 68268N103 730,567 18,287,029 SH   DFND N/A 16,629,734 0 1,657,295
ONEOK INC NEW COM 682680103 196,617 3,825,979 SH   DFND N/A 3,825,979 0 0
PARSLEY ENERGY INC CL A 701877102 9,535 284,538 SH   DFND N/A 284,538 0 0
PATTERN ENERGY GROUP INC CL A 70338P100 27 1,196 SH   DFND N/A 1,196 0 0
PATTERSON UTI ENERGY INC COM 703481101 532 23,763 SH   DFND N/A 23,763 0 0
PDC ENERGY INC COM 69327R101 5,766 85,985 SH   DFND N/A 85,985 0 0
PEMBINA PIPELINE CORP COM 706327103 70,795 2,323,149 SH   DFND N/A 2,323,149 0 0
PENTAIR PLC SHS G7S00T104 3 45 SH   DFND N/A 45 0 0
PHILLIPS 66 COM 718546104 991 12,297 SH   DFND N/A 12,297 0 0
PHILLIPS 66 PARTNERS LP COM UNIT REP INT 718549207 377,109 7,759,453 SH   DFND N/A 6,815,413 0 944,040
PINNACLE WEST CAP CORP COM 723484101 1 12 SH   DFND N/A 12 0 0
PIONEER NAT RES CO COM 723787107 36,818 198,321 SH   DFND N/A 198,321 0 0
PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 1,036,172 32,988,613 SH   DFND N/A 29,641,796 0 3,346,817
PLAINS GP HLDGS L P SHS A REP LTPN 72651A108 141,782 10,956,845 SH   DFND N/A 10,956,845 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 9,254 238,801 SH   DFND N/A 238,801 0 0
RICE ENERGY INC COM 762760106 8,328 318,958 SH   DFND N/A 318,958 0 0
RICE MIDSTREAM PARTNERS LP UNIT LTD PARTN 762819100 40,603 1,673,641 SH   DFND N/A 1,673,641 0 0
ROYAL DUTCH SHELL PLC SPONS ADR A 780259206 5,733 114,500 SH   DFND N/A 114,500 0 0
RSP PERMIAN INC COM 74978Q105 11,498 296,505 SH   DFND N/A 296,505 0 0
SCHLUMBERGER LTD COM 806857108 186 2,359 SH   DFND N/A 2,359 0 0
SCHNITZER STL INDS CL A 806882106 19 900 SH   DFND N/A 900 0 0
SEASPAN CORP SHS Y75638109 5 400 SH   DFND N/A 400 0 0
SEMGROUP CORP CL A 81663A105 63,960 1,808,837 SH   DFND N/A 1,808,837 0 0
SEMPRA ENERGY COM 816851109 16 152 SH   DFND N/A 152 0 0
SHELL MIDSTREAM PARTNERS L P UNIT LTD INT 822634101 331,643 10,338,013 SH   DFND N/A 9,273,426 0 1,064,587
SOLARCITY CORP COM 83416T100 1 27 SH   DFND N/A 27 0 0
SPECTRA ENERGY CORP COM 847560109 224,142 5,243,099 SH   DFND N/A 5,243,099 0 0
SPECTRA ENERGY PARTNERS LP COM 84756N109 474,221 10,854,213 SH   DFND N/A 9,865,491 0 988,722
SUNOCO LOGISTICS PRTNRS L P COM UNITS 86764L108 708,867 24,951,325 SH   DFND N/A 22,700,330 0 2,250,995
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 19,485 810,177 SH   DFND N/A 810,177 0 0
TALLGRASS ENERGY PARTNERS LP COM UNIT 874697105 275,795 5,721,883 SH   DFND N/A 5,202,163 0 519,720
TARGA RES CORP COM 87612G101 114,416 2,329,787 SH   DFND N/A 2,329,787 0 0
TERRAFORM GLOBAL INC CL A 88104M101 11 2,600 SH   DFND N/A 2,600 0 0
TERRAFORM PWR INC CL A COM 88104R100 25 1,800 SH   DFND N/A 1,800 0 0
TESLA MTRS INC COM 88160R101 3 15 SH   DFND N/A 15 0 0
TESORO CORP COM 881609101 728 9,149 SH   DFND N/A 9,149 0 0
TESORO LOGISTICS LP COM UNIT LP 88160T107 505,515 10,435,895 SH   DFND N/A 9,400,018 0 1,035,877
TETRA TECH INC NEW COM 88162G103 4 117 SH   DFND N/A 117 0 0
TETRA TECHNOLOGIES INC DEL COM 88162F105 1 104 SH   DFND N/A 104 0 0
TRANSCANADA CORP COM 89353D107 211,046 4,437,459 SH   DFND N/A 4,437,459 0 0
U S SILICA HLDGS INC COM 90346E103 547 11,741 SH   DFND N/A 11,741 0 0
VALERO ENERGY CORP NEW COM 91913Y100 519 9,796 SH   DFND N/A 9,796 0 0
VALERO ENERGY PARTNERS LP COM UNT REP LP 91914J102 216,528 4,956,010 SH   DFND N/A 4,467,980 0 488,030
VTTI ENERGY PARTNERS LP COM UNIT RP LT Y9384M101 25,372 1,334,665 SH   DFND N/A 1,334,665 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 11 178 SH   DFND N/A 178 0 0
WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 52,264 1,230,028 SH   DFND N/A 1,058,774 0 171,254
WESTERN GAS PARTNERS LP COM UNIT LP IN 958254104 686,806 12,476,038 SH   DFND N/A 11,398,376 0 1,077,662
WESTLAKE CHEM CORP COM 960413102 799 14,937 SH   DFND N/A 14,937 0 0
WHITING PETE CORP NEW COM 966387102 38 4,315 SH   DFND N/A 4,315 0 0
WILLIAMS COS INC DEL COM 969457100 572,517 18,630,559 SH   DFND N/A 16,635,938 0 1,994,621
WILLIAMS PARTNERS L P NEW COM UNIT LTD PAR 96949L105 303,313 8,155,758 SH   DFND N/A 7,508,755 0 647,003
XYLEM INC COM 98419M100 9 181 SH   DFND N/A 181 0 0