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 20 1,351 SH   DFND N/A 1,351 0 0
ABB LTD SPONSORED ADR 000375204 10 500 SH   DFND N/A 500 0 0
ACUITY BRANDS INC COM 00508Y102 1 6 SH   DFND N/A 6 0 0
ALLIANCE HOLDINGS GP LP COM UNITS LP 01861G100 146 10,000 SH   DFND N/A 10,000 0 0
AMERICAN MIDSTREAM PARTNERS COM UNITS 02752P100 69 10,000 SH   DFND N/A 10,000 0 0
AMERICAN WTR WKS CO INC NEW COM 030420103 7 103 SH   DFND N/A 103 0 0
ANADARKO PETE CORP COM 032511107 16,673 358,024 SH   DFND N/A 358,024 0 0
ANTERO MIDSTREAM PARTNERS LP UNT LTD PARTN 03673L103 220,016 9,950,964 SH   DFND N/A 9,129,697 0 821,267
ANTERO RES CORP COM 03674X106 4,381 176,144 SH   DFND N/A 176,144 0 0
APACHE CORP COM 037411105 2 42 SH   DFND N/A 42 0 0
ANADARKO PETE CORP UNIT 99/99/9999 032511404 23,621 693,100 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 0 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 18 SH   DFND N/A 18 0 0
BAKER HUGHES INC COM 057224107 3 71 SH   DFND N/A 71 0 0
BP PLC SPONSORED ADR 055622104 4,995 165,500 SH   DFND N/A 165,500 0 0
BROOKS AUTOMATION INC COM 114340102 9 900 SH   DFND N/A 900 0 0
BUCKEYE PARTNERS L P UNIT LTD PARTN 118230101 766,701 11,284,975 SH   DFND N/A 10,256,232 0 1,028,743
C&J ENERGY SVCS LTD SHS G3164Q101 0 89 SH   DFND N/A 89 0 0
CABOT OIL & GAS CORP COM 127097103 7,930 349,200 SH   DFND N/A 349,200 0 0
CALIFORNIA WTR SVC GROUP COM 130788102 11 399 SH   DFND N/A 399 0 0
CALPINE CORP COM NEW 131347304 1 79 SH   DFND N/A 79 0 0
CAMERON INTERNATIONAL CORP COM 13342B105 1 21 SH   DFND N/A 21 0 0
CARRIZO OIL & GAS INC COM 144577103 6,894 222,961 SH   DFND N/A 222,961 0 0
CEDAR FAIR L P DEPOSITRY UNIT 150185106 434 7,300 SH   DFND N/A 7,300 0 0
CENOVUS ENERGY INC COM 15135U109 1,992 153,200 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 72,036 2,129,348 SH   DFND N/A 2,129,348 0 0
CHEVRON CORP NEW COM 166764100 2 18 SH   DFND N/A 18 0 0
CIMAREX ENERGY CO COM 171798101 9,641 99,111 SH   DFND N/A 99,111 0 0
CMS ENERGY CORP COM 125896100 2 38 SH   DFND N/A 38 0 0
COLUMBIA PIPELINE GROUP INC COM 198280109 100,888 4,019,433 SH   DFND N/A 4,019,433 0 0
COLUMBIA PIPELINE PARTNERS L COM UT REPSTG 198281107 124,700 8,541,104 SH   DFND N/A 7,968,462 0 572,642
CONCHO RES INC COM 20605P101 12,968 128,347 SH   DFND N/A 128,347 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 2,332 76,826 SH   DFND N/A 76,826 0 0
CORE LABORATORIES N V COM N22717107 1 10 SH   DFND N/A 10 0 0
DANAHER CORP DEL COM 235851102 6 62 SH   DFND N/A 62 0 0
DCP MIDSTREAM PARTNERS LP COM UT LTD PTN 23311P100 95,198 3,496,074 SH   DFND N/A 3,496,074 0 0
DEVON ENERGY CORP NEW COM 25179M103 7,570 275,869 SH   DFND N/A 275,869 0 0
DIAMONDBACK ENERGY INC COM 25278X109 7,069 91,591 SH   DFND N/A 91,591 0 0
DOMINION MIDSTREAM PARTNERS COM UT REP LTD 257454108 94,470 2,799,107 SH   DFND N/A 2,594,540 0 204,567
DOMINION RES INC VA NEW COM 25746U109 325 4,323 SH   DFND N/A 4,323 0 0
DORIAN LPG LTD SHS USD Y2106R110 648 68,967 SH   DFND N/A 68,967 0 0
DRIL-QUIP INC COM 262037104 1 9 SH   DFND N/A 9 0 0
DTE ENERGY CO COM 233331107 318 3,504 SH   DFND N/A 3,504 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 2 24 SH   DFND N/A 24 0 0
ENBRIDGE ENERGY MANAGEMENT L SHS UNITS LLI 29250X103 29,203 1,626,913 SH   DFND N/A 1,626,913 0 0
ENBRIDGE ENERGY PARTNERS L P COM 29250R106 114,903 6,271,976 SH   DFND N/A 5,845,187 0 426,789
ENBRIDGE INC COM 29250N105 137,631 3,537,162 SH   DFND N/A 3,537,162 0 0
ENERGY TRANSFER EQUITY L P COM UT LTD PTN 29273V100 226,489 31,765,665 SH   DFND N/A 27,575,944 0 4,189,721
ENERGY TRANSFER PRTNRS L P UNIT LTD PARTN 29273R109 569,910 17,622,442 SH   DFND N/A 16,515,602 0 1,106,840
ENLINK MIDSTREAM PARTNERS LP COM UNIT REP LTD 29336U107 79,772 6,609,141 SH   DFND N/A 6,609,141 0 0
ENLINK MIDSTREAM LLC COM UNIT REP LTD 29336T100 27,733 2,465,160 SH   DFND N/A 2,465,160 0 0
ENTERPRISE PRODS PARTNERS L COM 293792107 971,104 39,443,695 SH   DFND N/A 35,769,056 0 3,674,639
EOG RES INC COM 26875P101 32,366 445,942 SH   DFND N/A 445,942 0 0
EQT CORP COM 26884L109 21,525 320,027 SH   DFND N/A 320,027 0 0
EQT GP HLDGS LP COM UNIT REP 26885J103 44,860 1,663,330 SH   DFND N/A 1,437,772 0 225,558
EQT MIDSTREAM PARTNERS LP UNIT LTD PARTN 26885B100 603,865 8,113,200 SH   DFND N/A 7,390,690 0 722,510
EXXON MOBIL CORP COM 30231G102 3 35 SH   DFND N/A 35 0 0
FIRST SOLAR INC COM 336433107 3 42 SH   DFND N/A 42 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 12 300 SH   DFND N/A 300 0 0
GENESIS ENERGY L P UNIT LTD PARTN 371927104 240,205 7,555,987 SH   DFND N/A 6,895,593 0 660,394
GULFPORT ENERGY CORP COM NEW 402635304 663 23,399 SH   DFND N/A 23,399 0 0
HALLIBURTON CO COM 406216101 1 26 SH   DFND N/A 26 0 0
HANNON ARMSTRONG SUST INFR C COM 41068X100 26 1,349 SH   DFND N/A 1,349 0 0
HD SUPPLY HLDGS INC COM 40416M105 2 68 SH   DFND N/A 68 0 0
HELMERICH & PAYNE INC COM 423452101 1 23 SH   DFND N/A 23 0 0
HESS CORP COM 42809H107 2,011 38,193 SH   DFND N/A 38,193 0 0
HOLLY ENERGY PARTNERS L P COM UT LTD PTN 435763107 2 72 SH   DFND N/A 72 0 0
HOLLYFRONTIER CORP COM 436106108 1 22 SH   DFND N/A 22 0 0
IDEX CORP COM 45167R104 2 29 SH   DFND N/A 29 0 0
INFRAREIT INC COM 45685L100 1 73 SH   DFND N/A 73 0 0
ITC HLDGS CORP COM 465685105 1 23 SH   DFND N/A 23 0 0
ITRON INC COM 465741106 2 45 SH   DFND N/A 45 0 0
KINDER MORGAN INC DEL COM 49456B101 68,230 3,820,282 SH   DFND N/A 3,820,282 0 0
KINDER MORGAN INC DEL PFD SER A 49456B200 2,027 44,949 SH   DFND N/A 44,949 0 0
LAREDO PETROLEUM INC COM 516806106 436 55,005 SH   DFND N/A 55,005 0 0
LIBERTY PPTY TR SH BEN INT 531172104 15 450 SH   DFND N/A 450 0 0
LINDSAY CORP COM 535555106 0 6 SH   DFND N/A 6 0 0
LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 1,772 20,703 SH   DFND N/A 20,703 0 0
MAGELLAN MIDSTREAM PRTNRS LP COM UNIT RP LP 559080106 980,560 14,252,331 SH   DFND N/A 12,876,473 0 1,375,858
MEMORIAL RESOURCE DEV CORP COM 58605Q109 1,718 168,801 SH   DFND N/A 168,801 0 0
MIX TELEMATICS LTD SPONSORED ADR 60688N102 11 2,680 SH   DFND N/A 2,680 0 0
MPLX LP COM UNIT REP LTD 55336V100 724,277 24,394,644 SH   DFND N/A 22,075,944 0 2,318,700
MRC GLOBAL INC COM 55345K103 1 55 SH   DFND N/A 55 0 0
MUELLER WTR PRODS INC COM SER A 624758108 1 137 SH   DFND N/A 137 0 0
NABORS INDUSTRIES LTD SHS G6359F103 1 90 SH   DFND N/A 90 0 0
NATIONAL FUEL GAS CO N J COM 636180101 24,777 495,046 SH   DFND N/A 495,046 0 0
NATIONAL OILWELL VARCO INC COM 637071101 1 19 SH   DFND N/A 19 0 0
NEWFIELD EXPL CO COM 651290108 8,286 249,188 SH   DFND N/A 249,188 0 0
NEWPARK RES INC COM PAR $.01NEW 651718504 0 91 SH   DFND N/A 91 0 0
NEXTERA ENERGY INC COM 65339F101 7 58 SH   DFND N/A 58 0 0
NEXTERA ENERGY PARTNERS LP COM UNIT PART IN 65341B106 689 25,335 SH   DFND N/A 25,335 0 0
NISOURCE INC COM 65473P105 62,895 2,669,567 SH   DFND N/A 2,669,567 0 0
NOBLE ENERGY INC COM 655044105 10,401 331,130 SH   DFND N/A 331,130 0 0
NORDIC AMERICAN TANKERS LIMI COM G65773106 1 102 SH   DFND N/A 102 0 0
NRG ENERGY INC COM NEW 629377508 1 75 SH   DFND N/A 75 0 0
NRG YIELD INC CL A NEW 62942X306 12 900 SH   DFND N/A 900 0 0
NRG YIELD INC CL C 62942X405 3 218 SH   DFND N/A 218 0 0
NUSTAR ENERGY LP UNIT COM 67058H102 429 10,615 SH   DFND N/A 10,615 0 0
NUSTAR GP HOLDINGS LLC UNIT RESTG LLC 67059L102 104 5,000 SH   DFND N/A 5,000 0 0
OCCIDENTAL PETE CORP DEL COM 674599105 15,494 226,421 SH   DFND N/A 226,421 0 0
ONEOK PARTNERS LP UNIT LTD PARTN 68268N103 512,877 16,333,651 SH   DFND N/A 15,186,355 0 1,147,296
ONEOK INC NEW COM 682680103 236,199 7,910,230 SH   DFND N/A 7,361,202 0 549,028
PATTERN ENERGY GROUP INC CL A 70338P100 23 1,196 SH   DFND N/A 1,196 0 0
PATTERSON UTI ENERGY INC COM 703481101 1 82 SH   DFND N/A 82 0 0
PDC ENERGY INC COM 69327R101 1,190 20,009 SH   DFND N/A 20,009 0 0
PEMBINA PIPELINE CORP COM 706327103 41,385 1,530,863 SH   DFND N/A 1,530,863 0 0
PENTAIR PLC SHS G7S00T104 2 45 SH   DFND N/A 45 0 0
PHILLIPS 66 COM 718546104 1,505 17,379 SH   DFND N/A 17,379 0 0
PHILLIPS 66 PARTNERS LP COM UNIT REP INT 718549207 339,225 5,419,798 SH   DFND N/A 4,827,830 0 591,968
PINNACLE WEST CAP CORP COM 723484101 1 12 SH   DFND N/A 12 0 0
PIONEER NAT RES CO COM 723787107 30,881 219,416 SH   DFND N/A 219,416 0 0
PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 769,002 36,671,511 SH   DFND N/A 33,341,072 0 3,330,439
PLAINS GP HLDGS L P SHS A REP LTPN 72651A108 160,086 18,421,845 SH   DFND N/A 17,834,102 0 587,743
PPL CORP COM 69351T106 4 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 6,752 208,536 SH   DFND N/A 208,536 0 0
RICE ENERGY INC COM 762760106 662 47,390 SH   DFND N/A 47,390 0 0
RICE MIDSTREAM PARTNERS LP UNIT LTD PARTN 762819100 24,916 1,673,328 SH   DFND N/A 1,673,328 0 0
ROSE ROCK MIDSTREAM L P COM U REP LTD 777149105 386 32,489 SH   DFND N/A 32,489 0 0
ROYAL DUTCH SHELL PLC SPONS ADR A 780259206 5,548 114,500 SH   DFND N/A 114,500 0 0
RSP PERMIAN INC COM 74978Q105 1,288 44,354 SH   DFND N/A 44,354 0 0
SCHLUMBERGER LTD COM 806857108 2,421 32,825 SH   DFND N/A 32,825 0 0
SCHNITZER STL INDS CL A 806882106 17 900 SH   DFND N/A 900 0 0
SEMGROUP CORP CL A 81663A105 33,254 1,484,572 SH   DFND N/A 1,484,572 0 0
SEMPRA ENERGY COM 816851109 257 2,471 SH   DFND N/A 2,471 0 0
SHELL MIDSTREAM PARTNERS L P UNIT LTD INT 822634101 363,527 9,929,732 SH   DFND N/A 8,952,652 0 977,080
SOLARCITY CORP COM 83416T100 1 27 SH   DFND N/A 27 0 0
SPECTRA ENERGY CORP COM 847560109 183,106 5,983,866 SH   DFND N/A 5,983,866 0 0
SPECTRA ENERGY PARTNERS LP COM 84756N109 662,338 13,764,299 SH   DFND N/A 12,577,813 0 1,186,486
SUBURBAN PROPANE PARTNERS L UNIT LTD PARTN 864482104 126 4,200 SH   DFND N/A 4,200 0 0
SUNCOR ENERGY INC NEW COM 867224107 8,869 318,929 SH   DFND N/A 318,929 0 0
SUNOCO LOGISTICS PRTNRS L P COM UNITS 86764L108 703,526 28,062,461 SH   DFND N/A 25,514,548 0 2,547,913
SUNPOWER CORP COM 867652406 2 77 SH   DFND N/A 77 0 0
SUNRUN INC COM 86771W105 1 168 SH   DFND N/A 168 0 0
SUPERIOR ENERGY SVCS INC COM 868157108 1 47 SH   DFND N/A 47 0 0
TARGA RES CORP COM 87612G101 144,581 4,841,967 SH   DFND N/A 4,500,742 0 341,225
TEEKAY CORPORATION COM Y8564W103 105 12,100 SH   DFND N/A 12,100 0 0
TEEKAY LNG PARTNERS L P PRTNRSP UNITS Y8564M105 220 17,350 SH   DFND N/A 17,350 0 0
TERRAFORM GLOBAL INC CL A 88104M101 6 2,600 SH   DFND N/A 2,600 0 0
TERRAFORM PWR INC CL A COM 88104R100 16 1,800 SH   DFND N/A 1,800 0 0
TESLA MTRS INC COM 88160R101 2 8 SH   DFND N/A 8 0 0
TESORO CORP COM 881609101 1,964 22,836 SH   DFND N/A 22,836 0 0
TESORO LOGISTICS LP COM UNIT LP 88160T107 456,501 9,997,826 SH   DFND N/A 9,018,578 0 979,248
TETRA TECH INC NEW COM 88162G103 3 117 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 134,332 3,417,236 SH   DFND N/A 3,417,236 0 0
U S SILICA HLDGS INC COM 90346E103 0 21 SH   DFND N/A 21 0 0
VALERO ENERGY CORP NEW COM 91913Y100 1,945 30,324 SH   DFND N/A 30,324 0 0
VALERO ENERGY PARTNERS LP COM UNT REP LP 91914J102 223,540 4,720,022 SH   DFND N/A 4,281,992 0 438,030
VTTI ENERGY PARTNERS LP COM UNIT RP LT Y9384M101 14,218 768,557 SH   DFND N/A 768,557 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 2 37 SH   DFND N/A 37 0 0
WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 88,927 2,495,153 SH   DFND N/A 2,161,857 0 333,296
WESTERN GAS PARTNERS LP COM UNIT LP IN 958254104 560,171 12,904,188 SH   DFND N/A 11,802,377 0 1,101,811
WESTLAKE CHEM CORP COM 960413102 1,071 23,133 SH   DFND N/A 23,133 0 0
WHITING PETE CORP NEW COM 966387102 37 4,657 SH   DFND N/A 4,657 0 0
WILLIAMS COS INC DEL COM 969457100 185,510 11,543,846 SH   DFND N/A 10,700,491 0 843,355
XYLEM INC COM 98419M100 7 181 SH   DFND N/A 181 0 0