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 977 65,033 SH   SOLE   65,033 0 0
ALLETE INC COM NEW 018522300 1,878 24,302 SH   SOLE   24,302 0 0
AMERICAN ELEC PWR INC COM 025537101 535 7,613 SH   SOLE   7,613 0 0
AMERICAN WTR WKS CO INC NEW COM 030420103 3,495 43,201 SH   SOLE   43,201 0 0
ANADARKO PETE CORP COM 032511107 19,009 389,123 SH   SOLE   389,123 0 0
ANDEAVOR COM 03349M105 2,058 19,951 SH   SOLE   19,951 0 0
ANTERO MIDSTREAM GP LP COM SHS REPSTG 03675Y103 25,607 1,250,949 SH   SOLE   1,250,949 0 0
ANTERO MIDSTREAM PARTNERS LP UNT LTD PARTN 03673L103 16,215 514,278 SH   SOLE   514,278 0 0
ANTERO RES CORP COM 03674X106 241 12,124 SH   SOLE   12,124 0 0
AQUA AMERICA INC COM 03836W103 1,607 48,419 SH   SOLE   48,419 0 0
ATLANTICA YIELD PLC SHS G0751N103 3,160 160,419 SH   SOLE   160,419 0 0
ATMOS ENERGY CORP COM 049560105 1,332 15,887 SH   SOLE   15,887 0 0
BAKER HUGHES A GE CO CL A 05722G100 1,124 30,691 SH   SOLE   30,691 0 0
BLACK HILLS CORP COM 092113109 1,128 16,384 SH   SOLE   16,384 0 0
BOARDWALK PIPELINE PARTNERS UT LTD PARTNER 096627104 25,038 1,703,279 SH   SOLE   1,703,279 0 0
CABOT OIL & GAS CORP COM 127097103 4,281 160,053 SH   SOLE   160,053 0 0
CHENIERE ENERGY INC COM NEW 16411R208 30,237 671,345 SH   SOLE   671,345 0 0
CHESAPEAKE ENERGY CORP COM 165167107 466 108,335 SH   SOLE   108,335 0 0
CHEVRON CORP NEW COM 166764100 29,752 253,211 SH   SOLE   253,211 0 0
CIMAREX ENERGY CO COM 171798101 1,540 13,550 SH   SOLE   13,550 0 0
CONCHO RES INC COM 20605P101 9,909 75,224 SH   SOLE   75,224 0 0
CONOCOPHILLIPS COM 20825C104 8,442 168,671 SH   SOLE   168,671 0 0
CONTINENTAL RESOURCES INC COM 212015101 10,382 268,896 SH   SOLE   268,896 0 0
DEVON ENERGY CORP NEW COM 25179M103 1,919 52,286 SH   SOLE   52,286 0 0
DIAMONDBACK ENERGY INC COM 25278X109 27,453 280,252 SH   SOLE   280,252 0 0
ENABLE MIDSTREAM PARTNERS LP COM UNIT RP IN 292480100 12,134 759,328 SH   SOLE   759,328 0 0
ENCANA CORP COM 292505104 304 25,832 SH   SOLE   25,832 0 0
ENERGY TRANSFER EQUITY L P COM UT LTD PTN 29273V100 12,804 736,702 SH   SOLE   736,702 0 0
ENERGY TRANSFER PARTNERS LP UNIT LTD PRT INT 29278N103 21,177 1,157,846 SH   SOLE   1,157,846 0 0
ENLINK MIDSTREAM PARTNERS LP COM UNIT REP LTD 29336U107 226 13,503 SH   SOLE   13,503 0 0
ENTERPRISE PRODS PARTNERS L COM 293792107 27,746 1,064,303 SH   SOLE   1,064,303 0 0
EOG RES INC COM 26875P101 33,729 348,652 SH   SOLE   348,652 0 0
EQT CORP COM 26884L109 4,082 62,573 SH   SOLE   62,573 0 0
EQT MIDSTREAM PARTNERS LP UNIT LTD PARTN 26885B100 4,052 54,047 SH   SOLE   54,047 0 0
EXELON CORP COM 30161N101 1,620 43,011 SH   SOLE   43,011 0 0
EXXON MOBIL CORP COM 30231G102 10,157 123,900 SH   SOLE   123,900 0 0
FAIRMOUNT SANTROL HLDGS INC COM 30555Q108 20,152 4,215,906 SH   SOLE   4,215,906 0 0
FORUM ENERGY TECHNOLOGIES IN COM 34984V100 20,893 1,314,004 SH   SOLE   1,314,004 0 0
GOLAR LNG LTD BERMUDA SHS G9456A100 8,198 362,602 SH   SOLE   362,602 0 0
GREAT PLAINS ENERGY INC COM 391164100 2,684 88,566 SH   SOLE   88,566 0 0
HALLIBURTON CO COM 406216101 35,022 760,843 SH   SOLE   760,843 0 0
KINDER MORGAN INC DEL COM 49456B101 31,480 1,641,295 SH   SOLE   1,641,295 0 0
LAREDO PETROLEUM INC COM 516806106 19,198 1,484,761 SH   SOLE   1,484,761 0 0
MARATHON PETE CORP COM 56585A102 3,045 54,305 SH   SOLE   54,305 0 0
MPLX LP COM UNIT REP LTD 55336V100 14,705 420,020 SH   SOLE   420,020 0 0
NEWFIELD EXPL CO COM 651290108 224 7,538 SH   SOLE   7,538 0 0
NEXTDECADE CORP COM 65342K105 1,925 190,817 SH   SOLE   190,817 0 0
NEXTERA ENERGY INC COM 65339F101 1,719 11,731 SH   SOLE   11,731 0 0
NEXTERA ENERGY PARTNERS LP COM UNIT PART IN 65341B106 1,731 42,971 SH   SOLE   42,971 0 0
NGL ENERGY PARTNERS LP COM UNIT REPST 62913M107 16,429 1,422,432 SH   SOLE   1,422,432 0 0
NOBLE ENERGY INC COM 655044105 2,285 80,559 SH   SOLE   80,559 0 0
NOBLE MIDSTREAM PARTNERS LP COM UNIT REPST 65506L105 8,246 158,980 SH   SOLE   158,980 0 0
OASIS MIDSTREAM PARTNERS LP COM UNITS REPS 67420T206 7,438 438,571 SH   SOLE   438,571 0 0
OASIS PETE INC NEW COM 674215108 27,905 3,059,727 SH   SOLE   3,059,727 0 0
OCCIDENTAL PETE CORP DEL COM 674599105 1,817 28,299 SH   SOLE   28,299 0 0
ONEOK INC NEW COM 682680103 6,730 121,461 SH   SOLE   121,461 0 0
PARSLEY ENERGY INC CL A 701877102 539 20,465 SH   SOLE   20,465 0 0
PATTERN ENERGY GROUP INC CL A 70338P100 926 38,432 SH   SOLE   38,432 0 0
PG&E CORP COM 69331C108 1,993 29,277 SH   SOLE   29,277 0 0
PIONEER NAT RES CO COM 723787107 15,903 107,791 SH   SOLE   107,791 0 0
PLAINS ALL AMERN PIPELINE L UNIT LTD PARTN 726503105 17,565 828,917 SH   SOLE   828,917 0 0
RICE ENERGY INC COM 762760106 1,960 67,728 SH   SOLE   67,728 0 0
RICE MIDSTREAM PARTNERS LP UNIT LTD PARTN 762819100 2,933 140,063 SH   SOLE   140,063 0 0
ROYAL DUTCH SHELL PLC SPONS ADR A 780259206 10,373 171,221 SH   SOLE   171,221 0 0
SCANA CORP NEW COM 80589M102 2,143 44,192 SH   SOLE   44,192 0 0
SCHLUMBERGER LTD COM 806857108 7,280 104,352 SH   SOLE   104,352 0 0
SELECT ENERGY SVCS INC CL A COM 81617J301 9,924 623,356 SH   SOLE   623,356 0 0
SELECT SECTOR SPDR TR ENERGY 81369Y506 774 11,303 SH   SOLE   11,303 0 0
SEMPRA ENERGY COM 816851109 2,352 20,606 SH   SOLE   20,606 0 0
SHELL MIDSTREAM PARTNERS L P UNIT LTD INT 822634101 23,523 844,936 SH   SOLE   844,936 0 0
STATOIL ASA SPONSORED ADR 85771P102 6,131 305,165 SH   SOLE   305,165 0 0
SUMMIT MIDSTREAM PARTNERS LP COM UNIT LTD 866142102 11,909 595,461 SH   SOLE   595,461 0 0
TARGA RES CORP COM 87612G101 22,924 484,654 SH   SOLE   484,654 0 0
TRANSCANADA CORP COM 89353D107 19,321 390,867 SH   SOLE   390,867 0 0
U S SILICA HLDGS INC COM 90346E103 9,882 318,047 SH   SOLE   318,047 0 0
USA COMPRESSION PARTNERS LP COMUNIT LTDPAR 90290N109 5,253 314,155 SH   SOLE   314,155 0 0
VALERO ENERGY PARTNERS LP COM UNT REP LP 91914J102 14,826 339,121 SH   SOLE   339,121 0 0
WEATHERFORD INTL PLC ORD SHS G48833100 24,831 5,421,594 SH   SOLE   5,421,594 0 0
WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 27,863 676,627 SH   SOLE   676,627 0 0
WESTERN GAS PARTNERS LP COM UNIT LP IN 958254104 4,441 86,611 SH   SOLE   86,611 0 0
WESTERN REFNG LOGISTICS LP COM UNIT REP LTP 95931Q205 13,834 536,204 SH   SOLE   536,204 0 0
WILLIAMS COS INC DEL COM 969457100 8,477 282,458 SH   SOLE   282,458 0 0
WILLIAMS PARTNERS L P NEW COM UNIT LTD PAR 96949L105 17,035 437,929 SH   SOLE   437,929 0 0
WPX ENERGY INC COM 98212B103 20,067 1,744,924 SH   SOLE   1,744,924 0 0