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
ALERIAN MLP ETF COM 00162Q866 3 80 SH   SOLE   80 0 0
ANTERO MIDSTREAM PARTNERS LP COM 03673L103 1,512 134,757 SH   SOLE   134,757 0 0
ANDEAVOR LOGISTICS PARTNERS LP COM 03350F106 304,622 6,085,134 SH   SOLE   5,431,647 0 653,487
BUCKEYE PARTNERS LP COM 118230101 198,291 3,478,788 SH   SOLE   3,093,387 0 385,401
BOARDWALK PIPELINE PARTNERS LP COM 096627104 28 1,872 SH   SOLE   1,872 0 0
CRESTWOOD EQUITY PARTNERS LP COM 226344208 46,180 1,892,610 SH   SOLE   1,892,610 0 0
DCP MIDSTREAM LP COM 23311P100 122,307 3,530,816 SH   SOLE   3,530,816 0 0
DOMINION ENERGY MIDSTREAM PA COM 257454108 24,764 773,881 SH   SOLE   411,282 0 362,599
ENBRIDGE ENERGY PARTNERS LP COM 29250R106 104,171 6,518,852 SH   SOLE   5,815,490 0 703,362
ENABLE MIDSTREAM PARTNERS LP COM 292480100 33,014 2,065,987 SH   SOLE   2,065,987 0 0
ENLINK MIDSTREAM PARTNERS LP COM 29336U107 235,047 14,024,298 SH   SOLE   13,029,254 0 995,044
ENTERPRISE PRODUCTS PARTNERS COM 293792107 300,049 11,509,357 SH   SOLE   10,268,234 0 1,241,123
EQT GP HLDGS LP COM COM 26885J103 19 647 SH   SOLE   647 0 0
ENERGY TRANSFER PARTNERS LP COM 29278N103 287,740 15,732,085 SH   SOLE   13,996,900 0 1,735,185
HESS MIDSTREAM PARTNERS LP COM 428104103 19 844 SH   SOLE   844 0 0
KINDER MORGAN INC DEL COM COM 49456B101 28 1,446 SH   SOLE   1,446 0 0
MARTIN MIDSTREAM PARTNERS LP COM 573331105 30,469 1,959,445 SH   SOLE   1,959,445 0 0
MAGELLAN MIDSTREAM PARTNERS COM 559080106 153,751 2,163,683 SH   SOLE   1,927,047 0 236,636
MPLX LP COM 55336V100 307,830 8,792,629 SH   SOLE   7,842,771 0 949,858
NOBLE MIDSTREAM PARTNERS COM 65506L105 30 584 SH   SOLE   584 0 0
NUSTAR ENERGY LP COM 67058H102 189,046 4,657,451 SH   SOLE   4,657,451 0 0
NUSTAR GP HOLDINGS LLC COM 67059L102 25,869 1,175,843 SH   SOLE   687,698 0 488,145
ONEOK INC. COM 682680103 99,520 1,796,060 SH   SOLE   1,604,085 0 191,975
OASIS MIDSTREAM PARTNERS LP COM 67420T206 1,357 80,000 SH   SOLE   80,000 0 0
PLAINS ALL AMER PIPELINE LP COM 726503105 194,011 9,155,804 SH   SOLE   8,163,728 0 992,076
PBF LOGISTICS LP COM 69318Q104 22,846 1,087,920 SH   SOLE   1,087,920 0 0
PHILLIPS 66 PARTNERS LP COM 718549207 70,633 1,343,849 SH   SOLE   1,000,446 0 343,403
SPECTRA ENERGY PARTNERS LP COM 84756N109 202,598 4,565,075 SH   SOLE   4,075,660 0 489,415
SHELL MIDSTREAM PARTNERS LP COM 822634101 29,049 1,043,430 SH   SOLE   653,579 0 389,851
SUMMIT MIDSTREAM PARTNERS LP COM 866142102 28,902 1,445,112 SH   SOLE   1,445,112 0 0
TC PIPELINES LP COM 87233Q108 211,102 4,034,823 SH   SOLE   3,509,484 0 525,339
TARGA RESOURCES CORP COM 87612G101 255,307 5,397,604 SH   SOLE   4,802,949 0 594,655
USA COMPRESSION PARTNERS LP COM 90290N109 31,595 1,889,668 SH   SOLE   1,889,668 0 0
VALERO ENERGY PARTNERS LP COM 91914J102 23,790 544,138 SH   SOLE   294,084 0 250,054
WESTERN GAS PARTNERS LP COM 958254104 208,284 4,061,697 SH   SOLE   3,743,476 0 318,221
WESTERN GAS EQUITY PARTNERS COM 95825R103 35,599 864,477 SH   SOLE   458,542 0 405,935
WESTLAKE CHEMICAL PARTNERS LP COM 960417103 2,083 91,774 SH   SOLE   91,774 0 0
WILLIAMS COS INC COM 969457100 46 1,543 SH   SOLE   1,543 0 0
WESTERN REFINING LOGISTICS L COM 95931Q205 3,502 135,734 SH   SOLE   135,734 0 0
WILLIAMS PARTNERS LP COM 96949L105 248,479 6,387,628 SH   SOLE   5,705,417 0 682,211