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
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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
A10 Networks, Inc. COM 002121101 3 400 SH   SOLE   400 0 0
Aci Worldwide, Inc. COM 004498101 56 1,628 SH   SOLE   1,628 0 0
Advanced Drainage Systems, Inc. COM 00790R104 42 1,284 SH   SOLE   1,284 0 0
Aegion Corp. COM 00770F104 22 1,197 SH   SOLE   1,197 0 0
Akamai Technologies, Inc. COM 00971T101 88 1,099 SH   SOLE   1,099 0 0
Alibaba Group Holding Ltd. SPONSORED ADS 01609W102 126 746 SH   SOLE   746 0 0
Alphabet, Inc. CAP STK CL A 02079K305 119 110 SH   SOLE   110 0 0
Altus Midstream Company CL A 02215L100 239 64,368 SH   SOLE   64,368 0 0
Amazon.Com, Inc. COM 023135106 121 64 SH   SOLE   64 0 0
American Express Co. COM 025816109 204 1,652 SH   SOLE   1,652 0 0
American States Water Company COM 029899101 100 1,334 SH   SOLE   1,334 0 0
American Water Works Company COM 030420103 330 2,843 SH   SOLE   2,843 0 0
Andeavor Logistics, L.P. COM UNIT LP INT 03350F106 1,383 38,071 SH   SOLE   38,071 0 0
Antero Midstream Corporation COM 03676B102 2,862 249,742 SH   SOLE   249,742 0 0
Aqua America, Inc. COM 03836W103 179 4,316 SH   SOLE   4,316 0 0
Aquaventure Holdings Ltd SHS G0443N107 10 497 SH   SOLE   497 0 0
Archrock, Inc. COM 03957W106 1,511 142,521 SH   SOLE   142,521 0 0
Atmos Energy Corp COM 049560105 13,505 127,939 SH   SOLE   127,939 0 0
Badger Meter, Inc. COM 056525108 69 1,163 SH   SOLE   1,163 0 0
Bottomline Technologies De, Inc. COM 101388106 28 625 SH   SOLE   625 0 0
Box, Inc. CL A 10316T104 17 989 SH   SOLE   989 0 0
BP Midstream Partners, L.P. UNIT LTD PTNR 0556EL109 269 17,391 SH   SOLE   17,391 0 0
Buckeye Partners, L.P. UNIT LTD PARTN 118230101 2,720 66,258 SH   SOLE   66,258 0 0
California Water Service Group COM 130788102 98 1,928 SH   SOLE   1,928 0 0
Carbon Black, Inc. COM 14081R103 5 316 SH   SOLE   316 0 0
Carbonite, Inc. COM 141337105 6 225 SH   SOLE   225 0 0
Cass Information Systems, Inc. COM 14808P109 9 192 SH   SOLE   192 0 0
Check Point Software Technology ORD M22465104 98 847 SH   SOLE   847 0 0
Cheniere Energy, Inc. COM 16411R208 16,540 241,635 SH   SOLE   241,635 0 0
Cheniere Energy Partners, L.P. COM UNIT 16411Q101 760 18,020 SH   SOLE   18,020 0 0
Chesapeake Utilities Corporation COM 165303108 1,693 17,815 SH   SOLE   17,815 0 0
Cia de Saneamento Basico do Es SPONSORED ADR 20441A102 137 11,276 SH   SOLE   11,276 0 0
Cisco Systems, Inc. COM 17275R102 117 2,137 SH   SOLE   2,137 0 0
Citrix Systems, Inc. COM 177376100 87 883 SH   SOLE   883 0 0
CNX Midstream Partners, L.P. COM UNIT REPST 12654A101 137 9,739 SH   SOLE   9,739 0 0
Commvault Systems, Inc. COM 204166102 15 295 SH   SOLE   295 0 0
Connecticut Water Service, Inc. COM 207797101 31 449 SH   SOLE   449 0 0
Coresite Realty Corp COM 21870Q105 29 256 SH   SOLE   256 0 0
Crestwood Equity Partners, L.P. UNIT LTD PARTNER 226344208 746 20,860 SH   SOLE   20,860 0 0
CrossAmerica Partners, L.P. UT LTD PTN INT 22758A105 172 10,746 SH   SOLE   10,746 0 0
Csg Systems International, Inc. COM 126349109 23 477 SH   SOLE   477 0 0
Cyrusone, Inc. COM 23283R100 46 794 SH   SOLE   794 0 0
DCP Midstream, L.P. COM UT LTD PTN 23311P100 1,140 38,897 SH   SOLE   38,897 0 0
Delek Logistics Partners, L.P. COM UNT RP INT 24664T103 97 3,029 SH   SOLE   3,029 0 0
Digital Realty Trust, Inc. COM 253868103 118 999 SH   SOLE   999 0 0
Discover Financial Services COM 254709108 201 2,590 SH   SOLE   2,590 0 0
Docusign, Inc. COM 256163106 92 1,859 SH   SOLE   1,859 0 0
Dropbox, Inc. CL A 26210C104 34 1,361 SH   SOLE   1,361 0 0
Elastic Nv ORD SHS N14506104 16 208 SH   SOLE   208 0 0
Enable Midstream Partners, L.P. COM UNIT RP IN 292480100 216 15,756 SH   SOLE   15,756 0 0
Enbridge, Inc. COM 29250N105 26,727 740,764 SH   SOLE   740,764 0 0
Energy Transfer, L.P. COM UT LTD PTN 29273V100 14,392 1,022,144 SH   SOLE   1,022,144 0 0
Enlink Midstream, L.L.C. COM UNIT REP LTD 29336T100 2,850 282,456 SH   SOLE   282,456 0 0
Enterprise Products Partners, L.P. COM 293792107 18,627 645,193 SH   SOLE   645,193 0 0
EQM Midstream Partners, L.P. UNIT LTD PARTN 26885B100 1,252 28,018 SH   SOLE   28,018 0 0
Equinix, Inc. COM 29444U700 119 236 SH   SOLE   236 0 0
Equitrans Midstream Corporation COM 294600101 4,384 222,446 SH   SOLE   222,446 0 0
Euronet Worldwide, Inc. COM 298736109 127 757 SH   SOLE   757 0 0
Evertec, Inc. COM 30040P103 29 874 SH   SOLE   874 0 0
Evo Payments, Inc. CL A COM 26927E104 15 474 SH   SOLE   474 0 0
Evoqua Water Technologies Corp COM 30057T105 31 2,197 SH   SOLE   2,197 0 0
F5 Networks, Inc. COM 315616102 60 412 SH   SOLE   412 0 0
Fastly, Inc. CL A 31188V100 2 78 SH   SOLE   78 0 0
Fidelity National Information COM 31620M106 205 1,667 SH   SOLE   1,667 0 0
First Data Corp COM CL A 32008D106 205 7,555 SH   SOLE   7,555 0 0
Fiserv, Inc. COM 337738108 204 2,243 SH   SOLE   2,243 0 0
Fleetcor Technologies, Inc. COM 339041105 211 751 SH   SOLE   751 0 0
Fortinet, Inc. COM 34959E109 76 995 SH   SOLE   995 0 0
Franklin Electric Co, Inc. COM 353514102 81 1,715 SH   SOLE   1,715 0 0
Genesis Energy, L.P. UNIT LTD PARTN 371927104 1,018 46,468 SH   SOLE   46,468 0 0
Global Partners, L.P. COM UNITS 37946R109 198 9,953 SH   SOLE   9,953 0 0
Global Payments, Inc. COM 37940X102 203 1,267 SH   SOLE   1,267 0 0
Green Dot Corp CL A 39304D102 35 715 SH   SOLE   715 0 0
Greensky, Inc. CL A 39572G100 8 682 SH   SOLE   682 0 0
Hess Midstream Partners, L.P. UNIT LTD PR INT 428104103 110 5,666 SH   SOLE   5,666 0 0
Hewlett Packard Enterprise Co. COM 42824C109 126 8,443 SH   SOLE   8,443 0 0
Holly Energy Partners, L.P. COM UT LTD PTN 435763107 537 19,525 SH   SOLE   19,525 0 0
International Business Machine COM 459200101 122 885 SH   SOLE   885 0 0
Interxion Holding Nv SHS N47279109 38 497 SH   SOLE   497 0 0
J2 Global, Inc. COM 48123V102 29 323 SH   SOLE   323 0 0
Jack Henry & Associates, Inc. COM 426281101 157 1,169 SH   SOLE   1,169 0 0
Juniper Networks, Inc. COM 48203R104 63 2,383 SH   SOLE   2,383 0 0
Kinder Morgan, Inc. COM 49456B101 25,943 1,242,460 SH   SOLE   1,242,460 0 0
Magellan Midstream Partners, L.P. COM UNIT RP LP 559080106 6,337 99,019 SH   SOLE   99,019 0 0
MasterCard Incorporated CL A 57636Q104 202 763 SH   SOLE   763 0 0
Microsoft Corp COM 594918104 122 907 SH   SOLE   907 0 0
Middlesex Water Co COM 596680108 37 619 SH   SOLE   619 0 0
Mobileiron, Inc. COM 60739U204 4 572 SH   SOLE   572 0 0
MPLX, L.P. COM UNIT REP LTD 55336V100 3,964 123,144 SH   SOLE   123,144 0 0
Mueller Water Products, Inc. COM SER A 624758108 65 6,630 SH   SOLE   6,630 0 0
National Fuel Gas Co COM 636180101 4,970 94,210 SH   SOLE   94,210 0 0
Ncr Corp COM 62886E108 56 1,791 SH   SOLE   1,791 0 0
Netapp, Inc. COM 64110D104 107 1,727 SH   SOLE   1,727 0 0
Netscout Systems, Inc. COM 64115T104 12 486 SH   SOLE   486 0 0
New Fortress Energy, L.L.C. CL A SHS RP 644393100 259 22,134 SH   SOLE   22,134 0 0
New Jersey Resources Corporation COM 646025106 4,834 97,119 SH   SOLE   97,119 0 0
Nisource, Inc. COM 65473P105 11,741 407,667 SH   SOLE   407,667 0 0
Noble Midstream Partners, L.P. COM UNIT REPST 65506L105 311 9,360 SH   SOLE   9,360 0 0
Northwest Natural Holding Co. COM 66765N105 2,238 32,195 SH   SOLE   32,195 0 0
NuStar Energy, L.P. UNIT COM 67058H102 1,051 38,736 SH   SOLE   38,736 0 0
Nutanix, Inc. CL A 67059N108 26 1,003 SH   SOLE   1,003 0 0
Oasis Midstream Partners, L.P. COM UNITS RES 67420T206 88 4,079 SH   SOLE   4,079 0 0
Okta, Inc. CL A 679295105 87 708 SH   SOLE   708 0 0
ONE Gas, Inc. COM 68235P108 5,173 57,282 SH   SOLE   57,282 0 0
ONEOK, Inc. COM 682680103 27,028 392,794 SH   SOLE   392,794 0 0
Onespan, Inc. COM 68287N100 7 471 SH   SOLE   471 0 0
Oracle Corp COM 68389X105 127 2,226 SH   SOLE   2,226 0 0
Pagseguro Digital Ltd COM CL A G68707101 100 2,570 SH   SOLE   2,570 0 0
Paypal Holdings, Inc. COM 70450Y103 201 1,760 SH   SOLE   1,760 0 0
PBF Logistics, L.P. UNIT LTD PTNR 69318Q104 278 13,156 SH   SOLE   13,156 0 0
Pembina Pipeline Corp COM 706327103 20,816 559,165 SH   SOLE   559,165 0 0
PENTAIR, INC. SHS G7S00T104 187 5,021 SH   SOLE   5,021 0 0
Phillips 66 Partners, L.P. COM UNIT REP INT 718549207 1,132 22,931 SH   SOLE   22,931 0 0
Pivotal Software, Inc. COM CL A 72582H107 6 548 SH   SOLE   548 0 0
Plains All American Pipeline, L.P. UNIT LTD PARTN 726503105 4,571 187,739 SH   SOLE   187,739 0 0
Plains GP Holdings, L.P. LTD PARTNR INT A 72651A207 4,349 174,174 SH   SOLE   174,174 0 0
Q2 Holdings, Inc. COM 74736L109 51 667 SH   SOLE   667 0 0
Qiwi Plc SPON ADR REP B 74735M108 14 692 SH   SOLE   692 0 0
Qts Realty Trust, Inc. COM CL A 74736A103 18 383 SH   SOLE   383 0 0
Qualys, Inc. COM 74758T303 20 231 SH   SOLE   231 0 0
Radware Ltd ORD M81873107 7 282 SH   SOLE   282 0 0
Rattler Midstream Partners, L.P. COM UNITS 75419T103 318 16,378 SH   SOLE   16,378 0 0
Red Hat, Inc. COM 756577102 121 642 SH   SOLE   642 0 0
Rexnord Corp COM 76169B102 115 3,802 SH   SOLE   3,802 0 0
Semgroup Corp CL A 81663A105 879 73,279 SH   SOLE   73,279 0 0
Shell Midstream Partners, L.P. UNIT LTD INT 822634101 1,099 53,030 SH   SOLE   53,030 0 0
Sjw Corp COM 784305104 54 887 SH   SOLE   887 0 0
SolarWinds, Inc. COM 83417Q105 7 364 SH   SOLE   364 0 0
South Jersey Industries, Inc. COM 838518108 3,412 101,144 SH   SOLE   101,144 0 0
Southwest Gas Corporation COM 844895102 5,186 57,866 SH   SOLE   57,866 0 0
Spire, Inc. COM 84857L101 4,661 55,537 SH   SOLE   55,537 0 0
Splunk, Inc. COM 848637104 129 1,027 SH   SOLE   1,027 0 0
Sprague Resources, L.P. COM UNIT REP LTD 849343108 64 3,595 SH   SOLE   3,595 0 0
Square, Inc. CL A 852234103 207 2,859 SH   SOLE   2,859 0 0
Stoneco Ltd COM CL A G85158106 50 1,691 SH   SOLE   1,691 0 0
Sunoco, L.P. COM UT REP LP 86765K109 758 24,232 SH   SOLE   24,232 0 0
Tallgrass Energy, L.P. CLASS A SHS 874696107 3,321 157,304 SH   SOLE   157,304 0 0
Targa Resources Corp. COM 87612G101 9,984 254,296 SH   SOLE   254,296 0 0
TC Energy Corp. COM 87807B107 25,632 517,603 SH   SOLE   517,603 0 0
TC PipeLines, L.P. UT COM LTD PRT 87233Q108 855 22,733 SH   SOLE   22,733 0 0
Teradata Corp COM 88076W103 28 778 SH   SOLE   778 0 0
The York Water Co COM 987184108 18 491 SH   SOLE   491 0 0
Tortoise Cloud Infrastructure TORTOISE CLOUD 56167N555 2,560 95,000 SH   SOLE   95,000 0 0
Tortoise Digital Payments Infrastructure Fund TORTOISE DIGIT 56167N548 2,863 95,000 SH   SOLE   95,000 0 0
Tortoise North American Pipeline TORTOISE NRAM PI 56167N720 98 4,100 SH   SOLE   4,100 0 0
Total System Services, Inc. COM 891906109 203 1,582 SH   SOLE   1,582 0 0
USA Compression Partners, L.P. COMUNIT LTDPAR 90290N109 218 12,242 SH   SOLE   12,242 0 0
USD Partners, L.P. COM UT REP LTD 903318103 47 4,161 SH   SOLE   4,161 0 0
VISA, Inc. COM CL A 92826C839 204 1,174 SH   SOLE   1,174 0 0
Vmware, Inc. CL A COM 928563402 87 520 SH   SOLE   520 0 0
Watts Water Technologies, Inc. CL A 942749102 91 977 SH   SOLE   977 0 0
Western Midstream Partners, L.P. COM UNIT LP INT 958669103 2,703 87,839 SH   SOLE   87,839 0 0
Western Union Co/The COM 959802109 129 6,465 SH   SOLE   6,465 0 0
Wex, Inc. COM 96208T104 142 682 SH   SOLE   682 0 0
Williams Companies, Inc. COM 969457100 25,997 927,125 SH   SOLE   927,125 0 0
Worldpay, Inc. CL A 981558109 202 1,646 SH   SOLE   1,646 0 0
Xylem, Inc. COM 98419M100 347 4,150 SH   SOLE   4,150 0 0
Yext, Inc. COM 98585N106 11 556 SH   SOLE   556 0 0
Yirendai Ltd SPONSORED ADR 98585L100 12 903 SH   SOLE   903 0 0
Zscaler, Inc. COM 98980G102 29 384 SH   SOLE   384 0 0
Zuora, Inc. COM CL A 98983V106 19 1,216 SH   SOLE   1,216 0 0