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
9F, Inc. SPONSORED ADS 65442R109 37 3,299 SH   SOLE   37 0 0
A10 Networks, Inc. COM 002121101 4 600 SH   SOLE   4 0 0
Aci Worldwide, Inc. COM 004498101 92 2,951 SH   SOLE   92 0 0
Advanced Drainage Systems, Inc. COM 00790R104 84 2,618 SH   SOLE   84 0 0
Aegion Corp. COM 00770F104 43 1,995 SH   SOLE   43 0 0
Akamai Technologies, Inc. COM 00971T101 171 1,874 SH   SOLE   171 0 0
Alibaba Group Holding Ltd. SPONSORED ADS 01609W102 172 1,030 SH   SOLE   172 0 0
Alphabet, Inc. CAP STK CL A 02079K305 180 147 SH   SOLE   180 0 0
Altus Midstream Company CL A 02215L100 184 65,031 SH   SOLE   184 0 0
Amazon.Com, Inc. COM 023135106 172 99 SH   SOLE   172 0 0
American Express Co. COM 025816109 292 2,471 SH   SOLE   292 0 0
American States Water Company COM 029899101 209 2,328 SH   SOLE   209 0 0
American Water Works Company COM 030420103 593 4,776 SH   SOLE   593 0 0
Antero Midstream Corporation COM 03676B102 2,206 298,170 SH   SOLE   2,206 0 0
Aqua America, Inc. COM 03836W103 440 9,817 SH   SOLE   440 0 0
Aquaventure Holdings Ltd. SHS G0443N107 24 1,234 SH   SOLE   24 0 0
Archrock, Inc. COM 03957W106 1,436 143,988 SH   SOLE   1,436 0 0
Atmos Energy Corp COM 049560105 15,508 136,165 SH   SOLE   15,508 0 0
Badger Meter, Inc. COM 056525108 99 1,838 SH   SOLE   99 0 0
Bottomline Technologies De, Inc. COM 101388106 44 1,108 SH   SOLE   44 0 0
Box, Inc. CL A 10316T104 27 1,630 SH   SOLE   27 0 0
BP Midstream Partners, LP. UNIT LTD PTNR 0556EL109 256 17,568 SH   SOLE   256 0 0
Buckeye Partners, L.P. UNIT LTD PARTN 118230101 2,694 65,557 SH   SOLE   2,694 0 0
California Water Service Group COM 130788102 161 3,043 SH   SOLE   161 0 0
Carbon Black, Inc. COM 14081R103 12 474 SH   SOLE   12 0 0
Carbonite, Inc. COM 141337105 5 337 SH   SOLE   5 0 0
Cass Information Systems, Inc. COM 14808P109 19 344 SH   SOLE   19 0 0
Check Point Software Technologies ORD M22465104 155 1,411 SH   SOLE   155 0 0
Cheniere Energy, Inc. COM 16411R208 16,990 269,428 SH   SOLE   16,990 0 0
Cheniere Energy Partners, LP COM UNIT 16411Q101 828 18,203 SH   SOLE   828 0 0
Chesapeake Utilities Corporation COM 165303108 1,716 17,998 SH   SOLE   1,716 0 0
Cia de Saneamento Basico do Es SPONSORED ADR 20441A102 257 21,625 SH   SOLE   257 0 0
Cisco Systems, Inc. COM 17275R102 179 3,621 SH   SOLE   179 0 0
Citrix Systems, Inc. COM 177376100 139 1,441 SH   SOLE   139 0 0
CNX Midstream Partners, LP. COM UNIT REPST 12654A101 253 17,916 SH   SOLE   253 0 0
Commvault Systems, Inc. COM 204166102 20 442 SH   SOLE   20 0 0
Connecticut Water Service, Inc. COM 207797101 52 747 SH   SOLE   52 0 0
Coresite Realty Corp. COM 21870Q105 52 423 SH   SOLE   52 0 0
Crestwood Equity Partners, LP UNIT LTD PARTNER 226344208 769 21,073 SH   SOLE   769 0 0
CrossAmerica Partners, LP UT LTD PTN INT 22758A105 78 4,547 SH   SOLE   78 0 0
Crowdstrike Holdings, Inc. CL A 22788C105 14 240 SH   SOLE   14 0 0
Csg Systems International, Inc. COM 126349109 43 836 SH   SOLE   43 0 0
Cyrusone, Inc. COM 23283R100 103 1,306 SH   SOLE   103 0 0
DCP Midstream, LP COM UT LTD PTN 23311P100 1,030 39,296 SH   SOLE   1,030 0 0
Delek Logistics Partners, LP COM UNT RP INT 24664T103 96 3,059 SH   SOLE   96 0 0
Digital Realty Trust, Inc. COM 253868103 183 1,408 SH   SOLE   183 0 0
Discover Financial Services COM 254709108 280 3,453 SH   SOLE   280 0 0
Docusign, Inc. COM 256163106 230 3,711 SH   SOLE   230 0 0
Dropbox, Inc. CL A 26210C104 50 2,471 SH   SOLE   50 0 0
Elastic Nv ORD SHS N14506104 34 417 SH   SOLE   34 0 0
Enable Midstream Partners, LP COM UNIT RP IN 292480100 290 24,089 SH   SOLE   290 0 0
Enbridge, Inc. COM 29250N105 25,951 739,765 SH   SOLE   25,951 0 0
Energy Transfer, LP COM UT LTD PTN 29273V100 12,568 960,855 SH   SOLE   12,568 0 0
Enlink Midstream, LLC COM UNIT REP LTD 29336T100 2,532 297,880 SH   SOLE   2,532 0 0
Enterprise Products Partners, LP COM 293792107 18,119 633,982 SH   SOLE   18,119 0 0
EQM Midstream Partners, LP UNIT LTD PARTN 26885B100 1,145 35,005 SH   SOLE   1,145 0 0
Equinix, Inc. COM 29444U700 197 342 SH   SOLE   197 0 0
Equitrans Midstream Corporation COM 294600101 3,422 235,169 SH   SOLE   3,422 0 0
Euronet Worldwide, Inc. COM 298736109 199 1,359 SH   SOLE   199 0 0
Evertec, Inc. COM 30040P103 48 1,531 SH   SOLE   48 0 0
Evo Payments, Inc. CL A COM 26927E104 26 920 SH   SOLE   26 0 0
Evoqua Water Technologies Corp. COM 30057T105 62 3,661 SH   SOLE   62 0 0
F5 Networks, Inc. COM 315616102 98 700 SH   SOLE   98 0 0
Fastly, Inc. CL A 31188V100 3 117 SH   SOLE   3 0 0
Fidelity National Information COM 31620M106 295 2,219 SH   SOLE   295 0 0
Fiserv, Inc. COM 337738108 296 2,859 SH   SOLE   296 0 0
Fleetcor Technologies, Inc. COM 339041105 293 1,020 SH   SOLE   293 0 0
Fortinet, Inc. COM 34959E109 131 1,705 SH   SOLE   131 0 0
Franklin Electric Co, Inc. COM 353514102 116 2,433 SH   SOLE   116 0 0
Genesis Energy L.P. UNIT LTD PARTN 371927104 1,008 46,945 SH   SOLE   1,008 0 0
Global Partners LP COM UNITS 37946R109 197 10,055 SH   SOLE   197 0 0
Global Payments, Inc. COM 37940X102 280 1,759 SH   SOLE   280 0 0
Green Dot Corp. CL A 39304D102 31 1,228 SH   SOLE   31 0 0
Greensky, Inc. CL A 39572G100 9 1,308 SH   SOLE   9 0 0
Hess Midstream Partners LP UNIT LTD PR INT 428104103 110 5,723 SH   SOLE   110 0 0
Hewlett Packard Enterprise Co. COM 42824C109 179 11,794 SH   SOLE   179 0 0
Holly Energy Partners, L.P. COM UT LTD PTN 435763107 498 19,726 SH   SOLE   498 0 0
International Business Machine COM 459200101 183 1,261 SH   SOLE   183 0 0
Interxion Holding Nv SHS N47279109 72 880 SH   SOLE   72 0 0
J2 Global, Inc. COM 48123V102 49 537 SH   SOLE   49 0 0
Jack Henry & Associates, Inc. COM 426281101 289 1,983 SH   SOLE   289 0 0
Juniper Networks, Inc. COM 48203R104 99 3,993 SH   SOLE   99 0 0
Kinder Morgan, Inc. COM 49456B101 25,871 1,255,267 SH   SOLE   25,871 0 0
Lendingclub Corp. COM 52603A208 29 2,215 SH   SOLE   29 0 0
Magellan Midstream Partners, LP COM UNIT RP LP 559080106 6,447 97,281 SH   SOLE   6,447 0 0
MasterCard Incorporated CL A 57636Q104 293 1,080 SH   SOLE   293 0 0
Microsoft Corp COM 594918104 185 1,330 SH   SOLE   185 0 0
Middlesex Water Co. COM 596680108 67 1,031 SH   SOLE   67 0 0
Mobileiron, Inc. COM 60739U204 7 1,099 SH   SOLE   7 0 0
MPLX LP COM UNIT REP LTD 55336V100 4,540 162,098 SH   SOLE   4,540 0 0
Mueller Water Products, Inc. COM SER A 624758108 113 10,017 SH   SOLE   113 0 0
National Fuel Gas Co. COM 636180101 4,672 99,584 SH   SOLE   4,672 0 0
Ncr Corp COM 62886E108 97 3,083 SH   SOLE   97 0 0
Netapp, Inc. COM 64110D104 145 2,768 SH   SOLE   145 0 0
Netscout Systems, Inc. COM 64115T104 20 850 SH   SOLE   20 0 0
New Fortress Energy, LLC CL A SHS RP LLC 644393100 319 17,710 SH   SOLE   319 0 0
New Jersey Resources Corporation COM 646025106 4,687 103,648 SH   SOLE   4,687 0 0
Nisource, Inc. COM 65473P105 12,882 430,562 SH   SOLE   12,882 0 0
Noble Midstream Partners LP COM UNIT REPST 65506L105 228 9,456 SH   SOLE   228 0 0
Northwest Natural Holding Co. COM 66765N105 2,485 34,840 SH   SOLE   2,485 0 0
NuStar Energy L.P. UNIT COM 67058H102 1,108 39,135 SH   SOLE   1,108 0 0
Nutanix, Inc. CL A 67059N108 46 1,769 SH   SOLE   46 0 0
Oasis Midstream Partners LP COM UNITS REPS 67420T206 66 4,121 SH   SOLE   66 0 0
Okta, Inc. CL A 679295105 120 1,222 SH   SOLE   120 0 0
ONE Gas, Inc. COM 68235P108 5,832 60,679 SH   SOLE   5,832 0 0
ONEOK, Inc. COM 682680103 25,588 347,237 SH   SOLE   25,588 0 0
Onespan, Inc. COM 68287N100 12 840 SH   SOLE   12 0 0
Oracle Corp. COM 68389X105 177 3,219 SH   SOLE   177 0 0
Pagseguro Digital Ltd COM CL A G68707101 195 4,218 SH   SOLE   195 0 0
Paypal Holdings, Inc. COM 70450Y103 290 2,803 SH   SOLE   290 0 0
PBF Logistics LP UNIT LTD PTNR 69318Q104 281 13,291 SH   SOLE   281 0 0
Pembina Pipeline Corp. COM 706327103 21,849 589,416 SH   SOLE   21,849 0 0
PENTAIR, INC. SHS G7S00T104 306 8,108 SH   SOLE   306 0 0
Phillips 66 Partners LP COM 718549207 2,397 42,342 SH   SOLE   2,397 0 0
Pivotal Software, Inc. COM CL A 72582H107 12 822 SH   SOLE   12 0 0
Plains All American Pipeline UNIT LTD PARTN 726503105 3,857 185,893 SH   SOLE   3,857 0 0
Plains GP Holdings, L.P. LTD PARTNR INT A 72651A207 1,504 70,841 SH   SOLE   1,504 0 0
Q2 Holdings, Inc. COM 74736L109 87 1,108 SH   SOLE   87 0 0
Qiwi Plc SPON ADR REP B 74735M108 28 1,271 SH   SOLE   28 0 0
Qts Realty Trust, Inc. COM CL A 74736A103 33 634 SH   SOLE   33 0 0
Qualys, Inc. COM 74758T303 29 384 SH   SOLE   29 0 0
Radware Ltd. ORD M81873107 10 423 SH   SOLE   10 0 0
Rattler Midstream Partners LP COM UNITS 75419T103 295 16,546 SH   SOLE   295 0 0
Rexnord Corp. COM 76169B102 179 6,635 SH   SOLE   179 0 0
Semgroup Corp. CL A 81663A105 1,210 74,032 SH   SOLE   1,210 0 0
Shell Midstream Partners LP UNIT LTD INT 822634101 1,096 53,576 SH   SOLE   1,096 0 0
Sjw Corp. COM 784305104 101 1,477 SH   SOLE   101 0 0
SolarWinds, Inc. COM 83417Q105 10 546 SH   SOLE   10 0 0
South Jersey Industries, Inc. COM 838518108 3,507 106,552 SH   SOLE   3,507 0 0
Southwest Gas Corporation COM 844895102 5,683 62,421 SH   SOLE   5,683 0 0
Spire, Inc. COM 84857L101 5,091 58,357 SH   SOLE   5,091 0 0
Splunk, Inc. COM 848637104 188 1,591 SH   SOLE   188 0 0
Sprague Resources, LP COM UNIT REP LTD 849343108 64 3,631 SH   SOLE   64 0 0
Square, Inc. CL A 852234103 305 4,926 SH   SOLE   305 0 0
Stoneco Ltd COM CL A G85158106 92 2,635 SH   SOLE   92 0 0
Sunoco LP COM UT REP LP 86765K109 770 24,481 SH   SOLE   770 0 0
Tallgrass Energy LP CLASS A SHS 874696107 1,286 63,873 SH   SOLE   1,286 0 0
Targa Resources Corp. COM 87612G101 10,788 268,557 SH   SOLE   10,788 0 0
TC Energy Corp. COM 87807B107 26,599 513,597 SH   SOLE   26,599 0 0
TC PipeLines, LP UT COM LTD PRT 87233Q108 934 22,967 SH   SOLE   934 0 0
Tenable Holdings, Inc. COM 88025T102 10 438 SH   SOLE   10 0 0
Teradata Corp. COM 88076W103 41 1,309 SH   SOLE   41 0 0
The York Water Co. COM 987184108 36 817 SH   SOLE   36 0 0
USA Compression Partners LP COMUNIT LTDPAR 90290N109 362 20,982 SH   SOLE   362 0 0
USD Partners LP COM UT REP LTD 903318103 44 4,203 SH   SOLE   44 0 0
VISA, Inc. COM CL A 92826C839 286 1,663 SH   SOLE   286 0 0
Vmware, Inc. CL A COM 928563402 134 892 SH   SOLE   134 0 0
Watts Water Technologies, Inc. CL A 942749102 164 1,749 SH   SOLE   164 0 0
Western Midstream Partners LP COM UNIT LP INT 958669103 2,113 84,896 SH   SOLE   2,113 0 0
Western Union Co/The COM 959802109 254 10,944 SH   SOLE   254 0 0
Wex, Inc. COM 96208T104 225 1,112 SH   SOLE   225 0 0
Williams Companies, Inc. COM 969457100 24,798 1,030,677 SH   SOLE   24,798 0 0
Xylem Inc. COM 98419M100 582 7,304 SH   SOLE   582 0 0
Yext Inc. COM 98585N106 16 1,018 SH   SOLE   16 0 0
Yiren Digital Ltd. SPONSORED ADR 98585L100 17 2,406 SH   SOLE   17 0 0
Zscaler, Inc. COM 98980G102 30 637 SH   SOLE   30 0 0
Zuora, Inc. COM CL A 98983V106 30 1,971 SH   SOLE   30 0 0