NPORT-P false 0001014913 XXXXXXXX S000035417 C000108790 C000167328 Frontier Funds, Inc. 811-07685 0001014913 549300TMAADQMXZCXG08 400 Skokie Blvd Suite 500 Northbrook 60062-2815 847-509-9860 Frontier MFG Core Infrastructure Fund S000035417 54930024JUVLTGGBLV83 2022-06-30 2022-06-30 N 686536004.810000000000 606683.370000000000 685929321.440000000000 0.000000000000 0.000000000000 0.000000000000 0.000000000000 0.000000000000 0.000000000000 0.000000000000 0.000000000000 0.000000000000 0.000000000000 0.000000000000 0.000000000000 0.000000000000 1007995.750000000000 N ALLETE Inc 549300NNLSIMY6Z8OT86 018522300 17968.000000000000 NS USD 1056159.040000000000 0.1539749078 Long EC CORP US N 1 N N N Alliant Energy Corp 5493009ML300G373MZ12 018802108 84537.000000000000 NS USD 4954713.570000000000 0.7223358756 Long EC CORP US N 1 N N N Ameren Corp XRZQ5S7HYJFPHJ78L959 023608102 86990.000000000000 NS USD 7860416.400000000000 1.1459513618 Long EC CORP US N 1 N N N American Electric Power Co Inc 1B4S6S7G0TW5EE83BO58 025537101 145494.000000000000 NS USD 13958694.360000000000 2.0350047627 Long EC CORP US N 1 N N N American States Water Co 529900L26LIS2V8PWM23 029899101 14431.000000000000 NS USD 1176270.810000000000 0.1714857163 Long EC CORP US N 1 N N N American Tower Corp 5493006ORUSIL88JOE18 03027X100 57724.000000000000 NS USD 14753677.160000000000 2.1509034093 Long EC CORP US N 1 N N N American Water Works Co Inc 549300DXHIJQMD5WFW18 030420103 61260.000000000000 NS USD 9113650.200000000000 1.3286573288 Long EC CORP US N 1 N N N Atmos Energy Corp QVLWEGTD2S8GJMO8D383 049560105 48526.000000000000 NS USD 5439764.600000000000 0.7930503085 Long EC CORP US N 1 N N N Italgas SpA 815600F25FF44EF1FA76 T6R89Z103 765333.000000000000 NS 4455299.310000000000 0.6495274616 Long EC CORP IT N 1 N N N Red Electrica Corp SA 5493009HMD0C90GUV498 E42807110 511087.000000000000 NS 9654115.500000000000 1.4074504761 Long EC CORP ES N 1 N N N National Grid PLC 8R95QZMKZLJX5Q2XR704 G6S9A7120 1481424.000000000000 NS 18971114.050000000000 2.7657534759 Long EC CORP GB N 1 N N N Hicl Infrastructure PLC 213800BVXR1E5L7PEV94 G44393109 1829501.000000000000 NS 3834983.650000000000 0.5590931208 Long EC RF GB N 1 N N N TC Energy Corp 549300UGKOFV2IWJJG27 87807B107 385902.000000000000 NS 19990634.990000000000 2.9143870024 Long EC CORP CA N 1 N N N Auckland International Airport 549300HFZIZDJWB7AK60 Q06213146 1391082.000000000000 NS 6237996.910000000000 0.9094226934 Long EC CORP NZ N 1 N N N Pennon Group PLC 213800V1CCTS41GWH423 G8295T239 250174.000000000000 NS 2900713.760000000000 0.4228881416 Long EC CORP GB N 1 N N N Aena SME SA 959800R7QMXKF0NFMT29 E526K0106 141684.000000000000 NS 18003002.390000000000 2.6246147857 Long EC CORP ES N 1 N N N Cellnex Telecom SA 5493008T4YG3AQUI7P67 E2R41M104 484133.999999000000 NS 18787183.540000000000 2.7389386855 Long EC CORP ES N 1 N N N Flughafen Zurich AG 529900PFO97GCN5SYB55 H26552135 29000.000000000000 NS 4383491.330000000000 0.6390587475 Long EC CORP CH N 1 N N N Hydro One Ltd 5493007QZDXTP1W2VL44 448811208 565521.000000000000 NS 15205626.020000000000 2.2167919558 Long EC CORP CA N 1 N N N Atlas Arteria Ltd N/A Q06180105 905896.000000000000 NS 5039876.970000000000 0.7347516446 Long EC CORP AU N 1 N N N Avangrid Inc 549300OX0Q38NLSKPB49 05351W103 130312.000000000000 NS USD 6009989.440000000000 0.8761820281 Long EC CORP US N 1 N N N Avista Corp Q0IK63NITJD6RJ47SW96 05379B107 28270.000000000000 NS USD 1230027.700000000000 0.1793228051 Long EC CORP US N 1 N N N Black Hills Corp 3MGELCRSTNSAMJ962671 092113109 21285.000000000000 NS USD 1548909.450000000000 0.2258118149 Long EC CORP US N 1 N N N CMS Energy Corp 549300IA9XFBAGNIBW29 125896100 97789.000000000000 NS USD 6600757.500000000000 0.9623086947 Long EC CORP US N 1 N N N California Water Service Group 529900QABDOBU6UVRQ36 130788102 19450.000000000000 NS USD 1080447.500000000000 0.1575158644 Long EC CORP US N 1 N N N CenterPoint Energy Inc 21TPXMRRHFKOBHDC8J74 15189T107 212152.000000000000 NS USD 6275456.160000000000 0.9148837881 Long EC CORP US N 1 N N N Chesapeake Utilities Corp 254900WW0FDCKAOCKE74 165303108 6133.000000000000 NS USD 794530.150000000000 0.1158326558 Long EC CORP US N 1 N N N Consolidated Edison Inc 54930033SBW53OO8T749 209115104 119414.000000000000 NS USD 11356271.400000000000 1.6556037255 Long EC CORP US N 1 N N N Canadian Utilities Ltd LWV4QIQODEH3VBHUFX07 136717832 186465.000000000000 NS 5561211.430000000000 0.8107557523 Long EC CORP CA N 1 N N N Crown Castle International Cor 54930012H97VSM0I2R19 22822V101 77706.000000000000 NS USD 13084136.280000000000 1.9075050258 Long EC CORP US N 1 N N N Aguas Andinas SA N/A P4171M125 5274187.000000000000 NS 848617.350000000000 0.1237178997 Long EC CORP CL N 1 N N N DTE Energy Co 549300IX8SD6XXD71I78 233331107 65301.000000000000 NS USD 8276901.750000000000 1.2066697678 Long EC CORP US N 1 N N N Fortis Inc/Canada 549300MQYQ9Y065XPR71 349553107 437962.000000000000 NS 20703843.770000000000 3.0183640097 Long EC CORP CA N 1 N N N PINFRA 52990035X6RK8DBUWA73 P7925L103 379114.000000000000 NS 2787528.090000000000 0.4063870727 Long EC CORP MX N 1 N N N Enbridge Inc 98TPTUM4IVMFCZBCUR27 29250N105 472321.000000000000 NS 19946682.380000000000 2.9079792562 Long EC CORP CA N 1 N N N Dominion Energy Inc ILUL7B6Z54MRYCF6H308 25746U109 171381.000000000000 NS USD 13677917.610000000000 1.9940709899 Long EC CORP US N 1 N N N Grupo Aeroportuario del Surest 5299001W7JIDXCUOUC82 P4950Y100 261707.000000000000 NS 5158918.510000000000 0.7521064268 Long EC CORP MX N 1 N N N Duke Energy Corp I1BZKREC126H0VB1BL91 26441C204 130241.000000000000 NS USD 13963137.610000000000 2.0356525335 Long EC CORP US N 1 N N N Emera Inc NQZVQT2P5IUF2PGA1Q48 290876101 249088.000000000000 NS 11668743.320000000000 1.7011582615 Long EC CORP CA N 1 N N N Entergy Corp 4XM3TW50JULSLG8BNC79 29364G103 68547.000000000000 NS USD 7721134.080000000000 1.1256457245 Long EC CORP US N 1 N N N Essential Utilities Inc 549300ILTEOF3E3QY357 29670G102 90285.000000000000 NS USD 4139567.250000000000 0.6034976375 Long EC CORP US N 1 N N N Evergy Inc 549300PGTHDQY6PSUI61 30034W106 77346.000000000000 NS USD 5046826.500000000000 0.7357648000 Long EC CORP US N 1 N N N Eversource Energy SJ7XXD41SQU3ZNWUJ746 30040W108 116241.000000000000 NS USD 9818877.270000000000 1.4314707016 Long EC CORP US N 1 N N N FirstEnergy Corp 549300SVYJS666PQJH88 337932107 192433.000000000000 NS USD 7387502.870000000000 1.0770064260 Long EC CORP US N 1 N N N IDACORP Inc N134NUJDWN8UEFA8B673 451107106 16506.000000000000 NS USD 1748315.520000000000 0.2548827504 Long EC CORP US N 1 N N N MGE Energy Inc N/A 55277P104 13509.000000000000 NS USD 1051405.470000000000 0.1532818961 Long EC CORP US N 1 N N N ACEA SpA 549300Q3448N041CTH56 T0040K106 212833.000000000000 NS 3147084.200000000000 0.4588059005 Long EC CORP IT N 1 N N N Koninklijke Vopak NV 724500UL634GFV1KYF10 N5075T159 118774.000000000000 NS 2997231.220000000000 0.4369591919 Long EC CORP NL N 1 N N N Middlesex Water Co N/A 596680108 7030.000000000000 NS USD 616390.400000000000 0.0898620865 Long EC CORP US N 1 N N N Transurban Group 549300ZR71SUQ4VUTM79 Q9194A106 2129755.000000000000 NS 21139518.140000000000 3.0818799371 Long EC CORP AU N 1 N N N APA Group N/A Q0437B100 1114518.000000000000 NS 8669969.190000000000 1.2639741325 Long EC CORP AU N 1 N N N Power Assets Holdings Ltd 254900JOWYUW1ZX4DF47 Y7092Q109 2016159.000000000000 NS 12680002.890000000000 1.8485873826 Long EC CORP HK N 1 N N N NiSource Inc 549300D8GOWWH0SJB189 65473P105 140744.000000000000 NS USD 4150540.560000000000 0.6050974102 Long EC CORP US N 1 N N N Northwest Natural Holding Co N/A 66765N105 7085.000000000000 NS USD 376213.500000000000 0.0548472690 Long EC CORP US N 1 N N N NorthWestern Corp 3BPWMBHR1R9SHUN7J795 668074305 18466.000000000000 NS USD 1088201.380000000000 0.1586462841 Long EC CORP US N 1 N N N OGE Energy Corp CE5OG6JPOZMDSA0LAQ19 670837103 67480.000000000000 NS USD 2602028.800000000000 0.3793435736 Long EC CORP US N 1 N N N ONE Gas Inc 549300HXDWI0LATTX840 68235P108 18398.000000000000 NS USD 1493733.620000000000 0.2177678623 Long EC CORP US N 1 N N N PNM Resources Inc 5493003JOBJGLZSDDQ28 69349H107 27022.000000000000 NS USD 1291111.160000000000 0.1882280170 Long EC CORP US N 1 N N N PPL Corp 9N3UAJSNOUXFKQLF3V18 69351T106 248039.000000000000 NS USD 6729298.070000000000 0.9810483179 Long EC CORP US N 1 N N N Fraport AG Frankfurt Airport S 5299001ERX0K10IZUL40 D3856U108 87345.000000000000 NS 3798643.420000000000 0.5537951654 Long EC CORP DE N 1 N N N Pinnacle West Capital Corp TWSEY0NEDUDCKS27AH81 723484101 40470.000000000000 NS USD 2959166.400000000000 0.4314098126 Long EC CORP US N 1 N N N Snam SpA 8156002278562044AF79 T8578N103 3174495.000000000000 NS 16630303.180000000000 2.4244922414 Long EC CORP IT N 1 N N N Portland General Electric Co GJOUP9M7C39GLSK9R870 736508847 32676.000000000000 NS USD 1579231.080000000000 0.2302323331 Long EC CORP US N 1 N N N Enagas SA 213800OU3FQKGM4M2U23 E41759106 247468.000000000000 NS 5464192.190000000000 0.7966115486 Long EC CORP ES N 1 N N N Public Service Enterprise Grou PUSS41EMO3E6XXNV3U28 744573106 168247.000000000000 NS USD 10646670.160000000000 1.5521526529 Long EC CORP US N 1 N N N SBA Communications Corp 5299001HX8ZN8Y8QIT49 78410G104 36344.000000000000 NS USD 11631897.200000000000 1.6957865536 Long EC CORP US N 1 N N N SJW Group N/A 784305104 12488.000000000000 NS USD 779376.080000000000 0.1136233801 Long EC CORP US N 1 N N N Sempra Energy PBBKGKLRK5S5C0Y4T545 816851109 87470.000000000000 NS USD 13144116.900000000000 1.9162494574 Long EC CORP US N 1 N N N South Jersey Industries Inc 549300DJYWYT5VXLFA46 838518108 38864.000000000000 NS USD 1326816.960000000000 0.1934334805 Long EC CORP US N 1 N N N Southern Co/The 549300FC3G3YU2FBZD92 842587107 194167.000000000000 NS USD 13846048.770000000000 2.0185824308 Long EC CORP US N 1 N N N Spire Inc 549300NXSY15DRY2R511 84857L101 18858.000000000000 NS USD 1402469.460000000000 0.2044626780 Long EC CORP US N 1 N N N U.S. Bank Money Market Deposit Account N/A 8AMMF0A84 18656818.600000000000 NS USD 18656818.600000000000 2.7199330918 Long STIV RF US N 1 N N N WEC Energy Group Inc 549300IGLYTZUK3PVP70 92939U106 106317.000000000000 NS USD 10699742.880000000000 1.5598899982 Long EC CORP US N 1 N N N Xcel Energy Inc LGJNMI9GH8XIDG5RCM61 98389B100 183574.000000000000 NS USD 12989696.240000000000 1.8937368376 Long EC CORP US N 1 N N N Terna - Rete Elettrica Naziona 8156009E94ED54DE7C31 T9471R100 1898575.000000000000 NS 14898274.650000000000 2.1719839325 Long EC CORP IT N 1 N N N Ferrovial SA 95980020140005757903 E49512119 692473.000000000000 NS 17554202.160000000000 2.5591852705 Long EC CORP ES N 1 N N N Vector Ltd N/A Q9389B109 1026332.000000000000 NS 2672956.590000000000 0.3896839669 Long EC CORP NZ N 1 N N N Grupo Aeroportuario del Pacifi 4469000001BZ368XFI90 P4959P100 401942.000000000000 NS 5619132.970000000000 0.8191999954 Long EC CORP MX N 1 N N N Aeroports de Paris 969500PJMBSFHYC37989 F00882104 93475.000000000000 NS 11838168.330000000000 1.7258583297 Long EC CORP FR N 1 N N N International Public Partnersh 2138002AJT55TI5M4W30 G4891V108 1611819.000000000000 NS 3194246.230000000000 0.4656815404 Long EC RF GG N 1 N N N Severn Trent PLC 213800RPBXRETY4A4C59 G8056D159 236426.000000000000 NS 7825320.990000000000 1.1408348857 Long EC CORP GB N 1 N N N Grupo Aeroportuario del Centro 529900HUSBARAFSXJ605 P49530101 352819.000000000000 NS 2253816.790000000000 0.3285785750 Long EC CORP MX N 1 N N N Vinci SA 213800WFQ334R8UXUG83 F5879X108 226092.000000000000 NS 20129921.530000000000 2.9346932549 Long EC CORP FR N 1 N N N REN - Redes Energeticas Nacion 549300FR1FN48IGHR915 X70955103 625045.000000000000 NS 1883178.630000000000 0.2745441215 Long EC CORP PT N 1 N N N Getlink SE 9695007ZEQ7M0OE74G82 F477AL114 519513.000000000000 NS 9162688.410000000000 1.3358064925 Long EC CORP FR N 1 N N N United Utilities Group PLC 2138002IEYQAOC88ZJ59 G92755100 644099.000000000000 NS 7997431.250000000000 1.1659264300 Long EC CORP GB N 1 N N N Algonquin Power & Utilities Co 549300K5VIUTJXQL7X75 015857105 651499.000000000000 NS 8756162.760000000000 1.2765400875 Long EC CORP CA N 1 N N N Enav SpA 81560048ECF8D2059980 T3R4KN103 553771.000000000000 NS 2313182.430000000000 0.3372333501 Long EC CORP IT N 1 N N N 2022-08-19 Frontier Funds, Inc. /s/ Elyce D. Dilworth Frontier Funds, Inc. Treasurer and Assistant Secretary