Frontier MFG Global Equity Fund
SCHEDULE OF INVESTMENTS
September 30, 2021 (Unaudited)
Number of Shares			Value
COMMON STOCKS 94.0%
		China  3.9%
	445,431	Alibaba Group Holding Ltd. (a)	$	8,246,683
	265,706	Alibaba Group Holding Ltd. - ADR (a)		39,337,773
				47,584,456
		France  2.5%
	42,562	LVMH Moet Hennessy Louis Vuitton SE		30,485,530
		Germany  4.3%
	386,426	SAP SE		52,255,901
		Switzerland  6.9%
	343,830	Nestle SA		41,428,100
	523,246	Novartis AG		42,905,761
				84,333,861
		United Kingdom  3.6%
	553,993	Reckitt Benckiser Group PLC		43,521,815
		United States  72.8%
	5,229	Alphabet, Inc. - Class A (a)		13,979,836
	25,461	Alphabet, Inc. - Class C (a)		67,861,458
	10,772	Amazon.com, Inc. (a)		35,386,451
	227,840	Crown Castle International Corp.		39,489,229
	363,477	Eversource Energy		29,717,879
	425,168	Intercontinental Exchange, Inc.		48,817,790
	117,994	Mastercard, Inc. - Class A		41,024,154
	150,945	McDonald’s Corp.		36,394,349
	230,155	Meta Platforms, Inc. - Class A (a)		78,112,305
	361,487	Microsoft Corp.		101,910,415
	114,940	Netflix, Inc. (a)		70,152,480
	340,956	PepsiCo, Inc.		51,283,192
	597,695	Starbucks Corp.		65,931,735
	268,893	The Procter & Gamble Co.		37,591,241
	247,072	Visa, Inc. - Class A		55,035,288
	341,053	WEC Energy Group, Inc.		30,080,875
	502,752	Xcel Energy, Inc.		31,422,000
	444,263	Yum! Brands, Inc.		54,337,808
				888,528,485
		Total Common Stocks
		(Cost $715,947,266)		1,146,710,048
SHORT-TERM INVESTMENTS 5.8%
		Money Market Deposit Account  5.8%
	70,887,247	U.S. Bank N.A., 0.003% (b)		70,887,247
		Total Short-Term Investments
		(Cost $70,887,247)		70,887,247
		Total Investments 99.8%
		(Cost $786,834,513)		1,217,597,295
		Other Assets in Excess of Liabilities 0.2%		2,075,612
		TOTAL NET ASSETS 100.0%	$	1,219,672,907
(a) Non-Income Producing.
(b) The Money Market Deposit Account (“MMDA”) is a short-term investment vehicle in which the Fund holds cash balances. The MMDA will bear interest at a variable rate that is determined based on market conditions and may change daily and by any amount. The rate shown is as of September 30, 2021.
ADR - American Depositary Receipt

Frontier MFG Global Plus Fund
SCHEDULE OF INVESTMENTS
September 30, 2021 (Unaudited)
Number of Shares			Value
COMMON STOCKS 93.7%
		China  3.9%
	238,905	Alibaba Group Holding Ltd. (a)	$	4,423,073
	145,734	Alibaba Group Holding Ltd. - ADR (a)		21,575,919
				25,998,992
		France  2.5%
	23,270	LVMH Moet Hennessy Louis Vuitton SE		16,667,409
		Germany  4.3%
	212,702	SAP SE		28,763,423
		Switzerland  6.9%
	189,154	Nestle SA		22,791,178
	287,944	Novartis AG		23,611,182
				46,402,360
		United Kingdom  3.5%
	304,627	Reckitt Benckiser Group PLC		23,931,566
		United States  72.6%
	2,844	Alphabet, Inc. - Class A (a)		7,603,491
	14,008	Alphabet, Inc. - Class C (a)		37,335,662
	5,927	Amazon.com, Inc. (a)		19,470,432
	124,987	Crown Castle International Corp.		21,662,747
	199,184	Eversource Energy		16,285,284
	233,802	Intercontinental Exchange, Inc.		26,845,146
	64,842	Mastercard, Inc. - Class A		22,544,267
	83,263	McDonald’s Corp.		20,075,542
	126,996	Meta Platforms, Inc. - Class A (a)		43,101,172
	199,360	Microsoft Corp.		56,203,571
	63,416	Netflix, Inc. (a)		38,705,321
	187,591	PepsiCo, Inc.		28,215,562
	329,384	Starbucks Corp.		36,334,349
	148,072	The Procter & Gamble Co.		20,700,466
	135,391	Visa, Inc. - Class A		30,158,345
	188,368	WEC Energy Group, Inc.		16,614,058
	277,389	Xcel Energy, Inc.		17,336,812
	243,674	Yum! Brands, Inc.		29,803,767
				488,995,994
		Total Common Stocks
		(Cost $454,619,957)		630,759,744
SHORT-TERM INVESTMENTS 6.2%
		Money Market Deposit Account  6.2%
	41,504,673	U.S. Bank N.A., 0.003% (b)		41,504,673
		Total Short-Term Investments
		(Cost $41,504,673)		41,504,673
		Total Investments 99.9%
		(Cost $496,124,630)		672,264,417
		Other Assets in Excess of Liabilities 0.1%		816,622
		TOTAL NET ASSETS 100.0%	$	673,081,039
(a) Non-Income Producing.
(b) The Money Market Deposit Account (“MMDA”) is a short-term investment vehicle in which the Fund holds cash balances. The MMDA will bear interest at a variable rate that is determined based on market conditions and may change daily and by any amount. The rate shown is as of September 30, 2021.
ADR - American Depositary Receipt

Frontier MFG Global Sustainable Fund
SCHEDULE OF INVESTMENTS
September 30, 2021 (Unaudited)
Number of Shares			Value
COMMON STOCKS 86.8%
		China  4.5%
	8,513	Alibaba Group Holding Ltd. - ADR (a)	$	1,260,350
	4,231	Tencent Holdings Ltd.		252,585
				1,512,935
		Germany  5.5%
	11,503	Fraport AG Frankfurt Airport Services Worldwide (a)		796,406
	7,582	SAP SE		1,025,304
				1,821,710
		Spain  4.4%
	4,822	Aena SME SA (a)		833,921
	32,149	Red Electrica Corp. SA		644,980
				1,478,901
		Switzerland  6.4%
	8,712	Nestle SA		1,049,709
	13,052	Novartis AG		1,070,254
				2,119,963
		United Kingdom  6.4%
	13,753	Reckitt Benckiser Group PLC		1,080,439
	19,278	Unilever PLC		1,041,320
				2,121,759
		United States  59.6%
	936	Alphabet, Inc. - Class C (a)		2,494,730
	284	Amazon.com, Inc. (a)		932,951
	2,013	CME Group, Inc.		389,274
	5,863	Eversource Energy		479,359
	6,784	Intercontinental Exchange, Inc.		778,939
	4,729	Lowe’s Companies, Inc.		959,325
	2,270	Mastercard, Inc. - Class A		789,234
	5,707	McDonald’s Corp.		1,376,015
	6,401	Meta Platforms, Inc. - Class A (a)		2,172,435
	8,850	Microsoft Corp.		2,494,992
	2,527	Netflix, Inc. (a)		1,542,329
	6,261	PepsiCo, Inc.		941,717
	4,887	The Procter & Gamble Co.		683,203
	18,764	U.S. Bancorp		1,115,332
	4,209	Visa, Inc. - Class A		937,555
	4,188	Walmart, Inc.		583,723
	9,754	Yum! Brands, Inc.		1,193,012
				19,864,125
		Total Common Stocks
		(Cost $25,996,553)		28,919,393
SHORT-TERM INVESTMENTS 12.8%
		Money Market Deposit Account  12.8%
	4,253,656	U.S. Bank N.A., 0.003% (b)		4,253,656
		Total Short-Term Investments
		(Cost $4,253,656)		4,253,656
		Total Investments 99.6%
		(Cost $30,250,209)		33,173,049
		Other Assets in Excess of Liabilities 0.4%		139,346
		TOTAL NET ASSETS 100.0%	$	33,312,395
(a) Non-Income Producing.
(b) The Money Market Deposit Account (“MMDA”) is a short-term investment vehicle in which the Fund holds cash balances. The MMDA will bear interest at a variable rate that is determined based on market conditions and may change daily and by any amount. The rate shown is as of September 30, 2021.
ADR - American Depositary Receipt

Frontier MFG Core Infrastructure Fund
SCHEDULE OF INVESTMENTS
September 30, 2021 (Unaudited)
Number of Shares			Value
COMMON STOCKS 94.9%
		Australia  8.2%
	1,398,957	APA Group	$	8,713,830
	1,141,779	Atlas Arteria Ltd.		5,264,722
	4,889,232	AusNet Services Ltd.		8,849,824
	2,128,211	Spark Infrastructure Group		4,298,692
	3,221,317	Sydney Airport		18,918,287
	2,566,117	Transurban Group		25,862,590
				71,907,945
		Canada  15.0%
	771,840	Algonquin Power & Utilities Corp.		11,316,176
	246,788	Canadian Utilities Ltd. - Class A		6,649,988
	326,522	Emera, Inc.		14,787,069
	692,334	Enbridge, Inc.		27,581,852
	580,018	Fortis, Inc. (a)		25,731,258
	712,156	Hydro One Ltd.		16,834,005
	573,830	TC Energy Corp.		27,617,778
				130,518,126
		Chile  0.1%
	6,320,474	Aguas Andinas SA - Class A		1,267,677
		France  6.0%
	123,484	Aeroports de Paris		15,726,983
	657,895	Getlink SE (a)		10,277,369
	251,618	Vinci SA		26,170,415
				52,174,767
		Germany  0.9%
	107,800	Fraport AG Frankfurt Airport Services Worldwide (a)		7,463,490
		Hong Kong  1.8%
	2,647,073	Power Assets Holdings Ltd.		15,517,391
		Italy  6.4%
	252,501	ACEA SpA		5,393,395
	593,801	Enav SpA		2,772,436
	1,062,902	Italgas SpA		6,796,412
	4,098,377	Snam SpA		22,671,692
	2,595,945	Terna SpA		18,422,853
				56,056,788
		Mexico  1.6%
	328,192	Grupo Aeroportuario del Centro Norte SAB de CV (a)		1,930,055
	511,342	Grupo Aeroportuario del Pacifico SAB de CV - Class B		5,945,405
	314,638	Grupo Aeroportuario del Sureste SAB de CV - Class B (a)		5,869,310
				13,744,770
		Netherlands  0.7%
	147,182	Koninklijke Vopak NV		5,799,316
		New Zealand  1.4%
	1,786,994	Auckland International Airport Ltd.		9,605,750
	1,046,972	Vector Ltd.		2,897,218
				12,502,968
		Portugal  0.3%
	789,358	REN - Redes Energeticas Nacionais SGPS SA		2,332,960
		Spain  8.5%
	168,452	Aena SME SA (a)		29,132,264
	389,464	Cellnex Telecom SA		24,023,329
	341,426	Enagas SA		7,587,876
	663,431	Red Electrica Corp. SA		13,309,893
				74,053,362
		Switzerland  0.7%
	36,402	Flughafen Zuerich AG (a)		6,485,520
		United Kingdom  5.8%
	2,059,997	National Grid PLC		24,546,348
	354,114	Pennon Group PLC		5,397,717
	294,713	Severn Trent PLC		10,317,643
	819,537	United Utilities Group PLC		10,666,564
				50,928,272
		United States  37.5%
	22,692	ALLETE, Inc.		1,350,628
	109,603	Alliant Energy Corp.		6,135,576
	118,953	Ameren Corp.		9,635,193
	206,590	American Electric Power Co., Inc.		16,770,976
	12,310	American States Water Co.		1,052,751
	62,407	American Tower Corp.		16,563,442
	83,784	American Water Works Co., Inc.		14,162,847
	65,307	Atmos Energy Corp.		5,760,077
	192,350	Avangrid, Inc.		9,348,210
	24,153	Avista Corp.		944,865
	26,882	Black Hills Corp.		1,687,114
	24,562	California Water Service Group		1,447,439
	267,047	CenterPoint Energy, Inc.		6,569,356
	7,349	Chesapeake Utilities Corp.		882,247
	146,160	CMS Energy Corp.		8,730,137
	164,620	Consolidated Edison, Inc.		11,949,766
	92,981	Crown Castle International Corp.		16,115,467
	232,606	Dominion Energy Corp.		16,984,890
	89,313	DTE Energy Co.		9,977,155
	174,582	Duke Energy Corp.		17,037,457
	94,100	Entergy Corp.		9,345,071
	106,793	Essential Utilities, Inc.		4,921,021
	98,865	Evergy, Inc.		6,149,403
	167,418	Eversource Energy		13,688,096
	251,115	FirstEnergy Corp.		8,944,716
	20,846	IDACORP, Inc.		2,155,060
	17,062	MGE Energy, Inc.		1,254,057
	178,557	NiSource, Inc.		4,326,436
	8,491	Northwest Natural Holding Company		390,501
	23,320	NorthWestern Corp.		1,336,236
	23,234	ONE Gas, Inc.		1,472,339
	49,141	Pinnacle West Capital Corp.		3,555,843
	34,126	PNM Resources, Inc.		1,688,555
	41,267	Portland General Electric Co.		1,939,136
	354,715	PPL Corp.		9,889,454
	50,484	SBA Communications Corp.		16,688,496
	137,686	Sempra Energy		17,417,279
	8,232	SJW Group		543,806
	49,080	South Jersey Industries, Inc.		1,043,441
	23,815	Spire, Inc.		1,457,002
	285,883	The Southern Co.		17,716,170
	145,424	WEC Energy Group, Inc.		12,826,397
	248,128	Xcel Energy, Inc.		15,508,000
				327,362,108
		Total Common Stocks
		(Cost $692,671,091)		828,115,460
CLOSED-END FUNDS 1.1%
		United Kingdom  1.1%
	2,295,029	HICL Infrastructure PLC		5,134,084
	2,115,711	International Public Partnerships Ltd.		4,614,666
				9,748,750
		Total Closed-End Funds
		(Cost $9,356,115)		9,748,750
SHORT-TERM INVESTMENTS 1.9%
		Money Market Deposit Account  1.9%
	16,630,784	U.S. Bank N.A., 0.003% (b)		16,630,784
		Total Short-Term Investments
		(Cost $16,630,784)		16,630,784
		Total Investments 97.9%
		(Cost $718,657,990)		854,494,994
		Other Assets in Excess of Liabilities 2.1%		18,179,371
		TOTAL NET ASSETS 100.0%	$	872,674,365
(a) Non-Income Producing.
(b) The Money Market Deposit Account (“MMDA”) is a short-term investment vehicle in which the Fund holds cash balances. The MMDA will bear interest at a variable rate that is determined based on market conditions and may change daily and by any amount. The rate shown is as of September 30, 2021.

Frontier MFG Select Infrastructure Fund
SCHEDULE OF INVESTMENTS
September 30, 2021 (Unaudited)
Number of Shares			Value
COMMON STOCKS 96.4%
		Australia  16.1%
	912,345	Atlas Arteria Ltd.	$	4,206,806
	599,734	AusNet Services Ltd.		1,085,557
	1,983,046	Spark Infrastructure Group		4,005,478
	321,063	Sydney Airport		1,885,552
	939,824	Transurban Group		9,486,726
				20,670,119
		Canada  5.8%
	185,500	Enbridge, Inc.		7,390,123
		France  5.7%
	12,118	Aeroports de Paris		1,543,354
	55,255	Vinci SA		5,746,991
				7,290,345
		Italy  4.3%
	573,410	Snam SpA		3,172,030
	325,939	Terna SpA		2,313,118
				5,485,148
		Netherlands  1.1%
	35,035	Koninklijke Vopak NV		1,380,461
		New Zealand  1.1%
	266,227	Auckland International Airport Ltd.		1,431,068
		Spain  8.3%
	29,970	Aena SME SA (a)		5,183,044
	273,897	Red Electrica Corp. SA		5,494,979
				10,678,023
		United Kingdom  7.3%
	347,108	National Grid PLC		4,136,041
	35,186	Severn Trent PLC		1,231,831
	305,831	United Utilities Group PLC		3,980,499
				9,348,371
		United States  46.7%
	43,999	Alliant Energy Corp.		2,463,064
	23,071	American Tower Corp.		6,123,274
	11,551	American Water Works Co., Inc.		1,952,581
	66,319	Atmos Energy Corp.		5,849,336
	32,309	Crown Castle International Corp.		5,599,796
	127,973	CSX Corp.		3,805,917
	34,139	Dominion Energy Corp.		2,492,830
	74,884	Evergy, Inc.		4,657,785
	68,084	Eversource Energy		5,566,547
	18,198	Norfolk Southern Corp.		4,353,872
	48,412	Sempra Energy		6,124,118
	5,668	Union Pacific Corp.		1,110,985
	54,343	WEC Energy Group, Inc.		4,793,053
	80,012	Xcel Energy, Inc.		5,000,750
				59,893,908
		Total Common Stocks
		(Cost $112,338,107)		123,567,566
SHORT-TERM INVESTMENTS 3.2%
		Money Market Deposit Account  3.2%
	4,161,359	U.S. Bank N.A., 0.003% (b)		4,161,359
		Total Short-Term Investments
		(Cost $4,161,359)		4,161,359
		Total Investments 99.6%
		(Cost $116,499,466)		127,728,925
		Other Assets in Excess of Liabilities 0.4%		543,887
		TOTAL NET ASSETS 100.0%	$	128,272,812
(a) Non-Income Producing.
(b) The Money Market Deposit Account (“MMDA”) is a short-term investment vehicle in which the Fund holds cash balances. The MMDA will bear interest at a variable rate that is determined based on market conditions and may change daily and by any amount. The rate shown is as of September 30, 2021.

Investment Valuation – Securities are valued at their fair value. Equity securities that are traded on a national securities exchange, except for those traded on NASDAQ Global Market, NASDAQ Global Select Market and NASDAQ Capital Market exchanges (together, “NASDAQ”), for which market quotations are readily available are valued at the last reported sale price on the national securities exchange on which such securities are principally traded. Equity securities that are traded on NASDAQ are valued using the NASDAQ Official Closing Price (“NOCP”). Equity securities for which there were no transactions on a given day or securities not listed on a national securities exchange are valued at the most recent quoted bid price. Debt securities are valued at the bid price provided by an independent pricing service, which uses valuation methods such as matrix pricing and other analytical pricing models, as well as market transactions and other market inputs. Shares of underlying mutual funds are valued at their respective Net Asset Value (“NAV”). Deposit accounts are valued at acquisition cost, which approximates fair value. Exchange traded funds and closed-end funds are valued at the last reported sale price on the exchange on which the security is principally traded. Securities that are primarily traded on foreign exchanges generally are valued at the last sale price of such securities on their respective exchange. In the case of foreign securities, the occurrence of events after the close of the foreign markets, but prior to the time a Fund’s NAV is calculated, will result in a systematic fair value adjustment to the trading prices of foreign securities provided that there is a movement in the markets that exceeds a threshold established by the Board of Directors (the “Board”) and provided the fair value prices exceed a pre-established confidence level. The Funds will also value foreign securities at fair value using fair valuation procedures approved by the Board in the case of other significant events relating to a particular foreign issuer or market. In such cases, use of fair valuation can reduce an investor’s ability to seek to profit by estimating the Fund’s NAV in advance of the time the NAV is calculated. The Board has retained an independent fair value pricing service to assist in valuing foreign securities held by the Funds. In valuing assets, prices denominated in foreign currencies are converted to U.S. dollar equivalents at the current exchange rate, which approximates fair value. Any securities or other assets for which market quotations are not readily available are valued at their fair value as determined in good faith by the Adviser or a subadviser pursuant to guidelines established by the Board. The Board has appointed a Valuation Committee to assist the Board in its oversight of the Funds’ valuation procedures.

The Funds follow a fair value hierarchy that distinguishes between market data obtained from independent sources (observable inputs) and the Funds’ own market assumptions (unobservable inputs). These inputs are used in determining the value of each Fund’s investments and are summarized in the following fair value hierarchy:

Level 1 — Quoted prices in active markets for identical securities that the Funds have the ability to access

Level 2 — Evaluated prices based on other significant observable inputs (including quoted prices for similar securities, foreign security indices, foreign exchange rates, fair value estimates for foreign securities and changes in benchmark securities indices)

Level 3 — Significant unobservable inputs (including the Fund’s own assumptions in determining fair value of investments)

The following is a summary of inputs used to value the Funds’ securities as of September 30, 2021:

Global Equity Fund
Description	Level 1		Level 2		Level 3		Total
Equity (a)
Common Stocks	$	927,866,258	$	218,843,790	$	-	$	1,146,710,048
Total Equity		927,866,258		218,843,790		-		1,146,710,048
Short-Term Investments		70,887,247		-		-		70,887,247
Total Investments in Securities	$	998,753,505	$	218,843,790	$	-	$	1,217,597,295
Global Plus Fund
Description	Level 1		Level 2		Level 3		Total
Equity (a)
Common Stocks	$	510,571,913	$	120,187,831	$	-	$	630,759,744
Total Equity		510,571,913		120,187,831		-		630,759,744
Short-Term Investments		41,504,673		-		-		41,504,673
Total Investments in Securities	$	552,076,586	$	120,187,831	$	-	$	672,264,417
Global Sustainable Fund
Description	Level 1		Level 2		Level 3		Total
Equity (a)
Common Stocks	$	21,958,396	$	6,960,997	$	-	$	28,919,393
Total Equity		21,958,396		6,960,997		-		28,919,393
Short-Term Investments		4,253,656		-		-		4,253,656
Total Investments in Securities	$	26,212,052	$	6,960,997	$	-	$	33,173,049
Core Fund
Description	Level 1		Level 2		Level 3		Total
Equity (a)
Common Stocks	$	506,150,663	$	321,964,797	$	-	$	828,115,460
Closed-End Funds		-		9,748,750		-		9,748,750
Total Equity		506,150,663		331,713,547		-		837,864,210
Short-Term Investments		16,630,784		-		-		16,630,784
Total Investments in Securities	$	522,781,447	$	331,713,547	$	-	$	854,494,994
Select Fund
Description	Level 1		Level 2		Level 3		Total
Equity (a)
Common Stocks	$	73,417,659	$	50,149,907	$	-	$	123,567,566
Total Equity		73,417,659		50,149,907		-		123,567,566
Short-Term Investments		4,161,359		-		-		4,161,359
Total Investments in Securities	$	77,579,018	$	50,149,907	$	-	$	127,728,925
(a) See each Fund’s Schedule of Investments for sector or country classifications.

Tax Disclosure - Each Fund intends to comply with the requirements of Subchapter M of the Internal Revenue Code of 1986, as amended, necessary to qualify as a regulated investment company and to make the requisite distributions of income and capital gains to its shareholders sufficient to relieve it from all or substantially all federal income taxes. Therefore, no federal income tax provision has been provided.

The Funds have adopted financial reporting rules regarding recognition and measurement of tax positions taken or expected to be taken on a tax return. The Funds recognize interest and penalties, if any, as income tax expense on the Statements of Operations. During the period, the Funds did not incur any interest or penalties. The Funds have reviewed all open tax years and concluded that there is no effect to any of the Fund’s financial positions or results of operations and no tax liability resulting from unrecognized tax benefits relating to uncertain income tax positions taken or expected to be taken on a tax return. The Funds have no examinations in progress.