Frontier Funds 10-Q 13 Nov 20 2020 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Nov. 05, 2020
Document and Entity Information [Abstract]
Entity Registrant Name	Frontier Funds
Entity Central Index Key	0001261379
Document Type	10-Q
Document Period End Date	Sep. 30, 2020
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity File Number	000-51274
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	DE
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		0
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2020

Statements of Financial Conditi

Statements of Financial Condition - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Frontier Funds [Member]
ASSETS
Cash and cash equivalents	$ 249,842	$ 367,568
U.S. Treasury securities, at fair value	105,594	650,728
Open trade equity, at fair value		116,184
Receivable from futures commission merchants	780,884	2,526,242
Swap contracts, at fair value	12,451,549	21,579,865
Investments in private investment companies, at fair value	22,967,286	35,926,037
Interest receivable	703	13,363
Receivable from related parties	175,804	11,453
Redemptions receivable from private investment companies	481,312	552,017
Other assets		5,700
Total Assets	37,212,974	61,749,157
LIABILITIES
Open trade deficit, at fair value	59,775
Redemptions payable	54,230	133,633
Management fees payable to Managing Owner	8,903	8,795
Interest payable to Managing Owner	1,419	327
Service fees payable to Managing Owner	36,349	68,762
Trading fees payable to Managing Owner	92,944	160,907
Risk analysis fees payable	10,029	8,465
Advance on unrealized swap appreciation	10,291,555	12,191,555
Subscriptions in advance for service fee rebates	630,993	598,042
Payables to related parties	175,803
Other liabilities	16,818	22,078
Total Liabilities	11,378,818	13,192,564
CAPITAL
Managing Owner Units	277,817	487,974
Limited Owner Units	25,556,339	48,068,619
Total Owners' Capital	25,834,156	48,556,593
Total Liabilities and Capital	37,212,974	61,749,157
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member]
ASSETS
Cash and cash equivalents	46,937	56,263
U.S. Treasury securities, at fair value	19,838	99,605
Swap contracts, at fair value	4,553,855	6,384,583
Investments in private investment companies, at fair value	4,462,988	9,305,733
Investments in unconsolidated trading companies, at fair value	14,532	24,150
Interest receivable	132	2,027
Receivable from related parties	33,028	11,453
Redemptions receivable from private investment companies	111,665	171,906
Other assets		5,700
Total Assets	9,242,975	16,061,420
LIABILITIES
Redemptions payable
Interest payable to Managing Owner
Service fees payable to Managing Owner	632	3,392
Trading fees payable to Managing Owner	16,686	35,877
Advance on unrealized swap appreciation	4,000,000	4,000,000
Subscriptions in advance for service fee rebates	22,650	22,531
Other liabilities	3,054
Total Liabilities	4,043,022	4,061,800
CAPITAL
Total Owners' Capital	5,199,953	11,999,620
Non-Controlling Interests
Total Capital	5,199,953	11,999,620
Total Liabilities and Capital	9,242,975	16,061,420
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Class 1 [Member]
CAPITAL
Limited Owner Units	$ 141,090	$ 1,303,195
Units Outstanding	2,122	12,890
Net Asset Value per Unit	$ 66.48	$ 101.10
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Class 1a [Member]
CAPITAL
Limited Owner Units
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Class 2 [Member]
CAPITAL
Managing Owner Units	2,014	3,023
Limited Owner Units	$ 1,720,828	$ 5,597,828
Units Outstanding	21,269	46,067
Net Asset Value per Unit	$ 81	$ 121.58
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Class 2a [Member]
CAPITAL
Managing Owner Units
Limited Owner Units
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Class 3
CAPITAL
Managing Owner Units	54,277	115,933
Limited Owner Units	$ 3,281,744	$ 4,979,641
Units Outstanding	43,994	44,853
Net Asset Value per Unit	$ 75.83	$ 113.61
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Class 3a [Member]
CAPITAL
Managing Owner Units
Limited Owner Units
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member]
ASSETS
Cash and cash equivalents	32,727	25,639
U.S. Treasury securities, at fair value	13,832	45,391
Swap contracts, at fair value
Investments in private investment companies, at fair value	1,191,250	2,198,997
Investments in unconsolidated trading companies, at fair value	10,133	11,005
Interest receivable	92	924
Receivable from related parties	23,029
Redemptions receivable from private investment companies	44,070
Other assets
Total Assets	1,315,133	2,281,956
LIABILITIES
Redemptions payable
Interest payable to Managing Owner
Service fees payable to Managing Owner	125	204
Trading fees payable to Managing Owner	7,360	11,673
Advance on unrealized swap appreciation
Subscriptions in advance for service fee rebates	31,725	31,541
Other liabilities	2,129	499
Total Liabilities	41,339	43,917
CAPITAL
Total Owners' Capital	1,273,794	2,238,039
Non-Controlling Interests
Total Capital	1,273,794	2,238,039
Total Liabilities and Capital	1,315,133	2,281,956
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Class 1 [Member]
CAPITAL
Limited Owner Units	$ 9,205	$ 12,794
Units Outstanding	177	177
Net Asset Value per Unit	$ 52.15	$ 72.28
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Class 1a [Member]
CAPITAL
Limited Owner Units
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Class 2 [Member]
CAPITAL
Managing Owner Units	6,702	13,043
Limited Owner Units	$ 500,654	$ 837,765
Units Outstanding	7,983	9,759
Net Asset Value per Unit	$ 63.55	$ 87.18
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Class 2a [Member]
CAPITAL
Managing Owner Units
Limited Owner Units
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Class 3
CAPITAL
Managing Owner Units	6,739	9,228
Limited Owner Units	$ 750,494	$ 1,365,209
Units Outstanding	12,678	16,806
Net Asset Value per Unit	$ 59.73	$ 81.78
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Class 3a [Member]
CAPITAL
Managing Owner Units
Limited Owner Units
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member]
ASSETS
Cash and cash equivalents	47,277	34,272
U.S. Treasury securities, at fair value	19,981	60,673
Swap contracts, at fair value	578,274	362,521
Investments in private investment companies, at fair value	694,550	986,757
Investments in unconsolidated trading companies, at fair value	14,637	14,711
Interest receivable	133	1,296
Receivable from related parties	33,267
Redemptions receivable from private investment companies	1,250
Other assets
Total Assets	1,389,369	1,460,230
LIABILITIES
Redemptions payable	2,309	6,585
Interest payable to Managing Owner	44
Service fees payable to Managing Owner
Trading fees payable to Managing Owner	2,699	3,468
Advance on unrealized swap appreciation	115,000	115,000
Subscriptions in advance for service fee rebates	409	220
Other liabilities	3,076	667
Total Liabilities	123,581	125,940
CAPITAL
Total Owners' Capital	1,265,832	1,334,290
Non-Controlling Interests
Total Capital	1,265,832	1,334,290
Total Liabilities and Capital	1,389,413	1,460,230
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Class 1 [Member]
CAPITAL
Limited Owner Units
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Class 1a [Member]
CAPITAL
Limited Owner Units		$ 11,447
Units Outstanding		259
Net Asset Value per Unit		$ 44.20
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Class 2 [Member]
CAPITAL
Managing Owner Units	$ 3,932	$ 4,530
Limited Owner Units	$ 28,718	$ 36,515
Units Outstanding	401	503
Net Asset Value per Unit	$ 81.41	$ 81.60
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Class 2a [Member]
CAPITAL
Managing Owner Units	$ 7,840	$ 7,861
Limited Owner Units	$ 72,561	$ 73,965
Units Outstanding	1,535	1,557
Net Asset Value per Unit	$ 52.39	$ 52.55
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Class 3
CAPITAL
Managing Owner Units
Limited Owner Units	$ 937,745	$ 991,828
Units Outstanding	10,980	11,581
Net Asset Value per Unit	$ 85.40	$ 85.64
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Class 3a [Member]
CAPITAL
Managing Owner Units	$ 992	$ 993
Limited Owner Units	$ 214,044	$ 207,151
Units Outstanding	3,891	3,763
Net Asset Value per Unit	$ 55.27	$ 55.31
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member]
ASSETS
Cash and cash equivalents		$ 118,506
U.S. Treasury securities, at fair value		209,799
Open trade equity, at fair value		116,184
Receivable from futures commission merchants	780,884	2,526,242
Swap contracts, at fair value	7,319,420	11,944,753
Investments in private investment companies, at fair value	9,974,115	13,809,892
Investments in unconsolidated trading companies, at fair value		50,867
Interest receivable		4,270
Receivable from related parties
Redemptions receivable from private investment companies	195,931	380,111
Other assets
Total Assets	18,270,350	29,160,624
LIABILITIES
Open trade deficit, at fair value	59,775
Redemptions payable	25,198	39,059
Management fees payable to Managing Owner	8,903	8,795
Interest payable to Managing Owner	361	105
Service fees payable to Managing Owner	20,578	41,635
Trading fees payable to Managing Owner	41,480	70,179
Risk analysis fees payable	10,029	8,465
Advance on unrealized swap appreciation	6,176,555	6,176,555
Subscriptions in advance for service fee rebates	341,603	319,698
Payables to related parties	175,803
Other liabilities	554	2,372
Total Liabilities	6,860,839	6,666,863
CAPITAL
Total Owners' Capital	11,409,511	22,493,761
Non-Controlling Interests
Total Capital	11,409,511	22,493,761
Total Liabilities and Capital	18,270,350	29,160,624
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Class 1 [Member]
CAPITAL
Limited Owner Units	$ 8,800,149	$ 17,797,600
Units Outstanding	122,530	151,814
Net Asset Value per Unit	$ 71.82	$ 117.23
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Class 2 [Member]
CAPITAL
Managing Owner Units	$ 46,207	$ 73,748
Limited Owner Units	$ 1,801,758	$ 3,288,105
Units Outstanding	15,873	18,092
Net Asset Value per Unit	$ 116.42	$ 185.82
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Class 2a [Member]
CAPITAL
Managing Owner Units	$ 77,094	$ 151,133
Limited Owner Units	$ 27,608	$ 44,048
Units Outstanding	1,038	1,212
Net Asset Value per Unit	$ 100.90	$ 161.04
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Class 3a [Member]
CAPITAL
Limited Owner Units	$ 507,236	$ 900,583
Units Outstanding	5,042	5,611
Net Asset Value per Unit	$ 100.60	$ 160.50
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Class 1AP [Member]
CAPITAL
Limited Owner Units	$ 149,459	$ 238,544
Units Outstanding	1,731	1,731
Net Asset Value per Unit	$ 86.34	$ 137.81
The Series of Frontier Funds [Member] | Frontier Select Fund [Member]
ASSETS
Cash and cash equivalents	$ 15,685	$ 61,345
U.S. Treasury securities, at fair value	6,629	108,603
Open trade equity, at fair value
Receivable from futures commission merchants
Swap contracts, at fair value
Investments in private investment companies, at fair value	1,436,833	2,184,240
Investments in unconsolidated trading companies, at fair value	4,856	505,355
Interest receivable	44	2,268
Receivable from related parties	11,037
Redemptions receivable from private investment companies	128,396
Other assets
Total Assets	1,603,480	2,861,811
LIABILITIES
Open trade deficit, at fair value
Redemptions payable	7,668	6,875
Management fees payable to Managing Owner
Interest payable to Managing Owner	458
Service fees payable to Managing Owner	3,701	6,906
Trading fees payable to Managing Owner	4,088	6,000
Risk analysis fees payable
Advance on unrealized swap appreciation
Subscriptions in advance for service fee rebates	19,010	16,895
Payables to related parties
Other liabilities	1,023	8,509
Total Liabilities	35,948	45,185
CAPITAL
Total Owners' Capital	1,567,532	2,816,626
Non-Controlling Interests
Total Capital	1,567,532	2,816,626
Total Liabilities and Capital	1,603,480	2,861,811
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Class 1 [Member]
CAPITAL
Limited Owner Units	$ 1,495,959	$ 2,715,051
Units Outstanding	28,038	40,793
Net Asset Value per Unit	$ 53.35	$ 66.56
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Class 2 [Member]
CAPITAL
Managing Owner Units	$ 16,774	$ 29,831
Limited Owner Units	$ 45,917	$ 60,910
Units Outstanding	736	873
Net Asset Value per Unit	$ 85.20	$ 103.94
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Class 2a [Member]
CAPITAL
Managing Owner Units
Limited Owner Units
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Class 3a [Member]
CAPITAL
Limited Owner Units
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Class 1AP [Member]
CAPITAL
Limited Owner Units	$ 8,882	$ 10,834
Units Outstanding	138	138
Net Asset Value per Unit	$ 64.20	$ 78.51
The Series of Frontier Funds [Member] | Frontier Global Fund (formerly Frontier Winton Fund) [Member]
ASSETS
Cash and cash equivalents	$ 42,890	$ 27,532
U.S. Treasury securities, at fair value	18,127	48,741
Swap contracts, at fair value
Investments in private investment companies, at fair value	3,040,737	5,022,967
Investments in unconsolidated trading companies, at fair value	13,279	11,818
Interest receivable	121	992
Receivable from related parties	30,180
Redemptions receivable from private investment companies
Other assets
Total Assets	3,145,334	5,112,050
LIABILITIES
Redemptions payable	19,055	71,379
Interest payable to Managing Owner	230	56
Service fees payable to Managing Owner	6,769	11,263
Trading fees payable to Managing Owner	13,063	22,540
Advance on unrealized swap appreciation
Subscriptions in advance for service fee rebates	153,743	150,025
Other liabilities	2,793	8,543
Total Liabilities	195,653	263,806
CAPITAL
Total Owners' Capital	2,949,681	4,848,244
Non-Controlling Interests
Total Capital	2,949,681	4,848,244
Total Liabilities and Capital	3,145,334	5,112,050
The Series of Frontier Funds [Member] | Frontier Global Fund (formerly Frontier Winton Fund) [Member] | Class 1 [Member]
CAPITAL
Limited Owner Units	$ 2,745,609	$ 4,471,980
Units Outstanding	26,356	34,003
Net Asset Value per Unit	$ 104.18	$ 131.52
The Series of Frontier Funds [Member] | Frontier Global Fund (formerly Frontier Winton Fund) [Member] | Class 2 [Member]
CAPITAL
Managing Owner Units	$ 30,637	$ 50,058
Limited Owner Units	$ 146,664	$ 293,159
Units Outstanding	1,135	1,780
Net Asset Value per Unit	$ 156.22	$ 192.82
The Series of Frontier Funds [Member] | Frontier Global Fund (formerly Frontier Winton Fund) [Member] | Class 1AP [Member]
CAPITAL
Limited Owner Units	$ 26,771	$ 33,047
Units Outstanding	214	214
Net Asset Value per Unit	$ 125.39	$ 154.43
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member]
ASSETS
Cash and cash equivalents	$ 64,326	$ 44,011
U.S. Treasury securities, at fair value	27,187	77,916
Swap contracts, at fair value		2,888,008
Investments in private investment companies, at fair value	2,089,460	2,259,678
Investments in unconsolidated trading companies, at fair value	19,916	18,891
Interest receivable	181	1,586
Receivable from related parties	45,263
Redemptions receivable from private investment companies
Other assets
Total Assets	2,246,333	5,290,090
LIABILITIES
Redemptions payable		9,735
Interest payable to Managing Owner	326	166
Service fees payable to Managing Owner	4,544	5,362
Trading fees payable to Managing Owner	7,568	11,170
Advance on unrealized swap appreciation		1,900,000
Subscriptions in advance for service fee rebates	61,853	57,132
Other liabilities	4,189	1,488
Total Liabilities	78,480	1,985,053
CAPITAL
Total Owners' Capital	2,167,853	2,826,013
Non-Controlling Interests		479,024
Total Capital	2,167,853	3,305,037
Total Liabilities and Capital	2,246,333	5,290,090
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member] | Class 1 [Member]
CAPITAL
Limited Owner Units	$ 1,970,940	$ 2,295,623
Units Outstanding	22,685	23,536
Net Asset Value per Unit	$ 86.88	$ 97.54
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member] | Class 2 [Member]
CAPITAL
Managing Owner Units	$ 24,609	$ 28,593
Limited Owner Units	$ 164,713	$ 493,464
Units Outstanding	1,353	3,399
Net Asset Value per Unit	$ 139.90	$ 153.59
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member] | Class 1AP [Member]
CAPITAL
Limited Owner Units	$ 7,591	$ 8,333
Units Outstanding	73	73
Net Asset Value per Unit	$ 104.53	$ 114.15

Condensed Schedule of Investmen

Condensed Schedule of Investments - USD ($)		Sep. 30, 2020		Dec. 31, 2019
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Swap [Member]
Investment Owned, Fair Value	[1]	$ 4,553,855		$ 6,384,583
Investment Owned, % of Total Capital (Net Asset Value)	[1]	87.57%		101.18%
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Swap [Member] | Frontier XXXV Diversified Select Swap (U.S.) [Member]
Investment Owned, Fair Value	[1]	$ 4,553,855		$ 6,384,583
Investment Owned, % of Total Capital (Net Asset Value)	[1]	87.57%		101.18%
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Swap [Member] | Frontier XXXVII L/S Select Swap (U.S.) [Member]
Investment Owned, Fair Value	[1]
Investment Owned, % of Total Capital (Net Asset Value)	[1]	0.00%
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Private Investment Companies [Member]
Investment Owned, Fair Value	[2]	$ 4,462,988		$ 9,305,733
Investment Owned, % of Total Capital (Net Asset Value)	[2]	85.82%		147.47%
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC [Member]
Investment Owned, Fair Value	[2]			$ 494,968
Investment Owned, % of Total Capital (Net Asset Value)	[2]			7.84%
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Doherty Feeder Fund (528) LLC [Member]
Investment Owned, Fair Value	[2]			$ 1,267,090
Investment Owned, % of Total Capital (Net Asset Value)	[2]			20.08%
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC [Member]
Investment Owned, Fair Value	[2]	$ 1,002,472		$ 2,031,482
Investment Owned, % of Total Capital (Net Asset Value)	[2]	19.28%		32.19%
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - QIM Feeder Fund (526) LLC [Member]
Investment Owned, Fair Value	[2]	$ 505,135		$ 1,460,173
Investment Owned, % of Total Capital (Net Asset Value)	[2]	9.71%		23.14%
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Quest Feeder Fund (517) LLC [Member]
Investment Owned, Fair Value	[2]	$ 547,959		$ 499,551
Investment Owned, % of Total Capital (Net Asset Value)	[2]	10.54%		7.92%
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Investment Owned, Fair Value	[2]	$ 957,482		$ 1,827,263
Investment Owned, % of Total Capital (Net Asset Value)	[2]	18.41%		28.96%
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Investment Owned, Fair Value	[2]	$ 735,269		$ 1,549,720
Investment Owned, % of Total Capital (Net Asset Value)	[2]	14.14%		24.56%
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - TT Feeder Fund (531) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - LRR Feeder Fund (522) LLC [Member]
Investment Owned, Fair Value	[2]			$ 175,486
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%		2.78%
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - TT Feeder Fund (531) LLC [Member]
Investment Owned, Fair Value	[2]	$ 714,671
Investment Owned, % of Total Capital (Net Asset Value)	[2]	13.74%
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - JL Cyril Systematic Feeder Fund (547) LLC) [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Investment in Unconsolidated Trading Companies [Member]
Investment Owned, Fair Value	[2]	$ 14,532	[3]	$ 24,150
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.28%	[3]	0.38%
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Investment in Unconsolidated Trading Companies [Member] | Frontier Trading Company XXXVIII, LLC [Member]
Investment Owned, Fair Value	[2]	$ 14,532		$ 24,150
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.28%		0.38%
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member]
Investment Owned, Fair Value	[4]			$ 99,605
Investment Owned, % of Total Capital (Net Asset Value)				1.58%
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]	$ 19,838		$ 99,605
Investment Owned, % of Total Capital (Net Asset Value)	[4]	0.38%		1.58%
Investment Owned, Underlying Face Amount, at Face Value	[4]	$ 80,000		$ 510,000
Investment Owned, at Cost		106,503	[4]	652,026
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]			78,065
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]			99,804
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]			78,065
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]			99,804
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Swap [Member]
Investment Owned, Fair Value	[1]
Investment Owned, % of Total Capital (Net Asset Value)	[1]
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Swap [Member] | Frontier XXXV Diversified Select Swap (U.S.) [Member]
Investment Owned, Fair Value	[1]
Investment Owned, % of Total Capital (Net Asset Value)	[1]	0.00%
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Swap [Member] | Frontier XXXVII L/S Select Swap (U.S.) [Member]
Investment Owned, Fair Value	[1]
Investment Owned, % of Total Capital (Net Asset Value)	[1]	0.00%
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Private Investment Companies [Member]
Investment Owned, Fair Value	[2]	$ 1,191,250		$ 2,198,997
Investment Owned, % of Total Capital (Net Asset Value)	[2]	93.52%		137.40%
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC [Member]
Investment Owned, Fair Value	[2]			$ 210,013
Investment Owned, % of Total Capital (Net Asset Value)	[2]			101.18%
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Doherty Feeder Fund (528) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - QIM Feeder Fund (526) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Quest Feeder Fund (517) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Investment Owned, Fair Value	[2]	$ 488,902		$ 1,049,575
Investment Owned, % of Total Capital (Net Asset Value)	[2]	38.38%		65.58%
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Investment Owned, Fair Value	[2]	$ 293,558		$ 466,988
Investment Owned, % of Total Capital (Net Asset Value)	[2]	23.05%		29.18%
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - TT Feeder Fund (531) LLC [Member]
Investment Owned, Fair Value	[2]	$ 408,790		$ 472,421
Investment Owned, % of Total Capital (Net Asset Value)	[2]	32.09%		29.52%
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - LRR Feeder Fund (522) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - JL Cyril Systematic Feeder Fund (547) LLC) [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Investment in Unconsolidated Trading Companies [Member]
Investment Owned, Fair Value	[2]	$ 10,133	[3]	$ 11,005
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.80%	[3]	0.69%
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Investment in Unconsolidated Trading Companies [Member] | Frontier Trading Company XXXVIII, LLC [Member]
Investment Owned, Fair Value	[2]	$ 10,133		$ 11,005
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.80%		0.69%
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member]
Investment Owned, Fair Value	[4]			$ 45,391
Investment Owned, % of Total Capital (Net Asset Value)	[4]			2.84%
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]	$ 13,832		$ 45,391
Investment Owned, % of Total Capital (Net Asset Value)	[4]	1.09%		2.84%
Investment Owned, Underlying Face Amount, at Face Value	[4]	$ 80,000		$ 510,000
Investment Owned, at Cost	[4]	106,503		652,026
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]			35,575
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]			45,482
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]			35,575
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]			45,482
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Swap [Member]
Investment Owned, Fair Value	[1]	$ 578,274		$ 362,521
Investment Owned, % of Total Capital (Net Asset Value)	[1]	45.68%		27.17%
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Swap [Member] | Frontier XXXV Diversified Select Swap (U.S.) [Member]
Investment Owned, Fair Value	[1]
Investment Owned, % of Total Capital (Net Asset Value)	[1]	0.00%
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Swap [Member] | Frontier XXXVII L/S Select Swap (U.S.) [Member]
Investment Owned, Fair Value	[1]	$ 578,274		$ 362,521
Investment Owned, % of Total Capital (Net Asset Value)	[1]	45.68%		27.17%
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Private Investment Companies [Member]
Investment Owned, Fair Value	[2]	$ 694,550		$ 986,757
Investment Owned, % of Total Capital (Net Asset Value)	[2]	54.87%		75.52%
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC [Member]
Investment Owned, Fair Value	[2]			$ 111,013
Investment Owned, % of Total Capital (Net Asset Value)	[2]			8.50%
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Doherty Feeder Fund (528) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - QIM Feeder Fund (526) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Quest Feeder Fund (517) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Investment Owned, Fair Value	[2]	$ 268,630		$ 343,834
Investment Owned, % of Total Capital (Net Asset Value)	[2]	21.22%		26.31%
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - TT Feeder Fund (531) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - LRR Feeder Fund (522) LLC [Member]
Investment Owned, Fair Value	[2]	$ 425,920		$ 531,910
Investment Owned, % of Total Capital (Net Asset Value)	[2]	33.65%		40.71%
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - TT Feeder Fund (531) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - JL Cyril Systematic Feeder Fund (547) LLC) [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Investment in Unconsolidated Trading Companies [Member]
Investment Owned, Fair Value	[2]	$ 14,637	[3]	$ 14,711
Investment Owned, % of Total Capital (Net Asset Value)	[2]	1.16%	[3]	1.13%
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Investment in Unconsolidated Trading Companies [Member] | Frontier Trading Company XXXVIII, LLC [Member]
Investment Owned, Fair Value	[2]	$ 14,637		$ 14,711
Investment Owned, % of Total Capital (Net Asset Value)	[2]	1.16%		1.13%
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member]
Investment Owned, Fair Value	[4]			$ 60,673
Investment Owned, % of Total Capital (Net Asset Value)	[4]			4.64%
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]	$ 19,981		$ 60,673
Investment Owned, % of Total Capital (Net Asset Value)	[4]	1.58%		4.64%
Investment Owned, Underlying Face Amount, at Face Value	[4]	$ 80,000		$ 510,000
Investment Owned, at Cost	[4]	106,503		652,026
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]			47,552
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]			60,794
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]			47,552
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]			60,794
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Swap [Member]
Investment Owned, Fair Value	[1]			$ 11,944,753
Investment Owned, % of Total Capital (Net Asset Value)	[1]			88.34%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Swap [Member] | Frontier XXXIV Balanced Select Swap (U.S.) [Member]
Investment Owned, Fair Value	[1]			$ 11,944,753
Investment Owned, % of Total Capital (Net Asset Value)	[1]			88.34%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Private Investment Companies [Member]
Investment Owned, Fair Value	[2]	$ 9,974,115		$ 13,809,892
Investment Owned, % of Total Capital (Net Asset Value)	[2]	87.43%		102.14%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC [Member]
Investment Owned, Fair Value	[2]			$ 668,428
Investment Owned, % of Total Capital (Net Asset Value)	[2]			4.94%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Doherty Feeder Fund (528) LLC [Member]
Investment Owned, Fair Value	[2]			$ 1,913,873
Investment Owned, % of Total Capital (Net Asset Value)	[2]			14.15%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC [Member]
Investment Owned, Fair Value	[2]	$ 2,407,414		$ 2,589,148
Investment Owned, % of Total Capital (Net Asset Value)	[2]	21.10%		19.15%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - QIM Feeder Fund (526) LLC [Member]
Investment Owned, Fair Value	[2]	$ 1,383,560		$ 2,556,118
Investment Owned, % of Total Capital (Net Asset Value)	[2]	12.13%		18.90%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Quest Feeder Fund (517) LLC [Member]
Investment Owned, Fair Value	[2]	$ 814,635		$ 533,194
Investment Owned, % of Total Capital (Net Asset Value)	[2]	7.14%		3.94%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Investment Owned, Fair Value	[2]	$ 1,437,282		$ 2,679,197
Investment Owned, % of Total Capital (Net Asset Value)	[2]	12.60%		19.81%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Investment Owned, Fair Value	[2]	$ 2,500,848		$ 2,583,294
Investment Owned, % of Total Capital (Net Asset Value)	[2]	21.92%		19.11%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - TT Feeder Fund (531) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]			0.00%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - LRR Feeder Fund (522) LLC [Member]
Investment Owned, Fair Value	[2]			$ 286,640
Investment Owned, % of Total Capital (Net Asset Value)	[2]			2.12%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - JL Cyril Systematic Feeder Fund (547) LLC) [Member]
Investment Owned, Fair Value	[2]	$ 1,430,376
Investment Owned, % of Total Capital (Net Asset Value)	[2]	12.54%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Investment in Unconsolidated Trading Companies [Member]
Investment Owned, Fair Value	[2]			$ 50,867
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%		0.38%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Investment in Unconsolidated Trading Companies [Member] | Frontier Trading Company XXXVIII, LLC [Member]
Investment Owned, Fair Value	[2]			$ 50,867
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%		0.38%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Investment in Unconsolidated Trading Companies [Member] | Frontier Trading Company XXXIX, LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member]
Investment Owned, Fair Value	[4]			$ 209,799
Investment Owned, % of Total Capital (Net Asset Value)	[4]			1.55%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]			$ 209,799
Investment Owned, % of Total Capital (Net Asset Value)	[4]	0.00%		1.55%
Investment Owned, Underlying Face Amount, at Face Value	[4]	$ 80,000		$ 510,000
Investment Owned, at Cost	[4]	106,503		652,026
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]			164,427
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]			210,217
Investment Owned, at Cost	[4]
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member]
Investment Owned, Fair Value	[5]	$ 235,262		$ 54,119
Investment Owned, % of Total Capital (Net Asset Value)	[5]	2.05%		0.41%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Agriculture Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]	$ 167,759		$ 22,437
Investment Owned, % of Total Capital (Net Asset Value)	[5]	1.47%		0.17%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Base Metals Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value		$ 65,902	[5]	$ (3,344)	[6]
Investment Owned, % of Total Capital (Net Asset Value)		(0.58%)	[5]	(0.20%)	[6]
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various energy futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[6]			$ (735)
Investment Owned, % of Total Capital (Net Asset Value)	[6]			(0.01%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (Europe) [Member]
Investment Owned, Fair Value	[5]	$ 197,574		$ (2,763)
Investment Owned, % of Total Capital (Net Asset Value)	[5]	1.73%		(0.02%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various precious metal futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]			$ 45,590
Investment Owned, % of Total Capital (Net Asset Value)	[5]			0.34%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various soft futures contracts (Far East) [Member]
Investment Owned, Fair Value	[5]			$ 709
Investment Owned, % of Total Capital (Net Asset Value)	[5]			0.01%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Soft Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]			$ 1,740
Investment Owned, % of Total Capital (Net Asset Value)	[5]			0.01%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various stock index futures contracts (Europe) [Member]
Investment Owned, Fair Value	[6]			$ (2,506)
Investment Owned, % of Total Capital (Net Asset Value)	[6]			(0.02%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Stock Index Futures Contracts (Far East) [Member]
Investment Owned, Fair Value	[6]			$ (7,157)
Investment Owned, % of Total Capital (Net Asset Value)	[6]			(0.05%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various stock index futures contracts (Oceanic) [Member]
Investment Owned, Fair Value	[6]			$ (21,237)
Investment Owned, % of Total Capital (Net Asset Value)	[6]			(0.16%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various stock index futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[6]			$ 21,385
Investment Owned, % of Total Capital (Net Asset Value)	[6]			0.16%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various agriculture futures contracts (Far East) [Member]
Investment Owned, Fair Value	[5]	$ 502
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Currency Futures Contracts (Europe) [Member]
Investment Owned, Fair Value	[5]	$ (15,137)
Investment Owned, % of Total Capital (Net Asset Value)	[5]	(0.13%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Currency Futures Contracts (Latin America) [Member]
Investment Owned, Fair Value	[5]	$ (30,905)
Investment Owned, % of Total Capital (Net Asset Value)	[5]	(0.27%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various currency futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]	$ 375
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various energy futures contracts (U.S.) One [Member]
Investment Owned, Fair Value	[5]	$ (29,500)
Investment Owned, % of Total Capital (Net Asset Value)	[5]	(0.26%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (Far East) [Member]
Investment Owned, Fair Value	[5]	$ 6,926
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.06%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (Oceanic) [Member]
Investment Owned, Fair Value	[5]	$ 65,560
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.57%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]	$ (3,937)
Investment Owned, % of Total Capital (Net Asset Value)	[5]	(0.03%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various precious metal futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]	$ (42,070)
Investment Owned, % of Total Capital (Net Asset Value)	[5]	(0.37%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various soft futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]	$ (15,983)
Investment Owned, % of Total Capital (Net Asset Value)	[5]	(0.14%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member]
Investment Owned, Fair Value	[5]	$ 295,037		$ 2,938
Investment Owned, % of Total Capital (Net Asset Value)	[5]	(2.57%)		0.01%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various Base Metals Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]			$ (6,369)
Investment Owned, % of Total Capital (Net Asset Value)	[5]			(0.05%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (Europe) [Member]
Investment Owned, Fair Value		$ (126,110)	[5]	$ 9,573	[6]
Investment Owned, % of Total Capital (Net Asset Value)		(1.11%)	[5]	0.07%	[6]
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various precious metal futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]	$ 41,900
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.37%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various Soft Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]	$ (6,259)		$ (3,340)
Investment Owned, % of Total Capital (Net Asset Value)	[5]	(0.05%)		(0.02%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various stock index futures contracts (Europe) [Member]
Investment Owned, Fair Value	[5]	$ 3,848
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.03%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various Stock Index Futures Contracts (Far East) [Member]
Investment Owned, Fair Value	[5]	$ (2,510)
Investment Owned, % of Total Capital (Net Asset Value)	[5]	(0.02%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various Agriculture Futures Contracts (Europe) [Member]
Investment Owned, Fair Value	[5]			$ (1,410)
Investment Owned, % of Total Capital (Net Asset Value)	[5]			(0.01%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various energy futures contracts (U.S.) [Member]
Investment Owned, Fair Value		$ (7,180)	[5]	$ 3,380	[6]
Investment Owned, % of Total Capital (Net Asset Value)		(0.06%)	[5]	0.02%	[6]
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various interest rates futures contracts (Far East) [Member]
Investment Owned, Fair Value	[6]			$ 1,104
Investment Owned, % of Total Capital (Net Asset Value)	[6]			0.01%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various Soft Futures Contracts (Far East) [Member]
Investment Owned, Fair Value	[6]			$ 1,104
Investment Owned, % of Total Capital (Net Asset Value)	[6]			0.01%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various agriculture futures contracts (Far East) One [Member]
Investment Owned, Fair Value	[5]	$ 3,089
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.03%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various Agriculture Futures Contracts (U.S.) One [Member]
Investment Owned, Fair Value	[5]	$ (190,350)
Investment Owned, % of Total Capital (Net Asset Value)	[5]	(1.67%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various base metals futures contracts (U.S.) One [Member]
Investment Owned, Fair Value	[5]	$ 10,036
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.09%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various currency futures contracts (Europe) One [Member]
Investment Owned, Fair Value	[5]	$ 1,219
Investment Owned, % of Total Capital (Net Asset Value)	[5]	(0.01%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various currency futures contracts (Latin America) One [Member]
Investment Owned, Fair Value	[5]	$ 20,340
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.18%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various currency futures contracts (U.S.) One [Member]
Investment Owned, Fair Value	[5]	$ 7,925
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.07%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (Europe) One [Member]
Investment Owned, Fair Value	[5]	$ (7,202)
Investment Owned, % of Total Capital (Net Asset Value)	[5]	(0.06%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various interest rates futures contracts (Oceanic) One [Member]
Investment Owned, Fair Value	[5]	$ (34,704)
Investment Owned, % of Total Capital (Net Asset Value)	[5]	(0.30%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various interest rates futures contracts (U.S.) One [Member]
Investment Owned, Fair Value	[5]	$ (5,563)
Investment Owned, % of Total Capital (Net Asset Value)	[5]	(0.05%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various stock index futures contracts (Canada) [Member]
Investment Owned, Fair Value	[5]	$ (1,078)
Investment Owned, % of Total Capital (Net Asset Value)	[5]	(0.01%)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | CURRENCY FORWARDS [Member]
Investment Owned, Fair Value	[5]			$ 59,127
Investment Owned, % of Total Capital (Net Asset Value)	[5]			0.44%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | CURRENCY FORWARDS [Member] | Various Currency Forwards Contracts (NA) [Member]
Investment Owned, Fair Value	[5]			$ 59,127
Investment Owned, % of Total Capital (Net Asset Value)	[5]			0.44%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Open Trade Equity (Deficit) [Member]
Investment Owned, Fair Value	[5]	$ (59,775)		$ 116,184
Investment Owned, % of Total Capital (Net Asset Value)	[5]	(0.52%)		0.86%
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | U.S. Treasury Securities One [Member]
Investment Owned, Fair Value	[4]			$ 164,427
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | U.S. Treasury Securities One [Member]
Investment Owned, Fair Value	[4]			210,217
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Swap [Member]
Investment Owned, Fair Value	[1]
Investment Owned, % of Total Capital (Net Asset Value)	[1]
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Swap [Member] | Frontier XXXIV Balanced Select Swap (U.S.) [Member]
Investment Owned, Fair Value	[1]
Investment Owned, % of Total Capital (Net Asset Value)	[1]
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Private Investment Companies [Member]
Investment Owned, Fair Value	[2]	$ 1,436,833		$ 2,184,240
Investment Owned, % of Total Capital (Net Asset Value)	[2]	91.66%		113.87%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Doherty Feeder Fund (528) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%		0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - QIM Feeder Fund (526) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%		0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Quest Feeder Fund (517) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%		0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%		0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Investment Owned, Fair Value	[2]	$ 831,123		$ 835,386
Investment Owned, % of Total Capital (Net Asset Value)	[2]	53.02%		43.55%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - TT Feeder Fund (531) LLC [Member]
Investment Owned, Fair Value	[2]			$ 1,348,854
Investment Owned, % of Total Capital (Net Asset Value)	[2]			70.32%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - LRR Feeder Fund (522) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Investment in Unconsolidated Trading Companies [Member]
Investment Owned, Fair Value	[2]	$ 4,856		$ 505,355
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.31%		26.34%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Investment in Unconsolidated Trading Companies [Member] | Frontier Trading Company XXXVIII, LLC [Member]
Investment Owned, Fair Value	[2]	$ 4,856		$ 26,331
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.31%		1.37%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Investment in Unconsolidated Trading Companies [Member] | Frontier Trading Company XXXIX, LLC [Member]
Investment Owned, Fair Value	[2]			$ 479,024
Investment Owned, % of Total Capital (Net Asset Value)	[2]			24.97%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member]
Investment Owned, Fair Value	[4]	$ 5,022		$ 108,603
Investment Owned, % of Total Capital (Net Asset Value)	[4]			5.66%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]	$ 6,629		$ 108,603
Investment Owned, % of Total Capital (Net Asset Value)	[4]	0.42%		5.66%
Investment Owned, Underlying Face Amount, at Face Value	[4]	$ 80,000		$ 510,000
Investment Owned, at Cost	[4]	106,503		652,026
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]			85,116
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]			108,820
Investment Owned, at Cost	[4]	6,686
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%		0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Agriculture Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Base Metals Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various energy futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[6]
Investment Owned, % of Total Capital (Net Asset Value)	[6]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (Europe) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various precious metal futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various soft futures contracts (Far East) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Soft Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various stock index futures contracts (Europe) [Member]
Investment Owned, Fair Value	[6]
Investment Owned, % of Total Capital (Net Asset Value)	[6]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Stock Index Futures Contracts (Far East) [Member]
Investment Owned, Fair Value	[6]
Investment Owned, % of Total Capital (Net Asset Value)	[6]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various stock index futures contracts (Oceanic) [Member]
Investment Owned, Fair Value	[6]
Investment Owned, % of Total Capital (Net Asset Value)	[6]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various stock index futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[6]
Investment Owned, % of Total Capital (Net Asset Value)	[6]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%		0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various Base Metals Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (Europe) [Member]
Investment Owned, Fair Value			[5]		[6]
Investment Owned, % of Total Capital (Net Asset Value)		0.00%	[5]	0.00%	[6]
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various Soft Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various Agriculture Futures Contracts (Europe) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various energy futures contracts (U.S.) [Member]
Investment Owned, Fair Value			[5]		[6]
Investment Owned, % of Total Capital (Net Asset Value)		0.00%	[5]	0.00%	[6]
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various interest rates futures contracts (Far East) [Member]
Investment Owned, Fair Value	[6]
Investment Owned, % of Total Capital (Net Asset Value)	[6]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various Soft Futures Contracts (Far East) [Member]
Investment Owned, Fair Value	[6]
Investment Owned, % of Total Capital (Net Asset Value)	[6]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | CURRENCY FORWARDS [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | CURRENCY FORWARDS [Member] | Various Currency Forwards Contracts (NA) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]			0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Open Trade Equity (Deficit) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%		0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | U.S. Treasury Securities One [Member]
Investment Owned, Fair Value	[4]			$ 85,116
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | U.S. Treasury Securities One [Member]
Investment Owned, Fair Value	[4]			108,820
The Series of Frontier Funds [Member] | Frontier Global Fund (formerly Frontier Winton Fund) [Member] | Swap [Member]
Investment Owned, Fair Value	[1]
Investment Owned, % of Total Capital (Net Asset Value)	[1]
The Series of Frontier Funds [Member] | Frontier Global Fund (formerly Frontier Winton Fund) [Member] | Swap [Member] | Frontier Brevan Howard Swap (U.S.) [Member]
Investment Owned, Fair Value	[1]
Investment Owned, % of Total Capital (Net Asset Value)	[1]
The Series of Frontier Funds [Member] | Frontier Global Fund (formerly Frontier Winton Fund) [Member] | Private Investment Companies [Member]
Investment Owned, Fair Value	[2]	$ 3,040,737		$ 5,022,967
Investment Owned, % of Total Capital (Net Asset Value)	[2]	103.09%		139.99%
The Series of Frontier Funds [Member] | Frontier Global Fund (formerly Frontier Winton Fund) [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Investment Owned, Fair Value	[2]	$ 3,040,737		$ 5,022,967
Investment Owned, % of Total Capital (Net Asset Value)	[2]	103.09%		139.99%
The Series of Frontier Funds [Member] | Frontier Global Fund (formerly Frontier Winton Fund) [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Investment Owned, Fair Value	[2]
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.00%
The Series of Frontier Funds [Member] | Frontier Global Fund (formerly Frontier Winton Fund) [Member] | Investment in Unconsolidated Trading Companies [Member]
Investment Owned, Fair Value	[2]	$ 13,279		$ 11,818
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.45%		0.33%
The Series of Frontier Funds [Member] | Frontier Global Fund (formerly Frontier Winton Fund) [Member] | Investment in Unconsolidated Trading Companies [Member] | Frontier Trading Company XXXVIII, LLC [Member]
Investment Owned, Fair Value	[2]	$ 13,279		$ 11,818
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.45%		0.33%
The Series of Frontier Funds [Member] | Frontier Global Fund (formerly Frontier Winton Fund) [Member] | Additional Disclosure on U.S. Treasury Securities [Member]
Investment Owned, Fair Value	[4]			$ 48,741
Investment Owned, % of Total Capital (Net Asset Value)	[4]			1.36%
The Series of Frontier Funds [Member] | Frontier Global Fund (formerly Frontier Winton Fund) [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]	$ 18,127		$ 48,741
Investment Owned, % of Total Capital (Net Asset Value)	[4]	0.61%		1.36%
Investment Owned, Underlying Face Amount, at Face Value	[4]	$ 80,000		$ 510,000
Investment Owned, at Cost	[4]	106,503		652,026
The Series of Frontier Funds [Member] | Frontier Global Fund (formerly Frontier Winton Fund) [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]	13,733		38,200
The Series of Frontier Funds [Member] | Frontier Global Fund (formerly Frontier Winton Fund) [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]			48,838
Investment Owned, at Cost	[4]	18,283
The Series of Frontier Funds [Member] | Frontier Global Fund (formerly Frontier Winton Fund) [Member] | U.S. Treasury Securities One [Member]
Investment Owned, Fair Value	[4]			38,200
The Series of Frontier Funds [Member] | Frontier Global Fund (formerly Frontier Winton Fund) [Member] | U.S. Treasury Securities One [Member]
Investment Owned, Fair Value	[4]			48,838
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member] | Swap [Member]
Investment Owned, Fair Value	[1]			$ 2,888,008
Investment Owned, % of Total Capital (Net Asset Value)	[1]			18.14%
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member] | Swap [Member] | Frontier Brevan Howard Swap (U.S.) [Member]
Investment Owned, Fair Value	[1]			$ 2,888,008
Investment Owned, % of Total Capital (Net Asset Value)	[1]			18.14%
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member] | Private Investment Companies [Member]
Investment Owned, Fair Value	[2]	$ 2,089,460		$ 2,259,678
Investment Owned, % of Total Capital (Net Asset Value)	[2]	96.38%		79.96%
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Investment Owned, Fair Value	[2]	$ 1,405,005		$ 1,473,432
Investment Owned, % of Total Capital (Net Asset Value)	[2]	64.81%		52.14%
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Investment Owned, Fair Value	[2]	$ 684,455		$ 786,246
Investment Owned, % of Total Capital (Net Asset Value)	[2]	31.51%		27.82%
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member] | Investment in Unconsolidated Trading Companies [Member]
Investment Owned, Fair Value	[2]	$ 19,916		$ 18,891
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.92%		0.67%
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member] | Investment in Unconsolidated Trading Companies [Member] | Frontier Trading Company XXXVIII, LLC [Member]
Investment Owned, Fair Value	[2]	$ 19,916		$ 18,891
Investment Owned, % of Total Capital (Net Asset Value)	[2]	0.92%		0.67%
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member]
Investment Owned, Fair Value	[4]			$ 77,916
Investment Owned, % of Total Capital (Net Asset Value)	[4]			2.76%
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]	$ 27,187		$ 77,916
Investment Owned, % of Total Capital (Net Asset Value)	[4]	1.25%		2.76%
Investment Owned, Underlying Face Amount, at Face Value	[4]	$ 80,000		$ 510,000
Investment Owned, at Cost	[4]	106,503		652,026
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]	20,597		61,065
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value	[4]			78,071
Investment Owned, at Cost	[4]	27,421
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member] | U.S. Treasury Securities One [Member]
Investment Owned, Fair Value	[4]			61,065
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member] | U.S. Treasury Securities One [Member]
Investment Owned, Fair Value	[4]			78,071
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - JL Cyril Systematic Feeder Fund (547) LLC) [Member]
Investment Owned, Fair Value	[2]	$ 605,710
Investment Owned, % of Total Capital (Net Asset Value)	[2]	38.64%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Agriculture Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Base Metals Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (Europe) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various agriculture futures contracts (Far East) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Currency Futures Contracts (Europe) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Currency Futures Contracts (Latin America) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various currency futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various energy futures contracts (U.S.) One [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (Far East) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (Oceanic) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various precious metal futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | LONG FUTURES CONTRACTS [Member] | Various soft futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various precious metal futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various Soft Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various stock index futures contracts (Europe) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various Stock Index Futures Contracts (Far East) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various agriculture futures contracts (Far East) One [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various Agriculture Futures Contracts (U.S.) One [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various base metals futures contracts (U.S.) One [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various currency futures contracts (Europe) One [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various currency futures contracts (Latin America) One [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various currency futures contracts (U.S.) One [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (Europe) One [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various interest rates futures contracts (Oceanic) One [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various interest rates futures contracts (U.S.) One [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | SHORT FUTURES CONTRACTS [Member] | Various stock index futures contracts (Canada) [Member]
Investment Owned, Fair Value	[5]
Investment Owned, % of Total Capital (Net Asset Value)	[5]	0.00%
Frontier Funds [Member] | Swap [Member]
Investment Owned, Fair Value	[7]	$ 12,451,549		$ 21,579,865
Investment Owned, % of Total Capital (Net Asset Value)	[7]	48.20%		44.45%
Frontier Funds [Member] | Swap [Member] | Frontier XXXV Diversified Select Swap (U.S.) [Member]
Investment Owned, Fair Value	[7]	$ 4,553,855		$ 6,384,583
Investment Owned, % of Total Capital (Net Asset Value)	[7]	17.63%		13.15%
Frontier Funds [Member] | Swap [Member] | Frontier XXXVII L/S Select Swap (U.S.) [Member]
Investment Owned, Fair Value	[7]	$ 578,274		$ 362,521
Investment Owned, % of Total Capital (Net Asset Value)	[7]	2.24%		0.75%
Frontier Funds [Member] | Swap [Member] | Frontier XXXIV Balanced Select Swap (U.S.) [Member]
Investment Owned, Fair Value	[7]	$ 7,319,420		$ 11,944,753
Investment Owned, % of Total Capital (Net Asset Value)	[7]	28.33%		24.60%
Frontier Funds [Member] | Swap [Member] | Frontier Brevan Howard Swap (U.S.) [Member]
Investment Owned, Fair Value	[7]			$ 2,888,008
Investment Owned, % of Total Capital (Net Asset Value)	[7]	0.00%		5.95%
Frontier Funds [Member] | Private Investment Companies [Member]
Investment Owned, Fair Value	[8]	$ 22,967,286		$ 35,926,037
Investment Owned, % of Total Capital (Net Asset Value)	[8]	76.67%		73.99%
Frontier Funds [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC [Member]
Investment Owned, Fair Value	[8]			$ 1,484,422
Investment Owned, % of Total Capital (Net Asset Value)	[8]			3.06%
Frontier Funds [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Doherty Feeder Fund (528) LLC [Member]
Investment Owned, Fair Value	[8]			$ 3,180,963
Investment Owned, % of Total Capital (Net Asset Value)	[8]	0.00%		6.55%
Frontier Funds [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC [Member]
Investment Owned, Fair Value	[8]	$ 3,409,886		$ 4,620,630
Investment Owned, % of Total Capital (Net Asset Value)	[8]	13.20%		9.52%
Frontier Funds [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - QIM Feeder Fund (526) LLC [Member]
Investment Owned, Fair Value	[8]			$ 4,016,291
Investment Owned, % of Total Capital (Net Asset Value)	[8]			8.27%
Frontier Funds [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Quest Feeder Fund (517) LLC [Member]
Investment Owned, Fair Value	[8]	$ 1,362,594		$ 1,032,745
Investment Owned, % of Total Capital (Net Asset Value)	[8]	5.27%		2.13%
Frontier Funds [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Investment Owned, Fair Value	[8]	$ 7,329,409		$ 12,052,434
Investment Owned, % of Total Capital (Net Asset Value)	[8]	28.37%		24.82%
Frontier Funds [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Investment Owned, Fair Value	[8]	$ 5,313,882		$ 6,565,468
Investment Owned, % of Total Capital (Net Asset Value)	[8]	20.57%		13.52%
Frontier Funds [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - TT Feeder Fund (531) LLC [Member]
Investment Owned, Fair Value	[8]			$ 1,821,275
Investment Owned, % of Total Capital (Net Asset Value)	[8]			3.75%
Frontier Funds [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - LRR Feeder Fund (522) LLC [Member]
Investment Owned, Fair Value	[8]	$ 425,920		$ 994,036
Investment Owned, % of Total Capital (Net Asset Value)	[8]	1.65%		2.05%
Frontier Funds [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - TT Feeder Fund (531) LLC [Member]
Investment Owned, Fair Value	[8]
Investment Owned, % of Total Capital (Net Asset Value)	[8]	0.00%
Frontier Funds [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - JL Cyril Systematic Feeder Fund (547) LLC) [Member]
Investment Owned, Fair Value	[8]	$ 3,159,547
Investment Owned, % of Total Capital (Net Asset Value)	[8]	0.00%
Frontier Funds [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC [Member]
Investment Owned, Fair Value	[8]
Investment Owned, % of Total Capital (Net Asset Value)	[8]	0.00%
Frontier Funds [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - QIM Feeder Fund (526) LLC [Member]
Investment Owned, Fair Value	[8]	$ 188,695
Investment Owned, % of Total Capital (Net Asset Value)	[8]	7.31%
Frontier Funds [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Quantmetrics Feeder Fund (527) LLC [Member]
Investment Owned, Fair Value	[8]
Investment Owned, % of Total Capital (Net Asset Value)	[8]	0.00%
Frontier Funds [Member] | Private Investment Companies [Member] | Galaxy Plus Fund - Quest Fit Feeder Fund (535) LLC [Member]
Investment Owned, Fair Value	[8]	$ 77,353		$ 157,773
Investment Owned, % of Total Capital (Net Asset Value)	[8]	0.30%		0.32%
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member]
Investment Owned, Fair Value		$ 235,262	[9]	$ 54,119	[6]
Investment Owned, % of Total Capital (Net Asset Value)		0.90%	[9]	0.10%	[6]
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various Agriculture Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value		$ 167,759	[9]	$ 22,437	[6]
Investment Owned, % of Total Capital (Net Asset Value)		0.65%	[9]	0.05%	[6]
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various Base Metals Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value		$ (65,902)	[9]	$ (3,344)	[6]
Investment Owned, % of Total Capital (Net Asset Value)		(0.26%)	[9]	(0.01%)	[6]
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various energy futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[6]			$ (735)
Investment Owned, % of Total Capital (Net Asset Value)	[6]			0.00%
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (Europe) [Member]
Investment Owned, Fair Value		$ 197,574	[9]	$ (2,763)	[6]
Investment Owned, % of Total Capital (Net Asset Value)		0.76%	[9]	(0.01%)	[6]
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various precious metal futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[6]			$ 45,590
Investment Owned, % of Total Capital (Net Asset Value)	[6]			0.09%
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various Soft Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value	[6]			$ 1,740
Investment Owned, % of Total Capital (Net Asset Value)	[6]			0.00%
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various stock index futures contracts (Europe) [Member]
Investment Owned, Fair Value	[6]			$ (2,506)
Investment Owned, % of Total Capital (Net Asset Value)	[6]			(0.01%)
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various Stock Index Futures Contracts (Far East) [Member]
Investment Owned, Fair Value	[6]			$ (7,157)
Investment Owned, % of Total Capital (Net Asset Value)	[6]			(0.01%)
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various stock index futures contracts (Oceanic) [Member]
Investment Owned, Fair Value	[6]			$ (21,237)
Investment Owned, % of Total Capital (Net Asset Value)	[6]			(0.04%)
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various Soft Futures Contracts (Far East) [Member]
Investment Owned, Fair Value	[6]			$ 709
Investment Owned, % of Total Capital (Net Asset Value)	[6]			0.00%
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various agriculture futures contracts (Far East) [Member]
Investment Owned, Fair Value	[9]	$ 502
Investment Owned, % of Total Capital (Net Asset Value)	[9]	0.00%
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various Currency Futures Contracts (Europe) [Member]
Investment Owned, Fair Value	[9]	$ (15,137)
Investment Owned, % of Total Capital (Net Asset Value)	[9]	(0.06%)
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various Currency Futures Contracts (Latin America) [Member]
Investment Owned, Fair Value	[9]	$ (30,905)
Investment Owned, % of Total Capital (Net Asset Value)	[9]	(0.12%)
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various currency futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[9]	$ 375
Investment Owned, % of Total Capital (Net Asset Value)	[9]	0.00%
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various energy futures contracts (U.S.) One [Member]
Investment Owned, Fair Value	[9]	$ (29,500)
Investment Owned, % of Total Capital (Net Asset Value)	[9]	(0.11%)
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (Far East) [Member]
Investment Owned, Fair Value	[9]	$ 6,926
Investment Owned, % of Total Capital (Net Asset Value)	[9]	0.03%
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (Oceanic) [Member]
Investment Owned, Fair Value	[9]	$ 65,560
Investment Owned, % of Total Capital (Net Asset Value)	[9]	0.25%
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value	[9]	$ (3,937)
Investment Owned, % of Total Capital (Net Asset Value)	[9]	(0.02%)
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various precious metal futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[9]	$ (42,070)
Investment Owned, % of Total Capital (Net Asset Value)	[9]	(0.16%)
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various soft futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[9]	$ (15,983)
Investment Owned, % of Total Capital (Net Asset Value)	[9]	(0.06%)
Frontier Funds [Member] | LONG FUTURES CONTRACTS [Member] | Various Stock Index Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value	[6]			$ 21,385
Investment Owned, % of Total Capital (Net Asset Value)	[6]			0.04%
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member]
Investment Owned, Fair Value		$ (295,037)	[9]	$ 2,937	[6]
Investment Owned, % of Total Capital (Net Asset Value)		(1.14%)	[9]	0.01%	[6]
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various Agriculture Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value		$ (190,350)	[9]	$ (1,410)	[6]
Investment Owned, % of Total Capital (Net Asset Value)		(0.74%)	[9]	0.00%	[6]
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various energy futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[6]			$ 3,380
Investment Owned, % of Total Capital (Net Asset Value)	[6]			0.01%
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (Europe) [Member]
Investment Owned, Fair Value	[6]			$ 9,572
Investment Owned, % of Total Capital (Net Asset Value)	[6]			0.02%
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various precious metal futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[6]			$ (6,369)
Investment Owned, % of Total Capital (Net Asset Value)	[6]			(0.01%)
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various Soft Futures Contracts (U.S.) [Member]
Investment Owned, Fair Value	[6]			$ (3,340)
Investment Owned, % of Total Capital (Net Asset Value)	[6]			(0.01%)
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various stock index futures contracts (Europe) [Member]
Investment Owned, Fair Value	[9]	$ 3,848
Investment Owned, % of Total Capital (Net Asset Value)	[9]	0.01%
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various Stock Index Futures Contracts (Far East) [Member]
Investment Owned, Fair Value		$ (2,510)
Investment Owned, % of Total Capital (Net Asset Value)		(0.01%)
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (Far East) [Member]
Investment Owned, Fair Value	[6]			$ 1,104
Investment Owned, % of Total Capital (Net Asset Value)	[6]			0.00%
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various agriculture futures contracts (Far East) One [Member]
Investment Owned, Fair Value	[9]	$ 3,089
Investment Owned, % of Total Capital (Net Asset Value)	[9]	0.01%
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various base metals futures contracts (U.S.) One [Member]
Investment Owned, Fair Value	[9]	$ 10,036
Investment Owned, % of Total Capital (Net Asset Value)	[9]	0.04%
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various currency futures contracts (Europe) One [Member]
Investment Owned, Fair Value	[9]	$ (1,219)
Investment Owned, % of Total Capital (Net Asset Value)	[9]	0.00%
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various currency futures contracts (Latin America) One [Member]
Investment Owned, Fair Value	[9]	$ 20,340
Investment Owned, % of Total Capital (Net Asset Value)	[9]	0.08%
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various currency futures contracts (U.S.) One [Member]
Investment Owned, Fair Value	[9]	$ 7,925
Investment Owned, % of Total Capital (Net Asset Value)	[9]	0.03%
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various Interest Rates Futures Contracts (Europe) One [Member]
Investment Owned, Fair Value	[9]	$ (7,202)
Investment Owned, % of Total Capital (Net Asset Value)	[9]	(0.03%)
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various interest rates futures contracts (Oceanic) One [Member]
Investment Owned, Fair Value	[9]	$ (34,704)
Investment Owned, % of Total Capital (Net Asset Value)	[9]	(0.13%)
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various interest rates futures contracts (U.S.) One [Member]
Investment Owned, Fair Value	[9]	$ (5,563)
Investment Owned, % of Total Capital (Net Asset Value)	[9]	(0.02%)
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various stock index futures contracts (Canada) [Member]
Investment Owned, Fair Value		$ (1,078)
Investment Owned, % of Total Capital (Net Asset Value)		0.00%
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various energy futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[9]	$ (7,180)
Investment Owned, % of Total Capital (Net Asset Value)	[9]	(0.03%)
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various interest rates futures contracts (Europe) One [Member]
Investment Owned, Fair Value	[9]	$ (126,110)
Investment Owned, % of Total Capital (Net Asset Value)	[9]	(0.49%)
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various precious metal futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[9]	$ 41,900
Investment Owned, % of Total Capital (Net Asset Value)	[9]	0.16%
Frontier Funds [Member] | SHORT FUTURES CONTRACTS [Member] | Various soft futures contracts (U.S.) [Member]
Investment Owned, Fair Value	[9]	$ (6,259)
Investment Owned, % of Total Capital (Net Asset Value)	[9]	(0.02%)
Frontier Funds [Member] | CURRENCY FORWARDS [Member] | Open Trade Equity (Deficit) [Member]
Investment Owned, Fair Value		$ (59,775)	[9]	$ 116,184	[6]
Investment Owned, % of Total Capital (Net Asset Value)		(0.24%)	[9]	0.23%	[6]
Frontier Funds [Member] | Additional Disclosure on U.S. Treasury Securities [Member]
Investment Owned, Fair Value		$ 105,594		$ 650,728
Investment Owned, % of Total Capital (Net Asset Value)		0.41%		1.34%
Frontier Funds [Member] | Additional Disclosure on U.S. Treasury Securities [Member] | US Treasury Note [Member]
Investment Owned, Fair Value		$ 105,594		$ 650,728
Investment Owned, % of Total Capital (Net Asset Value)		0.41%		1.34%
Investment Owned, Underlying Face Amount, at Face Value		$ 80,000		$ 510,000
Investment Owned, at Cost		$ 106,503		652,026
Frontier Funds [Member] | CURRENCY FORWARDS [Member] | Various Currency Forwards Contracts (NA) [Member]
Investment Owned, Fair Value	[6]			$ 59,128
Investment Owned, % of Total Capital (Net Asset Value)	[6]			0.12%
Frontier Funds [Member] | CURRENCY FORWARDS [Member] | Total Currency Forwards [Member]
Investment Owned, Fair Value	[6]			$ 59,128
Investment Owned, % of Total Capital (Net Asset Value)	[6]			12.00%
[1]	See Note 4 to the Financial Statements.
[2]	See Note 5 to the Financial Statements.
[3]	Impact of incentive fee computed using average net assets, otherwise computed using average units outstanding during the period prior to the effects of any non-controlling transactions. An owner's total returns may vary from the above returns based on the timing of contributions and withdrawals. Total returns are not annualized.
[4]	See Note 2 to the Financial Statements.
[5]	Except for those items disclosed, no individual futures, or forwards position constituted greater than 1 percent of Net Asset Value. Accordingly, the number of contracts and expiration dates are not presented.
[6]	Except for those items disclosed, no individual futures, forwards and option on futures contract position constituted greater than 1 percent of Net Asset Value. Accordingly, the number of contracts and expiration dates are not presented.
[7]	See Notes to Consolidated Financial Statements, Note 4.
[8]	See Notes to Consolidated Financial Statements, Note 5.
[9]	Except for those items disclosed, no individual futures, forwards and option on futures contract position constituted greater than 1 percent of Net Asset Value. Accordingly, the number of contracts and expiration dates are not presented.

Statements of Operations (Unaud

Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Frontier Funds [Member]
Investment income:
Interest - net	$ 2,941	$ 16,077	$ 12,721	$ 76,983
Total Income/(loss)	2,941	16,077	12,721	76,983
Expenses:
Incentive Fees
Management Fees	(5,029)	(4,614)	(14,753)	(74,280)
Risk analysis Fees	(1,509)	(1,385)	(4,426)	(4,257)
Service Fees - Class 1	(128,178)	(253,782)	(483,402)	(803,038)
Due Diligence Fees	(2,268)		(9,111)
Trading Fees	(285,835)	(562,118)	(1,057,985)	(1,727,327)
Other Fees	(45)		(83)
Total Expenses	(422,864)	(821,899)	(1,569,760)	(2,608,902)
Investment income/(loss) - net	(419,923)	(805,822)	(1,557,039)	(2,531,919)
Realized and unrealized gain/(loss) on investments:
Net realized gain/(loss) on futures, forwards and options	167,553	(92,058)	588,112	(1,190,910)
Net unrealized gain/(loss) on private investment companies	(2,356,309)	888,297	(626,550)	5,748,034
Net realized gain/(loss) on private investment companies	11,991	(2,575)	(396,286)	(1,795,246)
Net change in open trade equity/(deficit)	(53,834)	(28,271)	(130,869)	477,877
Net realized gain/(loss) on swap contracts	(10,318)		(200,052)
Net unrealized gain/(loss) on swap contracts	(248,865)	601,127	(7,490,322)	496,204
Net realized gain/(loss) on U.S. Treasury securities	(1,058)	35,523	44,673	95,119
Net unrealized gain/(loss) on U.S. Treasury securities	(1,105)	(36,934)	3,476	(69,202)
Trading commissions	(5,477)	(9,459)	(17,535)	(29,699)
Net gain/(loss) on investments	(2,497,422)	1,355,649	(11,791,353)	3,732,176
NET INCREASE/(DECREASE) IN OWNERS' CAPITAL RESULTING FROM OPERATIONS	(2,917,345)	549,827	(13,348,392)	1,200,257
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member]
Investment income:
Interest - net	1,143	1,542	2,006	7,544
Total Income/(loss)	1,143	1,542	2,006	7,544
Expenses:
Incentive Fees
Management Fees				2,668
Service Fees - Class 1	2,062	11,313	12,712	34,708
Due Diligence Fees	1,740		7,195
Trading Fees	50,536	126,165	208,221	382,495
Other Fees
Total Expenses	54,338	137,478	228,128	419,871
Investment income/(loss) - net	(53,195)	(135,936)	(226,122)	(412,327)
Realized and unrealized gain/(loss) on investments:
Net realized gain/(loss) on futures, forwards and options
Net unrealized gain/(loss) on private investment companies	(397,041)	165,726	372,285	1,095,404
Net realized gain/(loss) on private investment companies	(51,059)	(140,151)	(1,295,055)	(589,985)
Net change in open trade equity/(deficit)
Net realized gain/(loss) on swap contracts
Net unrealized gain/(loss) on swap contracts	(75,700)	193,070	(2,099,874)	154,015
Net realized gain/(loss) on U.S. Treasury securities	509	12,056	(19,521)	11,466
Net unrealized gain/(loss) on U.S. Treasury securities	80	(8,429)	27,421	(8,854)
Trading commissions
Change in fair value of investments in unconsolidated trading companies	(1,015)	(1,298)	(5,303)	(86,911)
Net gain/(loss) on investments	(524,226)	220,974	(3,020,047)	575,135
NET INCREASE/(DECREASE) IN OWNERS' CAPITAL RESULTING FROM OPERATIONS	(577,421)	85,038	(3,246,169)	162,808
Less: Operations attributable to non-controlling interests
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS	$ (577,421)	$ 85,038	$ (3,246,169)	$ 162,808
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Class 1 [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	$ (7.61)	$ 0.28	$ (34.62)	$ 0.47
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Class 1a [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Class 2 [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	(8.88)	0.87	(40.58)	2.14
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Class 2a [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Class 3 [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	(8.26)	0.88	(37.78)	2.22
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member] | Class 3a [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member]
Investment income:
Interest - net	$ 851	$ 2,215	$ 2,329	$ 4,371
Total Income/(loss)	851	2,215	2,329	4,371
Expenses:
Incentive Fees
Management Fees				7,665
Service Fees - Class 1	407	1,256	1,501	11,010
Due Diligence Fees	438		1,641
Trading Fees	21,879	49,626	83,524	175,662
Other Fees
Total Expenses	22,724	50,882	86,666	194,337
Investment income/(loss) - net	(21,873)	(48,667)	(84,337)	(189,966)
Realized and unrealized gain/(loss) on investments:
Net realized gain/(loss) on futures, forwards and options
Net unrealized gain/(loss) on private investment companies	(226,881)	35,290	280,814	170,629
Net realized gain/(loss) on private investment companies	14,487	(47,606)	(696,820)	(147,373)
Net change in open trade equity/(deficit)
Net realized gain/(loss) on swap contracts
Net unrealized gain/(loss) on swap contracts
Net realized gain/(loss) on U.S. Treasury securities	(269)	5,274	6,092	10,671
Net unrealized gain/(loss) on U.S. Treasury securities	(76)	(7,593)	(2,674)	(4,121)
Trading commissions
Change in fair value of investments in unconsolidated trading companies	(934)	(1,813)	(6,972)	(69,323)
Net gain/(loss) on investments	(213,673)	(16,448)	(419,560)	(39,517)
NET INCREASE/(DECREASE) IN OWNERS' CAPITAL RESULTING FROM OPERATIONS	(235,546)	(65,115)	(503,897)	(229,483)
Less: Operations attributable to non-controlling interests
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS	$ (235,546)	$ (65,115)	$ (503,897)	$ (229,483)
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Class 1 [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	$ (9.77)	$ (2.60)	$ (20.13)	$ (6.37)
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Class 1a [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Class 2 [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	(11.58)	(2.35)	(23.63)	(5.93)
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Class 2a [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Class 3 [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	(10.83)	(2.14)	(22.05)	(5.38)
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member] | Class 3a [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member]
Investment income:
Interest - net	$ 906	$ 693	$ 2,025	$ 1,828
Total Income/(loss)	906	693	2,025	1,828
Expenses:
Incentive Fees
Management Fees
Service Fees - Class 1	108	134	330	448
Due Diligence Fees	90		275
Trading Fees	7,777	14,443	25,089	42,660
Other Fees
Total Expenses	7,975	14,577	25,694	43,108
Investment income/(loss) - net	(7,069)	(13,884)	(23,669)	(41,280)
Realized and unrealized gain/(loss) on investments:
Net realized gain/(loss) on futures, forwards and options
Net unrealized gain/(loss) on private investment companies	29,022	(196,972)	206,081	517,511
Net realized gain/(loss) on private investment companies	(44,189)	60,266	(394,032)	(641,976)
Net change in open trade equity/(deficit)
Net realized gain/(loss) on swap contracts
Net unrealized gain/(loss) on swap contracts	(4,244)	(51,763)	215,753	(94,964)
Net realized gain/(loss) on U.S. Treasury securities	(994)	2,456	6,224	5,161
Net unrealized gain/(loss) on U.S. Treasury securities	25	(2,391)	(1,476)	(1,996)
Trading commissions
Change in fair value of investments in unconsolidated trading companies	(1,058)	(530)	(9,851)	(1,559)
Net gain/(loss) on investments	(21,438)	(188,934)	22,699	(217,823)
NET INCREASE/(DECREASE) IN OWNERS' CAPITAL RESULTING FROM OPERATIONS	(28,507)	(202,818)	(970)	(259,103)
Less: Operations attributable to non-controlling interests
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS	$ (28,507)	$ (202,818)	$ (970)	$ (259,103)
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Class 1 [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Class 1a [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	(44.58)	(5.30)	(44.20)	(9.24)
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Class 2 [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	(1.86)	(9.76)	(0.19)	(10.06)
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Class 2a [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	(1.11)	(5.94)	(0.17)	(10.23)
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Class 3 [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	(1.95)	(10.18)	(0.24)	(10.50)
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member] | Class 3a [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	$ (1.12)	$ (6.21)	$ (0.05)	$ (10.59)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member]
Investment income:
Interest - net	$ 41	$ 11,640	$ 6,361	$ 36,502
Total Income/(loss)	41	11,640	6,361	36,502
Expenses:
Management Fees	5,029	4,614	14,753	17,979
Risk analysis Fees	1,509	1,385	4,426	4,257
Service Fees - Class 1	73,754	145,900	284,736	470,826
Trading Fees	127,677	236,156	465,170	763,616
Other Fees	45		83
Total Expenses	208,014	388,055	769,168	1,256,678
Investment income/(loss) - net	(207,973)	(376,415)	(762,807)	(1,220,176)
Realized and unrealized gain/(loss) on investments:
Net realized gain/(loss) on futures, forwards and options	167,553	(92,058)	588,112	165,840
Net unrealized gain/(loss) on private investment companies	(961,993)	236,355	(325,724)	1,703,296
Net realized gain/(loss) on private investment companies	139,086	(26,292)	(1,666,467)	(787,630)
Net change in open trade equity/(deficit)	(53,834)	(28,271)	(130,869)	(224,786)
Net realized gain/(loss) on swap contracts
Net unrealized gain/(loss) on swap contracts	(168,921)	458,043	(5,804,030)	354,147
Net realized gain/(loss) on U.S. Treasury securities	2,036	3,743	28,151	12,092
Net unrealized gain/(loss) on U.S. Treasury securities	(384)	(5,494)	(5,409)	(426)
Trading commissions	(5,477)	(9,459)	(17,535)	(25,691)
Change in fair value of investments in unconsolidated trading companies	(1,283)	(847)	(31,836)	(140,477)
Net gain/(loss) on investments	(883,217)	535,720	(7,365,607)	1,056,365
NET INCREASE/(DECREASE) IN OWNERS' CAPITAL RESULTING FROM OPERATIONS	(1,091,190)	159,305	(8,128,414)	(163,811)
Less: Operations attributable to non-controlling interests
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS	$ (1,091,190)	$ 159,305	$ (8,128,414)	$ (163,811)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Class 1 [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	$ (6.77)	$ 0.33	$ (45.41)	$ (0.94)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Class 2 [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	(10.02)	1.90	(69.40)	2.62
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Class 3a [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	(8.64)	1.64	(59.90)	2.29
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Class 1AP [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	(7.42)	1.41	(51.47)	(1.94)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member] | Class 2a [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	$ (8.71)	$ 1.58	$ (60.14)	$ 2.26
The Series of Frontier Funds [Member] | Frontier Select Fund [Member]
Investment income:
Interest - net		$ (5)		$ (5)
Total Income/(loss)		(5)		(5)
Expenses:
Incentive Fees
Management Fees
Risk analysis Fees
Service Fees - Class 1	13,025	27,710	51,117	79,777
Trading Fees	10,391	21,767	42,791	66,874
Other Fees
Total Expenses	23,416	49,477	93,908	146,651
Investment income/(loss) - net	(23,416)	(49,482)	(93,908)	(146,656)
Realized and unrealized gain/(loss) on investments:
Net realized gain/(loss) on futures, forwards and options
Net unrealized gain/(loss) on private investment companies	(193,003)	25,424	(49,653)	284,633
Net realized gain/(loss) on private investment companies	(3,202)	113,671	(285,836)	138,172
Net change in open trade equity/(deficit)
Net realized gain/(loss) on swap contracts			(102,307)
Net unrealized gain/(loss) on swap contracts
Net realized gain/(loss) on U.S. Treasury securities	(374)	6,987	3,374	18,138
Net unrealized gain/(loss) on U.S. Treasury securities	(417)	(5,819)	(3,372)	(14,497)
Trading commissions
Change in fair value of investments in unconsolidated trading companies	(728)	(1,094)	87,721	36,616
Net gain/(loss) on investments	(197,724)	139,169	(350,073)	463,062
NET INCREASE/(DECREASE) IN OWNERS' CAPITAL RESULTING FROM OPERATIONS	(221,140)	89,687	(443,981)	316,406
Less: Operations attributable to non-controlling interests
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS	$ (221,140)	$ 89,687	$ (443,981)	$ 316,406
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Class 1 [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	$ (7.69)	$ 1.73	$ (13.21)	$ 6.35
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Class 2 [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	(11.55)	3.56	(18.74)	12.34
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Class 2a [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Class 3a [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
The Series of Frontier Funds [Member] | Frontier Select Fund [Member] | Class 1AP [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	$ (8.70)	$ 2.69	$ (14.31)	$ 8.55
The Series of Frontier Funds [Member] | Frontier Global Fund [Member]
Investment income:
Interest - net		$ (2)
Total Income/(loss)		(2)
Expenses:
Incentive Fees
Management Fees
Service Fees - Class 1	22,977	45,272	81,204
Trading Fees	42,481	82,029	150,154
Other Fees
Total Expenses	65,458	127,301	231,358
Investment income/(loss) - net	(65,458)	(127,303)	(231,358)
Realized and unrealized gain/(loss) on investments:
Net realized gain/(loss) on futures, forwards and options
Net unrealized gain/(loss) on private investment companies	(465,994)	409,626	(970,042)
Net realized gain/(loss) on private investment companies	30,501	86,211	448,127
Net realized gain/(loss) on swap contracts
Net unrealized gain/(loss) on swap contracts
Net realized gain/(loss) on U.S. Treasury securities	(1,194)	231	11,338
Net unrealized gain/(loss) on U.S. Treasury securities	69	(3,190)	(3,645)
Trading commissions
Change in fair value of investments in unconsolidated trading companies	(1,415)	(1,261)	(10,687)
Net gain/(loss) on investments	(438,033)	491,617	(524,909)
NET INCREASE/(DECREASE) IN OWNERS' CAPITAL RESULTING FROM OPERATIONS	(503,491)	364,314	(756,267)
Less: Operations attributable to non-controlling interests
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS	$ (503,491)	$ 364,314	(756,267)
The Series of Frontier Funds [Member] | Frontier Global Fund [Member]
Investment income:
Interest - net				$ (2)
Total Income/(loss)				(2)
Expenses:
Management Fees				38,679
Service Fees - Class 1				140,174
Trading Fees				207,342
Total Expenses				386,195
Investment income/(loss) - net				(386,197)
Realized and unrealized gain/(loss) on investments:
Net realized gain/(loss) on futures, forwards and options
Net unrealized gain/(loss) on private investment companies				1,963,540
Net realized gain/(loss) on private investment companies				(279,918)
Net realized gain/(loss) on swap contracts
Net unrealized gain/(loss) on swap contracts
Net realized gain/(loss) on U.S. Treasury securities				26,675
Net unrealized gain/(loss) on U.S. Treasury securities				(32,677)
Trading commissions
Change in fair value of investments in unconsolidated trading companies				(353,266)
Net gain/(loss) on investments				1,324,354
NET INCREASE/(DECREASE) IN OWNERS' CAPITAL RESULTING FROM OPERATIONS			(756,267)	938,157
Less: Operations attributable to non-controlling interests
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS			$ (756,267)	$ 938,157
The Series of Frontier Funds [Member] | Frontier Global Fund [Member] | Class 1 [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	$ (17.50)	$ 8.39	$ (27.34)	$ 20.45
The Series of Frontier Funds [Member] | Frontier Global Fund [Member] | Class 2 [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	(24.87)	13.72	(36.60)	34.03
The Series of Frontier Funds [Member] | Frontier Global Fund [Member] | Class 1AP [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	$ (19.96)	$ 11.03	$ (29.04)	$ 27.24
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member]
Investment income:
Interest - net		$ (6)		$ (6)
Total Income/(loss)		(6)		(6)
Expenses:
Incentive Fees
Management Fees				7,289
Service Fees - Class 1	15,845	22,197	51,802	66,095
Trading Fees	25,094	31,932	83,036	88,678
Other Fees
Total Expenses	40,939	54,129	134,838	162,062
Investment income/(loss) - net	(40,939)	(54,135)	(134,838)	(162,068)
Realized and unrealized gain/(loss) on investments:
Net realized gain/(loss) on futures, forwards and options
Net unrealized gain/(loss) on private investment companies	(150,921)	225,227	(75,695)	741,499
Net realized gain/(loss) on private investment companies	(55,592)	(51,997)	(56,727)	(125,925)
Net realized gain/(loss) on swap contracts			(97,745)
Net unrealized gain/(loss) on swap contracts		1,777	197,829	83,006
Net realized gain/(loss) on U.S. Treasury securities	(772)	4,776	9,015	10,916
Net unrealized gain/(loss) on U.S. Treasury securities	(402)	(4,018)	(7,369)	(6,631)
Trading commissions
Change in fair value of investments in unconsolidated trading companies	(1,106)	(1,352)	(7,250)	(65,270)
Net gain/(loss) on investments	(208,793)	174,413	(37,942)	637,595
NET INCREASE/(DECREASE) IN OWNERS' CAPITAL RESULTING FROM OPERATIONS	(249,732)	120,278	(172,780)	475,527
Less: Operations attributable to non-controlling interests		(861)	95,914	40,244
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS	$ (249,732)	$ 121,139	$ (747,719)	$ 435,283
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member] | Class 1 [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	$ (9.63)	$ 3.33	$ (10.65)	$ 13.10
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member] | Class 2 [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	(14.34)	6.52	(13.69)	23.95
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member] | Class 1AP [Member]
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT
NET INCREASE/(DECREASE) IN CAPITAL RESULTING FROM OPERATIONS ATTRIBUTABLE TO CONTROLLING INTERESTS PER UNIT	$ (10.72)	$ 4.82	$ (9.62)	$ 19.38

Statements of Changes in Owners

Statements of Changes in Owners' Capital Equity (Unaudited) - 9 months ended Sep. 30, 2020 - USD ($)	The Series of Frontier Funds [Member]Frontier Diversified Fund [Member]Limited Owners [Member]Class 1 [Member]	The Series of Frontier Funds [Member]Frontier Diversified Fund [Member]Limited Owners [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Diversified Fund [Member]Limited Owners [Member]Class 3 [Member]	The Series of Frontier Funds [Member]Frontier Diversified Fund [Member]Managing Owner [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Diversified Fund [Member]Managing Owner [Member]Class 3 [Member]	The Series of Frontier Funds [Member]Frontier Diversified Fund [Member]Non-Controlling Interests [Member]	The Series of Frontier Funds [Member]Frontier Diversified Fund [Member]Class 1 [Member]	The Series of Frontier Funds [Member]Frontier Diversified Fund [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Diversified Fund [Member]Class 3 [Member]	The Series of Frontier Funds [Member]Frontier Diversified Fund [Member]	The Series of Frontier Funds [Member]Frontier Masters Fund [Member]Limited Owners [Member]Class 1 [Member]	The Series of Frontier Funds [Member]Frontier Masters Fund [Member]Limited Owners [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Masters Fund [Member]Limited Owners [Member]Class 3 [Member]	The Series of Frontier Funds [Member]Frontier Masters Fund [Member]Managing Owner [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Masters Fund [Member]Managing Owner [Member]Class 3 [Member]	The Series of Frontier Funds [Member]Frontier Masters Fund [Member]Non-Controlling Interests [Member]	The Series of Frontier Funds [Member]Frontier Masters Fund [Member]Class 1 [Member]	The Series of Frontier Funds [Member]Frontier Masters Fund [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Masters Fund [Member]Class 3 [Member]	The Series of Frontier Funds [Member]Frontier Masters Fund [Member]	The Series of Frontier Funds [Member]Frontier Long/Short Commodity Fund [Member]Limited Owners [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Long/Short Commodity Fund [Member]Limited Owners [Member]Class 3 [Member]	The Series of Frontier Funds [Member]Frontier Long/Short Commodity Fund [Member]Limited Owners [Member]Class 1a [Member]	The Series of Frontier Funds [Member]Frontier Long/Short Commodity Fund [Member]Limited Owners [Member]Class 2a [Member]	The Series of Frontier Funds [Member]Frontier Long/Short Commodity Fund [Member]Limited Owners [Member]Class 3a [Member]	The Series of Frontier Funds [Member]Frontier Long/Short Commodity Fund [Member]Managing Owner [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Long/Short Commodity Fund [Member]Managing Owner [Member]Class 2a [Member]	The Series of Frontier Funds [Member]Frontier Long/Short Commodity Fund [Member]Managing Owner [Member]Class 3a [Member]	The Series of Frontier Funds [Member]Frontier Long/Short Commodity Fund [Member]Non-Controlling Interests [Member]	The Series of Frontier Funds [Member]Frontier Long/Short Commodity Fund [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Long/Short Commodity Fund [Member]Class 3 [Member]	The Series of Frontier Funds [Member]Frontier Long/Short Commodity Fund [Member]	The Series of Frontier Funds [Member]Frontier Balanced Fund [Member]Limited Owners [Member]Class 1 [Member]	The Series of Frontier Funds [Member]Frontier Balanced Fund [Member]Limited Owners [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Balanced Fund [Member]Limited Owners [Member]Class 2a [Member]	The Series of Frontier Funds [Member]Frontier Balanced Fund [Member]Limited Owners [Member]Class 3a [Member]	The Series of Frontier Funds [Member]Frontier Balanced Fund [Member]Limited Owners [Member]Class 1AP [Member]	The Series of Frontier Funds [Member]Frontier Balanced Fund [Member]Managing Owner [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Balanced Fund [Member]Managing Owner [Member]Class 2a [Member]	The Series of Frontier Funds [Member]Frontier Balanced Fund [Member]Non-Controlling Interests [Member]	The Series of Frontier Funds [Member]Frontier Balanced Fund [Member]Class 1 [Member]	The Series of Frontier Funds [Member]Frontier Balanced Fund [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Balanced Fund [Member]Class 1AP [Member]	The Series of Frontier Funds [Member]Frontier Balanced Fund [Member]	The Series of Frontier Funds [Member]Frontier Select Fund [Member]Limited Owners [Member]Class 1 [Member]	The Series of Frontier Funds [Member]Frontier Select Fund [Member]Limited Owners [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Select Fund [Member]Limited Owners [Member]Class 1AP [Member]	The Series of Frontier Funds [Member]Frontier Select Fund [Member]Managing Owner [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Select Fund [Member]Non-Controlling Interests [Member]	The Series of Frontier Funds [Member]Frontier Select Fund [Member]Class 1 [Member]	The Series of Frontier Funds [Member]Frontier Select Fund [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Select Fund [Member]Class 1AP [Member]	The Series of Frontier Funds [Member]Frontier Select Fund [Member]	The Series of Frontier Funds [Member]Frontier Global Fund [Member]Limited Owners [Member]Class 1 [Member]	The Series of Frontier Funds [Member]Frontier Global Fund [Member]Limited Owners [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Global Fund [Member]Limited Owners [Member]Class 1AP [Member]	The Series of Frontier Funds [Member]Frontier Global Fund [Member]Managing Owner [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Global Fund [Member]Non-Controlling Interests [Member]	The Series of Frontier Funds [Member]Frontier Global Fund [Member]Class 1 [Member]	The Series of Frontier Funds [Member]Frontier Global Fund [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Global Fund [Member]Class 1AP [Member]	The Series of Frontier Funds [Member]Frontier Global Fund [Member]	The Series of Frontier Funds [Member]Frontier Heritage Fund [Member]Limited Owners [Member]Class 1 [Member]	The Series of Frontier Funds [Member]Frontier Heritage Fund [Member]Limited Owners [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Heritage Fund [Member]Limited Owners [Member]Class 1AP [Member]	The Series of Frontier Funds [Member]Frontier Heritage Fund [Member]Managing Owner [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Heritage Fund [Member]Non-Controlling Interests [Member]	The Series of Frontier Funds [Member]Frontier Heritage Fund [Member]Class 1 [Member]	The Series of Frontier Funds [Member]Frontier Heritage Fund [Member]Class 2 [Member]	The Series of Frontier Funds [Member]Frontier Heritage Fund [Member]Class 1AP [Member]	The Series of Frontier Funds [Member]Frontier Heritage Fund [Member]	Frontier Funds [Member]Limited Owners [Member]	Frontier Funds [Member]Managing Owner [Member]	Frontier Funds [Member]
Owners' Capital, Beginning balance at Dec. 31, 2019	$ 1,303,195	$ 5,597,828	$ 4,979,641	$ 3,023	$ 115,933					$ 11,999,620	$ 12,794	$ 837,765	$ 1,365,209	$ 13,043	$ 9,228					$ 2,238,039	$ 36,515	$ 991,828	$ 11,447	$ 73,965	$ 207,151	$ 4,530	$ 7,861	$ 993				$ 1,334,290	$ 17,797,600	$ 3,288,105	$ 44,048	$ 900,583	$ 238,544	$ 73,748	$ 151,133					$ 22,493,761	$ 2,715,051	$ 60,910	$ 10,834	$ 29,831					$ 2,816,626	$ 4,471,980	$ 293,159	$ 33,047	$ 50,058					$ 4,848,244	$ 2,295,623	$ 493,464	$ 8,333	$ 28,593	$ 479,024				$ 3,305,037	$ 48,068,619	$ 487,974	$ 48,556,593
Sale of Units (including transfers)
Redemption of Units (including transfers)		(2,629,631)	(897,767)		(26,100)					(3,553,498)		(141,223)	(315,727)	(3,400)						(460,350)	(7,667)	(53,726)		(1,195)	(4,304)	(600)	2					(67,490)	(2,577,034)	(295,415)		(63,588)			(19,800)					(2,955,837)	(790,915)	(5,198)		(9,000)					(805,113)	(1,009,896)	(119,501)		(12,900)					(1,142,297)	(84,653)	(303,112)		(1,700)					(389,465)	(9,300,545)	(73,500)	(9,374,045)
Payment made by Related Party
Payment made by the Managing Owner
Transfer of Units In(Out)	(987,405)		987,405																				(11,267)		11,267
Net increase/(decrease) in Owners' Capital resulting from operations attributable to controlling interests	(174,700)	(1,247,369)	(1,787,535)	(1,009)	(35,556)					(3,246,169)	(3,590)	(195,888)	(298,987)	(2,942)	(2,490)					(503,897)	(130)	(357)	(180)	(209)	(70)	2	(25)	(1)				(970)	(6,420,418)	(1,190,932)	(16,440)	(329,759)	(89,085)	(27,541)	(54,239)					(8,128,414)	(428,177)	(9,795)	(1,952)	(4,057)					(443,981)	(716,475)	(26,994)	(6,277)	(6,521)					(756,267)	(240,030)	(25,639)	(742)	(2,284)	(479,024)				(747,719)	(13,211,735)	(136,657)	(13,348,392)
Owners' Capital, Ending balance at Sep. 30, 2020	$ 141,090	$ 1,720,828	$ 3,281,744	$ 2,014	$ 54,277					$ 5,199,953	$ 9,205	$ 500,654	$ 750,494	$ 6,702	$ 6,739					$ 1,273,794	$ 28,718	$ 937,745		$ 72,561	$ 214,044	$ 3,932	$ 7,840	$ 992				$ 1,265,832	$ 8,800,149	$ 1,801,758	$ 27,608	$ 507,236	$ 149,459	$ 46,207	$ 77,094					$ 11,409,511	$ 1,495,959	$ 45,917	$ 8,882	$ 16,774					$ 1,567,532	$ 2,745,609	$ 146,664	$ 26,771	$ 30,637					$ 2,949,681	$ 1,970,940	$ 164,713	$ 7,591	$ 24,609					$ 2,167,853	$ 25,556,339	$ 277,817	$ 25,834,156
Owners' Capital - Units, Beginning balance at Dec. 31, 2019	12,890	46,042	43,832	25	1,021		12,890	46,067	44,853		177	9,610	16,693	149	113		177	9,759	16,806		447	11,581	259	1,408	3,745	56	149	18		503	11,581		151,814	17,695	274	5,611	1,731	397	938		151,814	18,092	1,731		40,793	585	138	288		40,793	873	138		34,003	1,520	214	260		34,003	1,780	214		23,536	3,213	73	186		23,536	3,399	73
Owners' Capital - Units, Sale of Units (including transfers)
Owners' Capital - Units, Redemption of Units (including transfers)	(10,768)	(24,798)	(554)		(305)							(1,733)	(4,128)	(44)							(94)	(601)	(259)	(23)	128	(8)	1						(29,284)	(2,219)		(569)			(174)						(12,755)	(46)		(91)						(7,647)	(581)		(64)						(851)	(2,036)		(10)
Owners' Capital - Units, Ending balance at Sep. 30, 2020	2,122	21,244	43,278	25	716		2,122	21,269	43,994		177	7,877	12,565	105	113		177	7,983	12,678		353	10,980		1,385	3,873	48	150	18		401	10,980		122,530	15,476	274	5,042	1,731	397	764		122,530	15,873	1,731		28,038	539	138	197		28,038	736	138		26,356	939	214	196		26,356	1,135	214		22,685	1,177	73	176		22,685	1,353	73
Net asset value per unit, Beginning balance at Dec. 31, 2019	$ 101.10	$ 121.58	$ 113.61								$ 72.28	$ 87.18	$ 81.78								$ 81.6	$ 85.64	$ 44.2	$ 52.55	$ 55.31								$ 117.23	$ 185.82	$ 161.04	$ 160.5	$ 137.81								$ 66.56	$ 103.94	$ 78.51							$ 131.52	$ 192.82	$ 154.43							$ 97.54	$ 153.59	$ 114.15
Change in net asset value per unit	(34.62)	(40.58)	(37.78)								(20.13)	(23.63)	(22.05)								(0.19)	(0.24)	(44.20)	(0.16)	(0.04)								(45.41)	(69.4)	(60.14)	(59.9)	(51.47)								(13.21)	(18.74)	(14.31)							(27.34)	(36.6)	(29.04)							(10.65)	(13.69)	(9.62)
Net asset value per unit, Ending balance at Sep. 30, 2020	$ 66.48	$ 81	$ 75.83								$ 52.15	$ 63.55	$ 59.73								$ 81.41	$ 85.4		$ 52.39	$ 55.27								$ 71.82	$ 116.42	$ 100.9	$ 100.6	$ 86.34								$ 53.35	$ 85.2	$ 64.2							$ 104.18	$ 156.22	$ 125.39							$ 86.88	$ 139.9	$ 104.53

Statements of Cash Flows (Unaud

Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member]
Cash Flows from Operating Activities:
Net increase/(decrease) in capital resulting from operations	$ (3,246,169)	$ 162,808
Change in:
Net change in ownership allocation of U.S. Treasury securities	1,348,473	1,879,602
Net unrealized (gain)/loss on swap contracts	2,099,874	(154,015)
Net unrealized (gain)/loss on U.S. Treasury securities	(27,421)	8,854
Net realized (gain)/loss on U.S. Treasury securities	19,521	(11,466)
Net unrealized (gain)/loss on private investment companies	(372,285)	(1,095,404)
Net realized (gain)/loss on private investment companies	1,295,055	589,985
(Purchases) of swap contracts	(269,146)
Reduction of collateral in Swap contracts		1
Sales of U.S. Treasury securities	461,162	1,531,470
(Purchases) of U.S. Treasury securities	(1,723,974)	(2,046,958)
U.S. Treasury interest and premium paid/amortized	2,006	(5)
(Purchases) of Private Investment Companies	(2,011,773)	(4,768,240)
Sale of Private Investment Companies	5,931,748	6,503,414
Increase and/or decrease in:
Investments in unconsolidated trading companies, at fair value	9,618	1,146,315
Prepaid service fees
Interest receivable	1,895	30,717
Receivable from related parties	(21,575)	(105,149)
Other assets	5,700	(178,138)
Due to broker
Redemptions receivable from private investment companies	60,241
Incentive fees payable to Managing Owner		6,380
Management fees payable to Managing Owner		(3,875)
Trading fees payable to Managing Owner	(19,191)	(4,813)
Service fees payable to Managing Owner	(2,760)	(2,283)
Subscriptions in advance for service fee rebates	119	97,019
Other liabilities	3,054
Net cash provided by (used in) operating activities	3,544,172	3,586,219
Cash Flows from Financing Activities:
Payment for redemption of units	(3,553,498)	(4,029,284)
Change in owner redemptions payable
Net cash provided by (used in) financing activities	(3,553,498)	(4,029,284)
Net increase (decrease) in cash and cash equivalents	(9,326)	(443,065)
Cash and cash equivalents, beginning of period	56,263	472,695
Cash and cash equivalents, end of period	46,937	29,630
The Series of Frontier Funds [Member] | Frontier Masters Fund [Member]
Cash Flows from Operating Activities:
Net increase/(decrease) in capital resulting from operations	(503,897)	(229,483)
Change in:
Net change in ownership allocation of U.S. Treasury securities	(386,057)	667,275
Net unrealized (gain)/loss on swap contracts
Net unrealized (gain)/loss on U.S. Treasury securities	2,674	4,121
Net realized (gain)/loss on U.S. Treasury securities	(6,092)	(10,671)
Net unrealized (gain)/loss on private investment companies	(280,814)	(170,629)
Net realized (gain)/loss on private investment companies	694,341	(147,373)
(Purchases) of swap contracts
Reduction of collateral in Swap contracts
Sales of U.S. Treasury securities	1,199,617	436,661
(Purchases) of U.S. Treasury securities	(780,910)	(1,078,415)
U.S. Treasury interest and premium paid/amortized	2,329	4,371
(Purchases) of Private Investment Companies	(1,149,732)	(1,779,115)
Sale of Private Investment Companies	1,743,952	4,175,445
Increase and/or decrease in:
Investments in unconsolidated trading companies, at fair value	872	765,267
Prepaid service fees
Interest receivable	832	2,266
Receivable from related parties	(23,029)
Due to broker
Redemptions receivable from private investment companies	(44,070)
Incentive fees payable to Managing Owner
Management fees payable to Managing Owner		(8,347)
Trading fees payable to Managing Owner	(4,313)	(11,077)
Service fees payable to Managing Owner	(79)	(1,633)
Subscriptions in advance for service fee rebates	184	3,658
Other liabilities	1,630	381
Net cash provided by (used in) operating activities	467,438	2,622,702
Cash Flows from Financing Activities:
Payment for redemption of units	(460,350)	(2,649,137)
Change in owner redemptions payable
Net cash provided by (used in) financing activities	(460,350)	(2,649,137)
Net increase (decrease) in cash and cash equivalents	7,088	(26,435)
Cash and cash equivalents, beginning of period	25,639	46,374
Cash and cash equivalents, end of period	32,727	19,939
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member]
Cash Flows from Operating Activities:
Net increase/(decrease) in capital resulting from operations	(970)	(259,103)
Change in:
Net change in ownership allocation of U.S. Treasury securities	(286,463)	(369,853)
Net unrealized (gain)/loss on swap contracts	(215,753)	94,964
Net unrealized (gain)/loss on U.S. Treasury securities	1,476	1,996
Net realized (gain)/loss on U.S. Treasury securities	(6,224)	(5,161)
Net unrealized (gain)/loss on private investment companies	(206,081)	(517,511)
Net realized (gain)/loss on private investment companies	394,032	641,976
(Purchases) of swap contracts
Reduction of collateral in Swap contracts
Sales of U.S. Treasury securities	866,588	948,424
(Purchases) of U.S. Treasury securities	(536,710)	(535,065)
U.S. Treasury interest and premium paid/amortized	2,025	1,828
(Purchases) of Private Investment Companies	(173,665)	(1,149,013)
Sale of Private Investment Companies	277,921	1,346,455
Increase and/or decrease in:
Investments in unconsolidated trading companies, at fair value	74	15,966
Prepaid service fees
Interest receivable	1,163	3,086
Receivable from related parties	(33,267)
Due to broker
Redemptions receivable from private investment companies	(1,250)
Incentive fees payable to Managing Owner		60,871
Management fees payable to Managing Owner
Trading fees payable to Managing Owner	(769)	(716)
Service fees payable to Managing Owner		(51)
Subscriptions in advance for service fee rebates	189
Other liabilities	2,409	637
Net cash provided by (used in) operating activities	84,769	279,693
Cash Flows from Financing Activities:
Payment for redemption of units	(67,488)	(316,532)
Change in owner redemptions payable	(4,276)
Net cash provided by (used in) financing activities	(71,764)	(316,532)
Net increase (decrease) in cash and cash equivalents	13,005	(36,839)
Cash and cash equivalents, beginning of period	34,272	61,600
Cash and cash equivalents, end of period	47,277	24,761
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member]
Cash Flows from Operating Activities:
Net increase/(decrease) in capital resulting from operations	(8,128,414)	(163,811)
Change in:
Net change in open trade equity, at fair value	175,959	195,475
Net change in ownership allocation of U.S. Treasury securities	179,457	1,479,242
Net unrealized (gain)/loss on swap contracts	5,804,030	(354,147)
Net unrealized (gain)/loss on U.S. Treasury securities	5,409	426
Net realized (gain)/loss on U.S. Treasury securities	(28,151)	(12,092)
Net unrealized (gain)/loss on private investment companies	325,724	(1,703,296)
Net realized (gain)/loss on private investment companies	1,666,467	787,630
Sales of U.S. Treasury securities	3,616,957	972,761
(Purchases) of U.S. Treasury securities	(3,570,232)	(2,671,069)
U.S. Treasury interest and premium paid/amortized	6,361	36,502
(Purchases) of Private Investment Companies	(4,464,511)	(8,141,550)
Sale of Private Investment Companies	6,308,097	16,823,824
Increase and/or decrease in:
Receivable from futures commission merchants	1,745,358	(177,958)
Investments in unconsolidated trading companies, at fair value	50,867	1,720,824
Interest receivable	4,270	391
Receivable from related parties
Other assets		(380,111)
Redemptions receivable from private investment companies	184,180
Management fees payable to Managing Owner	108	(5,248)
Interest payable to Managing Owner	256	(1,244)
Trading fees payable to Managing Owner	(28,699)	(25,253)
Service fees payable to Managing Owner	(21,057)	(14,538)
Risk analysis fees payable	1,564	302
Payables to related parties	175,803
Subscriptions in advance for service fee rebates	21,905	50,347
Other liabilities	(1,819)	1,019
Net cash provided by (used in) operating activities	2,851,192	8,418,426
Cash Flows from Financing Activities:
Payment for redemption of units	(2,955,837)	(8,399,715)
Change in owner redemptions payable	(13,861)	(7,187)
Net cash provided by (used in) financing activities	(2,969,698)	(8,406,902)
Net increase (decrease) in cash and cash equivalents	(118,506)	11,524
Cash and cash equivalents, beginning of period	118,506	37,556
Cash and cash equivalents, end of period		49,080
The Series of Frontier Funds [Member] | Frontier Select Fund [Member]
Cash Flows from Operating Activities:
Net increase/(decrease) in capital resulting from operations	(443,981)	316,406
Change in:
Net change in open trade equity, at fair value
Net change in ownership allocation of U.S. Treasury securities	(218,192)	(914,443)
Net unrealized (gain)/loss on swap contracts
Net unrealized (gain)/loss on U.S. Treasury securities	3,372	14,497
Net realized (gain)/loss on U.S. Treasury securities	(3,374)	(18,138)
Net unrealized (gain)/loss on private investment companies	49,653	(284,633)
Net realized (gain)/loss on private investment companies	285,836	(138,172)
Sales of U.S. Treasury securities	1,721,835	1,906,054
(Purchases) of U.S. Treasury securities	(1,401,667)	(1,332,376)
U.S. Treasury interest and premium paid/amortized		(5)
(Purchases) of Private Investment Companies	(1,911,902)	(1,071,749)
Sale of Private Investment Companies	2,323,820	2,167,428
Increase and/or decrease in:
Receivable from futures commission merchants
Investments in unconsolidated trading companies, at fair value	500,499	(61,265)
Interest receivable	2,224	(1,195)
Receivable from related parties	(11,037)
Other assets
Redemptions receivable from private investment companies	(128,396)
Management fees payable to Managing Owner
Interest payable to Managing Owner	458	282
Trading fees payable to Managing Owner	(1,912)	(369)
Service fees payable to Managing Owner	(3,205)	(188)
Risk analysis fees payable
Payables to related parties
Subscriptions in advance for service fee rebates	2,115	4,560
Other liabilities	(7,486)	8,572
Net cash provided by (used in) operating activities	758,660	595,266
Cash Flows from Financing Activities:
Payment for redemption of units	(805,113)	(554,391)
Change in owner redemptions payable	793
Net cash provided by (used in) financing activities	(804,320)	(554,391)
Net increase (decrease) in cash and cash equivalents	(45,660)	40,875
Cash and cash equivalents, beginning of period	61,345	25,072
Cash and cash equivalents, end of period	15,685	65,947
The Series of Frontier Funds [Member] | Frontier Global Fund [Member]
Cash Flows from Operating Activities:
Net increase/(decrease) in capital resulting from operations	(756,267)	938,157
Change in:
Net change in open trade equity, at fair value
Net change in ownership allocation of U.S. Treasury securities	(572,676)	(2,136,419)
Net unrealized (gain)/loss on swap contracts
Net realized gain/(loss) on swap contracts
Net unrealized (gain)/loss on U.S. Treasury securities	3,645	32,677
Net realized (gain)/loss on U.S. Treasury securities	(11,338)	(26,675)
Net unrealized (gain)/loss on private investment companies	970,042	(1,963,540)
Net realized (gain)/loss on private investment companies	(448,127)	279,918
Sales of swap contracts
Reduction of collateral in Swap contracts
Sales of U.S. Treasury securities	1,191,317	8,578,317
(Purchases) of U.S. Treasury securities	(580,333)	(3,455,520)
U.S. Treasury interest and premium paid/amortized		(2)
(Purchases) of Private Investment Companies	(463,750)	(4,884,833)
Sale of Private Investment Companies	1,924,065	373,200
Increase and/or decrease in:
Investments in unconsolidated trading companies, at fair value	(1,461)	4,281,863
Interest receivable	871	63,537
Receivable from related parties	(30,180)
Advance on unrealized Swap Appreciation
Redemptions receivable from private investment companies
Management fees payable to Managing Owner		(42,705)
Interest payable to Managing Owner	174	(7,846)
Trading fees payable to Managing Owner	(9,477)	5,614
Service fees payable to Managing Owner	(4,494)	(4,300)
Payables to related parties
Subscriptions in advance for service fee rebates	3,718	14,866
Other liabilities	(5,750)	8,402
Net cash provided by (used in) operating activities	1,209,979	2,054,711
Cash Flows from Financing Activities:
Payment for redemption of units	(1,142,297)	(2,985,464)
Change in non-controlling interest
Change in owner redemptions payable	(52,324)
Net cash provided by (used in) financing activities	(1,194,621)	(2,985,464)
Net increase (decrease) in cash and cash equivalents	15,358	(930,753)
Cash and cash equivalents, beginning of period	27,532	951,485
Cash and cash equivalents, end of period	42,890	20,732
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member]
Cash Flows from Operating Activities:
Net increase/(decrease) in capital resulting from operations	(172,780)	475,527
Change in:
Net change in open trade equity, at fair value
Net change in ownership allocation of U.S. Treasury securities	(75,421)	(604,742)
Net unrealized (gain)/loss on swap contracts	(197,829)	(83,006)
Net realized gain/(loss) on swap contracts	97,745
Net unrealized (gain)/loss on U.S. Treasury securities	7,369	6,631
Net realized (gain)/loss on U.S. Treasury securities	(9,015)	(10,916)
Net unrealized (gain)/loss on private investment companies	75,695	(741,499)
Net realized (gain)/loss on private investment companies	56,727	125,925
Sales of swap contracts	1,491,965
Reduction of collateral in Swap contracts	1,496,127
Sales of U.S. Treasury securities	932,192	1,980,729
(Purchases) of U.S. Treasury securities	(804,397)	(1,446,573)
U.S. Treasury interest and premium paid/amortized		(6)
(Purchases) of Private Investment Companies	(941,369)	(750,704)
Sale of Private Investment Companies	979,165	1,293,592
Increase and/or decrease in:
Investments in unconsolidated trading companies, at fair value	(1,025)	687,202
Interest receivable	1,405	5,634
Receivable from related parties	(45,263)
Advance on unrealized Swap Appreciation	(1,900,000)
Redemptions receivable from private investment companies
Management fees payable to Managing Owner		(9,201)
Interest payable to Managing Owner	160	(764)
Trading fees payable to Managing Owner	(3,602)	2,200
Service fees payable to Managing Owner	(818)	(350)
Payables to related parties
Subscriptions in advance for service fee rebates	4,721	9,185
Other liabilities	2,701	2,165
Net cash provided by (used in) operating activities	898,539	941,725
Cash Flows from Financing Activities:
Payment for redemption of units	(389,465)	(1,003,869)
Change in non-controlling interest	(479,024)
Change in owner redemptions payable	(9,735)	7,210
Net cash provided by (used in) financing activities	(878,224)	(996,659)
Net increase (decrease) in cash and cash equivalents	20,315	(54,934)
Cash and cash equivalents, beginning of period	44,011	135,096
Cash and cash equivalents, end of period	64,326	80,162
Frontier Funds [Member]
Cash Flows from Operating Activities:
Net increase/(decrease) in capital resulting from operations	(13,348,392)	1,200,257
Change in:
Net change in open trade equity, at fair value	175,959	(423,373)
Net unrealized (gain)/loss on swap contracts	7,490,322	(496,204)
Net realized gain/(loss) on swap contracts	97,745
Net unrealized (gain)/loss on U.S. Treasury securities	(3,476)	69,202
Net realized (gain)/loss on U.S. Treasury securities	(44,673)	(95,119)
Net unrealized (gain)/loss on private investment companies	615,670	(5,748,034)
Net realized (gain)/loss on private investment companies	3,962,286	1,795,246
(Purchases) of swap contracts	(1,447,843)
Sales of swap contracts	1,491,965
Reduction of collateral in Swap contracts	1,496,127
Sales of U.S. Treasury securities	9,989,663	16,354,416
(Purchases) of U.S. Treasury securities	(9,398,221)	(12,565,977)
U.S. Treasury interest and premium paid/amortized	12,721	43,347
(Purchases) of Private Investment Companies	(11,118,853)	(23,911,368)
Sale of Private Investment Companies	19,488,768	34,330,833
Increase and/or decrease in:
Receivable from futures commission merchants	1,745,358	8,394,591
Interest receivable	12,660	104,436
Receivable from related parties	(164,351)	(11,453)
Advance on unrealized Swap Appreciation	(1,900,000)
Other assets	5,700	(558,247)
Redemptions receivable from private investment companies	70,705
Incentive fees payable to Managing Owner		67,948
Management fees payable to Managing Owner, net of change in receivable	108	(69,376)
Interest payable to Managing Owner	1,092	(9,609)
Trading fees payable to Managing Owner	(67,963)	(34,414)
Service fees payable to Managing Owner	(32,413)	(23,343)
Due to Managing Owner		(93,696)
Risk analysis fees payable	1,564	(18,133)
Payables to related parties	175,803
Subscriptions in advance for service fee rebates	32,951	179,798
Other liabilities	(5,260)	17,010
Net cash provided by (used in) operating activities	9,335,722	18,498,739
Cash Flows from Financing Activities:
Payment for redemption of capital	(9,374,045)	(19,938,390)
Redemptions payable	(79,403)	23
Net cash provided by (used in) financing activities	(9,453,448)	(19,938,367)
Net increase (decrease) in cash and cash equivalents	(117,726)	(1,439,628)
Cash and cash equivalents, beginning of period	367,568	1,729,879
Cash and cash equivalents, end of period	$ 249,842	$ 290,251

Organization and Purpose

Organization and Purpose	9 Months Ended
	Sep. 30, 2020
The Series of Frontier Funds [Member]
Organization and Purpose	1. Organization and Purpose Frontier Funds, which is referred to in this report as the "Trust", was formed on August 8, 2003, as a Delaware statutory trust. Please refer to the consolidated financial statements of the Trust included within this periodic report. The Trust is a multi-advisor commodity pool, as described in Commodity Futures Trading Commission ("CFTC") Regulation § 4.10(d)(2). The Trust has authority to issue separate series, or each, a Series, of units of beneficial interest (the "Units") pursuant to the requirements of the Delaware Statutory Trust Act, as amended (the "Trust Act"). The assets of each Series are valued and accounted for separately from the assets of other Series. The Trust is not registered as an investment company under the Investment Company Act of 1940, as amended (the "Investment Company Act"). It is managed by Frontier Fund Management LLC (the "Managing Owner"). Purchasers of Units are limited owners of the Trust ("Limited Owners") with respect to beneficial interests of the Series' Units purchased. The Trust Act provides that, except as otherwise provided in the second amended and restated declaration of trust and trust agreement dated December 9, 2013, as further amended, by and among the Managing Owner, Wilmington Trust Company as trustee and the unitholders, as may be amended from time to time ("Trust Agreement"), unitholders of the Trust will have the same limitation of liability as do stockholders of private corporations organized under the General Corporation Law of the State of Delaware. The Trust Agreement confers substantially the same limited liability, and contains the same limited exceptions thereto, as would a limited partnership agreement for a Delaware limited partnership engaged in like transactions as the Trust. In addition, pursuant to the Trust Agreement, the Managing Owner of the Trust is liable for obligations of a Series in excess of that Series' assets. Limited Owners do not have any such liability. The Managing Owner will make contributions to the Series of the Trust necessary to maintain at least a 1% interest in the aggregate capital, profits and losses of the combined Series of the Trust. The Trust has been organized to pool investor funds for the purpose of trading in the United States ("U.S.") and international markets for currencies, interest rates, stock indices, agricultural and energy products, precious and base metals and other commodities. The Trust may also engage in futures contracts, forwards, option contracts and other interest in derivative instruments, including swap contracts. The Trust has seven (7) separate and distinct Series of Units issued and outstanding: Frontier Diversified Fund, Frontier Masters Fund, Frontier Long/Short Commodity Fund, Frontier Balanced Fund, Frontier Select Fund, Frontier Global Fund, and Frontier Heritage Fund, (each a "Series" and collectively, the "Series"). The Trust, with respect to the Series, may issue additional Series of Units. The Trust, with respect to each Series: ● engages in the speculative trading of a diversified portfolio of futures, forwards (including interbank foreign currencies), options contracts and other derivative instruments (including swap contracts), and may, from time to time, engage in cash and spot transactions; ● allocates funds to a limited liability trading company or companies ("Trading Company" or "Trading Companies") and Galaxy Plus (as defined below) entities. Except as otherwise described in these notes, each Trading Company and Galaxy Plus entity has one-year renewable contracts with its own independent commodity trading advisor (s), or each, a Trading Advisor, that will manage all or a portion of such Trading Company's and Galaxy Plus entity's assets and make the trading decisions for the assets of each Series invested in such Trading Company and Galaxy Plus entity. Each Trading Company and Galaxy Plus entity will segregate its assets from any other Trading Company and Galaxy Plus entity; ● maintains separate, distinct records for each Series, and accounts for the assets of each Series separately from the other Series; ● calculates the Net Asset Value ("NAV") of its Units for each Series separately from the other Series; ● has an investment objective of increasing the value of each Series' Units over the long term (capital appreciation), while managing risk and volatility; further, to offer exposure to the investment programs of individual Trading Advisors and to specific instruments; ● maintains each Series of Units in three to seven sub-classes—Class 1, Class 1AP, Class 1a, Class 2, Class 2a, Class 3, and Class 3a. Investors who have purchased Class 1 or Class 1a Units of Frontier Diversified Fund, Frontier Masters Fund, and Frontier Long/Short Commodity Fund are charged a service fee of up to two percent (2.0%) annually of the NAV (of the purchase price, in case of the initial service fee) of each Unit purchased, for the benefit of selling agents selling such Class 1 or Class 1a Units. The initial service fee, which is amortized monthly at an annual rate of up to two percent (2.0%) of the average daily NAV of Class 1 or Class 1a of such Series, is prepaid to the Managing Owner by each Series, and paid to the selling agents by the Managing Owner in the month following sale; provided, however, that investors who redeem all or a portion of their Class 1 or Class 1a Units of any Series during the first twelve (12) months following the effective date of their purchase are subject to a redemption fee of up to two percent (2.0%) of the purchase price at which such investor redeemed to reimburse the Managing Owner for the then-unamortized balance of the prepaid initial service fee. Investors who have purchased Class 1 or Class 1a Units of Frontier Balanced Fund, Frontier Heritage Fund, Frontier Select Fund, and Frontier Global Fund are charged a service fee of up to three percent (3.0%) annually of the NAV (of the purchase price, in case of the initial service fee) of each Unit purchased, for the benefit of selling agents selling such Class 1 or Class 1a Units. The initial service fee, which is amortized monthly at an annual rate of up to three percent (3.0%) of the average daily NAV of Class 1 or Class 1a of such Series, is prepaid to the Managing Owner by each Series, and paid to the selling agents by the Managing Owner in the month following sale. With respect to Class 2 and Class 2a Units of any Series, the Managing Owner pays an ongoing service fee to selling agents of up to one half percent (0.5%) annually of the NAV of each Class 2 or Class 2a Unit (of which 0.25% will be charged to Limited Owners holding Class 2 Units of the Frontier Diversified Fund, and Frontier Masters Fund or Class 2a Units of the Frontier Long/Short Commodity Fund sold until such Class 2 or Class 2a Units which are subject to the fee limitation are reclassified as Class 3 or Class 3a Units of the applicable Series. Class 1AP was created as a sub-class of Class 1 and it has been presented separately because the fees applicable to it are different from those applicable to Class 1. Currently the service fee is not charged to Class 1AP investors. The Managing Owner may also pay selling agents certain additional fees and expenses for administrative and other services rendered and expenses incurred by such selling agents; and ● all payments made to selling agents who are members of the Financial Industry Regulatory Authority, Inc. ("FINRA") and their associated persons that constitute underwriting compensation will be subject to the limitations set forth in Rule 2310(b)(4)(B)(ii) (formerly Rule 2810(b)(4)(B)(ii)) of the Conduct Rules of FINRA ("Rule 2310"). An investor's Class 1 Units or Class 2 Units of any Series, or Class 1a Units or Class 2a Units of the Frontier Long/Short Commodity Fund or Frontier Balanced Fund will be classified as Class 3 or Class 3a Units of such Series, as applicable, when the Managing Owner determines that the fee limitation set forth in Rule 2310 with respect to such Units has been reached or will be reached. The service fee limit applicable to each unit sold is reached upon the earlier of when (i) the aggregate initial and ongoing service fees received by the selling agent with respect to such unit equals 9% of the purchase price of such unit or (ii) the aggregate underwriting compensation (determined in accordance with FINRA Rule 2310) paid in respect of such unit totals 10% of the purchase price of such unit. No service fees are paid with respect to Class 3 or Class 3a Units. Units of any Class in a Series may be redeemed, in whole or in part, on a daily basis, at the then current NAV per Unit for such Series on the day of the week after the date the Managing Owner is in receipt of a redemption request for at least one (1) business day to be received by the Managing Owner prior to 4:00 PM in New York. The assets of any particular Series include only those funds and other assets that are paid to, held by or distributed to the Trust, with respect to the Series, on account of and for the benefit of that Series. Under the "Inter-Series Limitation on Liability" expressly provided for under Section 3804(a) of the Trust Act, separate and distinct records of the cash and equivalents, although pooled for maximizing returns, are maintained in the books and records of each Series. As of September 30, 2020, the Trust, with respect to the Frontier Diversified Fund and Frontier Masters Fund, separates Units into three separate Classes—Class 1, Class 2, and Class 3. The Trust, with respect to the Frontier Select Fund, Frontier Global Fund and Frontier Heritage Fund, separates Units into a maximum of three separate Classes- Class 1, Class 2 and Class 1AP. The Trust, with respect to the Frontier Balanced Fund, separates Units into a maximum of five separate Classes— Class 1, Class 1AP, Class 2, Class 2A and Class 3A. The Trust, with respect to the Frontier Long/Short Commodity Fund, separates Units into a maximum of five separate Classes— Class 1A, Class 2A, Class 2, Class 3A and Class 3. Between April 15, 2016 and May 10, 2017, a portion of the interests in Frontier Trading Company I, LLC and all of the interests in Frontier Trading Company VII, LLC, Frontier Trading Company XV, LLC, and Frontier Trading Company XXIII LLC held by Frontier Diversified Fund, Frontier Masters Fund, Frontier Select Fund, Frontier Balanced Fund and Frontier Long/Short Commodity Fund were exchanged for equivalent interests in the Galaxy Plus Managed Account Platform ("Galaxy Plus") which is an unaffiliated, third-party managed account platform. The assets of Frontier Trading Company I, LLC, which included exposure to Quantmetrics Capital Management LLP's Multi-Strategy Program, Quantitative Investment Management, LLC's Quantitative Global Program, Quest Partners LLC's Quest Tracker Index Program, Chesapeake Capital Management, LLC's Diversified Program, and Doherty Advisors LLC's Relative Value Moderate Program, the assets of Frontier Trading Company VII, LLC, which included exposure to Emil van Essen LLC's Multi-Strategy Program, Red Oak Commodity Advisors, Inc.'s Fundamental Diversified Program, Rosetta Capital Management, LLC's Rosetta Trading Program, and Landmark Trading Company's Landmark Program, the assets of Frontier Trading Company XV, LLC, which included exposure to Transtrend B.V.'s TT Enhanced Risk (USD) Program, and the assets of Frontier Trading Company XXIII, LLC which included exposure to Fort L.P.'s Global Contrarian Program have been transferred to individual Delaware limited liability companies ("Master Funds") in Galaxy Plus. Each Master Fund is sponsored and operated by Gemini Alternative Funds, LLC ("Sponsor"). The Sponsor has contracted with the Trading Advisors to manage the portfolios of the Master Funds pursuant to the advisors' respective program. For those Series that invest in Galaxy Plus entities, approximately 30-70% of those Series assets are used to support the margin requirements of the Master Funds. The remaining assets of the Series are split between investments in Trading Companies and a pooled cash management account that invests primarily in U.S. Treasury securities. For those Series that do not invest in Galaxy Plus entities, their assets are split between investments in Trading Companies and investments in the pooled cash management account. Each of the Series has invested a portion of its assets in several different Trading Companies or Galaxy Plus entities and one or more Trading Advisors may manage the assets invested in such Trading Companies or Galaxy Plus entities. The Trust has entered into agreements, which provide for the indemnification of futures clearing brokers, currency trading companies, and commodity trading advisers, among others, against losses, costs, claims and liabilities arising from the performance of their individual obligations under such agreements, except for gross negligence, bad faith or willful misconduct.
Frontier Funds [Member]
Organization and Purpose	1. Organization and Purpose Frontier Funds, which is referred to in this report as the "Trust", was formed on August 8, 2003, as a Delaware statutory trust. Please refer to the consolidated financial statements of the Trust included within this periodic report. The Trust is a multi-advisor commodity pool, as described in Commodity Futures Trading Commission ("CFTC") Regulation § 4.10(d)(2). The Trust has authority to issue separate series, or each, a Series, of units of beneficial interest (the "Units") pursuant to the requirements of the Delaware Statutory Trust Act, as amended (the "Trust Act"). The assets of each Series are valued and accounted for separately from the assets of other Series. The Trust is not registered as an investment company under the Investment Company Act of 1940, as amended (the "Investment Company Act"). It is managed by Frontier Fund Management LLC (the "Managing Owner"). Purchasers of Units are limited owners of the Trust ("Limited Owners") with respect to beneficial interests of the Series' Units purchased. The Trust Act provides that, except as otherwise provided in the second amended and restated declaration of trust and trust agreement dated December 9, 2013, as further amended, by and among the Managing Owner, Wilmington Trust Company as trustee and the unitholders, as may be amended from time to time ("Trust Agreement"), unitholders of the Trust will have the same limitation of liability as do stockholders of private corporations organized under the General Corporation Law of the State of Delaware. The Trust Agreement confers substantially the same limited liability, and contains the same limited exceptions thereto, as would a limited partnership agreement for a Delaware limited partnership engaged in like transactions as the Trust. In addition, pursuant to the Trust Agreement, the Managing Owner of the Trust is liable for obligations of a Series in excess of that Series' assets. Limited Owners do not have any such liability. The Managing Owner will make contributions to the Series of the Trust necessary to maintain at least a 1% interest in the aggregate capital, profits and losses of the combined Series of the Trust. The Trust has been organized to pool investor funds for the purpose of trading in the United States ("U.S.") and international markets for currencies, interest rates, stock indices, agricultural and energy products, precious and base metals and other commodities. The Trust may also engage in futures contracts, forwards, option contracts and other interest in derivative instruments, including swap contracts. The Trust has seven (7) separate and distinct Series of Units issued and outstanding: Frontier Diversified Fund, Frontier Masters Fund, Frontier Long/Short Commodity Fund, Frontier Balanced Fund, Frontier Select Fund, Frontier Global Fund, and Frontier Heritage Fund, (each a "Series" and collectively, the "Series"). The Trust, with respect to the Series, may issue additional Series of Units. The Trust, with respect to each Series: ● engages in the speculative trading of a diversified portfolio of futures, forwards (including interbank foreign currencies), options contracts and other derivative instruments (including swap contracts), and may, from time to time, engage in cash and spot transactions; ● allocates funds to a limited liability trading company or companies ("Trading Company" or "Trading Companies") and Galaxy Plus (as defined below) entities. Except as otherwise described in these notes, each Trading Company and Galaxy Plus entity has one-year renewable contracts with its own independent commodity trading advisor (s), or each, a Trading Advisor, that will manage all or a portion of such Trading Company's and Galaxy Plus entity's assets and make the trading decisions for the assets of each Series invested in such Trading Company and Galaxy Plus entity. Each Trading Company and Galaxy Plus entity will segregate its assets from any other Trading Company and Galaxy Plus entity; ● maintains separate, distinct records for each Series, and accounts for the assets of each Series separately from the other Series; ● calculates the Net Asset Value ("NAV") of its Units for each Series separately from the other Series; ● has an investment objective of increasing the value of each Series' Units over the long term (capital appreciation), while managing risk and volatility; further, to offer exposure to the investment programs of individual Trading Advisors and to specific instruments; ● maintains each Series of Units in three to seven sub-classes—Class 1, Class 1AP, Class 1a, Class 2, Class 2a, Class 3, and Class 3a. Investors who have purchased Class 1 or Class 1a Units of Frontier Diversified Fund, Frontier Masters Fund, and Frontier Long/Short Commodity Fund are charged a service fee of up to two percent (2.0%) annually of the NAV (of the purchase price, in case of the initial service fee) of each Unit purchased, for the benefit of selling agents selling such Class 1 or Class 1a Units. The initial service fee, which is amortized monthly at an annual rate of up to two percent (2.0%) of the average daily NAV of Class 1 or Class 1a of such Series, is prepaid to the Managing Owner by each Series, and paid to the selling agents by the Managing Owner in the month following sale; provided, however, that investors who redeem all or a portion of their Class 1 or Class 1a Units of any Series during the first twelve (12) months following the effective date of their purchase are subject to a redemption fee of up to two percent (2.0%) of the purchase price at which such investor redeemed to reimburse the Managing Owner for the then-unamortized balance of the prepaid initial service fee. Investors who have purchased Class 1 or Class 1a Units of Frontier Balanced Fund, Frontier Heritage Fund, Frontier Select Fund, and Frontier Global Fund are charged a service fee of up to three percent (3.0%) annually of the NAV (of the purchase price, in case of the initial service fee) of each Unit purchased, for the benefit of selling agents selling such Class 1 or Class 1a Units. The initial service fee, which is amortized monthly at an annual rate of up to three percent (3.0%) of the average daily NAV of Class 1 or Class 1a of such Series, is prepaid to the Managing Owner by each Series, and paid to the selling agents by the Managing Owner in the month following sale. With respect to Class 2 and Class 2a Units of any Series, the Managing Owner pays an ongoing service fee to selling agents of up to one half percent (0.5%) annually of the NAV of each Class 2 or Class 2a Unit (of which 0.25% will be charged to Limited Owners holding Class 2 Units of the Frontier Diversified Fund, and Frontier Masters Fund or Class 2a Units of the Frontier Long/Short Commodity Fund sold until such Class 2 or Class 2a Units which are subject to the fee limitation are reclassified as Class 3 or Class 3a Units of the applicable Series. Class 1AP was created as a sub-class of Class 1 and it has been presented separately because the fees applicable to it are different from those applicable to Class 1. Currently the service fee is not charged to Class 1AP investors. The Managing Owner may also pay selling agents certain additional fees and expenses for administrative and other services rendered and expenses incurred by such selling agents; and ● all payments made to selling agents who are members of the Financial Industry Regulatory Authority, Inc. ("FINRA") and their associated persons that constitute underwriting compensation will be subject to the limitations set forth in Rule 2310(b)(4)(B)(ii) (formerly Rule 2810(b)(4)(B)(ii)) of the Conduct Rules of FINRA ("Rule 2310"). An investor's Class 1 Units or Class 2 Units of any Series, or Class 1a Units or Class 2a Units of the Frontier Long/Short Commodity Fund or Frontier Balanced Fund will be classified as Class 3 or Class 3a Units of such Series, as applicable, when the Managing Owner determines that the fee limitation set forth in Rule 2310 with respect to such Units has been reached or will be reached. The service fee limit applicable to each unit sold is reached upon the earlier of when (i) the aggregate initial and ongoing service fees received by the selling agent with respect to such unit equals 9% of the purchase price of such unit or (ii) the aggregate underwriting compensation (determined in accordance with FINRA Rule 2310) paid in respect of such unit totals 10% of the purchase price of such unit. No service fees are paid with respect to Class 3 or Class 3a Units. Units of any Class in a Series may be redeemed, in whole or in part, on a daily basis, at the then current NAV per Unit for such Series on the day of the week after the date the Managing Owner is in receipt of a redemption request for at least one (1) business day to be received by the Managing Owner prior to 4:00 PM in New York. The assets of any particular Series include only those funds and other assets that are paid to, held by or distributed to the Trust, with respect to the Series, on account of and for the benefit of that Series. Under the "Inter-Series Limitation on Liability" expressly provided for under Section 3804(a) of the Trust Act, separate and distinct records of the cash and equivalents, although pooled for maximizing returns, are maintained in the books and records of each Series. As of September 30, 2020, the Trust, with respect to the Frontier Diversified Fund and Frontier Masters Fund, separates Units into three separate Classes—Class 1, Class 2, and Class 3. The Trust, with respect to the Frontier Select Fund, Frontier Global Fund and Frontier Heritage Fund, separates Units into a maximum of three separate Classes—Class 1, Class 2 and Class 1AP. The Trust, with respect to the Frontier Balanced Fund, separates Units into a maximum of five separate Classes—Class 1, Class 1AP, Class 2, Class 2A and Class 3A. The Trust, with respect to the Frontier Long/Short Commodity Fund, separates Units into a maximum of five separate Classes— Class 1A, Class 2A, Class 2, Class 3A and Class 3. Between April 15, 2016 and May 10, 2017, a portion of the interests in Frontier Trading Company I, LLC and all of the interests in Frontier Trading Company VII, LLC, Frontier Trading Company XV, LLC, and Frontier Trading Company XXIII LLC held by Frontier Diversified Fund, Frontier Masters Fund, Frontier Select Fund, Frontier Balanced Fund and Frontier Long/Short Commodity Fund were exchanged for equivalent interests in the Galaxy Plus Managed Account Platform ("Galaxy Plus") which is an unaffiliated, third-party managed account platform. The assets of Frontier Trading Company I, LLC, which included exposure to Quantmetrics Capital Management LLP's Multi-Strategy Program, Quantitative Investment Management, LLC's Quantitative Global Program, Quest Partners LLC's Quest Tracker Index Program, Chesapeake Capital Management, LLC's Diversified Program, and Doherty Advisors LLC's Relative Value Moderate Program, the assets of Frontier Trading Company VII, LLC, which included exposure to Emil van Essen LLC's Multi-Strategy Program, Red Oak Commodity Advisors, Inc.'s Fundamental Diversified Program, Rosetta Capital Management, LLC's Rosetta Trading Program, and Landmark Trading Company's Landmark Program, the assets of Frontier Trading Company XV, LLC, which included exposure to Transtrend B.V.'s TT Enhanced Risk (USD) Program, and the assets of Frontier Trading Company XXIII, LLC which included exposure to Fort L.P.'s Global Contrarian Program have been transferred to individual Delaware limited liability companies ("Master Funds") in Galaxy Plus. Each Master Fund is sponsored and operated by Gemini Alternative Funds, LLC ("Sponsor"). The Sponsor has contracted with the Trading Advisors to manage the portfolios of the Master Funds pursuant to the advisors' respective program. For those Series that invest in Galaxy Plus entities, approximately 30-70% of those Series assets are used to support the margin requirements of the Master Funds. The remaining assets of the Series are split between investments in Trading Companies and a pooled cash management account that invests primarily in U.S. Treasury securities. For those Series that do not invest in Galaxy Plus entities, their assets are split between investments in Trading Companies and investments in the pooled cash management account. Each of the Series has invested a portion of its assets in several different Trading Companies or Galaxy Plus entities and one or more Trading Advisors may manage the assets invested in such Trading Companies or Galaxy Plus entities. The Trust has entered into agreements, which provide for the indemnification of futures clearing brokers, currency trading companies, and commodity trading advisers, among others, against losses, costs, claims and liabilities arising from the performance of their individual obligations under such agreements, except for gross negligence, bad faith or willful misconduct.

Significant Accounting Policies

Significant Accounting Policies	9 Months Ended
	Sep. 30, 2020
The Series of Frontier Funds [Member]
Significant Accounting Policies	2. Significant Accounting Policies The following are the significant accounting policies of the Series of the Trust. Basis of Presentation Consolidation Galaxy Plus entities are co-mingled investment vehicles. In addition to the Series, there are other non-affiliated investors in Galaxy Plus entities. Subscriptions and redemptions by these non-affiliated investors will have a direct impact on the Series' ownership percentage in Galaxy Plus entities. It is expected that ownership percentage will fluctuate (sometimes significantly) on a week by week basis which could also result in frequent changes in the consolidating Series. Such fluctuations make consolidating the financial statements of the Galaxy Plus entities both impractical and misleading. Non-consolidation of these Galaxy Plus entities presents a more useful financial statement for the readers. As such, management has decided that presenting Galaxy Plus entities on a non-consolidated basis as investments in other investments companies (a "fund of funds" approach) is appropriate and preferable to the users of these financial statements. Refer to Note 5 for additional disclosures related to these private investment companies. Change in Consolidation Method Use of Estimates— Cash and Cash Equivalents— Interest Income— U.S. Treasury Securities— Fair Value Measurements and Disclosures (" Receivable From Futures Commission Merchants Investment Transactions— Balance Sheet ("ASC 210" Balance Sheet (Topic 210 Any change in net unrealized gain or loss from the preceding period is reported in the statements of operations. Fair value of exchange-traded contracts is based upon exchange settlement prices. Fair value of non-exchange-traded contracts is based on third-party quoted dealer values on the interbank market. For U.S. Treasury securities, interest is recognized in the period earned and the instruments are marked-to-market daily based on third-party information. Transaction costs are recognized as incurred and reflected separately in the statements of operations. Purchase and Sales of Private Investment Companies Foreign Currency Transactions— Allocation of Earnings— Each Series allocates funds to an affiliated Trading Company, or Companies, of the Trust or unaffiliated Galaxy Plus entity. Each Trading Company allocates all of its daily trading gains or losses to the Series in proportion to each Series' ownership trading level interest in the Trading Company, adjusted on a daily basis (except for Trading Advisors and other investments such as swaps that are directly allocated to a specific Series). Likewise, trading gains and losses earned and incurred by the Series through their investments in Galaxy Plus entities are allocated to those Series on a daily basis. The allocation of gains and losses in Galaxy Plus entities are based on each Series pro-rata shares of the trading level of that entity which is updated at the beginning of each month or more frequently if there is a subscription or redemption activity in the entity. The value of all open contracts and cash held at clearing brokers is similarly allocated to the Series in proportion to each Series' funds allocated to the Trading Companies or Galaxy Plus entities. Investments and Swaps Income Taxes Income Taxes The 2016 through 2019 tax years generally remain subject to examination by U.S. federal and most state tax authorities. In the opinion of the Managing Owner, (i) the Trust, with respect to the Series, is treated as a partnership for federal income tax purposes and, assuming that at least 90% of the gross income of the Trust constitutes "qualifying income" within the meaning of Section 7704(d) of the Code, (ii) the Trust is not a publicly traded partnership treated as a corporation, and (iii) the discussion set forth in the Prospectus under the heading "U.S. Federal Income Tax Consequences" correctly summarizes the material federal income tax consequences as of the date of the Prospectus to potential U.S. Limited Owners of the purchase, ownership and disposition of Units of the Trust. Fees and Expenses Incentive Fee (rebate) Service Fees Each Series is charged service fees as outlined above. In some cases, amounts paid to selling agents might be less than the amount charged to the Series. When this occurs, the service fee is rebated back to the investor in the form of additional units. During 2017, 2018 and 2019, the Series were not allowed to issue additional units. The Managing Owner has determined that the purchase of additional units of the relevant Series will commence in 2020 at such time as the Series are allowed to sell shares again. As such, the Managing Owner has calculated the amounts for additional units of the relevant series which will be purchased and classified such amounts as Subscriptions in advance for service fee rebates of $22,650, $409, $31,725, $341,603, $19,010, $153,743 and $61,853 for the Frontier Diversified, Long/Short Commodity, Masters, Balanced, Select, Global and Heritage Funds, respectively, as of September 30, 2020. These service fees are part of the offering costs of the Trust, with respect to the Series, which include registration and filing fees, legal and blue-sky expenses, accounting and audit, printing, marketing support and other offering costs which are borne by the Managing Owner. With respect to the service fees, the initial service fee (for the first 12 months) relating to a purchase of Class 1 and Class 1a Units by an investor is prepaid by the Managing Owner to the relevant selling agent in the month following such purchase and is reimbursed for such payment by the Series monthly in arrears in an amount based upon a corresponding percentage of NAV, calculated daily. Consequently, the Managing Owner bears the risk of the downside and enjoys the benefit of the upside potential of any difference between the amount of the initial service fee prepaid by it and the amount of the reimbursement thereof, which may result from variations in NAV over the following 12 months. Pending Owner Additions— Owner redemptions payable— Recently Adopted Accounting Pronouncements— Subsequent Events—The Series follow the provisions of ASC 855, Subsequent Events
Frontier Funds [Member]
Significant Accounting Policies	2. Significant Accounting Policies The following are the significant accounting policies of the Series of the Trust. Basis of Presentation Consolidation Galaxy Plus entities are co-mingled investment vehicles. In addition to the Series, there are other non-affiliated investors in Galaxy Plus entities. Subscriptions and redemptions by these non-affiliated investors will have a direct impact on the Series' ownership percentage in Galaxy Plus entities. It is expected that ownership percentage will fluctuate (sometimes significantly) on a week by week basis which could also result in frequent changes in the consolidating Series. Such fluctuations make consolidating the financial statements of the Galaxy Plus entities both impractical and misleading. Non-consolidation of these Galaxy Plus entities presents a more useful financial statement for the readers. As such, management has decided that presenting Galaxy Plus entities on a non-consolidated basis as investments in other investments companies (a "fund of funds" approach) is appropriate and preferable to the users of these financial statements. Refer to Note 5 for additional disclosures related to these private investment companies. Change in Consolidation Method Use of Estimates— Cash and Cash Equivalents— Interest Income— U.S. Treasury Securities— Fair Value Measurements and Disclosures (" Receivable From Futures Commission Merchants Investment Transactions— Balance Sheet ("ASC 210" Balance Sheet (Topic 210 Any change in net unrealized gain or loss from the preceding period is reported in the statements of operations. Fair value of exchange-traded contracts is based upon exchange settlement prices. Fair value of non-exchange-traded contracts is based on third-party quoted dealer values on the interbank market. For U.S. Treasury securities, interest is recognized in the period earned and the instruments are marked-to-market daily based on third-party information. Transaction costs are recognized as incurred and reflected separately in the statements of operations. Purchase and Sales of Private Investment Companies Foreign Currency Transactions— Allocation of Earnings— Each Series allocates funds to an affiliated Trading Company, or Companies, of the Trust or unaffiliated Galaxy Plus entity. Each Trading Company allocates all of its daily trading gains or losses to the Series in proportion to each Series' ownership trading level interest in the Trading Company, adjusted on a daily basis (except for Trading Advisors and other investments such as swaps that are directly allocated to a specific Series). Likewise, trading gains and losses earned and incurred by the Series through their investments in Galaxy Plus entities are allocated to those Series on a daily basis. The allocation of gains and losses in Galaxy Plus entities are based on each Series pro-rata shares of the trading level of that entity which is updated at the beginning of each month or more frequently if there is a subscription or redemption activity in the entity. The value of all open contracts and cash held at clearing brokers is similarly allocated to the Series in proportion to each Series' funds allocated to the Trading Companies or Galaxy Plus entities. Investments and Swaps Income Taxes Income Taxes The 2016 through 2019 tax years generally remain subject to examination by U.S. federal and most state tax authorities. In the opinion of the Managing Owner, (i) the Trust, with respect to the Series, is treated as a partnership for federal income tax purposes and, assuming that at least 90% of the gross income of the Trust constitutes "qualifying income" within the meaning of Section 7704(d) of the Code, (ii) the Trust is not a publicly traded partnership treated as a corporation, and (iii) the discussion set forth in the Prospectus under the heading "U.S. Federal Income Tax Consequences" correctly summarizes the material federal income tax consequences as of the date of the Prospectus to potential U.S. Limited Owners of the purchase, ownership and disposition of Units of the Trust. Fees and Expenses Incentive Fee (rebate) Service Fees Each Series is charged service fees as outlined above. In some cases, amounts paid to selling agents might be less than the amount charged to the Series. When this occurs, the service fee is rebated back to the investor in the form of additional units. During 2017, 2018 and 2019, the Series were not allowed to issue additional units. The Managing Owner has determined that the purchase of additional units of the relevant Series will commence in 2020 at such time as the Series are allowed to sell shares again. As such, the Managing Owner has calculated the amounts for additional units of the relevant series which will be purchased and classified such amounts as Subscriptions in advance for service fee rebates of $22,650, $409, $31,725, $341,603, $19,010, $153,743 and $61,853 for the Frontier Diversified, Long/Short Commodity, Masters, Balanced, Select, Global and Heritage Funds, respectively, as of September 30, 2020. These service fees are part of the offering costs of the Trust, with respect to the Series, which include registration and filing fees, legal and blue-sky expenses, accounting and audit, printing, marketing support and other offering costs which are borne by the Managing Owner. With respect to the service fees, the initial service fee (for the first 12 months) relating to a purchase of Class 1 and Class 1a Units by an investor is prepaid by the Managing Owner to the relevant selling agent in the month following such purchase and is reimbursed for such payment by the Series monthly in arrears in an amount based upon a corresponding percentage of NAV, calculated daily. Consequently, the Managing Owner bears the risk of the downside and enjoys the benefit of the upside potential of any difference between the amount of the initial service fee prepaid by it and the amount of the reimbursement thereof, which may result from variations in NAV over the following 12 months. Pending Owner Additions— Owner redemptions payable— Recently Adopted Accounting Pronouncements— Subsequent Events—The Series follow the provisions of ASC 855, Subsequent Events

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2020
The Series of Frontier Funds [Member]
Fair Value Measurements	3. Fair Value Measurements In connection with the valuation of investments the Series apply ASC 820. ASC 820 provides clarification that when a quoted price in an active market for the identical asset or liability is not available, a reporting entity is required to measure fair value using certain techniques. ASC 820 also clarifies that when estimating the fair value of an asset or liability, a reporting entity is not required to include a separate input or adjustment to other inputs relating to the existence of a restriction that prevents the transfer of an asset or liability. ASC 820 also clarifies that both a quoted price in an active market for the identical asset or liability at the measurement date and the quoted price for the identical asset or liability when traded as an asset in an active market when no adjustments to the quoted price of the asset are required are Level 1 fair value measurements. Level 1 Inputs Unadjusted quoted prices in active markets for identical financial assets that the reporting entity has the ability to access at the measurement date. Level 2 Inputs Inputs other than quoted prices included in Level 1 that are observable for the financial assets or liabilities, either directly or indirectly. These might include quoted prices for similar financial assets in active markets, quoted prices for identical or similar financial assets in markets that are not active, inputs other than quoted prices that are observable for the financial assets or inputs that are derived principally from or corroborated by market data by correlation or other means. Level 3 Inputs Unobservable inputs for determining the fair value of financial assets that reflect an entity's own assumptions about the assumptions that market participants would use in pricing the financial asset. The Trust, with respect to the Series, uses the following methodologies to value instruments within its financial asset portfolio at fair value: Trading Securities. Swap Contracts. Swap contracts are reported at fair value. Valuation reports are generated and disseminated daily from the swap counterparty to the third-party administrator. The fair value is applied by the third-party administrator to calculate the daily performance. The Managing Owner reviews the third-party administrator's performance reports and any noticeable exceptions are investigated. Unexplained exceptions are escalated to the Managing Owner's Valuation Committee for further evaluation and resolution. Swap contracts are reported at fair value using Level 3 inputs. Investment in Unconsolidated Trading Companies. Investments in Private Investment Companies The following table summarizes investment in each Series measured at fair value on a recurring basis as of September 30, 2020 and December 31, 2019 segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value. September 30, 2020 Level 1 Level 2 Level 3 Total Frontier Diversified Fund Investment in Unconsolidated Trading Companies $ 14,532 $ - $ - $ 14,532 Swap Contracts - - 4,553,855 4,553,855 U.S. Treasury Securities 19,838 - - 19,838 Frontier Masters Fund Investment in Unconsolidated Trading Companies 10,133 - - 10,133 U.S. Treasury Securities 13,832 - - 13,832 Frontier Long/Short Commodity Fund Investment in Unconsolidated Trading Companies 14,637 - - 14,637 Swap Contracts - - 578,274 578,274 U.S. Treasury Securities 19,981 - - 19,981 Frontier Balanced Fund Open Trade Equity (Deficit) (59,775 ) - - (59,775 ) Swap Contracts - - 7,319,420 7,319,420 Frontier Select Fund - Investment in Unconsolidated Trading Companies 4,856 - - 4,856 U.S. Treasury Securities 6,629 - - 6,629 Frontier Global Fund - Investment in Unconsolidated Trading Companies 13,279 - - 13,279 U.S. Treasury Securities 18,127 - - 18,127 Frontier Heritage Fund Investment in Unconsolidated Trading Companies 19,916 - - 19,916 U.S. Treasury Securities 27,187 - - 27,187 December 31, 2019 Level 1 Level 2 Level 3 Total Frontier Diversified Fund Investment in Unconsolidated Trading Companies $ 24,150 $ - $ - $ 24,150 Swap Contracts - - 6,384,583 6,384,583 U.S. Treasury Securities 99,605 - - 99,605 Frontier Masters Fund Investment in Unconsolidated Trading Companies 11,005 - - 11,005 U.S. Treasury Securities 45,391 - - 45,391 Frontier Long/Short Commodity Fund Investment in Unconsolidated Trading Companies 14,711 - - 14,711 Swap Contracts - - 362,521 362,521 U.S. Treasury Securities 60,673 - - 60,673 Frontier Balanced Fund Investment in Unconsolidated Trading Companies 50,867 - - 50,867 Open Trade Equity (Deficit) 57,057 59,127 - 116,184 Swap Contracts - - 11,944,753 11,944,753 U.S. Treasury Securities 209,799 - - 209,799 Frontier Select Fund Investment in Unconsolidated Trading Companies 26,331 - 479,024 505,355 U.S. Treasury Securities 108,603 - - 108,603 Frontier Global Fund Investment in Unconsolidated Trading Companies 11,818 - - 11,818 U.S. Treasury Securities 48,741 - - 48,741 Frontier Heritage Fund Investment in Unconsolidated Trading Companies 18,891 - - 18,891 Swap Contracts - - 2,888,008 2,888,008 U.S. Treasury Securities 77,916 - - 77,916 The changes in Level 3 assets measured at fair value on a recurring basis are summarized in the following tables. Swap contract asset gains and losses included in earnings are classified in "realized and unrealized gain (loss) on investments – net unrealized gain/(loss) on swap contracts" on the statements of operations. Investment in unconsolidated trading company asset gains and losses (realized/unrealized) included in earnings are classified in "Change in fair value of investments in unconsolidated trading companies." During the nine months ended September 30, 2020 and the year ended December 31, 2019, all identified Level 3 assets were components of the Frontier Diversified Fund, Frontier Long/Short Commodity Fund, Frontier Balanced Fund, Frontier Heritage Fund and Frontier Select Fund. For the Nine Months Ending September 30, 2020 Swaps Frontier Balanced Fund Frontier Long/Short Commodity Fund Balance of recurring Level 3 assets as of January 1, 2020 $ 11,944,753 $ 362,521 Total gains or losses (realized/unrealized): Included in earnings-realized - - Included in earnings-unrealized (5,804,030 ) 215,753 Proceeds from collateral reduction - - Purchase (Sale) of investments 1,178,697 - Change in ownership allocation - - Transfers in and/or out of Level 3 - - Balance of recurring Level 3 assets as of September 30, 2020 $ 7,319,420 $ 578,274 Frontier Diversified Fund Frontier Heritage Fund Balance of recurring Level 3 assets as of January 1, 2020 $ 6,384,583 $ 2,888,009 Total gains or losses (realized/unrealized): Included in earnings-realized - (97,745 ) Included in earnings-unrealized (2,099,874 ) 197,829 Proceeds from collateral reduction - (2,474,937 ) Purchase (Sale) of investments 269,146 (513,156 ) Change in ownership allocation - - Transfers in and/or out of Level 3 - - Balance of recurring Level 3 assets as of September 30, 2020 $ 4,553,855 $ 0 For the Nine Months Ending September 30, 2020 Investments in Unconsolidated Trading Companies: Frontier Balance of recurring Level 3 assets as of January 1, 2020 $ 479,024 Change in fair value of investments in unconsolidated trading companies 95,914 Proceeds from sales of investments of unconsolidated trading companies (574,938 ) Purchases of investments of unconsolidated trading companies - Change in ownership allocation - Transfers in and/or out of Level 3 - Balance of recurring Level 3 assets as of September 30, 2020 $ 0 For the Year Ended December 31, 2019 Swaps Frontier Frontier Balance of recurring Level 3 assets as of January 1, 2019 $ 10,794,908 $ 479,102 Total gains or losses (realized/unrealized): Included in earnings-realized - - Included in earnings-unrealized 1,149,845 (116,581 ) Proceeds from collateral reduction - - Change in ownership allocation - - Transfers in and/or out of Level 3 - - Balance of recurring Level 3 assets as of December 31, 2019 $ 11,944,753 $ 362,521 Frontier Frontier Balance of recurring Level 3 assets as of January 1, 2019 $ 5,920,414 $ 2,955,444 Total gains or losses (realized/unrealized): Included in earnings-realized - - Included in earnings-unrealized 464,169 (67,435 ) Proceeds from collateral reduction - - Change in ownership allocation - - Transfers in and/or out of Level 3 - - Balance of recurring Level 3 assets as of December 31, 2019 $ 6,384,583 $ 2,888,009 For the Year Ended December 31, 2019 Investments in Unconsolidated Trading Companies Frontier Balance of recurring Level 3 assets as of January 1, 2019 $ 511,718 Change in fair value of investments in unconsolidated trading companies (32,694 ) Purchases of investments of unconsolidated trading companies - Change in ownership allocation - Transfers in and/or out of Level 3 - Balance of recurring Level 3 assets as of December 31, 2019 $ 479,024 The Series of the Trust assess the levels of the investments at each measurement date, and transfers between levels are recognized on the actual date of the event or change in circumstances that caused the transfer in accordance with the Series' accounting policy regarding the recognition of transfers between levels of the fair value hierarchy. During the three months ended September 30, 2020, the Trust did not transfer any assets between Levels 1, 2 or 3. The amounts reflected in the change in ownership allocation result from changes in ownership in the underlying Trading Companies at the Series level, which have resulted in changes in consolidation or de-consolidation by the Series. The ownership in the Trading Companies is accounted for under the equity method, which approximates fair value. The Frontier Heritage Fund and the Frontier Select Fund jointly own the Frontier Brevan Howard swap. The Frontier Heritage Fund owned the majority interest in the Frontier Brevan Howard swap. During the nine months ended September 30, 2020, the entire investment in the Frontier Brevan Howard swap was sold. The total change in unrealized appreciation (depreciation) included in the statements of operations attributable to level 3 investments still held at September 30, 2020. Frontier Frontier Frontier Frontier Swap Contracts $ (2,099,874 ) $ 215,753 $ (5,804,030 ) $ 197,829 Frontier Investments in Unconsolidated Trading Companies $ 95,914 The total change in unrealized appreciation (depreciation) included in the statements of operations attributable to level 3 investments still held at December 31, 2019. Frontier Frontier Frontier Frontier Swap Contracts $ 464,169 $ (116,581 ) $ 1,149,845 $ (67,436 ) Frontier Investments in Unconsolidated Trading Companies $ (32,694 )
Frontier Funds [Member]
Fair Value Measurements	3. Fair Value Measurements In connection with the valuation of investments the Trust applies ASC 820, Fair Value Measurement ("ASC 820") Level 1 Inputs Unadjusted quoted prices in active markets for identical financial assets that the reporting entity has the ability to access at the measurement date. Level 2 Inputs Inputs other than quoted prices included in Level 1 that are observable for the financial assets or liabilities, either directly or indirectly. These might include quoted prices for similar financial assets in active markets, quoted prices for identical or similar financial assets in markets that are not active, inputs other than quoted prices that are observable for the financial assets or inputs that are derived principally from or corroborated by market data by correlation or other means. Level 3 Inputs Unobservable inputs for determining the fair value of financial assets that reflect an entity's own assumptions about the assumptions that market participants would use in pricing the financial asset. The Trust uses the following methodologies to value instruments within its financial asset portfolio at fair value: Trading Securities. Swap Contracts. Swap contracts are reported at fair value. Valuation reports are generated and disseminated daily from the swap counterparty to the third-party administrator. The fair value is applied by the third-party administrator to calculate the daily performance. The Managing Owner reviews the third-party administrator's performance reports and any noticeable exceptions are investigated. Unexplained exceptions are escalated to the Managing Owner's Valuation Committee for further evaluation and resolution. Swap contracts are reported at fair value using Level 3 inputs. Investments in Private Investment Companies The following table summarizes the instruments that comprise the Trust's financial asset portfolio, in aggregate, measured at fair value on a recurring basis as of September 30, 2020 and December 31,2019, segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value: September 30, 2020 Level 1 Level 2 Level 3 Fair Value Open Trade Equity (Deficit) $ (59,775 ) $ - $ - $ (59,775 ) Swap Contracts - - 12,451,549 12,451,549 U.S. Treasury Securities 105,594 - - 105,594 December 31, 2019 Level 1 Level 2 Level 3 Fair Value Open Trade Equity (Deficit) $ 57,056 $ 59,128 $ - $ 116,184 Swap Contracts - - 21,579,865 21,579,865 U.S. Treasury Securities 650,728 - - 650,728 The changes in Level 3 assets measured at fair value on a recurring basis are summarized in the following tables. Swap contract asset gains and losses (realized/unrealized) included in earnings are classified in "realized and unrealized gain (loss) on investments – net unrealized gain/(loss) on swap contracts" on the statements of operations. For the nine months ending September 30, 2020 For the Nine Months ended September 30, Balance of recurring Level 3 assets as of January 1, 2020 21,579,865 Total gains or losses (realized/unrealized): Included in earnings-realized (97,744 ) Included in earnings-unrealized (7,490,322 ) Proceeds from collateral reduction (2,474,938 ) Purchase of investments 934,688 Sale of investments - Transfers in and/or out of Level 3 - Balance of recurring Level 3 assets as of September 30, 2020 12,451,549 For the year end December 31, 2019 For the Year Balance of recurring Level 3 assets as of January 1, 2019 20,149,868 Total gains or losses (realized/unrealized): Included in earnings-realized - Included in earnings-unrealized 1,429,997 Proceeds from collateral reduction - Purchase of investments - Sale of investments - Transfers in and/or out of Level 3 - Balance of recurring Level 3 assets as of December 31, 2019 21,579,865 The Trust assesses the levels of the investments at each measurement date, and transfers between levels are recognized on the actual date of the event or change in circumstances that caused the transfer in accordance with the Trust's accounting policy regarding the recognition of transfers between levels of the fair value hierarchy. During the three months ended September 30, 2020 and December 31, 2019, the Trust did not transfer any assets between Levels 1, 2 and 3. The total change in unrealized appreciation (depreciation) included in the statements of operations attributable to level 3 investments still held at September 30, 2020: Swaps $(7,490,322). The total change in unrealized appreciation (depreciation) included in the statements of operations attributable to level 3 investments still held at December 31, 2019: Swaps $1,429,997.

Swap Contracts

Swap Contracts	9 Months Ended
	Sep. 30, 2020
The Series of Frontier Funds [Member]
Swap Contracts	4. Swap Contracts In addition to authorizing Trading Advisors to manage predetermined investment levels of futures, option on futures and forward contracts, certain Series of the Trust will strategically invest a portion or all of their assets in total return swaps, selected at the direction of the Managing Owner. Total return swaps are privately negotiated contracts designed to provide investment returns linked to those produced by one or more investment products or indices. In a typical total return swap, two parties agree to exchange the returns (or differentials in rates of return) earned or realized on one or more particular predetermined investments or instruments. The gross returns to be exchanged or "swapped" between the parties are calculated with respect to a "notional amount" (i.e., the amount or value of the underlying asset used in computing the particular interest rate, return, or other amount to be exchanged) in a particular investment, or in a "basket" of securities. Each Series' investment in swaps will likely differ substantially over time due to cash flows, portfolio management decisions and market movements. The swaps serve to diversify the investment holdings of each Series and to provide access to programs and advisors that would not be otherwise available to such Series, and are not used for hedging purposes. The Managing Owner follows a procedure in selecting well-established financial institutions which the Managing Owner, in its sole discretion, considers to be reputable, reliable, financially responsible and well established to act as swap counterparties. The procedure includes due diligence review of documentation on all new and existing financial institution counterparties prior to initiation of the relationship, and quarterly ongoing review during the relationship, to ensure that counterparties meet the Managing Owner's minimum credit requirements, the counterparty average rating being no less than an investment grade rating as defined by the rating agencies. As of September 30, 2020, and December 31, 2019, approximately 6.39% and 2.40% respectively, of the Trust's assets were deposited with over-the-counter counterparties in order to initiate and maintain swaps and is recorded as collateral within the swap fair value within the Statements of Financial Condition. The cash held with the counterparty is not restricted. The Series may strategically invest assets in one or more swaps linked to certain underlying investments or indices at the direction of the Managing Owner. The Trading Company in which the assets of these Series will be invested will not own any of the investments or indices referenced by any swap entered into by these Series. In addition, neither the swap counterparty to the Trading Company of these Series nor any advisor referenced by any such swap is a Trading Advisor to these Series. To help to reduce counterparty risk on the Series, the Managing Owner has the right to reduce a Series' exposure and remove cash from the Series' total return swaps with Deutsche Bank AG. The Series are charged interest on cash holdings and any amount removed will be offset against the final settlement value of the swap. As of September 30, 2020, the Frontier Balanced Fund, the Frontier Diversified Fund and the Frontier Long/Short Commodity Fund, had $6,176,555, $4,000,000, and $115,000, respectively, in cash holdings as shown in the Series' Statements of Financial Conditions under advance on unrealized swap appreciation, which relates to the Trading Companies' total return swaps with Deutsche Bank AG. The Series have invested in the following swaps as of and for the nine months ended September 30, 2020: Frontier Frontier Frontier Total Return Total Return Total Return Counterparty Deutsche Bank Deutsche Bank Deutsche Bank Notional Amount $ 7,420,403 $ 1,761,834 $ 653,610 Termination Date 7/31/2023 7/31/2023 7/31/2023 Cash Collateral $ 1,264,696 $ 355,147 $ 29,950 Swap Value $ 6,054,724 $ 4,198,708 $ 548,324 Investee Returns Total Returns Total Returns Total Returns Realized Gain/(Loss) $ 0 $ 0 $ 0 Change in Unrealized Gain/(Loss) $ (5,804,030 ) $ (2,099,874 ) $ 215,753 Fair Value as of September 30, 2020 $ 7,319,420 $ 4,553,855 $ 578,274 Advance on swap appreciation $ (6,176,555 ) $ (4,000,000 ) $ (115,000 ) The Series have invested in the following swaps as of and for the year ended December 31, 2019: Frontier Frontier Frontier Frontier Total Return Total Return Total Return Total Return Counterparty Deutsche Bank Deutsche Bank Deutsche Bank Deutsche Bank Notional Amount $ 7,420,403 $ 1,761,834 $ 653,610 $ 2,072,056 Termination Date 7/31/2023 7/31/2023 7/31/2023 3/27/2023 Cash Collateral $ 86,000 $ 86,000 $ 29,950 $ 975,450 Swap Value $ 11,858,754 $ 6,298,583 $ 332,571 $ 1,912,559 Investee Returns Total Returns Total Returns Total Returns Total Returns Realized Gain/(Loss) $ 0 $ 0 $ 0 $ 0 Change in Unrealized Gain/(Loss) $ 1,149,846 $ 464,169 $ (116,581 ) $ (67,435 ) Fair Value as of December 31, 2019 $ 11,944,754 $ 6,384,583 $ 362,521 $ 2,888,009 Advance on swap appreciation $ (6,176,555 ) $ (4,000,000 ) $ (115,000 ) $ (1,900,000 )
Frontier Funds [Member]
Swap Contracts	4. Swap Contracts In addition to authorizing Trading Advisors to manage predetermined investment levels of futures and forward contracts, certain Series of the Trust will strategically invest a portion or all of their assets in total return swaps, selected at the direction of the Managing Owner. Total return swaps are privately negotiated contracts designed to provide investment returns linked to those produced by one or more investment products or indices. In a typical total return swap, two parties agree to exchange the returns (or differentials in rates of return) earned or realized on one or more particular predetermined investments or instruments. The gross returns to be exchanged or "swapped" between the parties are calculated with respect to a "notional amount" (i.e., the amount or value of the underlying asset used in computing the particular interest rate, return, or other amount to be exchanged) in a particular investment, or in a "basket" of securities. The Trust's investment in swaps will likely differ substantially over time due to cash flows, portfolio management decisions and market movements. The swaps serve to diversify the investment holdings of the Trust and to provide access to programs and advisors that would not be otherwise available to the Trust and are not used for hedging purposes. The Managing Owner follows a procedure in selecting well-established financial institutions which the Managing Owner, in its sole discretion, considers to be reputable, reliable, financially responsible and well established to act as swap counterparties. The procedure includes due diligence review of documentation on all new and existing financial institution counterparties prior to initiation of the relationship, and quarterly ongoing review during the relationship, to ensure that counterparties meet the Managing Owner's minimum credit requirements, the counterparty average rating being no less than an investment grade rating as defined by the rating agencies. As of September 30, 2020 and December 31, 2019, approximately 6.39% or $1,649,793 and 2.4% or $1,177,400, respectively, of the Trust's assets were deposited with over-the-counter counterparties in order to initiate and maintain swaps and is recorded as swap contracts, at fair value on the Statements of Financial Condition of the Trust. This cash held with the counterparty is not restricted. The Trust strategically invests assets in one or more swaps linked to certain underlying investments or indices at the direction of the Managing Owner. The Trading Company in which the assets of the Trust will be invested will not own any of the investments or indices referenced by any swap entered into by the Trust. In addition, neither the swap counterparty nor any advisor referenced by any such swap is a Trading Advisor to the Trust. To help to reduce counterparty risk on the Series, the Managing Owner has the right to reduce the Series' exposure and remove cash from the Series' total return swaps with Deutsche Bank AG. The Series are charged interest on cash holdings and any amount removed will be offset against the final settlement value of the swap. As of September 30, 2020, the XXXIV Balanced select swap, the XXXV Diversified select swap and the XXXVII Long/Short select swap had $6,176,555, $4,000,000 and $115,000, respectively, in cash holdings as shown in the Series' Statements of Financial Conditions under advance on unrealized swap appreciation, which relates to the Trading Companies' total return swaps with Deutsche Bank AG. The Trust had invested in the following swaps as of and for the three months ended September 30, 2020: XXXIV XXXV XXXVII L/S Total Return Total Return Total Return Counterparty Deutsche Bank Deutsche Bank Deutsche Bank Notional Amount $ 7,420,403 $ 1,761,834 $ 653,610 Termination Date 7/31/2023 7/31/2023 7/31/2023 Cash Collateral $ 1,264,696 $ 355,147 $ 29,950 Swap Value $ 6,054,724 $ 4,198,708 $ 548,324 Investee Returns Total Returns Total Returns Total Returns Realized Gain/(Loss) $ 0 $ 0 $ 0 Change in Unrealized Gain/(Loss) $ (5,804,030 ) $ (2,099,874 ) $ 215,753 Fair Value as of September 30, 2020 $ 7,319,420 $ 4,553,855 $ 578,274 Advance on swap appreciation $ (6,176,555 ) $ (4,000,000 ) $ (115,000 ) The Trust had invested in the following swaps as of and for the year ended December 31, 2019: XXXIV XXXV XXXVII L/S Brevan Total Return Total Return Total Return Total Return Counterparty Deutsche Bank Deutsche Bank Deutsche Bank Deutsche Bank Notional Amount $ 7,420,403 $ 1,761,834 $ 653,610 $ 2,072,056 Termination Date 7/31/2023 7/31/2023 7/31/2023 3/27/2023 Cash Collateral $ 86,000 $ 86,000 $ 29,950 $ 975,450 Swap Value $ 11,858,754 $ 6,298,583 $ 332,571 $ 1,912,559 Investee Returns Total Returns Total Returns Total Returns Total Returns Realized Gain/(Loss) $ 0 $ 0 $ 0 $ 0 Change in Unrealized Gain/(Loss) $ 1,149,846 $ 464,169 $ (116,581 ) $ (67,435 ) Fair Value as of December 31, 2019 $ 11,944,754 $ 6,384,583 $ 362,521 $ 2,888,009 Advance on swap appreciation $ (6,176,555 ) $ (4,000,000 ) $ (115,000 ) $ (1,900,000 )

Investments in Unconsolidated T

Investments in Unconsolidated Trading Companies and Private Investment Companies	9 Months Ended
	Sep. 30, 2020
The Series of Frontier Funds [Member]
Investments in Unconsolidated Trading Companies and Private Investment Companies	5. Investments in Unconsolidated Trading Companies and Private Investment Companies Investments in unconsolidated Trading Companies and private investment companies represent cash and open trade equity invested in the Trading Companies and private investment companies and cumulative trading profits or losses allocated to each Series by the Trading Companies and private investment companies. Trading Companies and private investment companies allocate trading profits or losses on the basis of the proportion of each Series' capital allocated for trading to each respective Trading Company, which bears no relationship to the amount of cash invested by a Series in the Trading Company and private investment companies. The Trading Companies are valued using the equity method of accounting, which approximates fair value. Investments in private investment companies are valued using the NAV provided by the underlying private investment. The following table summarizes each of the Series' investments in unconsolidated Trading Companies as of September 30, 2020 and December 31, 2019: As of September 30, 2020 As of December 31, 2019 Percentage of Percentage of Series Total Series Total Capital Invested in Capital Invested in Series Unconsolidated Fair Value Unconsolidated Fair Value Frontier Diversified Series — Frontier Trading Company XXXVIII 0.28 % $ 14,532 0.20 % $ 24,150 Frontier Masters Fund — Frontier Trading Company XXXVIII 0.80 % $ 10,133 0.49 % $ 11,005 Frontier Long/Short Commodity Fund — Frontier Trading Company XXXVIII 1.16 % $ 14,637 1.10 % $ 14,711 Frontier Balanced Fund — Frontier Trading Company XXXVIII 0.00 % $ - 0.23 % $ 50,867 Frontier Select Fund — Frontier Trading Companies XXXVIII and XXXIX* 0.32 % $ 4,856 17.94 % $ 505,355 Frontier Global Fund — Frontier Trading Company XXXVIII 0.44 % $ 13,279 0.25 % $ 11,818 Frontier Heritage Fund — Frontier Trading Company XXXVIII 0.92 % $ 19,916 0.57 % $ 18,891 * The investment in Frontier Trading Company XXXIX was sold as of June 30, 2020. The Galaxy Plus structure is made up of feeder funds in which the Series invest and master trading entities into which the feeder funds invest. No investment held by a Galaxy Plus master trading entity is greater than 5% of the Series' total capital. The following tables summarize each of the Series' equity in earnings from unconsolidated Trading Companies and private investment companies for the three and nine months ended September 30, 2020 and 2019. Three months ended September 30, 2020 and 2019 Three Months Ended September, 2020 Three Months Ended September, 2019 Trading Realized Change in Unrealized Net Income Trading Realized Change in Unrealized Net Income Commissions Gain/(Loss) Gain/(Loss) (Loss) Commissions Gain/(Loss) Gain/(Loss) (Loss) Frontier Balanced Fund Frontier Trading Company II, LLC $ - $ - $ - $ - $ - $ - $ - $ - Frontier Trading Company XXXVIII, LLC - - 371 371 - - 52,720 52,720 Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (1,694 ) (175,943 ) (21,260 ) (198,897 ) (10,590 ) 640,212 (345,285 ) 284,337 Galaxy Plus Fund - Doherty Feeder Fund (528) LLC - - 105 105 (3,924 ) (8,300 ) 50,362 38,138 Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC - - (5,782 ) (5,782 ) (34,168 ) 2,197,458 (2,736,881 ) (573,591 ) Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC (4,862 ) (3,470 ) (33,133 ) (41,465 ) (18,141 ) 489,021 (189,474 ) 281,406 Galaxy Plus Fund - LRR Feeder Fund (522) LLC - - (21,170 ) (21,170 ) - - 49,989 49,989 Galaxy Plus Fund - QIM Feeder Fund (526) LLC (709 ) (231,484 ) 107,025 (125,168 ) (25,825 ) (82,440 ) (70,768 ) (179,033 ) Galaxy Plus Fund - Quantmetrics Feeder Fund (527) LLC - - - - - - (3,220 ) (3,220 ) Galaxy Plus Fund - Quest Feeder Fund (517) LLC (3,539 ) (27,771 ) 22,238 (9,072 ) (5,556 ) 49,061 (81,389 ) (37,884 ) Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (10,562 ) 101,830 (36,659 ) 54,609 (16,734 ) 624,290 (260,857 ) 346,699 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) (1,279 ) (396,950 ) (62,845 ) (461,074 ) - - - - - Total $ (22,645 ) $ (733,788 ) $ (51,110 ) $ (807,543 ) $ (114,938 ) $ 3,909,302 $ (3,534,803 ) $ 259,561 Frontier Global Fund Frontier Trading Company II LLC $ - $ - $ - $ - $ - $ - $ - $ - Frontier Trading Company XXXVIII, LLC - - (2,540 ) (2,540 ) - - (1,261 ) (1,261 ) Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (3,236 ) (317,392 ) (114,867 ) (435,495 ) (121,925 ) 1,258,329 (679,244 ) 457,160 Total $ (3,236 ) $ (317,392 ) $ (117,407 ) $ (438,035 ) $ (121,925 ) $ 1,258,329 $ (680,505 ) $ 455,899 Frontier Select Fund Frontier Trading Company XXXIX, LLC $ - $ - $ - $ - $ - $ - $ 861 $ 861 Frontier Trading Company XXXVIII, LLC - - (1,518 ) (1,518 ) - - (1,956 ) (1,956 ) Galaxy Plus Fund - Doherty Feeder Fund (528) LLC - - (587 ) (587 ) - - - - Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (3,352 ) 33,407 (19,556 ) 10,499 (21,113 ) 271,422 (171,309 ) 79,000 Galaxy Plus Fund - TT Feeder Fund (531) LLC - - (2,763 ) (2,763 ) (15,229 ) 163,325 (80,638 ) 67,458 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) - - (205,413 ) (205,413 ) - - - - Total $ (3,352 ) $ 33,407 $ (229,837 ) $ (199,782 ) $ (36,342 ) $ 434,747 $ (253,042 ) $ 145,363 Frontier Heritage Fund Frontier Trading Company II, LLC $ - $ - $ - $ - $ - $ - $ - $ - Frontier Trading Company XXXVIII, LLC - - 1,742 1,742 - - (1,353 ) (1,353 ) Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (1,524 ) (149,796 ) 275,381 124,061 (31,111 ) 249,999 (134,889 ) 83,999 Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (3,338 ) 34,047 (22,669 ) 8,040 (19,282 ) 210,449 (108,204 ) 82,963 - Total $ (4,862 ) $ (115,749 ) $ 254,454 $ 133,843 $ (50,393 ) $ 460,448 $ (244,446 ) $ 165,609 Frontier Long/Short Commodity Fund Frontier Trading Company XXXVIII, LLC $ - $ - $ (2,028 ) $ (2,028 ) $ - $ - $ (530 ) $ (530 ) Galaxy Plus Fund - Chesapeake Feeder Fund (518) LLC - - - - - - - - Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC - - (882 ) (882 ) (13,946 ) 470,976 (588,738 ) (131,708 ) Galaxy Plus Fund - LRR Feeder Fund (522) LLC (306 ) 40,222 (55,994 ) (16,078 ) - - (40,791 ) (40,791 ) Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (1,198 ) 12,151 (9,162 ) 1,791 (9,973 ) 84,971 (38,123 ) 36,875 Total $ (1,504 ) $ 52,373 $ (68,066 ) $ (17,197 ) $ (23,919 ) $ 555,947 $ (668,182 ) $ (136,154 ) Frontier Diversified Fund Frontier Trading Company II, LLC $ - $ - $ - $ - $ - $ - $ - $ - Frontier Trading Company XXXVIII, LLC - - (426 ) (426 ) - - (1,299 ) (1,299 ) Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (1,068 ) (107,528 ) (19,659 ) (128,255 ) (11,523 ) 380,182 (214,655 ) 154,004 Galaxy Plus Fund - Doherty Feeder Fund (528) LLC - - 182 182 (4,242 ) (5,567 ) 33,921 24,112 Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC - - (3,544 ) (3,544 ) (25,787 ) 1,535,085 (1,923,484 ) (414,186 ) Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC (2,034 ) (1,729 ) (18,808 ) (22,571 ) (18,205 ) 359,073 (146,762 ) 194,106 Galaxy Plus Fund - LRR Feeder Fund (522) LLC - - (9,084 ) (9,084 ) - - 21,004 21,004 Galaxy Plus Fund - QIM Feeder Fund (526) LLC (271 ) (4,480 ) (47,525 ) (52,276 ) (18,552 ) (47,540 ) (43,774 ) (109,866 ) Galaxy Plus Fund - Quantmetrics Feeder Fund (527) LLC - - - - - - - - Galaxy Plus Fund - Quest Feeder Fund (517) LLC (2,406 ) (18,673 ) 13,323 (7,756 ) (6,204 ) 46,394 (71,948 ) (31,758 ) Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (3,320 ) 40,922 (22,756 ) 14,846 (13,631 ) 396,481 (197,360 ) 185,490 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) (639 ) (198,372 ) (32,551 ) (231,562 ) - - - - Total $ (9,738 ) $ (289,860 ) $ (140,848 ) $ (440,446 ) $ (98,144 ) $ 2,664,108 $ (2,544,357 ) $ 21,607 Frontier Masters Fund Frontier Trading Company II, LLC $ - $ - $ - $ - $ - $ - $ - $ - Frontier Trading Company XXXVIII, LLC - - (1,279 ) (1,279 ) - - (1,813 ) (1,813 ) Galaxy Plus Fund - Chesapeake Feeder Fund (518) LLC - - - - - - - - Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (608 ) (62,539 ) (9,877 ) (73,024 ) (21,521 ) 218,469 (117,862 ) 79,086 Galaxy Plus Fund - Doherty Feeder Fund (528) LLC - - (147 ) (147 ) - - - Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC - - (1,242 ) (1,242 ) (16,746 ) 734,894 (911,225 ) (193,077 ) Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (1,164 ) 13,859 (11,510 ) 1,185 (6,607 ) 98,467 (58,877 ) 32,983 Galaxy Plus Fund - TT Feeder Fund (531) LLC - - (1,002 ) (1,002 ) (11,578 ) 153,702 (78,716 ) 63,408 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) (365 ) (113,226 ) (22,157 ) (135,748 ) - - - - Total $ (2,137 ) $ (161,906 ) $ (47,214 ) $ (211,257 ) $ (56,452 ) $ 1,205,532 $ (1,168,493 ) $ (19,413 ) Nine months ended September 30, 2020 and 2019 Nine Months Ended September, 2020 Nine Months Ended September, 2019 Trading Realized Change in Unrealized Net Income Trading Realized Change in Unrealized Net Income Commissions Gain/(Loss) Gain/(Loss) (Loss) Commissions Gain/(Loss) Gain/(Loss) (Loss) Frontier Balanced Fund Frontier Trading Company II, LLC $ - $ - $ - $ - $ - $ - $ (138,899 ) $ (138,899 ) Frontier Trading Company XXXVIII, LLC - - (9,094 ) (9,094 ) - - 51,988 51,988 Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (6,794 ) (163,459 ) (16,563 ) (186,816 ) (32,960 ) 1,276,134 (143,617 ) 1,099,557 Galaxy Plus Fund - Doherty Feeder Fund (528) LLC (2,152 ) (55,735 ) 25,629 (32,258 ) (21,819 ) 37,771 (28,451 ) (12,499 ) Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC (6,408 ) (718,397 ) 75,749 (649,056 ) (207,730 ) 1,181,067 (2,772,516 ) (1,799,179 ) Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC (20,836 ) (327,914 ) 156,749 (192,001 ) (36,877 ) 1,781,745 (263,870 ) 1,480,998 Galaxy Plus Fund - LRR Feeder Fund (522) LLC (502 ) (232,245 ) (42,835 ) (275,582 ) - - 336,666 336,666 Galaxy Plus Fund - QIM Feeder Fund (526) LLC (9,264 ) (899,303 ) 157,923 (750,644 ) (75,800 ) (1,019,048 ) 114,320 (980,528 ) Galaxy Plus Fund - Quantmetrics Feeder Fund (527) LLC - - - - (25,311 ) 24,230 (124,478 ) (125,559 ) Galaxy Plus Fund - Quest Feeder Fund (517) LLC (5,240 ) 28,824 (6,624 ) 16,960 (12,342 ) 94,895 (60,935 ) 21,618 Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (23,203 ) 698,761 (196,095 ) 479,463 (62,382 ) 1,610,738 (656,986 ) 891,370 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) (1,279 ) (396,950 ) (62,845 ) (461,074 ) - - - - - Total $ (75,678 ) $ (2,066,418 ) $ 81,994 $ (2,060,102 ) $ (475,221 ) $ 4,987,532 $ (3,686,778 ) $ 825,533 Frontier Global Fund Frontier Trading Company II LLC $ - $ - $ - $ - $ - $ - $ (337,431 ) $ (337,431 ) Frontier Trading Company XXXVIII, LLC - - (2,994 ) (2,994 ) - - (15,835 ) (15,835 ) Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (11,634 ) (316,235 ) (194,046 ) (521,915 ) (275,586 ) 2,465,012 (544,481 ) 1,644,945 Total $ (11,634 ) $ (316,235 ) $ (197,040 ) $ (524,909 ) $ (275,586 ) $ 2,465,012 $ (897,747 ) $ 1,291,679 Frontier Select Fund Frontier Trading Company XXXIX, LLC $ - $ - $ - $ - $ - $ - $ 40,244 $ 40,244 Frontier Trading Company XXXVIII, LLC - - (8,190 ) (8,190 ) - - (3,628 ) (3,628 ) Galaxy Plus Fund - Doherty Feeder Fund (528) LLC - - (2,203 ) (2,203 ) - - - - Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (7,477 ) 228,470 (72,058 ) 148,935 (55,024 ) 494,161 (218,377 ) 220,760 Galaxy Plus Fund - TT Feeder Fund (531) LLC (5,392 ) (237,723 ) (35,753 ) (278,868 ) (59,657 ) 423,016 (153,951 ) 209,408 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) - - (205,413 ) (205,413 ) - - - - - Total $ (12,869 ) $ (9,253 ) $ (323,617 ) $ (345,739 ) $ (114,681 ) $ 917,177 $ (335,712 ) $ 466,784 Frontier Heritage Fund Frontier Trading Company II, LLC $ - $ - $ - $ - $ - $ - $ (59,538 ) $ (59,538 ) Frontier Trading Company XXXVIII, LLC - - (1,582 ) (1,582 ) - - (5,732 ) (5,732 ) Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (4,298 ) (151,155 ) 238,686 83,233 (72,845 ) 495,954 (67,669 ) 355,440 Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (7,216 ) 215,524 (85,350 ) 122,958 (68,969 ) 494,538 (171,703 ) 253,866 - Total $ (11,514 ) $ 64,369 $ 151,754 $ 204,609 $ (141,814 ) $ 990,492 $ (304,642 ) $ 544,036 Frontier Long/Short Commodity Fund Frontier Trading Company XXXVIII, LLC $ - $ - $ (5,104 ) $ (5,104 ) $ - $ - $ (1,559 ) $ (1,559 ) Galaxy Plus Fund - Chesapeake Feeder Fund (518) LLC - - - - - - - - Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC (938 ) (103,100 ) 7,770 (96,268 ) (51,774 ) 91,669 (359,162 ) (319,267 ) Galaxy Plus Fund - LRR Feeder Fund (522) LLC (978 ) (76,740 ) (71,464 ) (149,182 ) - 102,078 102,078 Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (2,824 ) 88,947 (28,627 ) 57,496 (33,999 ) 210,457 (82,652 ) 93,806 Total $ (4,740 ) $ (90,893 ) $ (97,425 ) $ (193,058 ) $ (85,773 ) $ 302,126 $ (341,295 ) $ (124,942 ) Frontier Diversified Fund Frontier Trading Company II, LLC $ - $ - $ - $ - $ - $ - $ (76,616 ) $ (76,616 ) Frontier Trading Company XXXVIII, LLC - - 2,597 2,597 - - (10,295 ) (10,295 ) Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (4,438 ) (76,179 ) (9,500 ) (90,117 ) (31,082 ) 759,977 (110,678 ) 618,217 Galaxy Plus Fund - Doherty Feeder Fund (528) LLC (1,348 ) (39,612 ) 17,858 (23,102 ) (18,315 ) 22,480 (15,067 ) (10,902 ) Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC (4,119 ) (463,144 ) 50,394 (416,869 ) (134,743 ) 622,921 (1,655,383 ) (1,167,205 ) Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC (13,164 ) (203,387 ) 60,454 (156,097 ) (39,203 ) 1,170,183 (204,327 ) 926,653 Galaxy Plus Fund - LRR Feeder Fund (522) LLC (309 ) (144,282 ) (21,773 ) (166,364 ) - - 165,797 165,797 Galaxy Plus Fund - QIM Feeder Fund (526) LLC (4,112 ) (248,715 ) (1,085 ) (253,912 ) (53,774 ) (620,976 ) 70,231 (604,519 ) Galaxy Plus Fund - Quantmetrics Feeder Fund (527) LLC - - - - (13,254 ) 10,639 (7,477 ) (10,092 ) Galaxy Plus Fund - Quest Feeder Fund (517) LLC (3,920 ) 35,081 (6,574 ) 24,587 (14,152 ) 91,712 (51,421 ) 26,139 Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (10,591 ) 416,995 (40,991 ) 365,413 (47,633 ) 1,000,463 (394,168 ) 558,662 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) (639 ) (198,372 ) (32,551 ) (231,562 ) - - - - Total $ (42,640 ) $ (921,615 ) $ 18,829 $ (945,426 ) $ (352,156 ) $ 3,057,399 $ (2,289,404 ) $ 415,839 Frontier Masters Fund Frontier Trading Company II, LLC $ - $ - $ - $ - $ - $ - $ (65,952 ) $ (65,952 ) Frontier Trading Company XXXVIII, LLC - - (3,554 ) (3,554 ) - - (3,371 ) (3,371 ) Galaxy Plus Fund - Chesapeake Feeder Fund (518) LLC - - - - - - - - Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (2,657 ) (64,127 ) (37,949 ) (104,733 ) (53,384 ) 450,235 (48,097 ) 348,754 Galaxy Plus Fund - Doherty Feeder Fund (528) LLC - - (59 ) (59 ) - - - - Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC (1,540 ) (190,409 ) 30,438 (161,511 ) (98,334 ) 571,048 (1,099,905 ) (627,191 ) Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (3,172 ) 109,775 (20,607 ) 85,996 (24,523 ) 175,753 (10,967 ) 140,263 Galaxy Plus Fund - TT Feeder Fund (531) LLC (1,851 ) (84,259 ) (11,424 ) (97,534 ) (50,514 ) 368,511 (161,851 ) 156,146 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) (365 ) (113,226 ) (22,157 ) (135,748 ) - - - - Total $ (9,585 ) $ (342,246 ) $ (65,312 ) $ (417,143 ) $ (226,755 ) $ 1,565,547 $ (1,390,143 ) $ (51,351 ) The Series' investments in private investment companies have certain redemption and liquidity restrictions which are described in the following table: Redemptions Redemptions Liquidity Notice Period Permitted Restrictions Frontier Diversified Fund Multi-Strategy Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC 24 hours Daily None Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) 24 hours Daily None Trend Following Galaxy Plus Fund - Aspect Feeder Fund (532) LLC 24 hours Daily None Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC 24 hours Daily None Galaxy Plus Fund - QIM Feeder Fund (526) LLC 24 hours Daily None Galaxy Plus Fund - Quest Feeder Fund (517) LLC 24 hours Daily None Frontier Masters Fund Trend Following Galaxy Plus Fund - Aspect Feeder Fund (532) LLC 24 hours Weekly None Multi-Strategy Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC 24 hours Daily None Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) 24 hours Daily None Frontier Long/Short Commodity Fund Multi-Strategy Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC 24 hours Daily None Galaxy Plus Fund - LRR Feeder Fund (522) LLC 24 hours Daily None Frontier Balanced Fund Multi-Strategy Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) 24 hours Daily None Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC 24 hours Daily None Trend Following Galaxy Plus Fund - Aspect Feeder Fund (532) LLC 24 hours Daily None Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC 24 hours Daily None Galaxy Plus Fund - QIM Feeder Fund (526) LLC 24 hours Daily None Galaxy Plus Fund - Quest Feeder Fund (517) LLC 24 hours Daily None Frontier Select Fund Multi-Strategy Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC 24 hours Daily None Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) 24 hours Daily None Frontier Global Fund Trend Following Galaxy Plus Fund - Aspect Feeder Fund (532) LLC 24 hours Daily None Frontier Heritage Fund Multi-Strategy Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC 24 hours Daily None Trend Following Galaxy Plus Fund - Aspect Feeder Fund (532) LLC 24 hours Daily None Effective July 20, 2020, Doherty Advisors, LLC accessed through Galaxy Plus Fund – Doherty Feeder Fund (528) LLC ceased to act as a commodity trading advisor to the Trust. Effective August 1, 2020, John Locke Investments SA accessed through Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC became a new commodity trading advisor for Frontier Diversified Fund, Frontier Balanced Fund, Frontier Select Fund and Frontier Masters Fund.
Frontier Funds [Member]
Investments in Unconsolidated Trading Companies and Private Investment Companies	5. Investments in Private Investment Companies Investments in private investment companies represent cash and open trade equity invested in the private investment companies as well as the cumulative trading profits or losses allocated to the Trust by the private investment companies. Private investment companies allocate trading profits or losses on the basis of the proportion of the Trust's capital allocated for trading to each respective private investment company, which bears no relationship to the amount of cash invested by the Trust in the private investment companies. Investments in private investment companies are valued using the NAV provided by the underlying private investment. The Galaxy Plus structure is made up of feeder funds in which the Trust invests and master trading entities into which the feeder funds invest. No investment held by a Galaxy Plus master trading entity is greater than 5% of the Trust's total capital. The following table summarizes the Trust's equity in earnings from each of the private investment companies during the three and nine months ended September 30, 2020 and 2019: Three months ended September 30, 2020 and 2019 Three Months Ended September, 2020 Three Months Ended September, 2019 Trading Realized Change in Unrealized Net Income Trading Realized Change in Unrealized Net Income Commissions Gain/(Loss) Gain/(Loss) (Loss) Commissions Gain/(Loss) Gain/(Loss) (Loss) Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (8,130 ) $ (813,198 ) $ 109,718 $ (711,610 ) $ (196,670 ) $ 2,747,191 $ (1,491,935 ) $ 1,058,586 Galaxy Plus Fund - Doherty Feeder Fund (528) LLC - - (447 ) (447 ) (8,166 ) (13,867 ) 84,283 62,250 Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC - - (11,450 ) (11,450 ) (90,647 ) 4,938,413 (6,160,328 ) (1,312,562 ) Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC (6,896 ) (5,199 ) (51,941 ) (64,036 ) (36,346 ) 848,094 (336,236 ) 475,512 Galaxy Plus Fund - LRR Feeder Fund (522) LLC (306 ) 40,222 (86,248 ) (46,332 ) - - 30,202 30,202 Galaxy Plus Fund - QIM Feeder Fund (526) LLC (980 ) (235,964 ) 59,500 (177,444 ) (44,377 ) (129,980 ) (114,542 ) (288,899 ) Galaxy Plus Fund - Quantmetrics Feeder Fund (527) LLC - - - - - - (3,220 ) (3,220 ) Galaxy Plus Fund - Quest Feeder Fund (517) LLC (5,945 ) (46,444 ) 35,561 (16,828 ) (11,760 ) 95,455 (153,337 ) (69,642 ) Galaxy Plus Fund - Quest FIT Feeder Fund (535) LLC - - (80,092 ) (80,092 ) - - - - Galaxy Plus Fund - TT Feeder Fund (531) LLC - - (3,765 ) (3,765 ) (26,807 ) 317,027 (159,354 ) 130,866 Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (22,934 ) 236,216 (122,312 ) 90,970 (87,340 ) 1,686,080 (834,730 ) 764,010 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) (2,283 ) (708,548 ) (322,966 ) (1,033,797 ) - - - - Total (47,474 ) $ (1,532,915 ) $ (474,442 ) $ (2,054,831 ) $ (502,113 ) $ 10,488,413 $ (9,139,197 ) $ 847,103 Nine months ended September 30, 2020 and 2019 Nine Months Ended September, 2020 Nine Months Ended September, 2019 Trading Realized Change in Unrealized Net Income Trading Realized Change in Unrealized Net Commissions Gain/(Loss) Gain/(Loss) (Loss) Commissions Gain/(Loss) Gain/(Loss) Income Galaxy Plus Fund - Aspect Feeder Fund (532) LLC $ (29,821 ) $ (771,155 ) $ (19,372 ) $ (820,348 ) $ (465,857 ) $ 5,447,312 $ (914,542 ) $ 4,066,913 Galaxy Plus Fund - Doherty Feeder Fund (528) LLC (3,500 ) (95,347 ) 41,225 (57,622 ) (40,134 ) 60,251 (43,518 ) (23,401 ) Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC (13,005 ) (1,475,050 ) 164,351 (1,323,704 ) (492,581 ) 2,466,705 (5,886,966 ) (3,912,842 ) Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC (34,000 ) (531,301 ) 217,203 (348,098 ) (76,080 ) 2,951,928 (468,197 ) 2,407,651 Galaxy Plus Fund - LRR Feeder Fund (522) LLC (1,789 ) (453,267 ) (136,072 ) (591,128 ) - - 604,541 604,541 Galaxy Plus Fund - QIM Feeder Fund (526) LLC (13,376 ) (1,148,018 ) 156,838 (1,004,556 ) (129,574 ) (1,640,024 ) 184,551 (1,585,047 ) Galaxy Plus Fund - Quantmetrics Feeder Fund (527) LLC - - - - (38,565 ) 34,869 (131,955 ) (135,651 ) Galaxy Plus Fund - Quest Feeder Fund (517) LLC (9,160 ) 63,905 (13,198 ) 41,547 (26,494 ) 186,607 (112,356 ) 47,757 Galaxy Plus Fund - Quest FIT Feeder Fund (535) LLC - - (80,092 ) (80,092 ) - - (80,033 ) (80,033 ) Galaxy Plus Fund - TT Feeder Fund (531) LLC (7,243 ) (321,982 ) (47,177 ) (376,402 ) (110,171 ) 791,527 (315,802 ) 365,554 Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (54,483 ) 1,758,472 (443,728 ) 1,260,261 (292,530 ) 3,986,110 (1,534,853 ) 2,158,727 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) (2,283 ) (708,548 ) (322,966 ) (1,033,797 ) - - - - Total $ (168,660 ) $ (3,682,291 ) $ (482,988 ) $ (4,333,939 ) $ (1,671,986 ) $ 14,285,285 $ (8,699,130 ) $ 3,914,169 The Trust's investments in private investment companies have certain redemption and liquidity restrictions which are described in the following table: Redemptions Redemptions Liquidity Notice Period Permitted Restrictions Frontier Funds Multi-Strategy Galaxy Plus Fund - LRR Feeder Fund (522) LLC 24 hours Daily None Galaxy Plus Fund - JL Cyril Systematic Feeder Fund (547) LLC) 24 hours Daily None Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC 24 hours Daily None Trend Following Galaxy Plus Fund - Aspect Feeder Fund (532) LLC 24 hours Daily None Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC 24 hours Daily None Galaxy Plus Fund - QIM Feeder Fund (526) LLC 24 hours Daily None Galaxy Plus Fund - Quest Feeder Fund (517) LLC 24 hours Daily None Effective July 20, 2020, Doherty Advisors, LLC accessed through Galaxy Plus Fund – Doherty Feeder Fund (528) LLC ceased to act as a commodity trading advisor to the Trust. Effective August 1, 2020, John Locke Investments SA accessed through Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC became a new commodity trading advisor for Frontier Diversified Fund, Frontier Balanced Fund, Frontier Select Fund and Frontier Masters Fund.

Transactions with Affiliates

Transactions with Affiliates	9 Months Ended
	Sep. 30, 2020
The Series of Frontier Funds [Member]
Transactions with Affiliates	6. Transactions with Affiliates The Managing Owner contributes funds to the Trust, with respect to the Series, in order to have a 1% interest ("Minimum Purchase Commitment") in the aggregate capital, profits and losses of all Series and in return will receive units designated as general units in the Series in which the Managing Owner invests such funds. The general units may only be purchased by the Managing Owner and may be subject to no management fees or management fees at reduced rates. Otherwise, the general units hold the same rights as the limited units. The Managing Owner will make contributions to the Series of the Trust necessary to maintain at least a 1% interest in the aggregate capital, profits and losses of the combined Series of the Trust. Such contribution was made by the Managing Owner before trading commenced for the Trust and will be maintained throughout the existence of the Trust, and the Managing Owner will make such purchases as are necessary to effect this requirement. Additionally, the Managing Owner agreed with certain regulatory bodies to maintain a 1% interest specifically in the Frontier Balanced Fund Class 1AP and 2a Units, aggregated, and each of the Frontier Long/Short Commodity Fund, Frontier Diversified Fund and Frontier Masters Fund. The 1% interest in these specific Series is included in computing the Minimum Purchase Commitment in aggregate capital. In addition to the general units the Managing Owner receives in respect of its Minimum Purchase Commitment, the Managing Owner may purchase limited units in any Series as a Limited Owner. Principals of the Managing Owner or affiliates are allowed to own beneficial interests in the Trust, with respect to the Series, as well. All Units purchased by the Managing Owner are held for investment purposes only and not for resale. The Managing Owner may make purchases or redemptions at any time on the same terms as any Limited Owner. The Trust has and will continue to have certain relationships with the Managing Owner and its affiliates. Expenses Management Fees— As of the date of this report, for a Series that has invested in a swap, a Trading Advisor does not receive any management fees directly from the Series for such swap, and instead the relevant Trading Advisor receives compensation via the fees embedded in the swap. As of September 30, 2020 and December 31, 2019, the management fee embedded in (i) swaps owned by Frontier Diversified Fund was 1.00% per annum, (ii) swaps owned by Frontier Balanced Fund was 1.00% per annum, (iii) swaps owned by Frontier Long/Short Commodity Fund was 1.50% per annum, and (iv) swaps owned by Frontier Select Fund was 1.00% per annum, and the Managing Owner has waived the entire management fee due to it from those Series in respect of such Series' investment in swaps. In each case, the embedded management fee was accrued on the relevant notional amount of the swap. The management fee as a percentage of the applicable Series' notional assets will be greater than the percentage of the applicable Series' net asset value to the extent that the notional assets of the Series exceeds its net asset value. The Managing Owner expects that the notional assets of each Series will generally be maintained at a level in excess of the net asset value of such Series and such excess may be substantial to the extent the Managing Owner deems necessary to achieve the desired level of volatility. Trading Fees— Incentive Fees— Service Fees— The Managing Owner has determined that the purchase of additional units of the relevant series will commence in 2020. As such, the Managing Owner has calculated the amounts for additional units of the relevant series which will be purchased and classified such amounts as Subscriptions in advance for service fee rebates of $22,650, $409, $31,725, $341,603, $19,010, $153,743 and $61,853 for the Frontier Diversified, Long/Short Commodity, Masters, Balanced, Select, Global and Heritage Funds, respectively. The following table summarizes fees earned by the Managing Owner for the three and nine months ended September 30, 2020 and 2019, respectively. Three Months Ended September 30, 2020 Incentive (Rebate) Fees Management Fee Service Fee Trading Fee Frontier Diversified Fund $ - $ - $ 2,062 $ 50,536 Frontier Masters Fund - - 407 21,879 Frontier Long/Short Commodity Fund - - 108 7,777 Frontier Balanced Fund - 5,029 73,754 127,677 Frontier Select Fund - - 13,025 10,391 Frontier Global Fund - - 22,977 42,481 Frontier Heritage Fund - - 15,845 25,094 Three Months Ended September 30, 2019 Incentive (Rebate) Fees Management Fee Service Fee Trading Fee Frontier Diversified Fund $ - - $ 11,313 $ 126,165 Frontier Masters Fund - - 1,256 49,626 Frontier Long/Short Commodity Fund - - 134 14,443 Frontier Balanced Fund - 4,614 145,900 236,156 Frontier Select Fund - - 27,710 21,767 Frontier Global Fund - - 45,272 82,029 Frontier Heritage Fund - - 22,197 31,932 Nine Months Ended September 30, 2020 Incentive (Rebate) Fees Management Fee Service Fee Trading Fee Frontier Diversified Fund $ - $ - $ 12,712 $ 208,221 Frontier Masters Fund - - 1,501 83,524 Frontier Long/Short Commodity Fund - - 330 25,089 Frontier Balanced Fund - 14,753 284,736 465,170 Frontier Select Fund - - 51,117 42,791 Frontier Global Fund - - 81,204 150,154 Frontier Heritage Fund - - 51,802 83,036 Nine Months Ended September 30, 2019 Incentive (Rebate) Fees Management Fee Service Fee Trading Fee Frontier Diversified Fund $ - $ 2,668 $ 34,708 $ 382,495 Frontier Masters Fund - 7,665 11,010 175,662 Frontier Long/Short Commodity Fund - - 448 42,660 Frontier Balanced Fund - 17,979 470,826 763,616 Frontier Select Fund - - 79,777 66,874 Frontier Global Fund - 38,679 140,174 207,342 Frontier Heritage Fund - 7,289 66,095 88,678 The following table summarizes fees payable to the Managing Owner as of September 30, 2020 and December 31, 2019. As of September 30, 2020 Incentive Fees Management Fees Interest Fees Service Fees Trading Fees Frontier Diversified Fund $ - $ - $ - $ 632 $ 16,686 Frontier Masters Fund - - - 125 7,360 Frontier Long/Short Commodity Fund - - 44 - 2,699 Frontier Balanced Fund - 8,903 361 20,578 41,480 Frontier Select Fund - - 458 3,701 4,088 Frontier Global Fund - - 230 6,769 13,063 Frontier Heritage Fund - - 326 4,544 7,568 As of December 31, 2019 Incentive Fees Management Fees Interest Fees Service Fees Trading Fees Frontier Diversified Fund $ - $ - $ - $ 3,391 $ 35,877 Frontier Masters Fund - - - 204 11,673 Frontier Long/Short Commodity Fund - - - - 3,468 Frontier Balanced Fund - 8,795 105 41,635 70,179 Frontier Select Fund - - - 6,906 6,000 Frontier Global Fund - - 56 11,263 22,540 Frontier Heritage Fund - - 166 5,362 11,170 With respect to the service fees, the initial service fee (for the first 12 months) relating to a purchase of Units by an investor is prepaid by the Managing Owner to the relevant selling agent in the month following such purchase and is reimbursed therefore by the Series monthly in arrears in an amount based upon a corresponding percentage of NAV, calculated daily. Consequently, the Managing Owner bears the risk and the benefit of the upside potential of any difference between the amount of the initial service fee prepaid by it and the amount of the reimbursement thereof, which may result from variations in NAV over the following 12 months. For the nine months ended September 30, 2020 and 2019, amounts received or receivable from the Managing Owner for the difference in monthly service fees from the prepaid initial service fees were $0 and $0, respectively. Aggregate interest income from all sources, including U.S. Treasury Securities assets net of premiums and cash held at clearing brokers, of up to the first 2% (annualized) of average net assets less any fair market value related to swaps is paid to the Managing Owner by the Frontier Balanced Fund (Class 1 and Class 2), Frontier Long/Short Commodity Fund (Class 2 and Class 3), Frontier Global Fund, Frontier Select Fund, and Frontier Heritage Fund. For the Frontier Diversified Fund, Frontier Long/Short Commodity Fund (Class 1a, Class 2a and Class 3a), Frontier Masters Fund, and Frontier Balanced Fund (Class 1AP, Class 2a and Class 3a), 100% of the interest is retained by the respective Series. The following table outlines the interest paid by each series to the Managing owner and its ratio to average net assets for the three and nine months ended September 30, 2020 and 2019. Three Months ended September 30, 2020 and 2019 September 30, September 30, September 30, September 30, Gross Amount Gross Amount Ratio to Average Net Assets Ratio to Average Net Assets Frontier Diversified Fund Class 1 $ - $ - 0.00 % 0.00 % Frontier Diversified Fund Class 2 - - 0.00 % 0.00 % Frontier Diversified Fund Class 3 - - 0.00 % 0.00 % Frontier Masters Fund Class 1 - - 0.00 % 0.00 % Frontier Masters Fund Class 2 - - 0.00 % 0.00 % Frontier Masters Fund Class 3 - - 0.00 % 0.00 % Frontier Long/Short Commodity Fund Class 2 6 5 0.02 % 0.01 % Frontier Long/Short Commodity Fund Class 3 158 129 0.02 % 0.01 % Frontier Long/Short Commodity Fund Class 1a - - 0.00 % 0.00 % Frontier Long/Short Commodity Fund Class 2a - - 0.00 % 0.00 % Frontier Long/Short Commodity Fund Class 3a - - 0.00 % 0.00 % Frontier Balanced Fund Class 1 1,019 877 0.01 % 0.00 % Frontier Balanced Fund Class 1AP 16 17 0.01 % 0.00 % Frontier Balanced Fund Class 2 215 178 0.01 % 0.00 % Frontier Balanced Fund Class 2a 2 2 0.00 % 0.00 % Frontier Balanced Fund Class 3a 11 8 0.00 % 0.00 % Frontier Select Fund Class 1 1,349 2,364 0.08 % 0.06 % Frontier Select Fund Class 1AP 8 8 0.08 % 0.06 % Frontier Select Fund Class 2 54 73 0.08 % 0.06 % Frontier Global Fund Class 1 901 1,236 0.03 % 0.02 % Frontier Global Fund Class 1AP 9 8 0.03 % 0.02 % Frontier Global Fund Class 2 57 87 0.03 % 0.02 % Frontier Heritage Fund Class 1 1,151 1,457 0.05 % 0.05 % Frontier Heritage Fund Class 1AP 4 5 0.05 % 0.05 % Frontier Heritage Fund Class 2 235 322 0.06 % 0.05 % $ 5,196 $ 6,776 Nine months ended September 30, 2020 and 2019 September 30, September 30, September 30, September 30, Gross Amount Gross Amount Ratio to Average Net Assets Ratio to Average Net Assets Frontier Diversified Fund Class 1 $ - $ - 0.00 % 0.00 % Frontier Diversified Fund Class 2 - - 0.00 % 0.00 % Frontier Diversified Fund Class 3 - - 0.00 % 0.00 % Frontier Masters Fund Class 1 - - 0.00 % 0.00 % Frontier Masters Fund Class 2 - - 0.00 % 0.00 % Frontier Masters Fund Class 3 - - 0.00 % 0.00 % Frontier Long/Short Commodity Fund Class 2 14 14 0.04 % 0.02 % Frontier Long/Short Commodity Fund Class 3 354 337 0.04 % 0.02 % Frontier Long/Short Commodity Fund Class 1a - - 0.00 % 0.00 % Frontier Long/Short Commodity Fund Class 2a - - 0.00 % 0.00 % Frontier Long/Short Commodity Fund Class 3a - - 0.00 % 0.00 % Frontier Balanced Fund Class 1 5,419 3,758 0.04 % 0.02 % Frontier Balanced Fund Class 1AP 79 62 0.04 % 0.02 % Frontier Balanced Fund Class 2 1,074 733 0.04 % 0.02 % Frontier Balanced Fund Class 2a 12 9 0.01 % 0.00 % Frontier Balanced Fund Class 3a 58 31 0.01 % 0.00 % Frontier Select Fund Class 1 3,081 4,623 0.14 % 0.13 % Frontier Select Fund Class 1AP 15 11 0.14 % 0.16 % Frontier Select Fund Class 2 112 144 0.14 % 0.13 % Frontier Global Fund Class 1 2,649 23,596 0.07 % 0.38 % Frontier Global Fund Class 1AP 24 113 0.07 % 0.32 % Frontier Global Fund Class 2 208 1,373 0.07 % 0.34 % Frontier Heritage Fund Class 1 2,800 4,881 0.12 % 0.17 % Frontier Heritage Fund Class 1AP 11 8 0.12 % 0.16 % Frontier Heritage Fund Class 2 623 991 0.12 % 0.16 % $ 16,533 $ 40,684
Frontier Funds [Member]
Transactions with Affiliates	6. Transactions with Affiliates The Managing Owner contributes funds to the Trust in order to have a 1% interest in the aggregate capital, profits and losses and in return will receive units designated as general units in the Series of the Trust in which the Managing Owner invests such funds. The general units may only be purchased by the Managing Owner and may be subject to no advisory fees or management advisory fees at reduced rates. Otherwise, the general units hold the same rights as the limited units. The Managing Owner is required to maintain at least a 1% interest ("Minimum Purchase Commitment") in the aggregate capital, profits and losses of the Trust so long as it is acting as the Managing Owner of the Trust. Such contribution was made by the Managing Owner before trading commenced for the Trust and will be maintained throughout the existence of the Trust, and the Managing Owner will make such purchases as are necessary to effect this requirement. Additionally, the Managing Owner agreed with certain regulatory bodies to maintain a 1% interest specifically in the Frontier Balanced Fund Class 1AP Units and Frontier Balanced Fund Class 2a Units, aggregated, and each of the Frontier Long/Short Commodity Fund, Frontier Diversified Fund, and Frontier Masters Fund. The 1% interest in these specific Series of the Trust is included in computing the Minimum Purchase Commitment in aggregate capital. In addition to the general units the Managing Owner receives in respect of its Minimum Purchase Commitment, the Managing Owner may purchase limited units in any Series as a Limited Owner. Principals of the Managing Owner or affiliates are allowed to own beneficial interests in the Trust, as well. All units purchased by the Managing Owner are held for investment purposes only and not for resale. The Managing Owner may make purchases or redemptions at any time on the same terms as any Limited Owner. The Trust has and will continue to have certain relationships with the Managing Owner and its affiliates. Expenses Management Fees— The management fee as a percentage of the applicable Series' notional assets will be greater than the percentage of the applicable Series' net asset value to the extent that the notional assets of the Series exceeds its net asset value. The Managing Owner expects that the notional assets of each Series will generally be maintained at a level in excess of the net asset value of such Series and such excess may be substantial to the extent the Managing Owner deems necessary to achieve the desired level of volatility. Trading Fees— Incentive Fees— Service Fees— As of September 30, 2020, the Trust had a payable to the Managing Owner in the amounts of $0, $8,903, $1,419, $92,944, and $36,349 for incentive fees, management fees, interest, trading fees, and service fees, respectively. As of December 31, 2019, the Trust had a payable to the Managing Owner in the amounts of $0, $8,795, $327, $160,907, and $68,762 for incentive fees, management fees, interest, trading fees, and service fees, respectively. For the nine months ended September 30, 2020, the Managing Owner earned $0, $14,753, $4,426, $483,402 and $1,057,985 for incentive fees, management fees, risk analysis fees, service fees, and trading fees, respectively. For the nine months ended September 30, 2019, the Managing Owner earned $0, $74,280, $4,257, $803,038, and $1,727,327 for incentive fees, management fees, risk analysis fees, service fees, and trading fees, respectively. For the three months ended September 30, 2020, Managing Owner earned $0, $5,029, $1,509, $128,178 and $285,835 for incentive fees, management fees, risk analysis fees, service fees, and trading fees, respectively. For the three months ended September 30, 2019, the Managing Owner earned $0, $4,614, $1,385, $253,782 and $562,118 for incentive fees, management fees, risk analysis fees, service fees, and trading fees, respectively. With respect to the service fees, the initial service fee (for the first 12 months) relating to a purchase of Units by an investor is prepaid by the Managing Owner to the relevant selling agent in the month following such purchase and is reimbursed therefore by the Series monthly in arrears in an amount based upon a corresponding percentage of NAV, calculated daily. Consequently, the Managing Owner bears the risk and enjoys the benefit of the upside potential of any difference between the amount of the initial service fee prepaid by it and the amount of the reimbursement thereof, which may result from variations in NAV over the following 12 months. For the three months ended September 30, 2020 and September 30, 2019, amounts received or receivable from the Managing Owner for the difference in monthly service fees from the prepaid initial service fees were $0 and $0, respectively. Aggregate interest income from all sources, including U.S. Treasury Securities assets net of premiums and cash held at clearing brokers, of up to the first 2% (annualized) is paid to the Managing Owner by the Frontier Balanced Fund (Class 1 and Class 2 only), Frontier Long/Short Commodity Fund (Class 2 and Class 3), Frontier Global Fund, Frontier Select Fund, and Frontier Heritage Fund. For the Frontier Diversified Fund, Frontier Long/Short Commodity Fund (for the three months ended September 30, 2020, and September 30, 2019 amounts received or receivable from the Managing Owner for the difference in monthly service fees from the prepaid initial service fees Class 1a, Class 2a and Class 3a), Frontier Masters Fund, and Frontier Balanced Fund (Class 1AP, Class 2a and Class 3a), 100% of the interest is retained by the respective Series. During the three months ended September 30, 2020 and September 30, 2019 and, the Trust paid $5,196, and $6,766, respectively of such interest income to the Managing Owner. Such amounts are not included in the consolidated statements of operations of the Trust. All other interest income is recorded by the Trust on the consolidated statements of operations.

Financial Highlights

Financial Highlights	9 Months Ended
	Sep. 30, 2020
The Series of Frontier Funds [Member]
Financial Highlights	7. Financial Highlights The following information presents the financial highlights of the Series, for the three and nine months ended September 30, 2020 and 2019. This data has been derived from the information presented in the financial statements. For the three months ended September 30, 2020 Frontier Diversified Fund Frontier Masters Fund Frontier Long/Short Commodity Fund Class 1 Class 2 Class 3 Class 1 Class 2 Class 3 Class 1a Class 2 Class 2a Class 3 Class 3a Per unit operating performance (1) Net asset value, June 30, 2020 $ 74.09 $ 89.88 $ 84.09 $ 61.92 $ 75.13 $ 70.56 $ 44.58 $ 83.27 $ 53.49 $ 87.35 $ 56.38 Net operating results: Interest income 0.01 0.02 0.02 0.03 0.04 0.04 0.03 0.06 0.04 0.06 0.04 Expenses (1.46 ) (0.76 ) (0.71 ) (3.18 ) (1.05 ) (1.00 ) (0.69 ) (0.50 ) (0.32 ) (0.52 ) (0.34 ) Net gain/(loss) on investments, net of non-controlling interests (6.17 ) (8.14 ) (7.57 ) (6.62 ) (10.57 ) (9.87 ) (43.93 ) (1.42 ) (0.82 ) (1.49 ) (0.82 ) Net income/(loss) (7.61 ) (8.88 ) (8.26 ) (9.77 ) (11.58 ) (10.83 ) (44.58 ) (1.86 ) (1.11 ) (1.95 ) (1.12 ) Net asset value, September 30, 2020 $ 66.48 $ 81.00 $ 75.83 $ 52.15 $ 63.55 $ 59.73 $ 0.00 * $ 81.41 $ 52.39 $ 85.40 $ 55.27 Ratios to average net assets Net investment income/(loss) -8.16 % -3.45 % -3.45 % -21.78 % -5.83 % -5.83 % -6.06 % -2.17 % -2.17 % -2.17 % -2.17 % Expenses before incentive fees (3)(4) 8.24 % 3.53 % 3.53 % 22.02 % 6.06 % 6.06 % 6.34 % 2.45 % 2.45 % 2.45 % 2.45 % Expenses after incentive fees (3)(4) 8.24 % 3.53 % 3.53 % 22.02 % 6.06 % 6.06 % 6.34 % 2.45 % 2.45 % 2.45 % 2.45 % Total return before incentive fees (2) -10.28 % -9.88 % -9.83 % -15.78 % -15.41 % -15.35 % -2.46 % -2.23 % -2.07 % -2.23 % -1.98 % Total return after incentive fees (2) -10.28 % -9.88 % -9.83 % -15.78 % -15.41 % -15.35 % -2.46 % -2.23 % -2.07 % -2.23 % -1.98 % Incentive fee per share - - - - - - - - - - - Incentive Fee to ANA 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % Frontier Balanced Fund Frontier Select Fund Class 1 Class 1AP Class 2 Class 2a Class 3a Class 1 Class 1AP Class 2 Per unit operating performance (1) Net asset value, June 30, 2020 $ 78.59 $ 93.76 $ 126.44 $ 109.61 $ 109.24 $ 61.04 $ 72.91 $ 96.75 Net operating results: Interest income 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 Expenses (1.39 ) (0.97 ) (20.94 ) (1.13 ) (1.13 ) (0.78 ) (0.41 ) (0.54 ) Net gain/(loss) on investments, net of non-controlling interests (5.38 ) (6.46 ) 10.92 (7.58 ) (7.51 ) (6.91 ) (8.30 ) (11.01 ) Net income/(loss) (6.77 ) (7.42 ) (10.02 ) (8.71 ) (8.64 ) (7.69 ) (8.70 ) (11.55 ) Net asset value, September 30, 2020 $ 71.82 $ 86.34 $ 116.42 $ 100.90 $ 100.60 $ 53.35 $ 64.20 $ 85.20 Ratios to average net assets Net investment income/(loss) -7.30 % -4.27 % -4.27 % -4.27 % -4.27 % -5.35 % -2.32 % -2.32 % Expenses before incentive fees (3)(4) 7.31 % 4.27 % 4.27 % 4.27 % 4.27 % 5.35 % 2.32 % 2.32 % Expenses after incentive fees (3)(4) 7.31 % 4.27 % 4.27 % 4.27 % 4.27 % 5.35 % 2.32 % 2.32 % Total return before incentive fees (2) -8.61 % -7.92 % -7.92 % -7.95 % -7.91 % -12.60 % -11.93 % -11.93 % Total return after incentive fees (2) -8.61 % -7.92 % -7.92 % -7.95 % -7.91 % -12.60 % -11.93 % -11.93 % Incentive fee per share - - - - - - - - Incentive Fee to ANA 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % Frontier Global Fund Frontier Heritage Fund Class 1 Class 1AP Class 2 Class 1 Class 1AP Class 2 Per unit operating performance (1) Net asset value, June 30, 2020 $ 121.68 $ 145.35 $ 181.09 $ 96.51 $ 115.25 $ 154.24 Net operating results: Interest income 0.00 0.00 0.00 0.00 0.00 0.00 Expenses (2.33 ) (1.77 ) (2.20 ) (1.62 ) (1.10 ) (1.49 ) Net gain/(loss) on investments, net of non-controlling interests (15.17 ) (18.19 ) (22.67 ) (8.01 ) (9.62 ) (12.85 ) Net income/(loss) (17.50 ) (19.96 ) (24.87 ) (9.63 ) (10.72 ) (14.34 ) Net asset value, September 30, 2020 $ 104.18 $ 125.39 $ 156.22 $ 86.88 $ 104.53 $ 139.90 Ratios to average net assets Net investment income/(loss) -8.26 % -5.23 % -5.23 % -7.04 % -4.01 % -4.01 % Expenses before incentive fees (3)(4) 8.26 % 5.23 % 5.23 % 7.04 % 4.01 % 4.01 % Expenses after incentive fees (3)(4) 8.26 % 5.23 % 5.23 % 7.04 % 4.01 % 4.01 % Total return before incentive fees (2) -14.38 % -13.73 % -13.74 % -9.98 % -9.30 % -9.29 % Total return after incentive fees (2) -14.38 % -13.73 % -13.74 % -9.98 % -9.30 % -9.29 % Incentive fee per share - - - - - - Incentive Fee to ANA 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % (1) Interest income and expenses per unit are calculated by dividing these amounts by the average number of units outstanding during the period. The net gain/(loss) on investments, net of non-controlling interests is a balancing amount necessary to reconcile the change in net asset value per unit with the other per unit information. (2) Impact of incentive fee computed using average net assets, otherwise computed using average units outstanding during the period prior to the effects of any non-controlling transactions. An owner's total returns may vary from the above returns based on the timing of contributions and withdrawals. Total returns are not annualized. (3) Expense ratios do not reflect interest allocated to the Managing Owner as such expenses are not included in the Statements of Operations of the Series, see footnote 6. (4) Expense ratios do not include management and incentive fees at the Galaxy Plus entities. The ratios would have been higher had those expenses been included. The impact of those fees is included in the total return. * Class 1a of Frontier Long/Short Commodity Fund was liquidated as of September 30, 2020. For the three months ended September 30, 2019 Frontier Diversified Fund Frontier Masters Fund Frontier Long/Short Commodity Fund Class 1 Class 2 Class 3 Class 1 Class 2 Class 3 Class 1a Class 2 Class 2a Class 3 Class 3a Per unit operating performance (1) Net asset value, June 30, 2019 $ 102.44 $ 122.11 $ 113.96 $ 87.33 $ 104.1 $ 97.53 $ 52.86 $ 98.52 $ 62.24 $ 103.34 $ 65.45 Net operating results: Interest income 0.01 0.01 0.01 0.05 0.06 0.06 0.02 0.03 0.02 0.03 0.02 Expenses (1.69 ) (1.12 ) (1.05 ) (1.53 ) (1.37 ) (1.28 ) (0.76 ) (0.66 ) (0.42 ) (0.69 ) (0.45 ) Net gain/(loss) on investments, net of non-controlling interests 1.96 1.98 1.91 (1.12 ) (1.04 ) (0.91 ) (4.53 ) (9.13 ) (5.54 ) (9.52 ) (5.78 ) Net income/(loss) 0.28 0.87 0.88 (2.60 ) (2.35 ) (2.14 ) (5.30 ) (9.76 ) (5.94 ) (10.18 ) (6.21 ) Net asset value, September 30, 2019 $ 102.72 $ 122.98 $ 114.84 $ 84.73 $ 101.75 $ 95.39 $ 47.56 $ 88.76 $ 56.3 $ 93.16 $ 59.24 Ratios to average net assets Net investment income/(loss) -6.57 % -3.64 % -3.64 % -6.61 % -4.94 % -4.94 % -5.71 % -2.57 % -2.57 % -2.57 % -2.57 % Expenses before incentive fees (3)(4) 6.62 % 3.69 % 3.69 % 6.84 % 5.17 % 5.17 % 5.84 % 2.7 % 2.7 % 2.7 % 2.7 % Expenses after incentive fees (3)(4) 6.62 % 3.69 % 3.69 % 6.84 % 5.17 % 5.17 % 5.84 % 2.7 % 2.7 % 2.7 % 2.7 % Total return before incentive fees (2) 0.27 % 0.71 % 0.76 % -2.97 % -2.26 % -2.19 % -9.99 % -9.91 % -9.54 % -9.85 % -9.49 % Total return after incentive fees (2) 0.27 % 0.71 % 0.76 % -2.97 % -2.26 % -2.19 % -9.99 % -9.91 % -9.54 % -9.85 % -9.49 % Frontier Balanced Fund Frontier Select Fund Class 1 Class 1AP Class 2 Class 2a Class 3a Class 1 Class 1AP Class 2 Per unit operating performance (1) Net asset value, June 30, 2019 $ 116.36 $ 134.69 $ 181.66 $ 157.49 $ 156.91 $ 76.03 $ 88.34 $ 116.96 Net operating results: Interest income 0.05 0.06 0.08 0.07 0.07 (0.00 ) 0 (0.00 ) Expenses (1.90 ) (1.24 ) (1.67 ) (1.45 ) (1.44 ) (1.01 ) (0.51 ) (0.67 ) Net gain/(loss) on investments, net of non-controlling interests 2.18 2.59 3.49 2.96 3.01 2.74 3.2 4.23 Net income/(loss) 0.33 1.41 1.9 1.58 1.64 1.73 2.69 3.56 Net asset value, September 30, 2019 $ 116.69 $ 136.1 $ 183.56 $ 159.07 $ 158.55 $ 77.76 $ 91.03 $ 120.52 Ratios to average net assets Net investment income/(loss) -6.29 % -3.48 % -3.48 % -3.48 % -3.48 % -5.45 % -2.36 % -2.36 % Expenses before incentive fees (3)(4) 6.47 % 3.66 % 3.66 % 3.66 % 3.66 % 5.45 % 2.36 % 2.36 % Expenses after incentive fees (3)(4) 6.47 % 3.66 % 3.66 % 3.66 % 3.66 % 5.45 % 2.36 % 2.36 % Total return before incentive fees (2) 0.28 % 1.05 % 1.05 % 1 % 1.05 % 2.28 % 3.05 % 3.04 % Total return after incentive fees (2) 0.28 % 1.05 % 1.05 % 1 % 1.05 % 2.28 % 3.05 % 3.04 % Frontier Global Fund Frontier Heritage Fund Class 1 Class 1AP Class 2 Class 1 Class 1AP Class 2 Per unit operating performance (1) Net asset value, June 30, 2019 $ 143.64 $ 166.13 $ 207.48 $ 109.6 $ 126.34 $ 169.96 Net operating results: Interest income (0.00 ) (0.00 ) (0.00 ) (0.00 ) 0 (0.00 ) Expenses (2.98 ) (2.16 ) (2.69 ) (1.81 ) (1.16 ) (1.51 ) Net gain/(loss) on investments, net of non-controlling interests 11.36 13.19 16.41 5.14 5.98 8.03 Net income/(loss) 8.38 11.03 13.72 3.33 4.82 6.52 Net asset value, September 30, 2019 $ 152.02 $ 177.16 $ 221.2 $ 112.93 $ 131.16 $ 176.48 Ratios to average net assets Net investment income/(loss) -8.43 % -5.29 % -5.29 % -6.96 % -3.77 % -3.77 % Expenses before incentive fees (3)(4) 8.43 % 5.29 % 5.29 % 6.96 % 3.77 % 3.77 % Expenses after incentive fees (3)(4) 8.43 % 5.29 % 5.29 % 6.96 % 3.77 % 3.77 % Total return before incentive fees (2) 5.84 % 6.64 % 6.61 % 3.04 % 3.82 % 3.84 % Total return after incentive fees (2) 5.84 % 6.64 % 6.61 % 3.04 % 3.82 % 3.84 % (1) Interest income and expenses per unit are calculated by dividing these amounts by the average number of units outstanding during the period. The net gain/(loss) on investments, net of non-controlling interests is a balancing amount necessary to reconcile the change in net asset value per unit with the other per unit information. (2) Impact of incentive fee computed using average net assets, otherwise computed using average units outstanding during the period prior to the effects of any non-controlling transactions. An owner's total returns may vary from the above returns based on the timing of contributions and withdrawals. Total returns are not annualized. (3) Expense ratios do not reflect interest allocated to the Managing Owner as such expenses are not included in the Statements of Operations of the Series, see footnote 6. (4) Expense ratios do not include management and incentive fees at the Galaxy Plus entities. The ratios would have been higher had those expenses been included. The impact of those fees is included in the total return. For the nine months ended September 30, 2020 Frontier Diversified Fund Frontier Masters Fund Frontier Long/Short Commodity Fund Class 1 Class 2 Class 3 Class 1 Class 2 Class 3 Class 1a Class 2 Class 2a Class 3 Class 3a Per unit operating performance (1) Net asset value, December 31, 2019 $ 101.10 $ 121.58 $ 113.61 $ 72.28 $ 87.18 $ 81.78 $ 44.20 $ 81.60 $ 52.55 $ 85.64 $ 55.31 Net operating results: Interest income 0.02 0.03 0.02 0.08 0.10 0.10 0.07 0.13 0.08 0.13 0.09 Expenses (4.88 ) (2.82 ) (2.50 ) (11.57 ) (3.75 ) (3.52 ) (2.13 ) (1.59 ) (1.02 ) (1.67 ) (1.08 ) Net gain/(loss) on investments, net of non-controlling interests (29.76 ) (37.79 ) (35.30 ) (8.64 ) (19.99 ) (18.63 ) (42.14 ) 1.27 0.78 1.30 0.94 Net income/(loss) (34.62 ) (40.58 ) (37.78 ) (20.13 ) (23.63 ) (22.05 ) (44.20 )* (0.19 ) (0.17 ) (0.24 ) (0.05 ) Net asset value, September 30, 2020 $ 66.48 $ 81.00 $ 75.83 $ 52.15 $ 63.55 $ 59.73 $ (0.00 )* $ 81.41 $ 52.39 $ 85.40 $ 55.27 Ratios to average net assets Net investment income/(loss) -10.89 % -5.35 % -5.35 % -35.07 % -9.11 % -9.11 % -9.27 % -3.53 % -3.53 % -3.53 % -3.53 % Expenses before incentive fees (3)(4) 10.94 % 5.40 % 5.40 % 35.33 % 9.37 % 9.37 % 9.58 % 3.84 % 3.84 % 3.84 % 3.84 % Expenses after incentive fees (3)(4) 10.94 % 5.40 % 5.40 % 35.33 % 9.37 % 9.37 % 9.58 % 3.84 % 3.84 % 3.84 % 3.84 % Total return before incentive fees (2) -34.25 % -33.38 % -33.25 % -27.85 % -27.11 % -26.97 % -1.62 % * -0.23 % -0.31 % -0.28 % -0.08 % Total return after incentive fees (2) -34.25 % -33.38 % -33.25 % -27.85 % -27.11 % -26.97 % -1.62 % * -0.23 % -0.31 % -0.28 % -0.08 % Incentive fee per share - - - - - - - - - - - Incentive Fee to ANA 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % Frontier Balanced Fund Frontier Select Fund Class 1 Class 1AP Class 2 Class 2a Class 3a Class 1 Class 1AP Class 2 Per unit operating performance (1) Net asset value, December 31, 2019 $ 117.23 $ 137.81 $ 185.82 $ 161.04 $ 160.50 $ 66.56 $ 78.51 $ 103.94 Net operating results: Interest income 0.04 0.04 0.06 0.05 0.05 0.00 0.00 0.00 Expenses (4.79 ) (3.21 ) (4.34 ) (3.79 ) (3.76 ) (2.61 ) (1.37 ) (1.83 ) Net gain/(loss) on investments, net of non-controlling interests (40.66 ) (48.31 ) (65.11 ) (56.40 ) (56.20 ) (10.60 ) (12.93 ) (16.92 ) Net income/(loss) (45.41 ) (51.47 ) (69.40 ) (60.14 ) (59.90 ) (13.21 ) (14.31 ) (18.74 ) Net asset value, September 30, 2020 $ 71.82 $ 86.34 $ 116.42 $ 100.90 $ 100.60 $ 53.35 $ 64.20 $ 85.20 Ratios to average net assets Net investment income/(loss) -10.42 % -5.92 % -5.92 % -5.92 % -5.92 % -8.15 % -3.64 % -3.64 % Expenses before incentive fees (3)(4) 10.50 % 6.00 % 6.00 % 6.00 % 6.00 % 8.15 % 3.64 % 3.64 % Expenses after incentive fees (3)(4) 10.50 % 6.00 % 6.00 % 6.00 % 6.00 % 8.15 % 3.64 % 3.64 % Total return before incentive fees (2) -38.74 % -37.35 % -37.35 % -37.34 % -37.32 % -19.84 % -18.22 % -18.03 % Total return after incentive fees (2) -38.74 % -37.35 % -37.35 % -37.34 % -37.32 % -19.84 % -18.22 % -18.03 % Incentive fee per share - - - - - - - - Incentive Fee to ANA 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % Frontier Global Fund Frontier Heritage Fund Class 1 Class 1AP Class 2 Class 1 Class 1AP Class 2 Per unit operating performance (1) Net asset value, December 31, 2019 $ 131.52 $ 154.43 $ 192.82 $ 97.54 $ 114.15 $ 153.59 Net operating results: Interest income 0.00 0.00 0.00 0.00 0.00 0.00 Expenses (7.81 ) (5.84 ) (7.38 ) (5.22 ) (3.52 ) (4.74 ) Net gain/(loss) on investments, net of non-controlling interests (19.53 ) (23.20 ) (29.22 ) (5.44 ) (6.11 ) (8.95 ) Net income/(loss) (27.34 ) (29.04 ) (36.60 ) (10.65 ) (9.62 ) (13.69 ) Net asset value, September 30, 2020 $ 104.18 $ 125.39 $ 156.22 $ 86.88 $ 104.53 $ 139.90 Ratios to average net assets Net investment income/(loss) -12.20 % -7.68 % -7.68 % -10.42 % -5.90 % -5.90 % Expenses before incentive fees (3)(4) 12.20 % 7.68 % 7.68 % 10.42 % 5.90 % 5.90 % Expenses after incentive fees (3)(4) 12.20 % 7.68 % 7.68 % 10.42 % 5.90 % 5.90 % Total return before incentive fees (2) -20.79 % -18.80 % -18.98 % -10.92 % -8.43 % -8.91 % Total return after incentive fees (2) -20.79 % -18.80 % -18.98 % -10.92 % -8.43 % -8.91 % Incentive fee per share - - - - - - Incentive Fee to ANA 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % (1) Interest income and expenses per unit are calculated by dividing these amounts by the average number of units outstanding during the period. The net gain/(loss) on investments, net of non-controlling interests is a balancing amount necessary to reconcile the change in net asset value per unit with the other per unit information. (2) Impact of incentive fee computed using average net assets, otherwise computed using average units outstanding during the period prior to the effects of any non-controlling transactions. An owner's total returns may vary from the above returns based on the timing of contributions and withdrawals. Total returns are not annualized. (3) Expense ratios do not reflect interest allocated to the Managing Owner as such expenses are not included in the Statements of Operations of the Series, see footnote 6. (4) Expense ratios do not include management and incentive fees at the Galaxy Plus entities. The ratios would have been higher had those expenses been included. The impact of those fees is included in the total return. * Class 1a of Frontier Long/Short Commodity Fund was liquidated as of September 30, 2020. For the nine months ended September 30, 2019 Frontier Diversified Fund Frontier Masters Fund Frontier Long/Short Commodity Fund Class 1 Class 2 Class 3 Class 1 Class 2 Class 3 Class 1a Class 2 Class 2a Class 3 Class 3a Per unit operating performance (1) Net asset value, December 31, 2018 $ 102.25 $ 120.84 $ 112.62 $ 91.1 $ 107.68 $ 100.77 $ 56.8 $ 98.82 $ 66.52 $ 103.66 $ 69.83 Net operating results: Interest income 0.06 0.07 0.06 0.09 0.11 0.1 0.04 0.08 0.05 0.09 0.05 Expenses (5.12 ) (3.35 ) (3.13 ) (5.44 ) (4.68 ) (4.38 ) (2.45 ) (1.92 ) (1.21 ) (2.02 ) (1.28 ) Net gain/(loss) on investments, net of non-controlling interests 5.54 5.42 5.29 (1.02 ) (1.36 ) (1.10 ) (6.83 ) (8.22 ) (9.06 ) (8.56 ) (9.37 ) Net income/(loss) 0.47 2.14 2.22 (6.37 ) (5.93 ) (5.38 ) (9.24 ) (10.06 ) (10.22 ) (10.50 ) (10.59 ) Net asset value, September 30, 2019 $ 102.72 $ 122.98 $ 114.84 $ 84.73 $ 101.75 $ 95.39 $ 47.56 $ 88.76 $ 56.3 $ 93.16 $ 59.24 Ratios to average net assets Net investment income/(loss) -6.65 % -3.63 % -3.63 % -8.37 % -5.87 % -5.87 % -6.35 % -2.58 % -2.58 % -2.58 % -2.58 % Expenses before incentive fees (3)(4) 6.72 % 3.7 % 3.7 % 8.51 % 6.01 % 6.01 % 6.46 % 2.7 % 2.7 % 2.7 % 2.7 % Expenses after incentive fees (3)(4) 6.72 % 3.7 % 3.7 % 8.51 % 6.01 % 6.01 % 6.46 % 2.7 % 2.7 % 2.7 % 2.7 % Total return before incentive fees (2) 0.46 % 1.77 % 1.97 % -6.99 % -5.51 % -5.34 % -16.27 % -10.18 % -15.36 % -10.13 % -15.17 % Total return after incentive fees (2) 0.46 % 1.77 % 1.97 % -6.99 % -5.51 % -5.34 % -16.27 % -10.18 % -15.36 % -10.13 % -15.17 % Frontier Balanced Fund Frontier Select Fund Class 1 Class 1AP Class 2 Class 2a Class 3a Class 1 Class 1AP Class 2 Per unit operating performance (1) Net asset value, December 31, 2018 $ 117.63 $ 134.16 $ 180.94 $ 156.81 $ 156.26 $ 71.41 $ 82.48 $ 108.18 Net operating results: Interest income 0.16 0.18 0.25 0.21 0.21 (0.00 ) 0 (0.00 ) Expenses (6.03 ) (3.97 ) (5.34 ) (4.62 ) (4.62 ) (2.98 ) (1.63 ) (2.04 ) Net gain/(loss) on investments, net of non-controlling interests 4.94 5.72 7.71 6.66 6.69 9.33 10.18 14.38 Net income/(loss) (0.94 ) 1.94 2.62 2.26 2.29 6.35 8.55 12.34 Net asset value, September 30, 2019 $ 116.69 $ 136.1 $ 183.56 $ 159.07 $ 158.55 $ 77.76 $ 91.03 $ 120.52 Ratios to average net assets Net investment income/(loss) -6.77 % -3.77 % -3.77 % -3.77 % -3.77 % -5.44 % -2.43 % -2.44 % Expenses before incentive fees (3)(4) 6.96 % 3.95 % 3.95 % 3.95 % 3.95 % 5.44 % 2.43 % 2.43 % Expenses after incentive fees (3)(4) 6.96 % 3.95 % 3.95 % 3.95 % 3.95 % 5.44 % 2.43 % 2.43 % Total return before incentive fees (2) -0.8 % 1.45 % 1.45 % 1.44 % 1.47 % 8.89 % 10.37 % 11.41 % Total return after incentive fees (2) -0.8 % 1.45 % 1.45 % 1.44 % 1.47 % 8.89 % 10.37 % 11.41 % Frontier Global Fund Frontier Heritage Fund Class 1 Class 1AP Class 2 Class 1 Class 1AP Class 2 Per unit operating performance (1) Net asset value, December 31, 2018 $ 131.57 $ 149.92 $ 187.17 $ 99.83 $ 111.78 $ 152.53 Net operating results: Interest income (0.00 ) (0.00 ) (0.00 ) (0.00 ) 0 (0.00 ) Expenses (8.33 ) (6.05 ) (7.50 ) (5.13 ) (3.49 ) (4.35 ) Net gain/(loss) on investments, net of non-controlling interests 28.78 33.29 41.53 18.23 22.87 28.3 Net income/(loss) 20.45 27.24 34.03 13.1 19.38 23.95 Net asset value, September 30, 2019 $ 152.02 $ 177.16 $ 221.2 $ 112.93 $ 131.16 $ 176.48 Ratios to average net assets Net investment income/(loss) -7.93 % -4.93 % -4.93 % -6.62 % -3.61 % -3.61 % Expenses before incentive fees (3)(4) 7.93 % 4.93 % 4.93 % 6.62 % 3.61 % 3.61 % Expenses after incentive fees (3)(4) 7.93 % 4.93 % 4.93 % 6.62 % 3.61 % 3.61 % Total return before incentive fees (2) 15.54 % 18.17 % 18.18 % 13.12 % 17.34 % 15.7 % Total return after incentive fees (2) 15.54 % 18.17 % 18.18 % 13.12 % 17.34 % 15.7 % (1) Interest income and expenses per unit are calculated by dividing these amounts by the average number of units outstanding during the period. The net gain/(loss) on investments, net of non-controlling interests is a balancing amount necessary to reconcile the change in net asset value per unit with the other per unit information. (2) Impact of incentive fee computed using average net assets, otherwise computed using average units outstanding during the period prior to the effects of any non-controlling transactions. An owner's total returns may vary from the above returns based on the timing of contributions and withdrawals. Total returns are not annualized. (3) Expense ratios do not reflect interest allocated to the Managing Owner as such expenses are not included in the Statements of Operations of the Series, see footnote 6. (4) Expense ratios do not include management and incentive fees at the Galaxy Plus entities. The ratios would have been higher had those expenses been included. The impact of those fees is included in the total return.
Frontier Funds [Member]
Financial Highlights	7. Financial Highlights The following information presents the financial highlights of the Trust for the three and nine months ended September 30, 2020 and September 30, 2019. This data has been derived from the information presented in the consolidated financial statements. Three months ended September 30 2020 2019 Ratios to average net assets (1) Net investment income/(loss) (1) -5.84 % -5.29 % Expenses before incentive fees (3) (4) -5.88 % 5.40 % Expenses after incentive fees (3) (4) -5.88 % 5.40 % Total return before incentive fees (2) -10.08 % 0.90 % Total return after incentive fees (2) -10.08 % 0.90 % Nine months ended September 30 2020 2019 Ratios to average net assets (1) Net investment income/(loss) (1) -5.70 % -5.56 % Expenses before incentive fees (3) (4) -5.69 % -5.73 % Expenses after incentive fees (3) (4) -5.74 % -5.73 % Total return before incentive fees (2) -36.52 % 1.97 % Total return after incentive fees (2) -36.56 % 1.97 % (1) Annualized with the exception of incentive fees. (2) Total returns are not annualized. (3) Expense ratios do not reflect interest allocated to the Managing Owner as such expenses are not included in the Consolidated Statements of Operations of the Trust. See footnote 5. The Trust financial highlights are calculated based upon the Trust's consolidated financial statements. The consolidated Trust does not issue units and therefore the financial highlights do not disclose any unitized data.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	9 Months Ended
	Sep. 30, 2020
The Series of Frontier Funds [Member]
Derivative Instruments and Hedging Activities	8. Derivative Instruments and Hedging Activities The Series’ primary business is to engage in speculative trading of a diversified portfolio of futures, forwards (including interbank foreign currencies), options contracts and other derivative instruments (including swap contracts). The Series do not enter into or hold positions for hedging purposes as defined under ASC 815, Derivatives and Hedging The following tables summarize the monthly averages of futures contracts bought and sold for each respective Series of the Trust: For the three months ended September 30, 2020 Monthly average contracts: Bought Sold Frontier Balanced Fund 600 726 For the three months ended September 30, 2019 Monthly average contracts: Bought Sold Frontier Balanced Fund 138 246 For the nine months ended September 30, 2020 Monthly average contracts: Bought Sold Frontier Balanced Fund 578 568 For the nine months ended September 30, 2019 Monthly average contracts: Bought Sold Frontier Balanced Fund 617 827 The following tables summarize the trading revenues for the three and nine months ended September 30, 2020, and 2019 by sector: Realized Trading Revenue from Futures, Forwards and Options for the Three Months Ended September 30, 2020 Type of contract Frontier Balanced Fund Agriculturals $ 107,606 Currencies 36,116 Energies (29,190 ) Interest rates (80,947 ) Metals 105,688 Stock indices 28,280 Realized trading income/(loss) (1) $ 167,553 (1) Amounts recorded in the Statements of Operations under Net realized gain(loss) on futures forwards and options. Realized Trading Revenue from Futures, Forwards and Options for the Three Months Ended September 30, 2019 Type of contract Frontier Balanced Fund Agriculturals $ (54,047 ) Currencies (161,381 ) Energies (13,734 ) Interest rates 148,301 Metals 44,521 Stock indices (55,718 ) Realized trading income/(loss) (1) $ (92,058 ) (1) Amounts recorded in the Statements of Operations under Net realized gain(loss) on futures forwards and options. Realized Trading Revenue from Futures, Forwards and Options for the Nine Months Ended September 30, 2020 Type of contract Frontier Balanced Fund Agriculturals $ 132,659 Currencies 15,372 Energies (15,120 ) Interest rates 56,888 Metals 427,135 Stock indices (28,822 ) Realized trading income/(loss) (1) $ 588,112 (1) Amounts recorded in the Statements of Operations under Net realized gain(loss) on futures forwards and options. Realized Trading Revenue from Futures, Forwards and Options for the Nine Months Ended September 30, 2019 Type of contract Frontier Balanced Fund Agriculturals $ 9,995 Currencies (280,126 ) Energies (21,731 ) Interest rates 460,843 Metals 58,195 Stock indices (61,336 ) Realized trading income/(loss) (1) $ 165,840 (1) Amounts recorded in the Statements of Operations under Net realized gain(loss) on futures forwards and options. Net Change in Open Trade Equity from Futures, Forwards and Options for the Three Months Ended September 30, 2020 Type of contract Frontier Balanced Fund Agriculturals $ (73,529 ) Currencies (12,856 ) Energies (35,050 ) Interest rates 46,611 Metals 28,731 Stock indices (7,741 ) Change in unrealized trading income/(loss) (1) $ (53,834 ) (1) Amounts recorded in the Statements of Operations under Net change in open trade equity/(deficit) Net Change in Open Trade Equity from Futures, Forwards and Options for the Three Months Ended September 30, 2019 Type of contract Frontier Balanced Fund Agriculturals $ 3,305 Currencies 47,292 Energies 4,480 Interest rates (81,857 ) Metals 19,396 Stock indices (20,887 ) Change in unrealized trading income/(loss) (1) $ (28,271 ) (1) Amounts recorded in the Statements of Operations under Net change in open trade equity/(deficit) Net Change in Open Trade Equity from Futures, Forwards and Options for the Nine Months Ended September 30, 2020 Type of contract Frontier Balanced Fund Agriculturals $ (58,614 ) Currencies (27,439 ) Energies (39,325 ) Interest rates 76,647 Metals (91,914 ) Stock indices 9,775 Change in unrealized trading income/(loss) (1) $ (130,869 ) (1) Amounts recorded in the Statements of Operations under Net change in open trade equity/(deficit) Net Change in Open Trade Equity from Futures, Forwards and Options for the Nine Months Ended September 30, 2019 Type of contract Frontier Balanced Fund Agriculturals $ 3,305 Currencies (63,185 ) Energies 20,847 Interest rates (89,117 ) Metals (80,268 ) Stock indices (16,368 ) Change in unrealized trading income/(loss) (1) $ (224,786 ) (1) Amounts recorded in the Statements of Operations under Net change in open trade equity/(deficit) Certain financial instruments and derivative instruments are eligible for offset in the statements of financial condition under GAAP. The Series’ open trade equity/(deficit), options written, and receivables from FCMs are subject to master netting arrangements and collateral arrangements and meet the GAAP guidance to qualify for offset. A master netting arrangement with a counterparty creates a right of offset for amounts due to and from that same counterparty that is enforceable in the event of a default or bankruptcy. The Series’ policy is to recognize amounts subject to master netting arrangements on a net basis on the statements of financial condition. The following tables present gross and net information about the Series’ assets and liabilities subject to master netting arrangements as disclosed on the statements of financial condition as of September 30, 2020 and December 31, 2019. As of September 30, 2020 Gross Gross Net Frontier Balanced Fund Open Trade Equity/(Deficit) $ 1,111,441 $ (1,171,216 ) $ (59,775 ) Swap Contracts 7,319,420 - 7,319,420 Frontier Diversified Fund Swap Contracts $ 4,553,855 $ - $ 4,553,855 Frontier Long/Short Commodity Fund Swap Contracts $ 578,274 $ - $ 578,274 As of December 31, 2019 Gross Gross Net Frontier Balanced Fund Open Trade Equity/(Deficit) $ 154,778 $ (38,594 ) $ 116,184 Swap Contracts 11,944,753 - $ 11,944,753 Frontier Diversified Fund Swap Contracts $ 6,384,583 $ - $ 6,384,583 Frontier Long/Short Commodity Fund Swap Contracts $ 362,521 $ - $ 362,521 Frontier Heritage Fund Swap Contracts $ 2,888,009 $ - $ 2,888,009
Frontier Funds [Member]
Derivative Instruments and Hedging Activities	8. Derivative Instruments and Hedging Activities The Trust’s primary business is to engage in speculative trading of a diversified portfolio of futures, forwards (including interbank foreign currencies), options contracts and other derivative instruments (including swap contracts). The Trust does not enter into or hold positions for hedging purposes as defined under ASC 815. The detail of the fair value of the Trust’s derivatives by instrument types as of September 30, 2020 and December 31, 2019 is included in the Consolidated Condensed Schedules of Investments. See Note 4 for further disclosure related to the Trust’s positions in swap contracts. There are embedded management fees in transacting these swaps ranging from 1% to 1.5% based on fair value of swaps and the embedded incentive fees ranging from 15% to 25% based on net new trading profits on swaps. For the three months ended September 30, 2020 and September 30, 2019, the monthly average of futures, forwards and options contracts bought was approximately 600, and 138, respectively and sold was approximately 726, and 246, respectively. For the nine months ended September 30, 2020 and September 30, 2019, the monthly average of futures, forwards and options contracts bought was approximately 578, and 617, respectively and sold was approximately 568, and 827, respectively. The following tables summarize the trading revenues for the three and nine months ended September 30, 2020 and September 30, 2019 by contract type: Realized Trading Revenue from Futures, Forwards and Options for the Three Months Ended September 30, 2020 Type of contract Agriculturals $ 107,606 Currencies 36,116 Energies (29,190 ) Interest rates (80,947 ) Metals 105,688 Stock indices 28,280 Realized trading income/(loss) (1) $ 167,553 Realized Trading Revenue from Futures, Forwards and Options for the Three Months Ended September 30, 2019 Type of contract Agriculturals $ (54,047 ) Currencies (161,381 ) Energies (13,734 ) Interest rates 148,301 Metals 44,521 Stock indices (55,718 ) Realized trading income/(loss) (1) $ (92,058 ) Realized Trading Revenue from Futures, Forwards and Options for the Nine Months Ended September 30, 2020 Type of contract Agriculturals $ 132,659 Currencies 15,372 Energies (15,120 ) Interest rates 56,888 Metals 427,135 Stock indices (28,822 ) Realized trading income/(loss) (1) $ 588,112 Realized Trading Revenue from Futures, Forwards and Options for the Nine Months Ended September 30, 2019 Type of contract Agriculturals $ (49,568 ) Currencies (852,338 ) Energies (606,626 ) Interest rates 1,013,511 Metals (566,993 ) Stock indices (128,896 ) Realized trading income/(loss) (1) $ (1,190,910 ) (1) Amounts recorded in the Statements of Operations under Net realized gain(loss) on futures forwards and options. Net Change in Open Trade Equity from Futures, Forwards and Options for the Three Months Ended September 30, 2020 Type of contract Agriculturals $ (73,529 ) Currencies (12,856 ) Energies (35,050 ) Interest rates 46,611 Metals 28,731 Stock indices (7,741 ) Change in unrealized trading income/(loss) (1) $ (53,834 ) Net Change in Open Trade Equity from Futures, Forwards and Options for the Three Months Ended September 30, 2019 Type of contract Agriculturals $ 3,305 Currencies 47,292 Energies 4,480 Interest rates (81,857 ) Metals 19,396 Stock indices (20,887 ) Change in unrealized trading income/(loss) (1) $ (28,271 ) Net Change in Open Trade Equity from Futures, Forwards and Options for the Nine Months Ended September 30, 2020 Type of contract Agriculturals $ (58,614 ) Currencies (27,439 ) Energies (39,325 ) Interest rates 76,647 Metals (91,914 ) Stock indices 9,775 Change in unrealized trading income/(loss) (1) $ (130,869 ) Net Change in Open Trade Equity from Futures, Forwards and Options for the Nine Months Ended September 30, 2019 Type of contract Agriculturals $ (93,622 ) Currencies 217,927 Energies 226,118 Interest rates (415,874 ) Metals 508,370 Stock indices 34,958 Change in unrealized trading income/(loss) (1) $ 477,877 (1) Amounts recorded in the Statements of Operations under Net change in open trade equity/(deficit) Certain financial instruments and derivative instruments are eligible for offset in the statements of financial condition under GAAP. The Trust’s open trade equity/(deficit), options written, and receivables from FCMs are subject to master netting arrangements and collateral arrangements and meet the GAAP guidance to qualify for offset. A master netting arrangement with a counterparty creates a right of offset for amounts due to and from that same counterparty that is enforceable in the event of a default or bankruptcy. The Trust’s policy is to recognize amounts subject to master netting arrangements on a net basis on the consolidated statements of financial condition. The following tables present gross and net information about the Trust’s assets and liabilities subject the master netting arrangements as disclosed on the consolidated statements of financial condition as of September 30, 2020 and December 31, 2019: As of September 30, 2020 Gross Amounts Gross Net Open Trade Equity/(Deficit) $ 1,111,441 $ (1,171,216 ) $ (59,775 ) Swap Contracts $ 12,451,549 - $ 12,451,549 As of December 31, 2019 Gross Amounts Gross Net Open Trade Equity/(Deficit) $ 154,778 $ (38,594 ) $ 116,184 Swap Contracts 21,579,866 - 21,579,866

Trading Activities and Related

Trading Activities and Related Risks	9 Months Ended
	Sep. 30, 2020
The Series of Frontier Funds [Member]
Trading Activities and Related Risks	9. Trading Activities and Related Risks The purchase and sale of futures and options on futures contracts require margin deposits with FCMs. Additional deposits may be necessary for any loss on contract value. The Commodity Exchange Act, as amended ("CEA"), requires an FCM to segregate all customer transactions and assets from the FCM's proprietary activities. A customer's cash and other property (for example, U.S. treasury bills) deposited with an FCM are considered commingled with all other customer funds subject to the FCM's segregation requirements. In the event of an FCM's insolvency, recovery may be limited to a pro rata share of segregated funds available. It is possible that the recovered amount could be less than the total of cash and other property deposited. The term "off-balance sheet risk" refers to an unrecorded potential liability that, even though it does not appear on the statements of financial condition, may result in future obligation or loss in excess of the amount paid by the Series for a particular investment. Each Trading Company expects to trade in futures, options, forward and swap contracts and will therefore be a party to financial instruments with elements of off-balance sheet market and credit risk. In entering into these contracts, there exists a market risk that such contracts may be significantly influenced by market conditions, such as interest rate volatility, resulting in such contracts being less valuable. If the markets should move against all of the futures positions held by a Trading Company or Galaxy Plus entity in respect of any Series at the same time, and if the Trading Advisor(s) of such Trading Company or Galaxy Plus entity are unable to offset such futures interests positions, such Trading Company or Galaxy Plus entity could lose all of its assets and the holders of Units of such Series would realize a 100% loss. The Managing Owner will seek to minimize market risk through real-time monitoring of open positions and the level of diversification of each Trading Advisor's portfolio. It is anticipated that any Trading Advisor's margin-to-equity ratio will typically not exceed approximately 35% although the actual ratio could be higher or lower from time to time. In addition to market risk, trading futures, forward and swap contracts entails credit risk that a counterparty will not be able to meet its obligations to a Trading Company or Galaxy Plus entity. The counterparty for futures contracts traded in the United States and on most foreign exchanges is the clearinghouse associated with such exchange. In general, clearinghouses are backed by the corporate members of the clearinghouse who are required to share any financial burden resulting from the non-performance by one of their members and, as such, should significantly reduce this credit risk. In cases where the clearinghouse is not backed by the clearing members, like some foreign exchanges, it is normally backed by a consortium of banks or other financial institutions. Some non-U.S. exchanges, in contrast to U.S. exchanges, are principals' markets in which performance is the responsibility only of the individual counterparty with whom the Trading Company has entered into the transaction, and not of the exchange or clearing corporation. In these kinds of markets, there is risk of bankruptcy or other failure or refusal to perform by the counterparty. In the case of forward contracts traded on the interbank market and swaps, neither is traded on exchanges. The counterparty is generally a single bank or other financial institution, rather than a group of financial institutions; thus there may be a greater counterparty credit risk. The Managing Owner expects the Trading Advisors to trade only with those counterparties which it believes to be creditworthy. All positions of each Trading Company will be valued each day on a mark-to-market basis. There can be no assurance that any clearing member, clearinghouse or other counterparty will be able to meet its obligations to any Trading Company. The Managing Owner has established procedures to actively monitor and minimize market and credit risks. The Limited Owners bear the risk of loss only to the extent of the market value of their respective investments and, in certain specific circumstances, distributions and redemptions received.
Frontier Funds [Member]
Trading Activities and Related Risks	9. Trading Activities and Related Risks The purchase and sale of futures and options on futures contracts require margin deposits with FCMs. Additional deposits may be necessary for any loss on contract value. The CEA requires an FCM to segregate all customer transactions and assets from the FCM's proprietary activities. A customer's cash and other property (for example, U.S. treasury bills) deposited with an FCM are considered commingled with all other customer funds subject to the FCM's segregation requirements. In the event of an FCM's insolvency, recovery may be limited to a pro rata share of segregated funds available. It is possible that the recovered amount could be less than the total of cash and other property deposited. The term "off-balance sheet risk" refers to an unrecorded potential liability that, even though it does not appear on the statements of financial condition, may result in future obligation or loss in excess of the amount paid by the Series for a particular investment. Each Trading Company and Galaxy Plus entity expects to trade in futures, options, forward and swap contracts and will therefore be a party to financial instruments with elements of off-balance sheet market and credit risk. In entering into these contracts, there exists a market risk that such contracts may be significantly influenced by market conditions, such as interest rate volatility, resulting in such contracts being less valuable. If the markets should move against all of the futures positions held by a Trading Company or Galaxy Plus entity in respect of any Series at the same time, and if the Trading Advisor(s) of such Trading Company or Galaxy Plus entity are unable to offset such futures interests positions, such Trading Company or Galaxy Plus entity could lose all of its assets and the holders of Units of such Series would realize a 100% loss. The Managing Owner will seek to minimize market risk through real-time monitoring of open positions and the level of diversification of each Trading Advisor's portfolio. It is anticipated that any Trading Advisor's margin-to-equity ratio will typically not exceed approximately 35% although the actual ratio could be higher or lower from time to time. In addition to market risk, trading futures, forward and swap contracts entails credit risk that a counterparty will not be able to meet its obligations to a Trading Company or Galaxy Plus entity. The counterparty for futures contracts traded in the United States and on most foreign exchanges is the clearinghouse associated with such exchange. In general, clearinghouses are backed by the corporate members of the clearinghouse who are required to share any financial burden resulting from the non-performance by one of their members and, as such, should significantly reduce this credit risk. In cases where the clearinghouse is not backed by the clearing members, like some foreign exchanges, it is normally backed by a consortium of banks or other financial institutions. Some non-U.S. exchanges, in contrast to U.S. exchanges, are principals' markets in which performance is the responsibility only of the individual counterparty with whom the Trading Company has entered into the transaction, and not of the exchange or clearing corporation. In these kinds of markets, there is risk of bankruptcy or other failure or refusal to perform by the counterparty. In the case of forward contracts traded on the interbank market and swaps, neither is traded on exchanges. The counterparty is generally a single bank or other financial institution, rather than a group of financial institutions; thus there may be a greater counterparty credit risk. The Managing Owner expects the Trading Advisors to trade only with those counterparties which it believes to be creditworthy. All positions of each Trading Company will be valued each day on a mark-to-market basis. There can be no assurance that any clearing member, clearinghouse or other counterparty will be able to meet its obligations to any Trading Company. The Managing Owner has established procedures to actively monitor and minimize market and credit risks. The Limited Owners bear the risk of loss only to the extent of the market value of their respective investments and, in certain specific circumstances, distributions and redemptions received.

Indemnifications and Guarantees

Indemnifications and Guarantees noted in Management Discussion and Analysis	9 Months Ended
	Sep. 30, 2020
The Series of Frontier Funds [Member]
Indemnifications and Guarantees noted in Management Discussion and Analysis	10. Indemnifications and Guarantees noted in Management Discussion and Analysis The Trust has entered into agreements, which provide for the indemnification of futures clearing brokers, and commodity trading advisers, among others, against losses, costs, claims and liabilities arising from the performance of their individual obligations under such agreements, except for gross negligence, bad faith or willful misconduct. The Trust has had no prior claims or payments pursuant to these agreements. The Trust's individual maximum exposure under these arrangements is unknown, as this would involve future claims that may be made against the Trust that have not yet occurred. However, based on experience the Trust expects the risk of loss to be remote. Maximum exposure is unfulfilled obligations of the Series up to the amount of equity at risk with the custodian of the referenced Series as allocated from the Trading Company. The Series have not recorded any liability for the indemnifications in the accompanying financial statements as it expects any possibility of losses to be remote.
Frontier Funds [Member]
Indemnifications and Guarantees noted in Management Discussion and Analysis	10. Indemnifications and Guarantees The Trust has entered into agreements, which provide for the indemnification of futures clearing brokers, and commodity trading advisers, among others, against losses, costs, claims and liabilities arising from the performance of their individual obligations under such agreements, except for gross negligence, bad faith or willful misconduct. The Trust has had no prior claims or payments pursuant to these agreements. The Trust's individual maximum exposure under these arrangements is unknown, as this would involve future claims that may be made against the Trust that have not yet occurred. However, based on experience the Trust expects the risk of loss to be remote. Maximum exposure is unfulfilled obligations of the Series up to the amount of equity at risk with the custodian of the referenced Series as allocated from the Trading Company. The Series have not recorded any liability for the indemnifications in the accompanying financial statements as it expects any possibility of losses to be remote.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2020
The Series of Frontier Funds [Member]
Subsequent Events	11. Subsequent Events The Managing Owner evaluates events that occur after the balance sheet date but before and up until financial statements are available to be issued. The Managing Owner has assessed the subsequent events through the date that the financial statements were issued and has determined that, except as set forth below, there were no subsequent events requiring adjustment to or disclosure in the financial statements. From October 1, 2020 through November 10, 2020, Frontier Balanced Fund, Frontier Diversified Fund, Frontier Heritage Fund, Frontier Long/Short Commodity Fund, Frontier Masters Fund, Frontier Select Fund, and Frontier Global Fund paid $257,775, $111,437, $12,801, $12,679, $81,549, $32,147 and $73,480, respectively, in redemptions.
Frontier Funds [Member]
Subsequent Events	11. Subsequent Events The Managing Owner evaluates events that occur after the balance sheet date but before and up until financial statements are available to be issued. The Managing Owner has assessed the subsequent events through the date that the financial statements were issued and has determined that, except as set forth below, there were no subsequent events requiring adjustment to or disclosure in the financial statements. From October 1, 2020 through November 10, 2020, the Trust paid $581,868 in redemptions.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2020
The Series of Frontier Funds [Member]
Basis of Presentation	Basis of Presentation
Consolidation	Consolidation Galaxy Plus entities are co-mingled investment vehicles. In addition to the Series, there are other non-affiliated investors in Galaxy Plus entities. Subscriptions and redemptions by these non-affiliated investors will have a direct impact on the Series' ownership percentage in Galaxy Plus entities. It is expected that ownership percentage will fluctuate (sometimes significantly) on a week by week basis which could also result in frequent changes in the consolidating Series. Such fluctuations make consolidating the financial statements of the Galaxy Plus entities both impractical and misleading. Non-consolidation of these Galaxy Plus entities presents a more useful financial statement for the readers. As such, management has decided that presenting Galaxy Plus entities on a non-consolidated basis as investments in other investments companies (a "fund of funds" approach) is appropriate and preferable to the users of these financial statements. Refer to Note 5 for additional disclosures related to these private investment companies.
Change in Consolidation Method	Change in Consolidation Method
Use of Estimates	Use of Estimates—
Cash and Cash Equivalents	Cash and Cash Equivalents—
Interest Income	Interest Income—
U.S. Treasury Securities	U.S. Treasury Securities— Fair Value Measurements and Disclosures ("
Receivable from Futures Commission Merchants	Receivable From Futures Commission Merchants
Investment Transactions	Investment Transactions— Balance Sheet ("ASC 210" Balance Sheet (Topic 210 Any change in net unrealized gain or loss from the preceding period is reported in the statements of operations. Fair value of exchange-traded contracts is based upon exchange settlement prices. Fair value of non-exchange-traded contracts is based on third-party quoted dealer values on the interbank market. For U.S. Treasury securities, interest is recognized in the period earned and the instruments are marked-to-market daily based on third-party information. Transaction costs are recognized as incurred and reflected separately in the statements of operations.
Purchase and Sales of Private Investment Companies	Purchase and Sales of Private Investment Companies
Foreign Currency Transactions	Foreign Currency Transactions—
Allocation of Earnings	Allocation of Earnings— Each Series allocates funds to an affiliated Trading Company, or Companies, of the Trust or unaffiliated Galaxy Plus entity. Each Trading Company allocates all of its daily trading gains or losses to the Series in proportion to each Series' ownership trading level interest in the Trading Company, adjusted on a daily basis (except for Trading Advisors and other investments such as swaps that are directly allocated to a specific Series). Likewise, trading gains and losses earned and incurred by the Series through their investments in Galaxy Plus entities are allocated to those Series on a daily basis. The allocation of gains and losses in Galaxy Plus entities are based on each Series pro-rata shares of the trading level of that entity which is updated at the beginning of each month or more frequently if there is a subscription or redemption activity in the entity. The value of all open contracts and cash held at clearing brokers is similarly allocated to the Series in proportion to each Series' funds allocated to the Trading Companies or Galaxy Plus entities.
Investments and Swaps	Investments and Swaps
Income Taxes	Income Taxes Income Taxes The 2016 through 2019 tax years generally remain subject to examination by U.S. federal and most state tax authorities. In the opinion of the Managing Owner, (i) the Trust, with respect to the Series, is treated as a partnership for federal income tax purposes and, assuming that at least 90% of the gross income of the Trust constitutes "qualifying income" within the meaning of Section 7704(d) of the Code, (ii) the Trust is not a publicly traded partnership treated as a corporation, and (iii) the discussion set forth in the Prospectus under the heading "U.S. Federal Income Tax Consequences" correctly summarizes the material federal income tax consequences as of the date of the Prospectus to potential U.S. Limited Owners of the purchase, ownership and disposition of Units of the Trust.
Fees and Expenses	Fees and Expenses
Incentive Fee (rebate)	Incentive Fee (rebate)
Service Fees	Service Fees Each Series is charged service fees as outlined above. In some cases, amounts paid to selling agents might be less than the amount charged to the Series. When this occurs, the service fee is rebated back to the investor in the form of additional units. During 2017, 2018 and 2019 the Series were not allowed to issue additional units. The Managing Owner has determined that the purchase of additional units of the relevant Series will commence in 2020 at such time as the Series are allowed to sell shares again. As such, the Managing Owner has calculated the amounts for additional units of the relevant series which will be purchased and classified such amounts as Subscriptions in advance for service fee rebates of $22,650, $409, $31,725, $341,603, $19,010, $153,743 and $61,853 for the Frontier Diversified, Long/Short Commodity, Masters, Balanced, Select, Global and Heritage Funds, respectively, as of September 30, 2020. These service fees are part of the offering costs of the Trust, with respect to the Series, which include registration and filing fees, legal and blue-sky expenses, accounting and audit, printing, marketing support and other offering costs which are borne by the Managing Owner. With respect to the service fees, the initial service fee (for the first 12 months) relating to a purchase of Class 1 and Class 1a Units by an investor is prepaid by the Managing Owner to the relevant selling agent in the month following such purchase and is reimbursed for such payment by the Series monthly in arrears in an amount based upon a corresponding percentage of NAV, calculated daily. Consequently, the Managing Owner bears the risk of the downside and enjoys the benefit of the upside potential of any difference between the amount of the initial service fee prepaid by it and the amount of the reimbursement thereof, which may result from variations in NAV over the following 12 months.
Pending Owner Additions	Pending Owner Additions—
Owner redemptions payable	Owner redemptions payable—
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements—
Subsequent Events	Subsequent Events—The Series follow the provisions of ASC 855, Subsequent Events
Frontier Funds [Member]
Basis of Presentation	Basis of Presentation
Consolidation	Consolidation Galaxy Plus entities are co-mingled investment vehicles. In addition to the Trust, there are other non-affiliated investors in Galaxy Plus entities. Subscriptions and redemptions by these non-affiliated investors will have a direct impact on the Trust's ownership percentage in Galaxy Plus entities. It is expected that ownership percentage will fluctuate (sometimes significantly) on a week by week basis which could also result in frequent changes in the consolidating Series. Such fluctuations make consolidating the financial statements of the Galaxy Plus entities both impractical and misleading. Non-consolidation of these Galaxy Plus entities presents a more useful financial statement for the readers. As such, management has decided that presenting Galaxy Plus entities on a non-consolidated basis as investments in other investments companies (a "fund of funds" approach) is appropriate and preferable to the users of these financial statements. Refer to Note 5 for additional disclosures related to these private investment companies.
Change in Consolidation Method	Change in Consolidation Method—
Use of Estimates	Use of Estimates—
Cash and Cash Equivalents	Cash and Cash Equivalents—
Interest Income	Interest Income—
U.S. Treasury Securities	U.S. Treasury Securities— Fair Value Measurements and Disclosures ("
Receivable from Futures Commission Merchants	Receivable from Futures Commission Merchants
Investment Transactions	Investment Transactions— Balance Sheet ("ASC 210" Balance Sheet (Topic 210 Any change in net unrealized gain or loss from the preceding period is reported in the consolidated statements of operations. Fair value of exchange-traded contracts is based upon exchange settlement prices. Fair value of non-exchange-traded contracts is based on third-party quoted dealer values on the interbank market. For U.S. Treasury securities, interest was recognized in the period earned and the instruments were marked-to-market daily based on third-party information. Transaction costs are recognized as incurred and reflected separately in the consolidated statements of operations.
Purchase and Sales of Private Investment Companies	Purchase and Sales of Private Investment Companies
Foreign Currency Transactions	Foreign Currency Transactions—
Allocation of Earnings	Allocation of Earnings—
Investments and Swaps	Investments and Swaps—
Income Taxes	Income Taxes Income Taxes In the opinion of the Managing Owner, (i) the Trust is treated as a partnership for Federal income tax purposes and, assuming that at least 90% of the gross income of the Trust constitutes "qualifying income" within the meaning of Section 7704(d) of the Code, (ii) the Trust is not a publicly traded partnership treated as a corporation, and (iii) the discussion set forth in the Prospectus under the heading "U.S. Federal Income Tax Consequences" correctly summarizes the material Federal income tax consequences as of the date of the Prospectus to potential U.S. Limited Owners of the purchase, ownership and disposition of Series Units of the Trust.
Fees and Expenses	Fees and Expenses—
Incentive Fee (rebate)	Incentive Fee (rebate)—
Service Fees	Service Fees Each Series is charged service fees as outlined above. In some cases, amounts paid to selling agents might be less than the amount charged to the Series. When this occurs, the service fee is rebated back to the investor in the form of additional units. During 2017, 2018 and 2019, the Series were not allowed to issue additional units. The Managing Owner has determined that the purchase of additional units of the relevant Series will commence in 2020 at such time as the Series are allowed to sell shares again. As such, the Managing Owner has calculated the amounts for additional units of the relevant series which will be purchased and classified such amounts as Subscriptions in advance for service fee rebates of $22,650, $409, $31,725, $341,603, $19,010, $153,743 and $61,853 for the Frontier Diversified, Long/Short Commodity, Masters, Balanced, Select, Global and Heritage Funds, respectively, as of September 30, 2020. These service fees are part of the offering costs of the Trust, with respect to the Series, which include registration and filing fees, legal and blue-sky expenses, accounting and audit, printing, marketing support and other offering costs which are borne by the Managing Owner. With respect to the service fees, the initial service fee (for the first 12 months) relating to a purchase of Class 1 and Class 1a Units by an investor is prepaid by the Managing Owner to the relevant selling agent in the month following such purchase and is reimbursed for such payment by the Series monthly in arrears in an amount based upon a corresponding percentage of NAV, calculated daily. Consequently, the Managing Owner bears the risk of the downside and enjoys the benefit of the upside potential of any difference between the amount of the initial service fee prepaid by it and the amount of the reimbursement thereof, which may result from variations in NAV over the following 12 months.
Pending Owner Additions	Pending Owner Additions—
Owner redemptions payable	Owner redemptions payable—
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements—
Subsequent Events	Subsequent Events Subsequent Events

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2020
The Series of Frontier Funds [Member]
Schedule of financial asset portfolio measured at fair value	September 30, 2020 Level 1 Level 2 Level 3 Total Frontier Diversified Fund Investment in Unconsolidated Trading Companies $ 14,532 $ - $ - $ 14,532 Swap Contracts - - 4,553,855 4,553,855 U.S. Treasury Securities 19,838 - - 19,838 Frontier Masters Fund Investment in Unconsolidated Trading Companies 10,133 - - 10,133 U.S. Treasury Securities 13,832 - - 13,832 Frontier Long/Short Commodity Fund Investment in Unconsolidated Trading Companies 14,637 - - 14,637 Swap Contracts - - 578,274 578,274 U.S. Treasury Securities 19,981 - - 19,981 Frontier Balanced Fund Open Trade Equity (Deficit) (59,775 ) - - (59,775 ) Swap Contracts - - 7,319,420 7,319,420 Frontier Select Fund - Investment in Unconsolidated Trading Companies 4,856 - - 4,856 U.S. Treasury Securities 6,629 - - 6,629 Frontier Global Fund - Investment in Unconsolidated Trading Companies 13,279 - - 13,279 U.S. Treasury Securities 18,127 - - 18,127 Frontier Heritage Fund Investment in Unconsolidated Trading Companies 19,916 - - 19,916 U.S. Treasury Securities 27,187 - - 27,187 December 31, 2019 Level 1 Level 2 Level 3 Total Frontier Diversified Fund Investment in Unconsolidated Trading Companies $ 24,150 $ - $ - $ 24,150 Swap Contracts - - 6,384,583 6,384,583 U.S. Treasury Securities 99,605 - - 99,605 Frontier Masters Fund Investment in Unconsolidated Trading Companies 11,005 - - 11,005 U.S. Treasury Securities 45,391 - - 45,391 Frontier Long/Short Commodity Fund Investment in Unconsolidated Trading Companies 14,711 - - 14,711 Swap Contracts - - 362,521 362,521 U.S. Treasury Securities 60,673 - - 60,673 Frontier Balanced Fund Investment in Unconsolidated Trading Companies 50,867 - - 50,867 Open Trade Equity (Deficit) 57,057 59,127 - 116,184 Swap Contracts - - 11,944,753 11,944,753 U.S. Treasury Securities 209,799 - - 209,799 Frontier Select Fund Investment in Unconsolidated Trading Companies 26,331 - 479,024 505,355 U.S. Treasury Securities 108,603 - - 108,603 Frontier Global Fund Investment in Unconsolidated Trading Companies 11,818 - - 11,818 U.S. Treasury Securities 48,741 - - 48,741 Frontier Heritage Fund Investment in Unconsolidated Trading Companies 18,891 - - 18,891 Swap Contracts - - 2,888,008 2,888,008 U.S. Treasury Securities 77,916 - - 77,916
Schedule of change in Level 3 assets measured at fair value on recurring basis	For the Nine Months Ending September 30, 2020 Swaps Frontier Balanced Fund Frontier Long/Short Commodity Fund Balance of recurring Level 3 assets as of January 1, 2020 $ 11,944,753 $ 362,521 Total gains or losses (realized/unrealized): Included in earnings-realized - - Included in earnings-unrealized (5,804,030 ) 215,753 Proceeds from collateral reduction - - Purchase (Sale) of investments 1,178,697 - Change in ownership allocation - - Transfers in and/or out of Level 3 - - Balance of recurring Level 3 assets as of September 30, 2020 $ 7,319,420 $ 578,274 Frontier Diversified Fund Frontier Heritage Fund Balance of recurring Level 3 assets as of January 1, 2020 $ 6,384,583 $ 2,888,009 Total gains or losses (realized/unrealized): Included in earnings-realized - (97,745 ) Included in earnings-unrealized (2,099,874 ) 197,829 Proceeds from collateral reduction - (2,474,937 ) Purchase (Sale) of investments 269,146 (513,156 ) Change in ownership allocation - - Transfers in and/or out of Level 3 - - Balance of recurring Level 3 assets as of September 30, 2020 $ 4,553,855 $ 0 For the Nine Months Ending September 30, 2020 Investments in Unconsolidated Trading Companies: Frontier Balance of recurring Level 3 assets as of January 1, 2020 $ 479,024 Change in fair value of investments in unconsolidated trading companies 95,914 Proceeds from sales of investments of unconsolidated trading companies (574,938 ) Purchases of investments of unconsolidated trading companies - Change in ownership allocation - Transfers in and/or out of Level 3 - Balance of recurring Level 3 assets as of September 30, 2020 $ 0 For the Year Ended December 31, 2019 Swaps Frontier Frontier Balance of recurring Level 3 assets as of January 1, 2019 $ 10,794,908 $ 479,102 Total gains or losses (realized/unrealized): Included in earnings-realized - - Included in earnings-unrealized 1,149,845 (116,581 ) Proceeds from collateral reduction - - Change in ownership allocation - - Transfers in and/or out of Level 3 - - Balance of recurring Level 3 assets as of December 31, 2019 $ 11,944,753 $ 362,521 Frontier Frontier Balance of recurring Level 3 assets as of January 1, 2019 $ 5,920,414 $ 2,955,444 Total gains or losses (realized/unrealized): Included in earnings-realized - - Included in earnings-unrealized 464,169 (67,435 ) Proceeds from collateral reduction - - Change in ownership allocation - - Transfers in and/or out of Level 3 - - Balance of recurring Level 3 assets as of December 31, 2019 $ 6,384,583 $ 2,888,009 For the Year Ended December 31, 2019 Investments in Unconsolidated Trading Companies Frontier Balance of recurring Level 3 assets as of January 1, 2019 $ 511,718 Change in fair value of investments in unconsolidated trading companies (32,694 ) Purchases of investments of unconsolidated trading companies - Change in ownership allocation - Transfers in and/or out of Level 3 - Balance of recurring Level 3 assets as of December 31, 2019 $ 479,024
Schedule of change in unrealized appreciation (depreciation)	The total change in unrealized appreciation (depreciation) included in the statements of operations attributable to level 3 investments still held at September 30, 2020. Frontier Frontier Frontier Frontier Swap Contracts $ (2,099,874 ) $ 215,753 $ (5,804,030 ) $ 197,829 Frontier Investments in Unconsolidated Trading Companies $ 95,914 The total change in unrealized appreciation (depreciation) included in the statements of operations attributable to level 3 investments still held at December 31, 2019. Frontier Frontier Frontier Frontier Swap Contracts $ 464,169 $ (116,581 ) $ 1,149,845 $ (67,436 ) Frontier Investments in Unconsolidated Trading Companies $ (32,694 )
Frontier Funds [Member]
Schedule of financial asset portfolio measured at fair value	September 30, 2020 Level 1 Level 2 Level 3 Fair Value Open Trade Equity (Deficit) $ (59,775 ) $ - $ - $ (59,775 ) Swap Contracts - - 12,451,549 12,451,549 U.S. Treasury Securities 105,594 - - 105,594 December 31, 2019 Level 1 Level 2 Level 3 Fair Value Open Trade Equity (Deficit) $ 57,056 $ 59,128 $ - $ 116,184 Swap Contracts - - 21,579,865 21,579,865 U.S. Treasury Securities 650,728 - - 650,728
Schedule of change in Level 3 assets measured at fair value on recurring basis	For the nine months ending September 30, 2020 For the Nine Months ended September 30, Balance of recurring Level 3 assets as of January 1, 2020 21,579,865 Total gains or losses (realized/unrealized): Included in earnings-realized (97,744 ) Included in earnings-unrealized (7,490,322 ) Proceeds from collateral reduction (2,474,938 ) Purchase of investments 934,688 Sale of investments - Transfers in and/or out of Level 3 - Balance of recurring Level 3 assets as of September 30, 2020 12,451,549 For the year end December 31, 2019 For the Year Balance of recurring Level 3 assets as of January 1, 2019 20,149,868 Total gains or losses (realized/unrealized): Included in earnings-realized - Included in earnings-unrealized 1,429,997 Proceeds from collateral reduction - Purchase of investments - Sale of investments - Transfers in and/or out of Level 3 - Balance of recurring Level 3 assets as of December 31, 2019 21,579,865

Swap Contracts (Tables)

Swap Contracts (Tables)	9 Months Ended
	Sep. 30, 2020
The Series of Frontier Funds [Member]
Schedule of Investments in following swap	The Series have invested in the following swaps as of and for the nine months ended September 30, 2020: Frontier Frontier Frontier Total Return Total Return Total Return Counterparty Deutsche Bank Deutsche Bank Deutsche Bank Notional Amount $ 7,420,403 $ 1,761,834 $ 653,610 Termination Date 7/31/2023 7/31/2023 7/31/2023 Cash Collateral $ 1,264,696 $ 355,147 $ 29,950 Swap Value $ 6,054,724 $ 4,198,708 $ 548,324 Investee Returns Total Returns Total Returns Total Returns Realized Gain/(Loss) $ 0 $ 0 $ 0 Change in Unrealized Gain/(Loss) $ (5,804,030 ) $ (2,099,874 ) $ 215,753 Fair Value as of September 30, 2020 $ 7,319,420 $ 4,553,855 $ 578,274 Advance on swap appreciation $ (6,176,555 ) $ (4,000,000 ) $ (115,000 ) The Series have invested in the following swaps as of and for the year ended December 31, 2019: Frontier Frontier Frontier Frontier Total Return Total Return Total Return Total Return Counterparty Deutsche Bank Deutsche Bank Deutsche Bank Deutsche Bank Notional Amount $ 7,420,403 $ 1,761,834 $ 653,610 $ 2,072,056 Termination Date 7/31/2023 7/31/2023 7/31/2023 3/27/2023 Cash Collateral $ 86,000 $ 86,000 $ 29,950 $ 975,450 Swap Value $ 11,858,754 $ 6,298,583 $ 332,571 $ 1,912,559 Investee Returns Total Returns Total Returns Total Returns Total Returns Realized Gain/(Loss) $ 0 $ 0 $ 0 $ 0 Change in Unrealized Gain/(Loss) $ 1,149,846 $ 464,169 $ (116,581 ) $ (67,435 ) Fair Value as of December 31, 2019 $ 11,944,754 $ 6,384,583 $ 362,521 $ 2,888,009 Advance on swap appreciation $ (6,176,555 ) $ (4,000,000 ) $ (115,000 ) $ (1,900,000 )
Frontier Funds [Member]
Schedule of Investments in following swap	The Trust had invested in the following swaps as of and for the three months ended September 30, 2020: XXXIV XXXV XXXVII L/S Total Return Total Return Total Return Counterparty Deutsche Bank Deutsche Bank Deutsche Bank Notional Amount $ 7,420,403 $ 1,761,834 $ 653,610 Termination Date 7/31/2023 7/31/2023 7/31/2023 Cash Collateral $ 1,264,696 $ 355,147 $ 29,950 Swap Value $ 6,054,724 $ 4,198,708 $ 548,324 Investee Returns Total Returns Total Returns Total Returns Realized Gain/(Loss) $ 0 $ 0 $ 0 Change in Unrealized Gain/(Loss) $ (5,804,030 ) $ (2,099,874 ) $ 215,753 Fair Value as of September 30, 2020 $ 7,319,420 $ 4,553,855 $ 578,274 Advance on swap appreciation $ (6,176,555 ) $ (4,000,000 ) $ (115,000 ) The Trust had invested in the following swaps as of and for the year ended December 31, 2019: XXXIV XXXV XXXVII L/S Brevan Total Return Total Return Total Return Total Return Counterparty Deutsche Bank Deutsche Bank Deutsche Bank Deutsche Bank Notional Amount $ 7,420,403 $ 1,761,834 $ 653,610 $ 2,072,056 Termination Date 7/31/2023 7/31/2023 7/31/2023 3/27/2023 Cash Collateral $ 86,000 $ 86,000 $ 29,950 $ 975,450 Swap Value $ 11,858,754 $ 6,298,583 $ 332,571 $ 1,912,559 Investee Returns Total Returns Total Returns Total Returns Total Returns Realized Gain/(Loss) $ 0 $ 0 $ 0 $ 0 Change in Unrealized Gain/(Loss) $ 1,149,846 $ 464,169 $ (116,581 ) $ (67,435 ) Fair Value as of December 31, 2019 $ 11,944,754 $ 6,384,583 $ 362,521 $ 2,888,009 Advance on swap appreciation $ (6,176,555 ) $ (4,000,000 ) $ (115,000 ) $ (1,900,000 )

Investments in Unconsolidated_2

Investments in Unconsolidated Trading Companies and Private Investment Companies (Tables)	9 Months Ended
	Sep. 30, 2020
The Series of Frontier Funds [Member]
Schedule of investments in unconsolidated trading companies	The following table summarizes each of the Series' investments in unconsolidated Trading Companies as of September 30, 2020 and December 31, 2019: As of September 30, 2020 As of December 31, 2019 Percentage of Percentage of Series Total Series Total Capital Invested in Capital Invested in Series Unconsolidated Fair Value Unconsolidated Fair Value Frontier Diversified Series — Frontier Trading Company XXXVIII 0.28 % $ 14,532 0.20 % $ 24,150 Frontier Masters Fund — Frontier Trading Company XXXVIII 0.80 % $ 10,133 0.49 % $ 11,005 Frontier Long/Short Commodity Fund — Frontier Trading Company XXXVIII 1.16 % $ 14,637 1.10 % $ 14,711 Frontier Balanced Fund — Frontier Trading Company XXXVIII 0.00 % $ - 0.23 % $ 50,867 Frontier Select Fund — Frontier Trading Companies XXXVIII and XXXIX* 0.32 % $ 4,856 17.94 % $ 505,355 Frontier Global Fund — Frontier Trading Company XXXVIII 0.44 % $ 13,279 0.25 % $ 11,818 Frontier Heritage Fund — Frontier Trading Company XXXVIII 0.92 % $ 19,916 0.57 % $ 18,891 * The investment in Frontier Trading Company XXXIX was sold as of June 30, 2020.
Schedule of equity in earnings from unconsolidated trading companies and private investment companies	Three months ended September 30, 2020 and 2019 Three Months Ended September, 2020 Three Months Ended September, 2019 Trading Realized Change in Unrealized Net Income Trading Realized Change in Unrealized Net Income Commissions Gain/(Loss) Gain/(Loss) (Loss) Commissions Gain/(Loss) Gain/(Loss) (Loss) Frontier Balanced Fund Frontier Trading Company II, LLC $ - $ - $ - $ - $ - $ - $ - $ - Frontier Trading Company XXXVIII, LLC - - 371 371 - - 52,720 52,720 Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (1,694 ) (175,943 ) (21,260 ) (198,897 ) (10,590 ) 640,212 (345,285 ) 284,337 Galaxy Plus Fund - Doherty Feeder Fund (528) LLC - - 105 105 (3,924 ) (8,300 ) 50,362 38,138 Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC - - (5,782 ) (5,782 ) (34,168 ) 2,197,458 (2,736,881 ) (573,591 ) Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC (4,862 ) (3,470 ) (33,133 ) (41,465 ) (18,141 ) 489,021 (189,474 ) 281,406 Galaxy Plus Fund - LRR Feeder Fund (522) LLC - - (21,170 ) (21,170 ) - - 49,989 49,989 Galaxy Plus Fund - QIM Feeder Fund (526) LLC (709 ) (231,484 ) 107,025 (125,168 ) (25,825 ) (82,440 ) (70,768 ) (179,033 ) Galaxy Plus Fund - Quantmetrics Feeder Fund (527) LLC - - - - - - (3,220 ) (3,220 ) Galaxy Plus Fund - Quest Feeder Fund (517) LLC (3,539 ) (27,771 ) 22,238 (9,072 ) (5,556 ) 49,061 (81,389 ) (37,884 ) Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (10,562 ) 101,830 (36,659 ) 54,609 (16,734 ) 624,290 (260,857 ) 346,699 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) (1,279 ) (396,950 ) (62,845 ) (461,074 ) - - - - - Total $ (22,645 ) $ (733,788 ) $ (51,110 ) $ (807,543 ) $ (114,938 ) $ 3,909,302 $ (3,534,803 ) $ 259,561 Frontier Global Fund Frontier Trading Company II LLC $ - $ - $ - $ - $ - $ - $ - $ - Frontier Trading Company XXXVIII, LLC - - (2,540 ) (2,540 ) - - (1,261 ) (1,261 ) Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (3,236 ) (317,392 ) (114,867 ) (435,495 ) (121,925 ) 1,258,329 (679,244 ) 457,160 Total $ (3,236 ) $ (317,392 ) $ (117,407 ) $ (438,035 ) $ (121,925 ) $ 1,258,329 $ (680,505 ) $ 455,899 Frontier Select Fund Frontier Trading Company XXXIX, LLC $ - $ - $ - $ - $ - $ - $ 861 $ 861 Frontier Trading Company XXXVIII, LLC - - (1,518 ) (1,518 ) - - (1,956 ) (1,956 ) Galaxy Plus Fund - Doherty Feeder Fund (528) LLC - - (587 ) (587 ) - - - - Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (3,352 ) 33,407 (19,556 ) 10,499 (21,113 ) 271,422 (171,309 ) 79,000 Galaxy Plus Fund - TT Feeder Fund (531) LLC - - (2,763 ) (2,763 ) (15,229 ) 163,325 (80,638 ) 67,458 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) - - (205,413 ) (205,413 ) - - - - Total $ (3,352 ) $ 33,407 $ (229,837 ) $ (199,782 ) $ (36,342 ) $ 434,747 $ (253,042 ) $ 145,363 Frontier Heritage Fund Frontier Trading Company II, LLC $ - $ - $ - $ - $ - $ - $ - $ - Frontier Trading Company XXXVIII, LLC - - 1,742 1,742 - - (1,353 ) (1,353 ) Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (1,524 ) (149,796 ) 275,381 124,061 (31,111 ) 249,999 (134,889 ) 83,999 Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (3,338 ) 34,047 (22,669 ) 8,040 (19,282 ) 210,449 (108,204 ) 82,963 - Total $ (4,862 ) $ (115,749 ) $ 254,454 $ 133,843 $ (50,393 ) $ 460,448 $ (244,446 ) $ 165,609 Frontier Long/Short Commodity Fund Frontier Trading Company XXXVIII, LLC $ - $ - $ (2,028 ) $ (2,028 ) $ - $ - $ (530 ) $ (530 ) Galaxy Plus Fund - Chesapeake Feeder Fund (518) LLC - - - - - - - - Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC - - (882 ) (882 ) (13,946 ) 470,976 (588,738 ) (131,708 ) Galaxy Plus Fund - LRR Feeder Fund (522) LLC (306 ) 40,222 (55,994 ) (16,078 ) - - (40,791 ) (40,791 ) Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (1,198 ) 12,151 (9,162 ) 1,791 (9,973 ) 84,971 (38,123 ) 36,875 Total $ (1,504 ) $ 52,373 $ (68,066 ) $ (17,197 ) $ (23,919 ) $ 555,947 $ (668,182 ) $ (136,154 ) Frontier Diversified Fund Frontier Trading Company II, LLC $ - $ - $ - $ - $ - $ - $ - $ - Frontier Trading Company XXXVIII, LLC - - (426 ) (426 ) - - (1,299 ) (1,299 ) Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (1,068 ) (107,528 ) (19,659 ) (128,255 ) (11,523 ) 380,182 (214,655 ) 154,004 Galaxy Plus Fund - Doherty Feeder Fund (528) LLC - - 182 182 (4,242 ) (5,567 ) 33,921 24,112 Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC - - (3,544 ) (3,544 ) (25,787 ) 1,535,085 (1,923,484 ) (414,186 ) Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC (2,034 ) (1,729 ) (18,808 ) (22,571 ) (18,205 ) 359,073 (146,762 ) 194,106 Galaxy Plus Fund - LRR Feeder Fund (522) LLC - - (9,084 ) (9,084 ) - - 21,004 21,004 Galaxy Plus Fund - QIM Feeder Fund (526) LLC (271 ) (4,480 ) (47,525 ) (52,276 ) (18,552 ) (47,540 ) (43,774 ) (109,866 ) Galaxy Plus Fund - Quantmetrics Feeder Fund (527) LLC - - - - - - - - Galaxy Plus Fund - Quest Feeder Fund (517) LLC (2,406 ) (18,673 ) 13,323 (7,756 ) (6,204 ) 46,394 (71,948 ) (31,758 ) Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (3,320 ) 40,922 (22,756 ) 14,846 (13,631 ) 396,481 (197,360 ) 185,490 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) (639 ) (198,372 ) (32,551 ) (231,562 ) - - - - Total $ (9,738 ) $ (289,860 ) $ (140,848 ) $ (440,446 ) $ (98,144 ) $ 2,664,108 $ (2,544,357 ) $ 21,607 Frontier Masters Fund Frontier Trading Company II, LLC $ - $ - $ - $ - $ - $ - $ - $ - Frontier Trading Company XXXVIII, LLC - - (1,279 ) (1,279 ) - - (1,813 ) (1,813 ) Galaxy Plus Fund - Chesapeake Feeder Fund (518) LLC - - - - - - - - Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (608 ) (62,539 ) (9,877 ) (73,024 ) (21,521 ) 218,469 (117,862 ) 79,086 Galaxy Plus Fund - Doherty Feeder Fund (528) LLC - - (147 ) (147 ) - - - Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC - - (1,242 ) (1,242 ) (16,746 ) 734,894 (911,225 ) (193,077 ) Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (1,164 ) 13,859 (11,510 ) 1,185 (6,607 ) 98,467 (58,877 ) 32,983 Galaxy Plus Fund - TT Feeder Fund (531) LLC - - (1,002 ) (1,002 ) (11,578 ) 153,702 (78,716 ) 63,408 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) (365 ) (113,226 ) (22,157 ) (135,748 ) - - - - Total $ (2,137 ) $ (161,906 ) $ (47,214 ) $ (211,257 ) $ (56,452 ) $ 1,205,532 $ (1,168,493 ) $ (19,413 ) Nine months ended September 30, 2020 and 2019 Nine Months Ended September, 2020 Nine Months Ended September, 2019 Trading Realized Change in Unrealized Net Income Trading Realized Change in Unrealized Net Income Commissions Gain/(Loss) Gain/(Loss) (Loss) Commissions Gain/(Loss) Gain/(Loss) (Loss) Frontier Balanced Fund Frontier Trading Company II, LLC $ - $ - $ - $ - $ - $ - $ (138,899 ) $ (138,899 ) Frontier Trading Company XXXVIII, LLC - - (9,094 ) (9,094 ) - - 51,988 51,988 Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (6,794 ) (163,459 ) (16,563 ) (186,816 ) (32,960 ) 1,276,134 (143,617 ) 1,099,557 Galaxy Plus Fund - Doherty Feeder Fund (528) LLC (2,152 ) (55,735 ) 25,629 (32,258 ) (21,819 ) 37,771 (28,451 ) (12,499 ) Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC (6,408 ) (718,397 ) 75,749 (649,056 ) (207,730 ) 1,181,067 (2,772,516 ) (1,799,179 ) Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC (20,836 ) (327,914 ) 156,749 (192,001 ) (36,877 ) 1,781,745 (263,870 ) 1,480,998 Galaxy Plus Fund - LRR Feeder Fund (522) LLC (502 ) (232,245 ) (42,835 ) (275,582 ) - - 336,666 336,666 Galaxy Plus Fund - QIM Feeder Fund (526) LLC (9,264 ) (899,303 ) 157,923 (750,644 ) (75,800 ) (1,019,048 ) 114,320 (980,528 ) Galaxy Plus Fund - Quantmetrics Feeder Fund (527) LLC - - - - (25,311 ) 24,230 (124,478 ) (125,559 ) Galaxy Plus Fund - Quest Feeder Fund (517) LLC (5,240 ) 28,824 (6,624 ) 16,960 (12,342 ) 94,895 (60,935 ) 21,618 Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (23,203 ) 698,761 (196,095 ) 479,463 (62,382 ) 1,610,738 (656,986 ) 891,370 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) (1,279 ) (396,950 ) (62,845 ) (461,074 ) - - - - - Total $ (75,678 ) $ (2,066,418 ) $ 81,994 $ (2,060,102 ) $ (475,221 ) $ 4,987,532 $ (3,686,778 ) $ 825,533 Frontier Global Fund Frontier Trading Company II LLC $ - $ - $ - $ - $ - $ - $ (337,431 ) $ (337,431 ) Frontier Trading Company XXXVIII, LLC - - (2,994 ) (2,994 ) - - (15,835 ) (15,835 ) Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (11,634 ) (316,235 ) (194,046 ) (521,915 ) (275,586 ) 2,465,012 (544,481 ) 1,644,945 Total $ (11,634 ) $ (316,235 ) $ (197,040 ) $ (524,909 ) $ (275,586 ) $ 2,465,012 $ (897,747 ) $ 1,291,679 Frontier Select Fund Frontier Trading Company XXXIX, LLC $ - $ - $ - $ - $ - $ - $ 40,244 $ 40,244 Frontier Trading Company XXXVIII, LLC - - (8,190 ) (8,190 ) - - (3,628 ) (3,628 ) Galaxy Plus Fund - Doherty Feeder Fund (528) LLC - - (2,203 ) (2,203 ) - - - - Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (7,477 ) 228,470 (72,058 ) 148,935 (55,024 ) 494,161 (218,377 ) 220,760 Galaxy Plus Fund - TT Feeder Fund (531) LLC (5,392 ) (237,723 ) (35,753 ) (278,868 ) (59,657 ) 423,016 (153,951 ) 209,408 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) - - (205,413 ) (205,413 ) - - - - - Total $ (12,869 ) $ (9,253 ) $ (323,617 ) $ (345,739 ) $ (114,681 ) $ 917,177 $ (335,712 ) $ 466,784 Frontier Heritage Fund Frontier Trading Company II, LLC $ - $ - $ - $ - $ - $ - $ (59,538 ) $ (59,538 ) Frontier Trading Company XXXVIII, LLC - - (1,582 ) (1,582 ) - - (5,732 ) (5,732 ) Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (4,298 ) (151,155 ) 238,686 83,233 (72,845 ) 495,954 (67,669 ) 355,440 Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (7,216 ) 215,524 (85,350 ) 122,958 (68,969 ) 494,538 (171,703 ) 253,866 - Total $ (11,514 ) $ 64,369 $ 151,754 $ 204,609 $ (141,814 ) $ 990,492 $ (304,642 ) $ 544,036 Frontier Long/Short Commodity Fund Frontier Trading Company XXXVIII, LLC $ - $ - $ (5,104 ) $ (5,104 ) $ - $ - $ (1,559 ) $ (1,559 ) Galaxy Plus Fund - Chesapeake Feeder Fund (518) LLC - - - - - - - - Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC (938 ) (103,100 ) 7,770 (96,268 ) (51,774 ) 91,669 (359,162 ) (319,267 ) Galaxy Plus Fund - LRR Feeder Fund (522) LLC (978 ) (76,740 ) (71,464 ) (149,182 ) - 102,078 102,078 Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (2,824 ) 88,947 (28,627 ) 57,496 (33,999 ) 210,457 (82,652 ) 93,806 Total $ (4,740 ) $ (90,893 ) $ (97,425 ) $ (193,058 ) $ (85,773 ) $ 302,126 $ (341,295 ) $ (124,942 ) Frontier Diversified Fund Frontier Trading Company II, LLC $ - $ - $ - $ - $ - $ - $ (76,616 ) $ (76,616 ) Frontier Trading Company XXXVIII, LLC - - 2,597 2,597 - - (10,295 ) (10,295 ) Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (4,438 ) (76,179 ) (9,500 ) (90,117 ) (31,082 ) 759,977 (110,678 ) 618,217 Galaxy Plus Fund - Doherty Feeder Fund (528) LLC (1,348 ) (39,612 ) 17,858 (23,102 ) (18,315 ) 22,480 (15,067 ) (10,902 ) Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC (4,119 ) (463,144 ) 50,394 (416,869 ) (134,743 ) 622,921 (1,655,383 ) (1,167,205 ) Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC (13,164 ) (203,387 ) 60,454 (156,097 ) (39,203 ) 1,170,183 (204,327 ) 926,653 Galaxy Plus Fund - LRR Feeder Fund (522) LLC (309 ) (144,282 ) (21,773 ) (166,364 ) - - 165,797 165,797 Galaxy Plus Fund - QIM Feeder Fund (526) LLC (4,112 ) (248,715 ) (1,085 ) (253,912 ) (53,774 ) (620,976 ) 70,231 (604,519 ) Galaxy Plus Fund - Quantmetrics Feeder Fund (527) LLC - - - - (13,254 ) 10,639 (7,477 ) (10,092 ) Galaxy Plus Fund - Quest Feeder Fund (517) LLC (3,920 ) 35,081 (6,574 ) 24,587 (14,152 ) 91,712 (51,421 ) 26,139 Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (10,591 ) 416,995 (40,991 ) 365,413 (47,633 ) 1,000,463 (394,168 ) 558,662 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) (639 ) (198,372 ) (32,551 ) (231,562 ) - - - - Total $ (42,640 ) $ (921,615 ) $ 18,829 $ (945,426 ) $ (352,156 ) $ 3,057,399 $ (2,289,404 ) $ 415,839 Frontier Masters Fund Frontier Trading Company II, LLC $ - $ - $ - $ - $ - $ - $ (65,952 ) $ (65,952 ) Frontier Trading Company XXXVIII, LLC - - (3,554 ) (3,554 ) - - (3,371 ) (3,371 ) Galaxy Plus Fund - Chesapeake Feeder Fund (518) LLC - - - - - - - - Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (2,657 ) (64,127 ) (37,949 ) (104,733 ) (53,384 ) 450,235 (48,097 ) 348,754 Galaxy Plus Fund - Doherty Feeder Fund (528) LLC - - (59 ) (59 ) - - - - Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC (1,540 ) (190,409 ) 30,438 (161,511 ) (98,334 ) 571,048 (1,099,905 ) (627,191 ) Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (3,172 ) 109,775 (20,607 ) 85,996 (24,523 ) 175,753 (10,967 ) 140,263 Galaxy Plus Fund - TT Feeder Fund (531) LLC (1,851 ) (84,259 ) (11,424 ) (97,534 ) (50,514 ) 368,511 (161,851 ) 156,146 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) (365 ) (113,226 ) (22,157 ) (135,748 ) - - - - Total $ (9,585 ) $ (342,246 ) $ (65,312 ) $ (417,143 ) $ (226,755 ) $ 1,565,547 $ (1,390,143 ) $ (51,351 )
Schedule of private investment companies have certain redemption and liquidity restrictions	The Series' investments in private investment companies have certain redemption and liquidity restrictions which are described in the following table: Redemptions Redemptions Liquidity Notice Period Permitted Restrictions Frontier Diversified Fund Multi-Strategy Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC 24 hours Daily None Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) 24 hours Daily None Trend Following Galaxy Plus Fund - Aspect Feeder Fund (532) LLC 24 hours Daily None Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC 24 hours Daily None Galaxy Plus Fund - QIM Feeder Fund (526) LLC 24 hours Daily None Galaxy Plus Fund - Quest Feeder Fund (517) LLC 24 hours Daily None Frontier Masters Fund Trend Following Galaxy Plus Fund - Aspect Feeder Fund (532) LLC 24 hours Weekly None Multi-Strategy Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC 24 hours Daily None Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) 24 hours Daily None Frontier Long/Short Commodity Fund Multi-Strategy Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC 24 hours Daily None Galaxy Plus Fund - LRR Feeder Fund (522) LLC 24 hours Daily None Frontier Balanced Fund Multi-Strategy Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) 24 hours Daily None Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC 24 hours Daily None Trend Following Galaxy Plus Fund - Aspect Feeder Fund (532) LLC 24 hours Daily None Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC 24 hours Daily None Galaxy Plus Fund - QIM Feeder Fund (526) LLC 24 hours Daily None Galaxy Plus Fund - Quest Feeder Fund (517) LLC 24 hours Daily None Frontier Select Fund Multi-Strategy Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC 24 hours Daily None Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) 24 hours Daily None Frontier Global Fund Trend Following Galaxy Plus Fund - Aspect Feeder Fund (532) LLC 24 hours Daily None Frontier Heritage Fund Multi-Strategy Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC 24 hours Daily None Trend Following Galaxy Plus Fund - Aspect Feeder Fund (532) LLC 24 hours Daily None
Frontier Funds [Member]
Schedule of earnings from each of the private investment companies	Three months ended September 30, 2020 and 2019 Three Months Ended September, 2020 Three Months Ended September, 2019 Trading Realized Change in Unrealized Net Income Trading Realized Change in Unrealized Net Income Commissions Gain/(Loss) Gain/(Loss) (Loss) Commissions Gain/(Loss) Gain/(Loss) (Loss) Galaxy Plus Fund - Aspect Feeder Fund (532) LLC (8,130 ) $ (813,198 ) $ 109,718 $ (711,610 ) $ (196,670 ) $ 2,747,191 $ (1,491,935 ) $ 1,058,586 Galaxy Plus Fund - Doherty Feeder Fund (528) LLC - - (447 ) (447 ) (8,166 ) (13,867 ) 84,283 62,250 Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC - - (11,450 ) (11,450 ) (90,647 ) 4,938,413 (6,160,328 ) (1,312,562 ) Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC (6,896 ) (5,199 ) (51,941 ) (64,036 ) (36,346 ) 848,094 (336,236 ) 475,512 Galaxy Plus Fund - LRR Feeder Fund (522) LLC (306 ) 40,222 (86,248 ) (46,332 ) - - 30,202 30,202 Galaxy Plus Fund - QIM Feeder Fund (526) LLC (980 ) (235,964 ) 59,500 (177,444 ) (44,377 ) (129,980 ) (114,542 ) (288,899 ) Galaxy Plus Fund - Quantmetrics Feeder Fund (527) LLC - - - - - - (3,220 ) (3,220 ) Galaxy Plus Fund - Quest Feeder Fund (517) LLC (5,945 ) (46,444 ) 35,561 (16,828 ) (11,760 ) 95,455 (153,337 ) (69,642 ) Galaxy Plus Fund - Quest FIT Feeder Fund (535) LLC - - (80,092 ) (80,092 ) - - - - Galaxy Plus Fund - TT Feeder Fund (531) LLC - - (3,765 ) (3,765 ) (26,807 ) 317,027 (159,354 ) 130,866 Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (22,934 ) 236,216 (122,312 ) 90,970 (87,340 ) 1,686,080 (834,730 ) 764,010 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) (2,283 ) (708,548 ) (322,966 ) (1,033,797 ) - - - - Total (47,474 ) $ (1,532,915 ) $ (474,442 ) $ (2,054,831 ) $ (502,113 ) $ 10,488,413 $ (9,139,197 ) $ 847,103 Nine months ended September 30, 2020 and 2019 Nine Months Ended September, 2020 Nine Months Ended September, 2019 Trading Realized Change in Unrealized Net Income Trading Realized Change in Unrealized Net Commissions Gain/(Loss) Gain/(Loss) (Loss) Commissions Gain/(Loss) Gain/(Loss) Income Galaxy Plus Fund - Aspect Feeder Fund (532) LLC $ (29,821 ) $ (771,155 ) $ (19,372 ) $ (820,348 ) $ (465,857 ) $ 5,447,312 $ (914,542 ) $ 4,066,913 Galaxy Plus Fund - Doherty Feeder Fund (528) LLC (3,500 ) (95,347 ) 41,225 (57,622 ) (40,134 ) 60,251 (43,518 ) (23,401 ) Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC (13,005 ) (1,475,050 ) 164,351 (1,323,704 ) (492,581 ) 2,466,705 (5,886,966 ) (3,912,842 ) Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC (34,000 ) (531,301 ) 217,203 (348,098 ) (76,080 ) 2,951,928 (468,197 ) 2,407,651 Galaxy Plus Fund - LRR Feeder Fund (522) LLC (1,789 ) (453,267 ) (136,072 ) (591,128 ) - - 604,541 604,541 Galaxy Plus Fund - QIM Feeder Fund (526) LLC (13,376 ) (1,148,018 ) 156,838 (1,004,556 ) (129,574 ) (1,640,024 ) 184,551 (1,585,047 ) Galaxy Plus Fund - Quantmetrics Feeder Fund (527) LLC - - - - (38,565 ) 34,869 (131,955 ) (135,651 ) Galaxy Plus Fund - Quest Feeder Fund (517) LLC (9,160 ) 63,905 (13,198 ) 41,547 (26,494 ) 186,607 (112,356 ) 47,757 Galaxy Plus Fund - Quest FIT Feeder Fund (535) LLC - - (80,092 ) (80,092 ) - - (80,033 ) (80,033 ) Galaxy Plus Fund - TT Feeder Fund (531) LLC (7,243 ) (321,982 ) (47,177 ) (376,402 ) (110,171 ) 791,527 (315,802 ) 365,554 Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC (54,483 ) 1,758,472 (443,728 ) 1,260,261 (292,530 ) 3,986,110 (1,534,853 ) 2,158,727 Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) (2,283 ) (708,548 ) (322,966 ) (1,033,797 ) - - - - Total $ (168,660 ) $ (3,682,291 ) $ (482,988 ) $ (4,333,939 ) $ (1,671,986 ) $ 14,285,285 $ (8,699,130 ) $ 3,914,169
Schedule of private investment companies have certain redemption and liquidity restrictions	The Trust's investments in private investment companies have certain redemption and liquidity restrictions which are described in the following table: Redemptions Redemptions Liquidity Notice Period Permitted Restrictions Frontier Funds Multi-Strategy Galaxy Plus Fund - LRR Feeder Fund (522) LLC 24 hours Daily None Galaxy Plus Fund - JL Cyril Systematic Feeder Fund (547) LLC) 24 hours Daily None Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC 24 hours Daily None Trend Following Galaxy Plus Fund - Aspect Feeder Fund (532) LLC 24 hours Daily None Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC 24 hours Daily None Galaxy Plus Fund - QIM Feeder Fund (526) LLC 24 hours Daily None Galaxy Plus Fund - Quest Feeder Fund (517) LLC 24 hours Daily None

Transactions with Affiliates (T

Transactions with Affiliates (Tables) - The Series of Frontier Funds [Member]	9 Months Ended
	Sep. 30, 2020
Schedule of fees earned by managing owner	The following table summarizes fees earned by the Managing Owner for the three and nine months ended September 30, 2020 and 2019, respectively. Three Months Ended September 30, 2020 Incentive (Rebate) Fees Management Fee Service Fee Trading Fee Frontier Diversified Fund $ - $ - $ 2,062 $ 50,536 Frontier Masters Fund - - 407 21,879 Frontier Long/Short Commodity Fund - - 108 7,777 Frontier Balanced Fund - 5,029 73,754 127,677 Frontier Select Fund - - 13,025 10,391 Frontier Global Fund - - 22,977 42,481 Frontier Heritage Fund - - 15,845 25,094 Three Months Ended September 30, 2019 Incentive (Rebate) Fees Management Fee Service Fee Trading Fee Frontier Diversified Fund $ - - $ 11,313 $ 126,165 Frontier Masters Fund - - 1,256 49,626 Frontier Long/Short Commodity Fund - - 134 14,443 Frontier Balanced Fund - 4,614 145,900 236,156 Frontier Select Fund - - 27,710 21,767 Frontier Global Fund - - 45,272 82,029 Frontier Heritage Fund - - 22,197 31,932 Nine Months Ended September 30, 2020 Incentive (Rebate) Fees Management Fee Service Fee Trading Fee Frontier Diversified Fund $ - $ - $ 12,712 $ 208,221 Frontier Masters Fund - - 1,501 83,524 Frontier Long/Short Commodity Fund - - 330 25,089 Frontier Balanced Fund - 14,753 284,736 465,170 Frontier Select Fund - - 51,117 42,791 Frontier Global Fund - - 81,204 150,154 Frontier Heritage Fund - - 51,802 83,036 Nine Months Ended September 30, 2019 Incentive (Rebate) Fees Management Fee Service Fee Trading Fee Frontier Diversified Fund $ - $ 2,668 $ 34,708 $ 382,495 Frontier Masters Fund - 7,665 11,010 175,662 Frontier Long/Short Commodity Fund - - 448 42,660 Frontier Balanced Fund - 17,979 470,826 763,616 Frontier Select Fund - - 79,777 66,874 Frontier Global Fund - 38,679 140,174 207,342 Frontier Heritage Fund - 7,289 66,095 88,678
Schedule of fees payable to managing owner	The following table summarizes fees payable to the Managing Owner as of September 30, 2020 and December 31, 2019. As of September 30, 2020 Incentive Fees Management Fees Interest Fees Service Fees Trading Fees Frontier Diversified Fund $ - $ - $ - $ 632 $ 16,686 Frontier Masters Fund - - - 125 7,360 Frontier Long/Short Commodity Fund - - 44 - 2,699 Frontier Balanced Fund - 8,903 361 20,578 41,480 Frontier Select Fund - - 458 3,701 4,088 Frontier Global Fund - - 230 6,769 13,063 Frontier Heritage Fund - - 326 4,544 7,568 As of December 31, 2019 Incentive Fees Management Fees Interest Fees Service Fees Trading Fees Frontier Diversified Fund $ - $ - $ - $ 3,391 $ 35,877 Frontier Masters Fund - - - 204 11,673 Frontier Long/Short Commodity Fund - - - - 3,468 Frontier Balanced Fund - 8,795 105 41,635 70,179 Frontier Select Fund - - - 6,906 6,000 Frontier Global Fund - - 56 11,263 22,540 Frontier Heritage Fund - - 166 5,362 11,170
Schedule of interest paid by each series to managing owner	Three Months ended September 30, 2020 and 2019 September 30, September 30, September 30, September 30, Gross Amount Gross Amount Ratio to Average Net Assets Ratio to Average Net Assets Frontier Diversified Fund Class 1 $ - $ - 0.00 % 0.00 % Frontier Diversified Fund Class 2 - - 0.00 % 0.00 % Frontier Diversified Fund Class 3 - - 0.00 % 0.00 % Frontier Masters Fund Class 1 - - 0.00 % 0.00 % Frontier Masters Fund Class 2 - - 0.00 % 0.00 % Frontier Masters Fund Class 3 - - 0.00 % 0.00 % Frontier Long/Short Commodity Fund Class 2 6 5 0.02 % 0.01 % Frontier Long/Short Commodity Fund Class 3 158 129 0.02 % 0.01 % Frontier Long/Short Commodity Fund Class 1a - - 0.00 % 0.00 % Frontier Long/Short Commodity Fund Class 2a - - 0.00 % 0.00 % Frontier Long/Short Commodity Fund Class 3a - - 0.00 % 0.00 % Frontier Balanced Fund Class 1 1,019 877 0.01 % 0.00 % Frontier Balanced Fund Class 1AP 16 17 0.01 % 0.00 % Frontier Balanced Fund Class 2 215 178 0.01 % 0.00 % Frontier Balanced Fund Class 2a 2 2 0.00 % 0.00 % Frontier Balanced Fund Class 3a 11 8 0.00 % 0.00 % Frontier Select Fund Class 1 1,349 2,364 0.08 % 0.06 % Frontier Select Fund Class 1AP 8 8 0.08 % 0.06 % Frontier Select Fund Class 2 54 73 0.08 % 0.06 % Frontier Global Fund Class 1 901 1,236 0.03 % 0.02 % Frontier Global Fund Class 1AP 9 8 0.03 % 0.02 % Frontier Global Fund Class 2 57 87 0.03 % 0.02 % Frontier Heritage Fund Class 1 1,151 1,457 0.05 % 0.05 % Frontier Heritage Fund Class 1AP 4 5 0.05 % 0.05 % Frontier Heritage Fund Class 2 235 322 0.06 % 0.05 % $ 5,196 $ 6,776 Nine months ended September 30, 2020 and 2019 September 30, September 30, September 30, September 30, Gross Amount Gross Amount Ratio to Average Net Assets Ratio to Average Net Assets Frontier Diversified Fund Class 1 $ - $ - 0.00 % 0.00 % Frontier Diversified Fund Class 2 - - 0.00 % 0.00 % Frontier Diversified Fund Class 3 - - 0.00 % 0.00 % Frontier Masters Fund Class 1 - - 0.00 % 0.00 % Frontier Masters Fund Class 2 - - 0.00 % 0.00 % Frontier Masters Fund Class 3 - - 0.00 % 0.00 % Frontier Long/Short Commodity Fund Class 2 14 14 0.04 % 0.02 % Frontier Long/Short Commodity Fund Class 3 354 337 0.04 % 0.02 % Frontier Long/Short Commodity Fund Class 1a - - 0.00 % 0.00 % Frontier Long/Short Commodity Fund Class 2a - - 0.00 % 0.00 % Frontier Long/Short Commodity Fund Class 3a - - 0.00 % 0.00 % Frontier Balanced Fund Class 1 5,419 3,758 0.04 % 0.02 % Frontier Balanced Fund Class 1AP 79 62 0.04 % 0.02 % Frontier Balanced Fund Class 2 1,074 733 0.04 % 0.02 % Frontier Balanced Fund Class 2a 12 9 0.01 % 0.00 % Frontier Balanced Fund Class 3a 58 31 0.01 % 0.00 % Frontier Select Fund Class 1 3,081 4,623 0.14 % 0.13 % Frontier Select Fund Class 1AP 15 11 0.14 % 0.16 % Frontier Select Fund Class 2 112 144 0.14 % 0.13 % Frontier Global Fund Class 1 2,649 23,596 0.07 % 0.38 % Frontier Global Fund Class 1AP 24 113 0.07 % 0.32 % Frontier Global Fund Class 2 208 1,373 0.07 % 0.34 % Frontier Heritage Fund Class 1 2,800 4,881 0.12 % 0.17 % Frontier Heritage Fund Class 1AP 11 8 0.12 % 0.16 % Frontier Heritage Fund Class 2 623 991 0.12 % 0.16 % $ 16,533 $ 40,684

Financial Highlights (Tables)

Financial Highlights (Tables)	9 Months Ended
	Sep. 30, 2020
The Series of Frontier Funds [Member]
Schedule of financial highlights of trust	For the three months ended September 30, 2020 Frontier Diversified Fund Frontier Masters Fund Frontier Long/Short Commodity Fund Class 1 Class 2 Class 3 Class 1 Class 2 Class 3 Class 1a Class 2 Class 2a Class 3 Class 3a Per unit operating performance (1) Net asset value, June 30, 2020 $ 74.09 $ 89.88 $ 84.09 $ 61.92 $ 75.13 $ 70.56 $ 44.58 $ 83.27 $ 53.49 $ 87.35 $ 56.38 Net operating results: Interest income 0.01 0.02 0.02 0.03 0.04 0.04 0.03 0.06 0.04 0.06 0.04 Expenses (1.46 ) (0.76 ) (0.71 ) (3.18 ) (1.05 ) (1.00 ) (0.69 ) (0.50 ) (0.32 ) (0.52 ) (0.34 ) Net gain/(loss) on investments, net of non-controlling interests (6.17 ) (8.14 ) (7.57 ) (6.62 ) (10.57 ) (9.87 ) (43.93 ) (1.42 ) (0.82 ) (1.49 ) (0.82 ) Net income/(loss) (7.61 ) (8.88 ) (8.26 ) (9.77 ) (11.58 ) (10.83 ) (44.58 ) (1.86 ) (1.11 ) (1.95 ) (1.12 ) Net asset value, September 30, 2020 $ 66.48 $ 81.00 $ 75.83 $ 52.15 $ 63.55 $ 59.73 $ 0.00 * $ 81.41 $ 52.39 $ 85.40 $ 55.27 Ratios to average net assets Net investment income/(loss) -8.16 % -3.45 % -3.45 % -21.78 % -5.83 % -5.83 % -6.06 % -2.17 % -2.17 % -2.17 % -2.17 % Expenses before incentive fees (3)(4) 8.24 % 3.53 % 3.53 % 22.02 % 6.06 % 6.06 % 6.34 % 2.45 % 2.45 % 2.45 % 2.45 % Expenses after incentive fees (3)(4) 8.24 % 3.53 % 3.53 % 22.02 % 6.06 % 6.06 % 6.34 % 2.45 % 2.45 % 2.45 % 2.45 % Total return before incentive fees (2) -10.28 % -9.88 % -9.83 % -15.78 % -15.41 % -15.35 % -2.46 % -2.23 % -2.07 % -2.23 % -1.98 % Total return after incentive fees (2) -10.28 % -9.88 % -9.83 % -15.78 % -15.41 % -15.35 % -2.46 % -2.23 % -2.07 % -2.23 % -1.98 % Incentive fee per share - - - - - - - - - - - Incentive Fee to ANA 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % Frontier Balanced Fund Frontier Select Fund Class 1 Class 1AP Class 2 Class 2a Class 3a Class 1 Class 1AP Class 2 Per unit operating performance (1) Net asset value, June 30, 2020 $ 78.59 $ 93.76 $ 126.44 $ 109.61 $ 109.24 $ 61.04 $ 72.91 $ 96.75 Net operating results: Interest income 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 Expenses (1.39 ) (0.97 ) (20.94 ) (1.13 ) (1.13 ) (0.78 ) (0.41 ) (0.54 ) Net gain/(loss) on investments, net of non-controlling interests (5.38 ) (6.46 ) 10.92 (7.58 ) (7.51 ) (6.91 ) (8.30 ) (11.01 ) Net income/(loss) (6.77 ) (7.42 ) (10.02 ) (8.71 ) (8.64 ) (7.69 ) (8.70 ) (11.55 ) Net asset value, September 30, 2020 $ 71.82 $ 86.34 $ 116.42 $ 100.90 $ 100.60 $ 53.35 $ 64.20 $ 85.20 Ratios to average net assets Net investment income/(loss) -7.30 % -4.27 % -4.27 % -4.27 % -4.27 % -5.35 % -2.32 % -2.32 % Expenses before incentive fees (3)(4) 7.31 % 4.27 % 4.27 % 4.27 % 4.27 % 5.35 % 2.32 % 2.32 % Expenses after incentive fees (3)(4) 7.31 % 4.27 % 4.27 % 4.27 % 4.27 % 5.35 % 2.32 % 2.32 % Total return before incentive fees (2) -8.61 % -7.92 % -7.92 % -7.95 % -7.91 % -12.60 % -11.93 % -11.93 % Total return after incentive fees (2) -8.61 % -7.92 % -7.92 % -7.95 % -7.91 % -12.60 % -11.93 % -11.93 % Incentive fee per share - - - - - - - - Incentive Fee to ANA 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % Frontier Global Fund Frontier Heritage Fund Class 1 Class 1AP Class 2 Class 1 Class 1AP Class 2 Per unit operating performance (1) Net asset value, June 30, 2020 $ 121.68 $ 145.35 $ 181.09 $ 96.51 $ 115.25 $ 154.24 Net operating results: Interest income 0.00 0.00 0.00 0.00 0.00 0.00 Expenses (2.33 ) (1.77 ) (2.20 ) (1.62 ) (1.10 ) (1.49 ) Net gain/(loss) on investments, net of non-controlling interests (15.17 ) (18.19 ) (22.67 ) (8.01 ) (9.62 ) (12.85 ) Net income/(loss) (17.50 ) (19.96 ) (24.87 ) (9.63 ) (10.72 ) (14.34 ) Net asset value, September 30, 2020 $ 104.18 $ 125.39 $ 156.22 $ 86.88 $ 104.53 $ 139.90 Ratios to average net assets Net investment income/(loss) -8.26 % -5.23 % -5.23 % -7.04 % -4.01 % -4.01 % Expenses before incentive fees (3)(4) 8.26 % 5.23 % 5.23 % 7.04 % 4.01 % 4.01 % Expenses after incentive fees (3)(4) 8.26 % 5.23 % 5.23 % 7.04 % 4.01 % 4.01 % Total return before incentive fees (2) -14.38 % -13.73 % -13.74 % -9.98 % -9.30 % -9.29 % Total return after incentive fees (2) -14.38 % -13.73 % -13.74 % -9.98 % -9.30 % -9.29 % Incentive fee per share - - - - - - Incentive Fee to ANA 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % (1) Interest income and expenses per unit are calculated by dividing these amounts by the average number of units outstanding during the period. The net gain/(loss) on investments, net of non-controlling interests is a balancing amount necessary to reconcile the change in net asset value per unit with the other per unit information. (2) Impact of incentive fee computed using average net assets, otherwise computed using average units outstanding during the period prior to the effects of any non-controlling transactions. An owner's total returns may vary from the above returns based on the timing of contributions and withdrawals. Total returns are not annualized. (3) Expense ratios do not reflect interest allocated to the Managing Owner as such expenses are not included in the Statements of Operations of the Series, see footnote 6. (4) Expense ratios do not include management and incentive fees at the Galaxy Plus entities. The ratios would have been higher had those expenses been included. The impact of those fees is included in the total return. * Class 1a of Frontier Long/Short Commodity Fund was liquidated as of September 30, 2020. For the three months ended September 30, 2019 Frontier Diversified Fund Frontier Masters Fund Frontier Long/Short Commodity Fund Class 1 Class 2 Class 3 Class 1 Class 2 Class 3 Class 1a Class 2 Class 2a Class 3 Class 3a Per unit operating performance (1) Net asset value, June 30, 2019 $ 102.44 $ 122.11 $ 113.96 $ 87.33 $ 104.1 $ 97.53 $ 52.86 $ 98.52 $ 62.24 $ 103.34 $ 65.45 Net operating results: Interest income 0.01 0.01 0.01 0.05 0.06 0.06 0.02 0.03 0.02 0.03 0.02 Expenses (1.69 ) (1.12 ) (1.05 ) (1.53 ) (1.37 ) (1.28 ) (0.76 ) (0.66 ) (0.42 ) (0.69 ) (0.45 ) Net gain/(loss) on investments, net of non-controlling interests 1.96 1.98 1.91 (1.12 ) (1.04 ) (0.91 ) (4.53 ) (9.13 ) (5.54 ) (9.52 ) (5.78 ) Net income/(loss) 0.28 0.87 0.88 (2.60 ) (2.35 ) (2.14 ) (5.30 ) (9.76 ) (5.94 ) (10.18 ) (6.21 ) Net asset value, September 30, 2019 $ 102.72 $ 122.98 $ 114.84 $ 84.73 $ 101.75 $ 95.39 $ 47.56 $ 88.76 $ 56.3 $ 93.16 $ 59.24 Ratios to average net assets Net investment income/(loss) -6.57 % -3.64 % -3.64 % -6.61 % -4.94 % -4.94 % -5.71 % -2.57 % -2.57 % -2.57 % -2.57 % Expenses before incentive fees (3)(4) 6.62 % 3.69 % 3.69 % 6.84 % 5.17 % 5.17 % 5.84 % 2.7 % 2.7 % 2.7 % 2.7 % Expenses after incentive fees (3)(4) 6.62 % 3.69 % 3.69 % 6.84 % 5.17 % 5.17 % 5.84 % 2.7 % 2.7 % 2.7 % 2.7 % Total return before incentive fees (2) 0.27 % 0.71 % 0.76 % -2.97 % -2.26 % -2.19 % -9.99 % -9.91 % -9.54 % -9.85 % -9.49 % Total return after incentive fees (2) 0.27 % 0.71 % 0.76 % -2.97 % -2.26 % -2.19 % -9.99 % -9.91 % -9.54 % -9.85 % -9.49 % Frontier Balanced Fund Frontier Select Fund Class 1 Class 1AP Class 2 Class 2a Class 3a Class 1 Class 1AP Class 2 Per unit operating performance (1) Net asset value, June 30, 2019 $ 116.36 $ 134.69 $ 181.66 $ 157.49 $ 156.91 $ 76.03 $ 88.34 $ 116.96 Net operating results: Interest income 0.05 0.06 0.08 0.07 0.07 (0.00 ) 0 (0.00 ) Expenses (1.90 ) (1.24 ) (1.67 ) (1.45 ) (1.44 ) (1.01 ) (0.51 ) (0.67 ) Net gain/(loss) on investments, net of non-controlling interests 2.18 2.59 3.49 2.96 3.01 2.74 3.2 4.23 Net income/(loss) 0.33 1.41 1.9 1.58 1.64 1.73 2.69 3.56 Net asset value, September 30, 2019 $ 116.69 $ 136.1 $ 183.56 $ 159.07 $ 158.55 $ 77.76 $ 91.03 $ 120.52 Ratios to average net assets Net investment income/(loss) -6.29 % -3.48 % -3.48 % -3.48 % -3.48 % -5.45 % -2.36 % -2.36 % Expenses before incentive fees (3)(4) 6.47 % 3.66 % 3.66 % 3.66 % 3.66 % 5.45 % 2.36 % 2.36 % Expenses after incentive fees (3)(4) 6.47 % 3.66 % 3.66 % 3.66 % 3.66 % 5.45 % 2.36 % 2.36 % Total return before incentive fees (2) 0.28 % 1.05 % 1.05 % 1 % 1.05 % 2.28 % 3.05 % 3.04 % Total return after incentive fees (2) 0.28 % 1.05 % 1.05 % 1 % 1.05 % 2.28 % 3.05 % 3.04 % Frontier Global Fund Frontier Heritage Fund Class 1 Class 1AP Class 2 Class 1 Class 1AP Class 2 Per unit operating performance (1) Net asset value, June 30, 2019 $ 143.64 $ 166.13 $ 207.48 $ 109.6 $ 126.34 $ 169.96 Net operating results: Interest income (0.00 ) (0.00 ) (0.00 ) (0.00 ) 0 (0.00 ) Expenses (2.98 ) (2.16 ) (2.69 ) (1.81 ) (1.16 ) (1.51 ) Net gain/(loss) on investments, net of non-controlling interests 11.36 13.19 16.41 5.14 5.98 8.03 Net income/(loss) 8.38 11.03 13.72 3.33 4.82 6.52 Net asset value, September 30, 2019 $ 152.02 $ 177.16 $ 221.2 $ 112.93 $ 131.16 $ 176.48 Ratios to average net assets Net investment income/(loss) -8.43 % -5.29 % -5.29 % -6.96 % -3.77 % -3.77 % Expenses before incentive fees (3)(4) 8.43 % 5.29 % 5.29 % 6.96 % 3.77 % 3.77 % Expenses after incentive fees (3)(4) 8.43 % 5.29 % 5.29 % 6.96 % 3.77 % 3.77 % Total return before incentive fees (2) 5.84 % 6.64 % 6.61 % 3.04 % 3.82 % 3.84 % Total return after incentive fees (2) 5.84 % 6.64 % 6.61 % 3.04 % 3.82 % 3.84 % (1) Interest income and expenses per unit are calculated by dividing these amounts by the average number of units outstanding during the period. The net gain/(loss) on investments, net of non-controlling interests is a balancing amount necessary to reconcile the change in net asset value per unit with the other per unit information. (2) Impact of incentive fee computed using average net assets, otherwise computed using average units outstanding during the period prior to the effects of any non-controlling transactions. An owner's total returns may vary from the above returns based on the timing of contributions and withdrawals. Total returns are not annualized. (3) Expense ratios do not reflect interest allocated to the Managing Owner as such expenses are not included in the Statements of Operations of the Series, see footnote 6. (4) Expense ratios do not include management and incentive fees at the Galaxy Plus entities. The ratios would have been higher had those expenses been included. The impact of those fees is included in the total return. For the nine months ended September 30, 2020 Frontier Diversified Fund Frontier Masters Fund Frontier Long/Short Commodity Fund Class 1 Class 2 Class 3 Class 1 Class 2 Class 3 Class 1a Class 2 Class 2a Class 3 Class 3a Per unit operating performance (1) Net asset value, December 31, 2019 $ 101.10 $ 121.58 $ 113.61 $ 72.28 $ 87.18 $ 81.78 $ 44.20 $ 81.60 $ 52.55 $ 85.64 $ 55.31 Net operating results: Interest income 0.02 0.03 0.02 0.08 0.10 0.10 0.07 0.13 0.08 0.13 0.09 Expenses (4.88 ) (2.82 ) (2.50 ) (11.57 ) (3.75 ) (3.52 ) (2.13 ) (1.59 ) (1.02 ) (1.67 ) (1.08 ) Net gain/(loss) on investments, net of non-controlling interests (29.76 ) (37.79 ) (35.30 ) (8.64 ) (19.99 ) (18.63 ) (42.14 ) 1.27 0.78 1.30 0.94 Net income/(loss) (34.62 ) (40.58 ) (37.78 ) (20.13 ) (23.63 ) (22.05 ) (44.20 )* (0.19 ) (0.17 ) (0.24 ) (0.05 ) Net asset value, September 30, 2020 $ 66.48 $ 81.00 $ 75.83 $ 52.15 $ 63.55 $ 59.73 $ (0.00 )* $ 81.41 $ 52.39 $ 85.40 $ 55.27 Ratios to average net assets Net investment income/(loss) -10.89 % -5.35 % -5.35 % -35.07 % -9.11 % -9.11 % -9.27 % -3.53 % -3.53 % -3.53 % -3.53 % Expenses before incentive fees (3)(4) 10.94 % 5.40 % 5.40 % 35.33 % 9.37 % 9.37 % 9.58 % 3.84 % 3.84 % 3.84 % 3.84 % Expenses after incentive fees (3)(4) 10.94 % 5.40 % 5.40 % 35.33 % 9.37 % 9.37 % 9.58 % 3.84 % 3.84 % 3.84 % 3.84 % Total return before incentive fees (2) -34.25 % -33.38 % -33.25 % -27.85 % -27.11 % -26.97 % -1.62 % * -0.23 % -0.31 % -0.28 % -0.08 % Total return after incentive fees (2) -34.25 % -33.38 % -33.25 % -27.85 % -27.11 % -26.97 % -1.62 % * -0.23 % -0.31 % -0.28 % -0.08 % Incentive fee per share - - - - - - - - - - - Incentive Fee to ANA 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % Frontier Balanced Fund Frontier Select Fund Class 1 Class 1AP Class 2 Class 2a Class 3a Class 1 Class 1AP Class 2 Per unit operating performance (1) Net asset value, December 31, 2019 $ 117.23 $ 137.81 $ 185.82 $ 161.04 $ 160.50 $ 66.56 $ 78.51 $ 103.94 Net operating results: Interest income 0.04 0.04 0.06 0.05 0.05 0.00 0.00 0.00 Expenses (4.79 ) (3.21 ) (4.34 ) (3.79 ) (3.76 ) (2.61 ) (1.37 ) (1.83 ) Net gain/(loss) on investments, net of non-controlling interests (40.66 ) (48.31 ) (65.11 ) (56.40 ) (56.20 ) (10.60 ) (12.93 ) (16.92 ) Net income/(loss) (45.41 ) (51.47 ) (69.40 ) (60.14 ) (59.90 ) (13.21 ) (14.31 ) (18.74 ) Net asset value, September 30, 2020 $ 71.82 $ 86.34 $ 116.42 $ 100.90 $ 100.60 $ 53.35 $ 64.20 $ 85.20 Ratios to average net assets Net investment income/(loss) -10.42 % -5.92 % -5.92 % -5.92 % -5.92 % -8.15 % -3.64 % -3.64 % Expenses before incentive fees (3)(4) 10.50 % 6.00 % 6.00 % 6.00 % 6.00 % 8.15 % 3.64 % 3.64 % Expenses after incentive fees (3)(4) 10.50 % 6.00 % 6.00 % 6.00 % 6.00 % 8.15 % 3.64 % 3.64 % Total return before incentive fees (2) -38.74 % -37.35 % -37.35 % -37.34 % -37.32 % -19.84 % -18.22 % -18.03 % Total return after incentive fees (2) -38.74 % -37.35 % -37.35 % -37.34 % -37.32 % -19.84 % -18.22 % -18.03 % Incentive fee per share - - - - - - - - Incentive Fee to ANA 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % Frontier Global Fund Frontier Heritage Fund Class 1 Class 1AP Class 2 Class 1 Class 1AP Class 2 Per unit operating performance (1) Net asset value, December 31, 2019 $ 131.52 $ 154.43 $ 192.82 $ 97.54 $ 114.15 $ 153.59 Net operating results: Interest income 0.00 0.00 0.00 0.00 0.00 0.00 Expenses (7.81 ) (5.84 ) (7.38 ) (5.22 ) (3.52 ) (4.74 ) Net gain/(loss) on investments, net of non-controlling interests (19.53 ) (23.20 ) (29.22 ) (5.44 ) (6.11 ) (8.95 ) Net income/(loss) (27.34 ) (29.04 ) (36.60 ) (10.65 ) (9.62 ) (13.69 ) Net asset value, September 30, 2020 $ 104.18 $ 125.39 $ 156.22 $ 86.88 $ 104.53 $ 139.90 Ratios to average net assets Net investment income/(loss) -12.20 % -7.68 % -7.68 % -10.42 % -5.90 % -5.90 % Expenses before incentive fees (3)(4) 12.20 % 7.68 % 7.68 % 10.42 % 5.90 % 5.90 % Expenses after incentive fees (3)(4) 12.20 % 7.68 % 7.68 % 10.42 % 5.90 % 5.90 % Total return before incentive fees (2) -20.79 % -18.80 % -18.98 % -10.92 % -8.43 % -8.91 % Total return after incentive fees (2) -20.79 % -18.80 % -18.98 % -10.92 % -8.43 % -8.91 % Incentive fee per share - - - - - - Incentive Fee to ANA 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % 0.00 % (1) Interest income and expenses per unit are calculated by dividing these amounts by the average number of units outstanding during the period. The net gain/(loss) on investments, net of non-controlling interests is a balancing amount necessary to reconcile the change in net asset value per unit with the other per unit information. (2) Impact of incentive fee computed using average net assets, otherwise computed using average units outstanding during the period prior to the effects of any non-controlling transactions. An owner's total returns may vary from the above returns based on the timing of contributions and withdrawals. Total returns are not annualized. (3) Expense ratios do not reflect interest allocated to the Managing Owner as such expenses are not included in the Statements of Operations of the Series, see footnote 6. (4) Expense ratios do not include management and incentive fees at the Galaxy Plus entities. The ratios would have been higher had those expenses been included. The impact of those fees is included in the total return. * Class 1a of Frontier Long/Short Commodity Fund was liquidated as of September 30, 2020. For the nine months ended September 30, 2019 Frontier Diversified Fund Frontier Masters Fund Frontier Long/Short Commodity Fund Class 1 Class 2 Class 3 Class 1 Class 2 Class 3 Class 1a Class 2 Class 2a Class 3 Class 3a Per unit operating performance (1) Net asset value, December 31, 2018 $ 102.25 $ 120.84 $ 112.62 $ 91.1 $ 107.68 $ 100.77 $ 56.8 $ 98.82 $ 66.52 $ 103.66 $ 69.83 Net operating results: Interest income 0.06 0.07 0.06 0.09 0.11 0.1 0.04 0.08 0.05 0.09 0.05 Expenses (5.12 ) (3.35 ) (3.13 ) (5.44 ) (4.68 ) (4.38 ) (2.45 ) (1.92 ) (1.21 ) (2.02 ) (1.28 ) Net gain/(loss) on investments, net of non-controlling interests 5.54 5.42 5.29 (1.02 ) (1.36 ) (1.10 ) (6.83 ) (8.22 ) (9.06 ) (8.56 ) (9.37 ) Net income/(loss) 0.47 2.14 2.22 (6.37 ) (5.93 ) (5.38 ) (9.24 ) (10.06 ) (10.22 ) (10.50 ) (10.59 ) Net asset value, September 30, 2019 $ 102.72 $ 122.98 $ 114.84 $ 84.73 $ 101.75 $ 95.39 $ 47.56 $ 88.76 $ 56.3 $ 93.16 $ 59.24 Ratios to average net assets Net investment income/(loss) -6.65 % -3.63 % -3.63 % -8.37 % -5.87 % -5.87 % -6.35 % -2.58 % -2.58 % -2.58 % -2.58 % Expenses before incentive fees (3)(4) 6.72 % 3.7 % 3.7 % 8.51 % 6.01 % 6.01 % 6.46 % 2.7 % 2.7 % 2.7 % 2.7 % Expenses after incentive fees (3)(4) 6.72 % 3.7 % 3.7 % 8.51 % 6.01 % 6.01 % 6.46 % 2.7 % 2.7 % 2.7 % 2.7 % Total return before incentive fees (2) 0.46 % 1.77 % 1.97 % -6.99 % -5.51 % -5.34 % -16.27 % -10.18 % -15.36 % -10.13 % -15.17 % Total return after incentive fees (2) 0.46 % 1.77 % 1.97 % -6.99 % -5.51 % -5.34 % -16.27 % -10.18 % -15.36 % -10.13 % -15.17 % Frontier Balanced Fund Frontier Select Fund Class 1 Class 1AP Class 2 Class 2a Class 3a Class 1 Class 1AP Class 2 Per unit operating performance (1) Net asset value, December 31, 2018 $ 117.63 $ 134.16 $ 180.94 $ 156.81 $ 156.26 $ 71.41 $ 82.48 $ 108.18 Net operating results: Interest income 0.16 0.18 0.25 0.21 0.21 (0.00 ) 0 (0.00 ) Expenses (6.03 ) (3.97 ) (5.34 ) (4.62 ) (4.62 ) (2.98 ) (1.63 ) (2.04 ) Net gain/(loss) on investments, net of non-controlling interests 4.94 5.72 7.71 6.66 6.69 9.33 10.18 14.38 Net income/(loss) (0.94 ) 1.94 2.62 2.26 2.29 6.35 8.55 12.34 Net asset value, September 30, 2019 $ 116.69 $ 136.1 $ 183.56 $ 159.07 $ 158.55 $ 77.76 $ 91.03 $ 120.52 Ratios to average net assets Net investment income/(loss) -6.77 % -3.77 % -3.77 % -3.77 % -3.77 % -5.44 % -2.43 % -2.44 % Expenses before incentive fees (3)(4) 6.96 % 3.95 % 3.95 % 3.95 % 3.95 % 5.44 % 2.43 % 2.43 % Expenses after incentive fees (3)(4) 6.96 % 3.95 % 3.95 % 3.95 % 3.95 % 5.44 % 2.43 % 2.43 % Total return before incentive fees (2) -0.8 % 1.45 % 1.45 % 1.44 % 1.47 % 8.89 % 10.37 % 11.41 % Total return after incentive fees (2) -0.8 % 1.45 % 1.45 % 1.44 % 1.47 % 8.89 % 10.37 % 11.41 % Frontier Global Fund Frontier Heritage Fund Class 1 Class 1AP Class 2 Class 1 Class 1AP Class 2 Per unit operating performance (1) Net asset value, December 31, 2018 $ 131.57 $ 149.92 $ 187.17 $ 99.83 $ 111.78 $ 152.53 Net operating results: Interest income (0.00 ) (0.00 ) (0.00 ) (0.00 ) 0 (0.00 ) Expenses (8.33 ) (6.05 ) (7.50 ) (5.13 ) (3.49 ) (4.35 ) Net gain/(loss) on investments, net of non-controlling interests 28.78 33.29 41.53 18.23 22.87 28.3 Net income/(loss) 20.45 27.24 34.03 13.1 19.38 23.95 Net asset value, September 30, 2019 $ 152.02 $ 177.16 $ 221.2 $ 112.93 $ 131.16 $ 176.48 Ratios to average net assets Net investment income/(loss) -7.93 % -4.93 % -4.93 % -6.62 % -3.61 % -3.61 % Expenses before incentive fees (3)(4) 7.93 % 4.93 % 4.93 % 6.62 % 3.61 % 3.61 % Expenses after incentive fees (3)(4) 7.93 % 4.93 % 4.93 % 6.62 % 3.61 % 3.61 % Total return before incentive fees (2) 15.54 % 18.17 % 18.18 % 13.12 % 17.34 % 15.7 % Total return after incentive fees (2) 15.54 % 18.17 % 18.18 % 13.12 % 17.34 % 15.7 % (1) Interest income and expenses per unit are calculated by dividing these amounts by the average number of units outstanding during the period. The net gain/(loss) on investments, net of non-controlling interests is a balancing amount necessary to reconcile the change in net asset value per unit with the other per unit information. (2) Impact of incentive fee computed using average net assets, otherwise computed using average units outstanding during the period prior to the effects of any non-controlling transactions. An owner's total returns may vary from the above returns based on the timing of contributions and withdrawals. Total returns are not annualized. (3) Expense ratios do not reflect interest allocated to the Managing Owner as such expenses are not included in the Statements of Operations of the Series, see footnote 6. (4) Expense ratios do not include management and incentive fees at the Galaxy Plus entities. The ratios would have been higher had those expenses been included. The impact of those fees is included in the total return.
Frontier Funds [Member]
Schedule of financial highlights of trust	Three months ended September 30 2020 2019 Ratios to average net assets (1) Net investment income/(loss) (1) -5.84 % -5.29 % Expenses before incentive fees (3) (4) -5.88 % 5.40 % Expenses after incentive fees (3) (4) -5.88 % 5.40 % Total return before incentive fees (2) -10.08 % 0.90 % Total return after incentive fees (2) -10.08 % 0.90 % Nine months ended September 30 2020 2019 Ratios to average net assets (1) Net investment income/(loss) (1) -5.70 % -5.56 % Expenses before incentive fees (3) (4) -5.69 % -5.73 % Expenses after incentive fees (3) (4) -5.74 % -5.73 % Total return before incentive fees (2) -36.52 % 1.97 % Total return after incentive fees (2) -36.56 % 1.97 % (1) Annualized with the exception of incentive fees. (2) Total returns are not annualized. (3) Expense ratios do not reflect interest allocated to the Managing Owner as such expenses are not included in the Consolidated Statements of Operations of the Trust. See footnote 5.

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2020
The Series of Frontier Funds [Member]
Schedule of averages futures contracts	For the three months ended September 30, 2020 Monthly average contracts: Bought Sold Frontier Balanced Fund 600 726 For the three months ended September 30, 2019 Monthly average contracts: Bought Sold Frontier Balanced Fund 138 246 For the nine months ended September 30, 2020 Monthly average contracts: Bought Sold Frontier Balanced Fund 578 568 For the nine months ended September 30, 2019 Monthly average contracts: Bought Sold Frontier Balanced Fund 617 827
Schedule of realized trading revenue from futures, forwards and options	Realized Trading Revenue from Futures, Forwards and Options for the Three Months Ended September 30, 2020 Type of contract Frontier Balanced Fund Agriculturals $ 107,606 Currencies 36,116 Energies (29,190 ) Interest rates (80,947 ) Metals 105,688 Stock indices 28,280 Realized trading income/(loss) (1) $ 167,553 (1) Amounts recorded in the Statements of Operations under Net realized gain(loss) on futures forwards and options. Realized Trading Revenue from Futures, Forwards and Options for the Three Months Ended September 30, 2019 Type of contract Frontier Balanced Fund Agriculturals $ (54,047 ) Currencies (161,381 ) Energies (13,734 ) Interest rates 148,301 Metals 44,521 Stock indices (55,718 ) Realized trading income/(loss) (1) $ (92,058 ) (1) Amounts recorded in the Statements of Operations under Net realized gain(loss) on futures forwards and options. Realized Trading Revenue from Futures, Forwards and Options for the Nine Months Ended September 30, 2020 Type of contract Frontier Balanced Fund Agriculturals $ 132,659 Currencies 15,372 Energies (15,120 ) Interest rates 56,888 Metals 427,135 Stock indices (28,822 ) Realized trading income/(loss) (1) $ 588,112 (1) Amounts recorded in the Statements of Operations under Net realized gain(loss) on futures forwards and options. Realized Trading Revenue from Futures, Forwards and Options for the Nine Months Ended September 30, 2019 Type of contract Frontier Balanced Fund Agriculturals $ 9,995 Currencies (280,126 ) Energies (21,731 ) Interest rates 460,843 Metals 58,195 Stock indices (61,336 ) Realized trading income/(loss) (1) $ 165,840 (1) Amounts recorded in the Statements of Operations under Net realized gain(loss) on futures forwards and options.
Schedule of net trading gain loss	Net Change in Open Trade Equity from Futures, Forwards and Options for the Three Months Ended September 30, 2020 Type of contract Frontier Balanced Fund Agriculturals $ (73,529 ) Currencies (12,856 ) Energies (35,050 ) Interest rates 46,611 Metals 28,731 Stock indices (7,741 ) Change in unrealized trading income/(loss) (1) $ (53,834 ) (1) Amounts recorded in the Statements of Operations under Net change in open trade equity/(deficit) Net Change in Open Trade Equity from Futures, Forwards and Options for the Three Months Ended September 30, 2019 Type of contract Frontier Balanced Fund Agriculturals $ 3,305 Currencies 47,292 Energies 4,480 Interest rates (81,857 ) Metals 19,396 Stock indices (20,887 ) Change in unrealized trading income/(loss) (1) $ (28,271 ) (1) Amounts recorded in the Statements of Operations under Net change in open trade equity/(deficit) Net Change in Open Trade Equity from Futures, Forwards and Options for the Nine Months Ended September 30, 2020 Type of contract Frontier Balanced Fund Agriculturals $ (58,614 ) Currencies (27,439 ) Energies (39,325 ) Interest rates 76,647 Metals (91,914 ) Stock indices 9,775 Change in unrealized trading income/(loss) (1) $ (130,869 ) (1) Amounts recorded in the Statements of Operations under Net change in open trade equity/(deficit) Net Change in Open Trade Equity from Futures, Forwards and Options for the Nine Months Ended September 30, 2019 Type of contract Frontier Balanced Fund Agriculturals $ 3,305 Currencies (63,185 ) Energies 20,847 Interest rates (89,117 ) Metals (80,268 ) Stock indices (16,368 ) Change in unrealized trading income/(loss) (1) $ (224,786 ) (1) Amounts recorded in the Statements of Operations under Net change in open trade equity/(deficit)
Schedule of gross and net information about the Trust's assets and liabilities	As of September 30, 2020 Gross Gross Net Frontier Balanced Fund Open Trade Equity/(Deficit) $ 1,111,441 $ (1,171,216 ) $ (59,775 ) Swap Contracts 7,319,420 - 7,319,420 Frontier Diversified Fund Swap Contracts $ 4,553,855 $ - $ 4,553,855 Frontier Long/Short Commodity Fund Swap Contracts $ 578,274 $ - $ 578,274 As of December 31, 2019 Gross Gross Net Frontier Balanced Fund Open Trade Equity/(Deficit) $ 154,778 $ (38,594 ) $ 116,184 Swap Contracts 11,944,753 - $ 11,944,753 Frontier Diversified Fund Swap Contracts $ 6,384,583 $ - $ 6,384,583 Frontier Long/Short Commodity Fund Swap Contracts $ 362,521 $ - $ 362,521 Frontier Heritage Fund Swap Contracts $ 2,888,009 $ - $ 2,888,009
Frontier Funds [Member]
Schedule of realized trading revenue from futures, forwards and options	Realized Trading Revenue from Futures, Forwards and Options for the Three Months Ended September 30, 2020 Type of contract Agriculturals $ 107,606 Currencies 36,116 Energies (29,190 ) Interest rates (80,947 ) Metals 105,688 Stock indices 28,280 Realized trading income/(loss) (1) $ 167,553 Realized Trading Revenue from Futures, Forwards and Options for the Three Months Ended September 30, 2019 Type of contract Agriculturals $ (54,047 ) Currencies (161,381 ) Energies (13,734 ) Interest rates 148,301 Metals 44,521 Stock indices (55,718 ) Realized trading income/(loss) (1) $ (92,058 ) Realized Trading Revenue from Futures, Forwards and Options for the Nine Months Ended September 30, 2020 Type of contract Agriculturals $ 132,659 Currencies 15,372 Energies (15,120 ) Interest rates 56,888 Metals 427,135 Stock indices (28,822 ) Realized trading income/(loss) (1) $ 588,112 Realized Trading Revenue from Futures, Forwards and Options for the Nine Months Ended September 30, 2019 Type of contract Agriculturals $ (49,568 ) Currencies (852,338 ) Energies (606,626 ) Interest rates 1,013,511 Metals (566,993 ) Stock indices (128,896 ) Realized trading income/(loss) (1) $ (1,190,910 ) (1) Amounts recorded in the Statements of Operations under Net realized gain(loss) on futures forwards and options.
Schedule of net trading gain loss	Net Change in Open Trade Equity from Futures, Forwards and Options for the Three Months Ended September 30, 2020 Type of contract Agriculturals $ (73,529 ) Currencies (12,856 ) Energies (35,050 ) Interest rates 46,611 Metals 28,731 Stock indices (7,741 ) Change in unrealized trading income/(loss) (1) $ (53,834 ) Net Change in Open Trade Equity from Futures, Forwards and Options for the Three Months Ended September 30, 2019 Type of contract Agriculturals $ 3,305 Currencies 47,292 Energies 4,480 Interest rates (81,857 ) Metals 19,396 Stock indices (20,887 ) Change in unrealized trading income/(loss) (1) $ (28,271 ) Net Change in Open Trade Equity from Futures, Forwards and Options for the Nine Months Ended September 30, 2020 Type of contract Agriculturals $ (58,614 ) Currencies (27,439 ) Energies (39,325 ) Interest rates 76,647 Metals (91,914 ) Stock indices 9,775 Change in unrealized trading income/(loss) (1) $ (130,869 ) Net Change in Open Trade Equity from Futures, Forwards and Options for the Nine Months Ended September 30, 2019 Type of contract Agriculturals $ (93,622 ) Currencies 217,927 Energies 226,118 Interest rates (415,874 ) Metals 508,370 Stock indices 34,958 Change in unrealized trading income/(loss) (1) $ 477,877 (1) Amounts recorded in the Statements of Operations under Net change in open trade equity/(deficit)
Schedule of gross and net information about the Trust's assets and liabilities	As of September 30, 2020 Gross Amounts Gross Net Open Trade Equity/(Deficit) $ 1,111,441 $ (1,171,216 ) $ (59,775 ) Swap Contracts $ 12,451,549 - $ 12,451,549 As of December 31, 2019 Gross Amounts Gross Net Open Trade Equity/(Deficit) $ 154,778 $ (38,594 ) $ 116,184 Swap Contracts 21,579,866 - 21,579,866

Organization and Purpose (The S

Organization and Purpose (The Series of the Frontier Funds) (Details) - The Series of Frontier Funds [Member]	9 Months Ended
	Sep. 30, 2020
Organization and Purpose (Textual)
Managing owner contributions to the series of the trust percentage	1.00%
Aggregate initial and ongoing service fees	9.00%
Aggregate underwriting compensation percentage	10.00%
Minimum [Member]
Organization and Purpose (Textual)
Assets normally invested in one or more trading companies	30.00%
Maximum [Member]
Organization and Purpose (Textual)
Assets normally invested in one or more trading companies	70.00%
Class 1 or Class 1a [Member]
Organization and Purpose (Textual)
Amortized monthly annual rate percentage	2.00%
Service fee percentage	2.00%
Redemption fee percentage	2.00%
Percentage of average daily NAV charged as a service fees	3.00%
Percentage of NAV charged as a service fees	3.00%
Class 2 or Class 2a [Member]
Organization and Purpose (Textual)
Service fee percentage	0.50%
Percentage of NAV charged as a service fees	0.25%

Organization and Purpose (Front

Organization and Purpose (Frontier Funds) (Details) - Frontier Fund [Member]	9 Months Ended
	Sep. 30, 2020
Organization and Purpose (Textual)
Managing owner contributions to the series of the trust percentage	1.00%
Percentage of assets invested in such trading company	100.00%
Aggregate initial and ongoing service fees	9.00%
Delaware statutory trust expire date	Dec. 31, 2053
Aggregate underwriting compensation percentage	10.00%
Percentage of average daily NAV charged as a service fees	2.00%
Percentage of NAV charged as a service fees	3.00%
Minimum [Member]
Organization and Purpose (Textual)
Assets normally invested in one or more trading companies	30.00%
Maximum [Member]
Organization and Purpose (Textual)
Assets normally invested in one or more trading companies	70.00%
Class 1 or Class 1a [Member]
Organization and Purpose (Textual)
Service fee percentage	3.00%
Redemption fee percentage	2.00%
Amortized monthly annual rate	2.00%
Class 2 and Class 2a [Member]
Organization and Purpose (Textual)
Service fee percentage	0.50%
Service fee charged to limited owners	0.25%

Significant Accounting Polici_3

Significant Accounting Policies (The Series of the Frontier Funds) (Details) - The Series of Frontier Funds [Member] - USD ($)	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Significant Accounting Policies (Textual)
Managing owner percentage	2.00%
Restricted cash	$ 2,313,859	$ 2,890,330
Gross income of the Trust constitutes qualifying income	90.00%
Incentive fees percentage	10.00%
Incentive fee, description	The incentive fees earned by the commodity trading advisors up to 10% of new net profits. If the Managing Owner's share of the incentive fee exceeds 10% of new net profits during the period for a particular series, then the Managing Owner is obligated to return any amount in excess to the Series.
Frontier Diversified Fund [Member]
Significant Accounting Policies (Textual)
Advance for service fee	$ 22,650
Frontier Long/Short Commodity Fund [Member]
Significant Accounting Policies (Textual)
Advance for service fee	409
Frontier Masters Fund [Member]
Significant Accounting Policies (Textual)
Advance for service fee	31,725
Frontier Balanced Fund [Member]
Significant Accounting Policies (Textual)
Advance for service fee	341,603
Frontier Select Fund [Member]
Significant Accounting Policies (Textual)
Advance for service fee	19,010
Frontier Global Fund [Member]
Significant Accounting Policies (Textual)
Advance for service fee	153,743
Frontier Heritage Fund [Member]
Significant Accounting Policies (Textual)
Advance for service fee	$ 61,853
Class 1 or Class 1a [Member]
Significant Accounting Policies (Textual)
Amortized monthly annual rate percentage	2.00%
Service fee percentage	2.00%
Redemption fee percentage	2.00%
Percentage of average daily NAV charged as a service fees	3.00%
Percentage of NAV charged as a service fees	3.00%
Class 2 or Class 2a [Member]
Significant Accounting Policies (Textual)
Service fee percentage	0.50%
Percentage of NAV charged as a service fees	0.25%
Class 1AP, Class 2a and Class 3a [Member]
Significant Accounting Policies (Textual)
Aggregate interest income percentage	100.00%

Significant Accounting Polici_4

Significant Accounting Policies (Frontier Funds) (Details) - Frontier Fund [Member] - USD ($)	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Significant Accounting Policies (Textual)
Gross income of the Trust constitutes qualifying income	90.00%
Incentive fee, description	The Managing Owner is allowed to share in the incentive fees earned by the commodity trading advisors up to 10% of new net profits. If the Managing Owner’s share of the incentive fee exceeds 10% of new net profits during the period, then the Managing Owner is obligated to return any amount in excess.
Subscriptions in advance	$ 630,993	$ 598,042
Class 1AP, Class 2a and Class 3a [Member]
Significant Accounting Policies (Textual)
Aggregate interest income from all sources, including assets held at clearing brokers is paid to the Managing Owner	100.00%
Class 2 and Class 2a [Member]
Significant Accounting Policies (Textual)
Service fee percentage	0.50%
Service fee charged to limited owners	0.25%
Class 1 or Class 1a [Member]
Significant Accounting Policies (Textual)
Service fee percentage	3.00%
Amortized monthly annual rate	2.00%
Redemption fee percentage	2.00%
Class 1 or Class 1a [Member] | Frontier Diversified Fund [Member]
Significant Accounting Policies (Textual)
Service fee percentage	2.00%
Amortized monthly annual rate	2.00%
Redemption fee percentage	2.00%
Class 1 or Class 1a [Member] | Frontier Masters Fund [Member]
Significant Accounting Policies (Textual)
Service fee percentage	2.00%
Amortized monthly annual rate	2.00%
Redemption fee percentage	2.00%
Class 1 or Class 1a [Member] | Frontier Long/Short Commodity Fund [Member]
Significant Accounting Policies (Textual)
Service fee percentage	2.00%
Amortized monthly annual rate	2.00%
Redemption fee percentage	2.00%
Class 1 or Class 1a [Member] | Frontier Balanced Fund [Member]
Significant Accounting Policies (Textual)
Service fee percentage	3.00%
Amortized monthly annual rate	3.00%
Redemption fee percentage	3.00%
Class 1 or Class 1a [Member] | Frontier Heritage Fund [Member]
Significant Accounting Policies (Textual)
Service fee percentage	3.00%
Amortized monthly annual rate	3.00%
Redemption fee percentage	3.00%
Class 1 or Class 1a [Member] | Frontier Select Fund [Member]
Significant Accounting Policies (Textual)
Service fee percentage	3.00%
Amortized monthly annual rate	3.00%
Redemption fee percentage	3.00%
Class 1 or Class 1a [Member] | Frontier Global Fund [Member]
Significant Accounting Policies (Textual)
Service fee percentage	3.00%
Amortized monthly annual rate	3.00%
Redemption fee percentage	3.00%
Frontier Trading Company I LLC [Member]
Significant Accounting Policies (Textual)
Restricted cash	$ 2,890,330	$ 2,313,859

Fair Value Measurements (The Se

Fair Value Measurements (The Series of the Frontier Funds) (Details) - The Series of the Frontier Funds [Member] - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Frontier Diversified Fund [Member]
Swap Contracts	$ 4,553,855	$ 6,384,583
U.S. Treasury Securities	19,838	99,605
Frontier Diversified Fund [Member] | Fair Value, Measurements, Recurring [Member]
Investment in Unconsolidated Trading Companies	16,057	24,150
Swap Contracts	4,629,556	6,384,583
U.S. Treasury Securities	113,957	99,605
Frontier Diversified Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 Inputs [Member]
Investment in Unconsolidated Trading Companies	14,532	24,150
Swap Contracts
U.S. Treasury Securities	19,838	99,605
Frontier Diversified Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 Inputs [Member]
Investment in Unconsolidated Trading Companies
Swap Contracts
U.S. Treasury Securities
Frontier Diversified Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 Inputs [Member]
Investment in Unconsolidated Trading Companies
Swap Contracts	4,553,855	6,384,583
U.S. Treasury Securities
Frontier Masters Fund [Member]
Swap Contracts
U.S. Treasury Securities	13,832	45,391
Frontier Masters Fund [Member] | Fair Value, Measurements, Recurring [Member]
Investment in Unconsolidated Trading Companies	10,133	11,005
U.S. Treasury Securities	13,832	45,391
Frontier Masters Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 Inputs [Member]
Investment in Unconsolidated Trading Companies	10,133	11,005
U.S. Treasury Securities	13,832	45,391
Frontier Masters Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 Inputs [Member]
Investment in Unconsolidated Trading Companies
U.S. Treasury Securities
Frontier Masters Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 Inputs [Member]
Investment in Unconsolidated Trading Companies
U.S. Treasury Securities
Frontier Long/Short Commodity Fund [Member]
Swap Contracts	578,274	362,521
U.S. Treasury Securities	19,981	60,673
Frontier Long/Short Commodity Fund [Member] | Fair Value, Measurements, Recurring [Member]
Investment in Unconsolidated Trading Companies	14,637	14,711
Swap Contracts	578,274	362,521
U.S. Treasury Securities	19,981	60,673
Frontier Long/Short Commodity Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 Inputs [Member]
Investment in Unconsolidated Trading Companies	14,637	14,711
Swap Contracts
U.S. Treasury Securities	19,981	60,673
Frontier Long/Short Commodity Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 Inputs [Member]
Investment in Unconsolidated Trading Companies
Swap Contracts
U.S. Treasury Securities
Frontier Long/Short Commodity Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 Inputs [Member]
Investment in Unconsolidated Trading Companies
Swap Contracts	578,274	362,521
U.S. Treasury Securities
Frontier Balanced Fund [Member] | Fair Value, Measurements, Recurring [Member]
Investment in Unconsolidated Trading Companies		50,867
Open Trade Equity (Deficit)	(59,775)	116,184
Swap Contracts	7,319,420	11,944,753
U.S. Treasury Securities		209,799
Frontier Balanced Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 Inputs [Member]
Investment in Unconsolidated Trading Companies		50,867
Open Trade Equity (Deficit)	(59,775)	57,057
Swap Contracts
U.S. Treasury Securities		209,799
Frontier Balanced Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 Inputs [Member]
Investment in Unconsolidated Trading Companies
Open Trade Equity (Deficit)		59,127
Swap Contracts
U.S. Treasury Securities
Frontier Balanced Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 Inputs [Member]
Investment in Unconsolidated Trading Companies
Open Trade Equity (Deficit)
Swap Contracts	7,319,420	11,944,753
U.S. Treasury Securities
Frontier Select Fund [Member]
Swap Contracts
U.S. Treasury Securities	6,629	108,603
Frontier Select Fund [Member] | Fair Value, Measurements, Recurring [Member]
Investment in Unconsolidated Trading Companies	4,856	505,355
U.S. Treasury Securities	6,629	108,603
Frontier Select Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 Inputs [Member]
Investment in Unconsolidated Trading Companies	4,856	26,331
U.S. Treasury Securities	6,629	108,603
Frontier Select Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 Inputs [Member]
Investment in Unconsolidated Trading Companies
U.S. Treasury Securities
Frontier Select Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 Inputs [Member]
Investment in Unconsolidated Trading Companies		479,024
U.S. Treasury Securities
Frontier Global Fund [Member] | Fair Value, Measurements, Recurring [Member]
Investment in Unconsolidated Trading Companies	13,279	11,818
U.S. Treasury Securities	18,127	48,741
Frontier Global Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 Inputs [Member]
Investment in Unconsolidated Trading Companies	13,279	11,818
U.S. Treasury Securities	18,127	48,741
Frontier Global Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 Inputs [Member]
Investment in Unconsolidated Trading Companies
U.S. Treasury Securities
Frontier Global Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 Inputs [Member]
Investment in Unconsolidated Trading Companies
U.S. Treasury Securities
Frontier Heritage Fund [Member]
Swap Contracts		2,888,008
U.S. Treasury Securities	27,187	77,916
Frontier Heritage Fund [Member] | Fair Value, Measurements, Recurring [Member]
Investment in Unconsolidated Trading Companies	19,916	18,891
Swap Contracts		2,888,008
U.S. Treasury Securities	27,187	77,916
Frontier Heritage Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 Inputs [Member]
Investment in Unconsolidated Trading Companies	19,916	18,891
Swap Contracts
U.S. Treasury Securities	27,187	77,916
Frontier Heritage Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 Inputs [Member]
Investment in Unconsolidated Trading Companies
Swap Contracts
U.S. Treasury Securities
Frontier Heritage Fund [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 Inputs [Member]
Investment in Unconsolidated Trading Companies
Swap Contracts		2,888,008
U.S. Treasury Securities

Fair Value Measurements (The _2

Fair Value Measurements (The Series of the Frontier Funds) (Details 1) - The Series of Frontier Funds [Member] - Level 3 Inputs [Member] - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Frontier Balanced Fund [Member] | Swap [Member]
Beginning, Balance of recurring Level 3 assets	$ 11,944,753	$ 10,794,908
Total gains or losses (realized/unrealized):
Included in earnings-realized
Included in earnings-unrealized	(5,804,030)	1,149,845
Proceeds from collateral reduction
Purchase (Sale) of investments	1,178,697
Change in ownership allocation
Transfers in and/or out of Level 3
Ending, Balance of recurring Level 3 assets	7,319,420	11,944,753
Frontier Long/Short Commodity Fund [Member] | Swap [Member]
Beginning, Balance of recurring Level 3 assets	362,521	479,102
Total gains or losses (realized/unrealized):
Included in earnings-realized
Included in earnings-unrealized	215,753	(116,581)
Proceeds from collateral reduction
Purchase (Sale) of investments
Change in ownership allocation
Transfers in and/or out of Level 3
Ending, Balance of recurring Level 3 assets	578,274	362,521
Frontier Diversified Fund [Member] | Swap [Member]
Beginning, Balance of recurring Level 3 assets	6,384,583	5,920,414
Total gains or losses (realized/unrealized):
Included in earnings-realized
Included in earnings-unrealized	(2,099,874)	464,169
Proceeds from collateral reduction
Purchase (Sale) of investments	269,146
Change in ownership allocation
Transfers in and/or out of Level 3
Ending, Balance of recurring Level 3 assets	4,553,855	6,384,583
Frontier Heritage Fund [Member] | Swap [Member]
Beginning, Balance of recurring Level 3 assets	2,888,009	2,955,444
Total gains or losses (realized/unrealized):
Included in earnings-realized	(97,745)
Included in earnings-unrealized	197,829	(67,435)
Proceeds from collateral reduction	(2,474,937)
Purchase (Sale) of investments	(513,156)
Change in ownership allocation
Transfers in and/or out of Level 3
Ending, Balance of recurring Level 3 assets	0	2,888,009
Frontier Select Fund [Member] | Investment in Unconsolidated Trading Companies [Member]
Beginning, Balance of recurring Level 3 assets	479,024	511,718
Total gains or losses (realized/unrealized):
Change in fair value of investments in unconsolidated trading companies	95,914	(32,694)
Proceeds from sales of investments of unconsolidated trading companies	(574,938)
Purchases of investments of unconsolidated trading companies
Change in ownership allocation
Transfers in and/or out of Level 3
Ending, Balance of recurring Level 3 assets	$ 0	$ 479,024

Fair Value Measurements (The _3

Fair Value Measurements (The Series of the Frontier Funds) (Details 2) - Swap Contracts [Member] - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
The Series of Frontier Funds [Member] | Frontier Diversified Fund [Member]
Total change in unrealized appreciation (depreciation)	$ (2,099,874)	$ 464,169
The Series of Frontier Funds [Member] | Frontier Long/Short Commodity Fund [Member]
Total change in unrealized appreciation (depreciation)	215,753	(116,581)
The Series of Frontier Funds [Member] | Frontier Balanced Fund [Member]
Total change in unrealized appreciation (depreciation)	(5,804,030)	1,149,845
The Series of Frontier Funds [Member] | Frontier Heritage Fund [Member]
Total change in unrealized appreciation (depreciation)	197,829	(67,436)
Investments in Unconsolidated Trading Companies [Member] | Frontier Select Fund [Member]
Total change in unrealized appreciation (depreciation)	$ 95,914	$ (32,694)

Fair Value Measurements (Fronti

Fair Value Measurements (Frontier Funds) (Details) - Fair Value, Measurements, Recurring [Member] - Frontier Funds [Member] - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Open Trade Equity (Deficit)	$ (59,775)	$ 116,184
Swap Contracts	12,451,549	21,579,865
U.S. Treasury Securities	105,594	650,728
Level 1 Inputs [Member]
Open Trade Equity (Deficit)	(59,775)	57,056
Swap Contracts
U.S. Treasury Securities	105,594	650,728
Level 2 Inputs [Member]
Open Trade Equity (Deficit)		59,128
Swap Contracts
U.S. Treasury Securities
Level 3 Inputs [Member]
Open Trade Equity (Deficit)
Swap Contracts	12,451,549	21,579,865
U.S. Treasury Securities

Fair Value Measurements (Fron_2

Fair Value Measurements (Frontier Funds) (Details 1) - Level 3 Inputs [Member] - Frontier Funds [Member] - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Beginning, Balance of recurring Level 3 assets	$ 21,579,865	$ 20,149,868
Total gains or losses (realized/unrealized):
Included in earnings-realized	(97,744)
Included in earnings-unrealized	(7,490,322)	1,429,997
Proceeds from collateral reduction	(2,474,938)
Purchase of investments	934,688
Sale of investments
Transfers in and/or out of Level 3
Ending, Balance of recurring Level 3 assets	$ 12,451,549	$ 21,579,865

Fair Value Measurements (Fron_3

Fair Value Measurements (Frontier Funds) (Details Textual) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Swap [Member] | Frontier Funds [Member]
Total change in unrealized appreciation (depreciation)	$ (7,490,322)	$ 1,429,997

Swap Contracts (The Series of t

Swap Contracts (The Series of the Frontier Funds) (Details) - The Series of Frontier Funds [Member] - Swap [Member] - DeutscheBank AG [Member] - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Frontier Balanced Fund [Member]
Notional Amount	$ 7,420,403	$ 7,420,403
Termination Date	Jul. 31, 2023	Jul. 31, 2023
Cash Collateral	$ 1,264,696	$ 86,000
Swap Value	$ 6,054,724	$ 11,858,754
Investee Returns	Total Returns	Total Returns
Realized Gain/(Loss)	$ 0	$ 0
Change in Unrealized Gain/(Loss)	(5,804,030)	1,149,846
Fair Value	7,319,420	11,944,754
Advance on swap appreciation	(6,176,555)	(6,176,555)
Frontier Diversified Fund [Member]
Notional Amount	$ 1,761,834	$ 1,761,834
Termination Date	Jul. 31, 2023	Jul. 31, 2023
Cash Collateral	$ 355,147	$ 86,000
Swap Value	$ 4,198,708	$ 6,298,583
Investee Returns	Total Returns	Total Returns
Realized Gain/(Loss)	$ 0	$ 0
Change in Unrealized Gain/(Loss)	(2,099,874)	464,169
Fair Value	4,553,855	6,384,583
Advance on swap appreciation	(4,000,000)	(4,000,000)
Frontier Long/Short Commodity Fund [Member]
Notional Amount	$ 653,610	$ 653,610
Termination Date	Jul. 31, 2023	Jul. 31, 2023
Cash Collateral	$ 29,950	$ 29,950
Swap Value	$ 548,324	$ 332,571
Investee Returns	Total Returns	Total Returns
Realized Gain/(Loss)	$ 0	$ 0
Change in Unrealized Gain/(Loss)	215,753	(116,581)
Fair Value	578,274	362,521
Advance on swap appreciation	$ (115,000)	(115,000)
Frontier Heritage Fund [Member]
Notional Amount		$ 2,072,056
Termination Date		Mar. 27, 2023
Cash Collateral		$ 975,450
Swap Value		$ 1,912,559
Investee Returns		Total Returns
Realized Gain/(Loss)		$ 0
Change in Unrealized Gain/(Loss)		(67,435)
Fair Value		2,888,009
Advance on swap appreciation		$ (1,900,000)

Swap Contracts (The Series of_2

Swap Contracts (The Series of the Frontier Funds) (Details Textual) - The Series of Frontier Funds [Member] - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Swap Contracts (The Series of the Frontier Funds) (Textual)
Percentage of trust's assets were deposited with over-the-counter counterparties	6.39%	2.40%
Cash holding shall be in excess amount	$ 250,000
Percentage of index exposure total	40.00%
Frontier Balanced Fund [Member]
Swap Contracts (The Series of the Frontier Funds) (Textual)
Advance on unrealized swap appreciation	$ 6,176,555
Frontier Diversified Fund [Member]
Swap Contracts (The Series of the Frontier Funds) (Textual)
Advance on unrealized swap appreciation	4,000,000	$ 4,000,000
Frontier Long/Short Commodity Fund [Member]
Swap Contracts (The Series of the Frontier Funds) (Textual)
Advance on unrealized swap appreciation	$ 115,000	$ 115,000

Swap Contracts (Frontier Funds)

Swap Contracts (Frontier Funds) (Details) - Frontier Funds [Member] - Deutsche Bank AG [Member] - Swap [Member] - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
XXXIV Balanced Select Swap [Member]
Counterparty
Notional Amount	$ 7,420,403	$ 7,420,403
Termination Date	Jul. 31, 2023	Jul. 31, 2023
Cash Collateral	$ 1,264,696	$ 86,000
Swap Value	$ 6,054,724	$ 11,858,754
Investee Returns	Total Returns	Total Returns
Realized Gain/(Loss)	$ 0	$ 0
Change in Unrealized Gain/(Loss)	(5,804,030)	1,149,846
Fair Value	7,319,420	11,944,754
Advance on swap appreciation	(6,176,555)	(6,176,555)
XXXV Diversified Select Swap [Member]
Counterparty
Notional Amount	$ 1,761,834	$ 1,761,834
Termination Date	Jul. 31, 2023	Jul. 31, 2023
Cash Collateral	$ 355,147	$ 86,000
Swap Value	$ 4,198,708	$ 6,298,583
Investee Returns	Total Returns	Total Returns
Realized Gain/(Loss)	$ 0	$ 0
Change in Unrealized Gain/(Loss)	(2,099,874)	464,169
Fair Value	4,553,855	6,384,583
Advance on swap appreciation	(4,000,000)	(4,000,000)
XXXVII L/S Select Swap [Member]
Counterparty
Notional Amount	$ 653,610	$ 653,610
Termination Date	Jul. 31, 2023	Jul. 31, 2023
Cash Collateral	$ 29,950	$ 29,950
Swap Value	$ 548,324	$ 332,571
Investee Returns	Total Returns	Total Returns
Realized Gain/(Loss)	$ 0	$ 0
Change in Unrealized Gain/(Loss)	215,753	(116,581)
Fair Value	578,274	362,521
Advance on swap appreciation	$ (115,000)	(115,000)
Brevan Howard [Member]
Counterparty
Notional Amount		$ 2,072,056
Termination Date		Mar. 27, 2023
Cash Collateral		$ 975,450
Swap Value		$ 1,912,559
Investee Returns		Total Returns
Realized Gain/(Loss)		$ 0
Change in Unrealized Gain/(Loss)		(67,435)
Fair Value		2,888,009
Advance on swap appreciation		$ (1,900,000)

Swap Contracts (Frontier Fund_2

Swap Contracts (Frontier Funds) (Details Textual) - Frontier Funds [Member] - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Swaps Contracts (Textual)
Description of deposits assets	6.39% or $1,649,793	2.4% or $1,177,400
Cash holding shall be in excess amount	$ 250,000
Percentage of index exposure total	40.00%
XXXIV Balanced Select Swap [Member]
Swaps Contracts (Textual)
Advance on unrealized swap appreciation	$ 6,176,555
XXXV Diversified Select Swap [Member]
Swaps Contracts (Textual)
Advance on unrealized swap appreciation	4,000,000
XXXVII Long/Short select swap [Member]
Swaps Contracts (Textual)
Advance on unrealized swap appreciation	$ 115,000

Investments in Unconsolidated_3

Investments in Unconsolidated Trading Companies and Private Investment Companies (The Series of the Frontier Funds) (Details) - The Series of Frontier Funds [Member] - USD ($)		Sep. 30, 2020	Dec. 31, 2019
Frontier Diversified Fund [Member]
Fair Value		$ 14,532	$ 24,150
Frontier Diversified Fund [Member] | Frontier Trading XXXVIII [Member]
Percentage of Series Total Capital Invested in Unconsolidated Trading Companies		0.28%	0.20%
Fair Value		$ 14,532	$ 24,150
Frontier Masters Fund [Member]
Fair Value		$ 10,133	$ 11,005
Frontier Masters Fund [Member] | Frontier Trading XXXVIII [Member]
Percentage of Series Total Capital Invested in Unconsolidated Trading Companies		0.80%	0.49%
Fair Value		$ 10,133	$ 11,005
Frontier Long/Short Commodity Fund [Member]
Fair Value		$ 14,637	$ 14,711
Frontier Long/Short Commodity Fund [Member] | Frontier Trading Company XXXVIII [Member]
Percentage of Series Total Capital Invested in Unconsolidated Trading Companies		1.16%	1.10%
Fair Value		$ 14,637	$ 14,711
Frontier Balanced Fund [Member] | Frontier Trading XXXVIII [Member]
Percentage of Series Total Capital Invested in Unconsolidated Trading Companies		0.00%	0.23%
Fair Value		$ 18,685	$ 50,867
Frontier Select Fund [Member]
Fair Value		$ 4,856	$ 505,355
Frontier Select Fund [Member] | Frontier Trading Companies XXXVIII and XXXIX [Member]
Percentage of Series Total Capital Invested in Unconsolidated Trading Companies	[1]	0.32%	17.94%
Fair Value	[1]	$ 4,856	$ 505,355
Frontier Global Fund (formerly Frontier Winton Fund) [Member]
Fair Value		$ 13,279	$ 11,818
Frontier Global Fund (formerly Frontier Winton Fund) [Member] | Frontier Trading XXXVIII [Member]
Percentage of Series Total Capital Invested in Unconsolidated Trading Companies		0.44%	0.25%
Fair Value		$ 13,279	$ 11,818
Frontier Heritage Fund [Member]
Fair Value		$ 19,916	$ 18,891
Frontier Heritage Fund [Member] | Frontier Trading XXXVIII [Member]
Percentage of Series Total Capital Invested in Unconsolidated Trading Companies		0.92%	0.57%
Fair Value		$ 19,916	$ 18,891
[1]	The investment in Frontier Trading Company XXXIX was sold as of June 30, 2020.

Investments in Unconsolidated_4

Investments in Unconsolidated Trading Companies and Private Investment Companies (The Series of the Frontier Funds) (Details 1) - Series of Frontier Funds [Member] - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Frontier Balanced Fund [Member]
Trading Commissions	$ (22,645)	$ (114,938)	$ (75,678)	$ (475,221)
Realized Gain/(Loss)	(733,788)	3,909,302	(2,066,418)	4,987,532
Change in Unrealized Gain/(Loss)	(51,110)	(3,534,803)	81,994	(3,686,778)
Net Income (Loss)	(807,543)	259,561	(2,060,102)	825,533
Frontier Balanced Fund [Member] | Frontier Trading Company II, LLC [Member]
Trading Commissions
Realized Gain/(Loss)
Change in Unrealized Gain/(Loss)				(138,899)
Net Income (Loss)				(138,899)
Frontier Balanced Fund [Member] | Frontier Trading Company XXXVIII, LLC [Member]
Trading Commissions
Realized Gain/(Loss)
Change in Unrealized Gain/(Loss)	371	52,720	(9,094)	51,988
Net Income (Loss)	371	52,720	(9,094)	51,988
Frontier Balanced Fund [Member] | Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Trading Commissions	(1,694)	(10,590)	(6,794)	(32,960)
Realized Gain/(Loss)	(175,943)	640,212	(163,459)	1,276,134
Change in Unrealized Gain/(Loss)	(21,260)	(345,285)	(16,563)	(143,617)
Net Income (Loss)	(198,897)	284,337	(186,816)	1,099,557
Frontier Balanced Fund [Member] | Galaxy Plus Fund - Doherty Feeder Fund (528) LLC [Member]
Trading Commissions		(3,924)	(2,152)	(21,819)
Realized Gain/(Loss)		(8,300)	(55,735)	37,771
Change in Unrealized Gain/(Loss)	105	50,362	25,629	(28,451)
Net Income (Loss)	105	38,138	(32,258)	(12,499)
Frontier Balanced Fund [Member] | Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC [Member]
Trading Commissions		(34,168)	(6,408)	(207,730)
Realized Gain/(Loss)		2,197,458	(718,397)	1,181,067
Change in Unrealized Gain/(Loss)	(5,782)	(2,736,881)	75,749	(2,772,516)
Net Income (Loss)	(5,782)	(573,591)	(649,056)	(1,799,179)
Frontier Balanced Fund [Member] | Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC [Member]
Trading Commissions	(4,862)	(18,141)	(20,836)	(36,877)
Realized Gain/(Loss)	(3,470)	489,021	(327,914)	1,781,745
Change in Unrealized Gain/(Loss)	(33,133)	(189,474)	156,749	(263,870)
Net Income (Loss)	(41,465)	281,406	(192,001)	1,480,998
Frontier Balanced Fund [Member] | Galaxy Plus Fund - LRR Feeder Fund (522) LLC [Member]
Trading Commissions			(502)
Realized Gain/(Loss)			(232,245)
Change in Unrealized Gain/(Loss)	(21,170)	49,989	(42,835)	336,666
Net Income (Loss)	(21,170)	49,989	(275,582)	336,666
Frontier Balanced Fund [Member] | Galaxy Plus Fund - QIM Feeder Fund (526) LLC [Member]
Trading Commissions	(709)	(25,825)	(9,264)	(75,800)
Realized Gain/(Loss)	(231,484)	(82,440)	(899,303)	(1,019,048)
Change in Unrealized Gain/(Loss)	107,025	(70,768)	157,923	114,320
Net Income (Loss)	(125,168)	(179,033)	(750,644)	(980,528)
Frontier Balanced Fund [Member] | Galaxy Plus Fund - Quantmetrics Feeder Fund (527) LLC [Member]
Trading Commissions				(25,311)
Realized Gain/(Loss)				24,230
Change in Unrealized Gain/(Loss)		(3,220)		(124,478)
Net Income (Loss)		(3,220)		(125,559)
Frontier Balanced Fund [Member] | Galaxy Plus Fund - Quest Feeder Fund (517) LLC [Member]
Trading Commissions	(3,539)	(5,556)	(5,240)	(12,342)
Realized Gain/(Loss)	(27,771)	49,061	28,824	94,895
Change in Unrealized Gain/(Loss)	22,238	(81,389)	(6,624)	(60,935)
Net Income (Loss)	(9,072)	(37,884)	16,960	21,618
Frontier Balanced Fund [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Trading Commissions	(10,562)	(16,734)	(23,203)	(62,382)
Realized Gain/(Loss)	101,830	624,290	698,761	1,610,738
Change in Unrealized Gain/(Loss)	(36,659)	(260,857)	(196,095)	(656,986)
Net Income (Loss)	54,609	346,699	479,463	891,370
Frontier Balanced Fund [Member] | Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) [Member]
Trading Commissions	(1,279)		(1,279)
Realized Gain/(Loss)	(396,950)		(396,950)
Change in Unrealized Gain/(Loss)	(62,845)		(62,845)
Net Income (Loss)	(461,074)		(461,074)
Frontier Global Fund [Member]
Trading Commissions	(3,236)	(121,925)	(11,634)	(275,586)
Realized Gain/(Loss)	(317,392)	1,258,329	(316,235)	2,465,012
Change in Unrealized Gain/(Loss)	(117,407)	(680,505)	(197,040)	(897,747)
Net Income (Loss)	(438,035)	455,899	(524,909)	1,291,679
Frontier Global Fund [Member] | Frontier Trading Company II, LLC [Member]
Trading Commissions
Realized Gain/(Loss)
Change in Unrealized Gain/(Loss)				(337,431)
Net Income (Loss)				(337,431)
Frontier Global Fund [Member] | Frontier Trading Company XXXVIII, LLC [Member]
Trading Commissions
Realized Gain/(Loss)
Change in Unrealized Gain/(Loss)	(2,540)	(1,261)	(2,994)	(15,835)
Net Income (Loss)	(2,540)	(1,261)	(2,994)	(15,835)
Frontier Global Fund [Member] | Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Trading Commissions	(3,236)	(121,925)	(11,634)	(275,586)
Realized Gain/(Loss)	(317,392)	1,258,329	(316,235)	2,465,012
Change in Unrealized Gain/(Loss)	(114,867)	(679,244)	(194,046)	(544,481)
Net Income (Loss)	(435,495)	457,160	(521,915)	1,644,945
Frontier Select Fund [Member]
Trading Commissions	(3,352)	(36,342)	(12,869)	(114,681)
Realized Gain/(Loss)	33,407	434,747	(9,253)	917,177
Change in Unrealized Gain/(Loss)	(229,837)	(253,042)	(323,617)	(335,712)
Net Income (Loss)	(199,782)	145,363	(345,739)	466,784
Frontier Select Fund [Member] | Frontier Trading Company XXXVIII, LLC [Member]
Trading Commissions
Realized Gain/(Loss)
Change in Unrealized Gain/(Loss)	(1,518)	(1,956)	(8,190)	(3,628)
Net Income (Loss)	(1,518)	(1,956)	(8,190)	(3,628)
Frontier Select Fund [Member] | Galaxy Plus Fund - Doherty Feeder Fund (528) LLC [Member]
Trading Commissions
Realized Gain/(Loss)
Change in Unrealized Gain/(Loss)	(587)		(2,203)
Net Income (Loss)	(587)		(2,203)
Frontier Select Fund [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Trading Commissions	(3,352)	(21,113)	(7,477)	(55,024)
Realized Gain/(Loss)	33,407	271,422	228,470	494,161
Change in Unrealized Gain/(Loss)	(19,556)	(171,309)	(72,058)	(218,377)
Net Income (Loss)	10,499	79,000	148,935	220,760
Frontier Select Fund [Member] | Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) [Member]
Trading Commissions
Realized Gain/(Loss)
Change in Unrealized Gain/(Loss)	(205,413)		(205,413)
Net Income (Loss)	(205,413)		(205,413)
Frontier Select Fund [Member] | Frontier Trading Company XXXIX, LLC [Member]
Trading Commissions
Realized Gain/(Loss)
Change in Unrealized Gain/(Loss)		861		40,244
Net Income (Loss)		861		40,244
Frontier Select Fund [Member] | Galaxy Plus Fund - TT Feeder Fund (531) LLC [Member]
Trading Commissions		(15,229)	(5,392)	(59,657)
Realized Gain/(Loss)		163,325	(237,723)	423,016
Change in Unrealized Gain/(Loss)	(2,763)	(80,638)	(35,753)	(153,951)
Net Income (Loss)	(2,763)	67,458	(278,868)	209,408
Frontier Heritage Fund [Member]
Trading Commissions	(4,862)	(50,393)	(11,514)	(141,814)
Realized Gain/(Loss)	(115,749)	460,448	64,369	990,492
Change in Unrealized Gain/(Loss)	254,454	(244,446)	151,754	(304,642)
Net Income (Loss)	133,843	165,609	204,609	544,036
Frontier Heritage Fund [Member] | Frontier Trading Company II, LLC [Member]
Trading Commissions
Realized Gain/(Loss)
Change in Unrealized Gain/(Loss)				(59,538)
Net Income (Loss)				(59,538)
Frontier Heritage Fund [Member] | Frontier Trading Company XXXVIII, LLC [Member]
Trading Commissions
Realized Gain/(Loss)
Change in Unrealized Gain/(Loss)	1,742	(1,353)	(1,582)	(5,732)
Net Income (Loss)	1,742	(1,353)	(1,582)	(5,732)
Frontier Heritage Fund [Member] | Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Trading Commissions	(1,524)	(31,111)	(4,298)	(72,845)
Realized Gain/(Loss)	(149,796)	249,999	(151,155)	495,954
Change in Unrealized Gain/(Loss)	275,381	(134,889)	238,686	(67,669)
Net Income (Loss)	124,061	83,999	83,233	355,440
Frontier Heritage Fund [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Trading Commissions	(3,338)	(19,282)	(7,216)	(68,969)
Realized Gain/(Loss)	34,047	210,449	215,524	494,538
Change in Unrealized Gain/(Loss)	(22,669)	(108,204)	(85,350)	(171,703)
Net Income (Loss)	8,040	82,963	122,958	253,866
Frontier Long/Short Commodity Fund [Member]
Trading Commissions	(1,504)	(23,919)	(4,740)	(85,773)
Realized Gain/(Loss)	52,373	555,947	(90,893)	302,126
Change in Unrealized Gain/(Loss)	(68,066)	(668,182)	(97,425)	(341,295)
Net Income (Loss)	(17,197)	(136,154)	(193,058)	(124,942)
Frontier Long/Short Commodity Fund [Member] | Frontier Trading Company XXXVIII, LLC [Member]
Trading Commissions
Realized Gain/(Loss)
Change in Unrealized Gain/(Loss)	(2,028)	(530)	(5,104)	(1,559)
Net Income (Loss)	(2,028)	(530)	(5,104)	(1,559)
Frontier Long/Short Commodity Fund [Member] | Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC [Member]
Trading Commissions		(13,946)	(938)	(51,774)
Realized Gain/(Loss)		470,976	(103,100)	91,669
Change in Unrealized Gain/(Loss)	(882)	(588,738)	7,770	(359,162)
Net Income (Loss)	(882)	(131,708)	(96,268)	(319,267)
Frontier Long/Short Commodity Fund [Member] | Galaxy Plus Fund - LRR Feeder Fund (522) LLC [Member]
Trading Commissions	(306)		(978)
Realized Gain/(Loss)	40,222		(76,740)
Change in Unrealized Gain/(Loss)	(55,994)	(40,791)	(71,464)	102,078
Net Income (Loss)	(16,078)	(40,791)	(149,182)	102,078
Frontier Long/Short Commodity Fund [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Trading Commissions	(1,198)	(9,973)	(2,824)	(33,999)
Realized Gain/(Loss)	12,151	84,971	88,947	210,457
Change in Unrealized Gain/(Loss)	(9,162)	(38,123)	(28,627)	(82,652)
Net Income (Loss)	1,791	36,875	57,496	93,806
Frontier Long/Short Commodity Fund [Member] | Galaxy Plus Fund - Chesapeake Feeder Fund (518) LLC [Member]
Trading Commissions
Realized Gain/(Loss)
Change in Unrealized Gain/(Loss)
Net Income (Loss)
Frontier Diversified Fund [Member]
Trading Commissions	(9,738)	(98,144)	(42,640)	(352,156)
Realized Gain/(Loss)	(289,860)	2,664,108	(921,615)	3,057,399
Change in Unrealized Gain/(Loss)	(140,848)	(2,544,357)	18,829	(2,289,404)
Net Income (Loss)	(440,446)	21,607	(945,426)	415,839
Frontier Diversified Fund [Member] | Frontier Trading Company II, LLC [Member]
Trading Commissions
Realized Gain/(Loss)
Change in Unrealized Gain/(Loss)				(76,616)
Net Income (Loss)				(76,616)
Frontier Diversified Fund [Member] | Frontier Trading Company XXXVIII, LLC [Member]
Trading Commissions
Realized Gain/(Loss)
Change in Unrealized Gain/(Loss)	(426)	(1,299)	2,597	(10,295)
Net Income (Loss)	(426)	(1,299)	2,597	(10,295)
Frontier Diversified Fund [Member] | Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Trading Commissions	(1,068)	(11,523)	(4,438)	(31,082)
Realized Gain/(Loss)	(107,528)	380,182	(76,179)	759,977
Change in Unrealized Gain/(Loss)	(19,659)	(214,655)	(9,500)	(110,678)
Net Income (Loss)	(128,255)	154,004	(90,117)	618,217
Frontier Diversified Fund [Member] | Galaxy Plus Fund - Doherty Feeder Fund (528) LLC [Member]
Trading Commissions		(4,242)	(1,348)	(18,315)
Realized Gain/(Loss)		(5,567)	(39,612)	22,480
Change in Unrealized Gain/(Loss)	182	33,921	17,858	(15,067)
Net Income (Loss)	182	24,112	(23,102)	(10,902)
Frontier Diversified Fund [Member] | Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC [Member]
Trading Commissions		(25,787)	(4,119)	(134,743)
Realized Gain/(Loss)		1,535,085	(463,144)	622,921
Change in Unrealized Gain/(Loss)	(3,544)	(1,923,484)	50,394	(1,655,383)
Net Income (Loss)	(3,544)	(414,186)	(416,869)	(1,167,205)
Frontier Diversified Fund [Member] | Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC [Member]
Trading Commissions	(2,034)	(18,205)	(13,164)	(39,203)
Realized Gain/(Loss)	(1,729)	359,073	(203,387)	1,170,183
Change in Unrealized Gain/(Loss)	(18,808)	(146,762)	60,454	(204,327)
Net Income (Loss)	(22,571)	194,106	(156,097)	926,653
Frontier Diversified Fund [Member] | Galaxy Plus Fund - LRR Feeder Fund (522) LLC [Member]
Trading Commissions			(309)
Realized Gain/(Loss)			(144,282)
Change in Unrealized Gain/(Loss)	(9,084)	21,004	(21,773)	165,797
Net Income (Loss)	(9,084)	21,004	(166,364)	165,797
Frontier Diversified Fund [Member] | Galaxy Plus Fund - QIM Feeder Fund (526) LLC [Member]
Trading Commissions	(271)	(18,552)	(4,112)	(53,774)
Realized Gain/(Loss)	(4,480)	(47,540)	(248,715)	(620,976)
Change in Unrealized Gain/(Loss)	(47,525)	(43,774)	(1,085)	70,231
Net Income (Loss)	(52,276)	(109,866)	(253,912)	(604,519)
Frontier Diversified Fund [Member] | Galaxy Plus Fund - Quantmetrics Feeder Fund (527) LLC [Member]
Trading Commissions				(13,254)
Realized Gain/(Loss)				10,639
Change in Unrealized Gain/(Loss)				(7,477)
Net Income (Loss)				(10,092)
Frontier Diversified Fund [Member] | Galaxy Plus Fund - Quest Feeder Fund (517) LLC [Member]
Trading Commissions	(2,406)	(6,204)	(3,920)	(14,152)
Realized Gain/(Loss)	(18,673)	46,394	35,081	91,712
Change in Unrealized Gain/(Loss)	13,323	(71,948)	(6,574)	(51,421)
Net Income (Loss)	(7,756)	(31,758)	24,587	26,139
Frontier Diversified Fund [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Trading Commissions	(3,320)	(13,631)	(10,591)	(47,633)
Realized Gain/(Loss)	40,922	396,481	416,995	1,000,463
Change in Unrealized Gain/(Loss)	(22,756)	(197,360)	(40,991)	(394,168)
Net Income (Loss)	14,846	185,490	365,413	558,662
Frontier Diversified Fund [Member] | Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) [Member]
Trading Commissions	(639)		(639)
Realized Gain/(Loss)	(198,372)		(198,372)
Change in Unrealized Gain/(Loss)	(32,551)		(32,551)
Net Income (Loss)	(231,562)		(231,562)
Frontier Masters Fund [Member]
Trading Commissions	(2,137)	(56,452)	(9,585)	(226,755)
Realized Gain/(Loss)	(161,906)	1,205,532	(342,246)	1,565,547
Change in Unrealized Gain/(Loss)	(47,214)	(1,168,493)	(65,312)	(1,390,143)
Net Income (Loss)	(211,257)	(19,413)	(417,143)	(51,351)
Frontier Masters Fund [Member] | Frontier Trading Company II, LLC [Member]
Trading Commissions
Realized Gain/(Loss)
Change in Unrealized Gain/(Loss)				(65,952)
Net Income (Loss)				(65,952)
Frontier Masters Fund [Member] | Frontier Trading Company XXXVIII, LLC [Member]
Trading Commissions
Realized Gain/(Loss)
Change in Unrealized Gain/(Loss)	(1,279)	(1,813)	(3,554)	(3,371)
Net Income (Loss)	(1,279)	(1,813)	(3,554)	(3,371)
Frontier Masters Fund [Member] | Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Trading Commissions	(608)	(21,521)	(2,657)	(53,384)
Realized Gain/(Loss)	(62,539)	218,469	(64,127)	450,235
Change in Unrealized Gain/(Loss)	(9,877)	(117,862)	(37,949)	(48,097)
Net Income (Loss)	(73,024)	79,086	(104,733)	348,754
Frontier Masters Fund [Member] | Galaxy Plus Fund - Doherty Feeder Fund (528) LLC [Member]
Trading Commissions
Realized Gain/(Loss)
Change in Unrealized Gain/(Loss)	(147)		(59)
Net Income (Loss)	(147)		(59)
Frontier Masters Fund [Member] | Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC [Member]
Trading Commissions		(16,746)	(1,540)	(98,334)
Realized Gain/(Loss)		734,894	(190,409)	571,048
Change in Unrealized Gain/(Loss)	(1,242)	(911,225)	30,438	(1,099,905)
Net Income (Loss)	(1,242)	(193,077)	(161,511)	(627,191)
Frontier Masters Fund [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Trading Commissions	(1,164)	(6,607)	(3,172)	(24,523)
Realized Gain/(Loss)	13,859	98,467	109,775	175,753
Change in Unrealized Gain/(Loss)	(11,510)	(58,877)	(20,607)	(10,967)
Net Income (Loss)	1,185	32,983	85,996	140,263
Frontier Masters Fund [Member] | Galaxy Plus Fund – JL Cyril Systematic Feeder Fund (547) LLC) [Member]
Trading Commissions	(365)		(365)
Realized Gain/(Loss)	(113,226)		(113,226)
Change in Unrealized Gain/(Loss)	(22,157)		(22,157)
Net Income (Loss)	(135,748)		(135,748)
Frontier Masters Fund [Member] | Galaxy Plus Fund - TT Feeder Fund (531) LLC [Member]
Trading Commissions		(11,578)	(1,851)	(50,514)
Realized Gain/(Loss)		153,702	(84,259)	368,511
Change in Unrealized Gain/(Loss)	(1,002)	(78,716)	(11,424)	(161,851)
Net Income (Loss)	(1,002)	63,408	(97,534)	156,146
Frontier Masters Fund [Member] | Galaxy Plus Fund - Chesapeake Feeder Fund (518) LLC [Member]
Trading Commissions
Realized Gain/(Loss)
Change in Unrealized Gain/(Loss)
Net Income (Loss)

Investments in Unconsolidated_5

Investments in Unconsolidated Trading Companies and Private Investment Companies (The Series of the Frontier Funds) (Details 2) - The Series of Frontier Funds [Member]	9 Months Ended
	Sep. 30, 2020
Frontier Diversified Fund [Member] | Multi-Strategy [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Diversified Fund [Member] | Multi-Strategy [Member] | Galaxy Plus Fund - JL Cyril Systematic Feeder Fund (547) LLC) [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Diversified Fund [Member] | Multi-Strategy [Member] | Galaxy Plus Fund - LRR Feeder Fund (522) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Diversified Fund [Member] | Trend Following [Member] | Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Diversified Fund [Member] | Trend Following [Member] | Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Diversified Fund [Member] | Trend Following [Member] | Galaxy Plus Fund - QIM Feeder Fund (526) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Diversified Fund [Member] | Trend Following [Member] | Galaxy Plus Fund - Quest Feeder Fund (517) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Masters Fund [Member] | Multi-Strategy [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Masters Fund [Member] | Multi-Strategy [Member] | Galaxy Plus Fund - JL Cyril Systematic Feeder Fund (547) LLC) [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Masters Fund [Member] | Trend Following [Member] | Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Weekly
Liquidity Restrictions	None
Frontier Long/Short Commodity Fund [Member] | Multi-Strategy [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Long/Short Commodity Fund [Member] | Multi-Strategy [Member] | Galaxy Plus Fund - LRR Feeder Fund (522) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Balanced Fund [Member] | Multi-Strategy [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Balanced Fund [Member] | Multi-Strategy [Member] | Galaxy Plus Fund - LRR Feeder Fund (522) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Balanced Fund [Member] | Multi-Strategy [Member] | Galaxy Plus Fund - JL Cyril Systematic Feeder Fund (547) LLC) [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Balanced Fund [Member] | Trend Following [Member] | Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Balanced Fund [Member] | Trend Following [Member] | Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Balanced Fund [Member] | Trend Following [Member] | Galaxy Plus Fund - Quest Feeder Fund (517) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Balanced Fund [Member] | Trend Following [Member] | Galaxy Plus Fund - QIM Feeder Fund (526) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Select Fund [Member] | Multi-Strategy [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Global Fund (formerly Frontier Winton Fund) [Member] | Trend Following [Member] | Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Global Fund (formerly Frontier Winton Fund) [Member] | Trend Following [Member] | Galaxy Plus Fund - JL Cyril Systematic Feeder Fund (547) LLC) [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Heritage Fund [Member] | Multi-Strategy [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Frontier Heritage Fund [Member] | Trend Following [Member] | Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None

Investments in Private Investme

Investments in Private Investment Companies (Frontier Funds) (Details) - Frontier Funds [Member] - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Trading Commissions	$ (47,474)	$ (502,113)	$ (168,660)	$ (1,671,986)
Realized Gain/(Loss)	(1,532,915)	10,488,413	(3,682,291)	14,285,285
Change in Unrealized Gain/(Loss)	(474,442)	(9,139,197)	(482,988)	(8,699,130)
Net Income (Loss)	(2,054,831)	847,103	(4,333,939)	3,914,169
Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Trading Commissions	(8,130)	(196,670)	(29,821)	(465,857)
Realized Gain/(Loss)	(813,198)	2,747,191	(771,155)	5,447,312
Change in Unrealized Gain/(Loss)	109,718	(1,491,935)	(19,372)	(914,542)
Net Income (Loss)	(711,610)	1,058,586	(820,348)	4,066,913
Galaxy Plus Fund - Doherty Feeder Fund (528) LLC [Member]
Trading Commissions		(8,166)	(3,500)	(40,134)
Realized Gain/(Loss)		(13,867)	(95,347)	60,251
Change in Unrealized Gain/(Loss)	(447)	84,283	41,225	(43,518)
Net Income (Loss)	(447)	62,250	(57,622)	(23,401)
Galaxy Plus Fund - EvE STP Feeder Fund (516) LLC [Member]
Trading Commissions		(90,647)	(13,005)	(492,581)
Realized Gain/(Loss)		4,938,413	(1,475,050)	2,466,705
Change in Unrealized Gain/(Loss)	(11,450)	(6,160,328)	164,351	(5,886,966)
Net Income (Loss)	(11,450)	(1,312,562)	(1,323,704)	(3,912,842)
Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC [Member]
Trading Commissions	(6,896)	(36,346)	(34,000)	(76,080)
Realized Gain/(Loss)	(5,199)	848,094	(531,301)	2,951,928
Change in Unrealized Gain/(Loss)	(51,941)	(336,236)	217,203	(468,197)
Net Income (Loss)	(64,036)	475,512	(348,098)	2,407,651
Galaxy Plus Fund - LRR Feeder Fund (522) LLC [Member]
Trading Commissions	(306)		(1,789)
Realized Gain/(Loss)	40,222		(453,267)
Change in Unrealized Gain/(Loss)	(86,248)	30,202	(136,072)	604,541
Net Income (Loss)	(46,332)	30,202	(591,128)	604,541
Galaxy Plus Fund - QIM Feeder Fund (526) LLC [Member]
Trading Commissions	(980)	(44,377)	(13,376)	(129,574)
Realized Gain/(Loss)	(235,964)	(129,980)	(1,148,018)	(1,640,024)
Change in Unrealized Gain/(Loss)	59,500	(114,542)	156,838	184,551
Net Income (Loss)	(177,444)	(288,899)	(1,004,556)	(1,585,047)
Galaxy Plus Fund - Quantmetrics Feeder Fund (527) LLC [Member]
Trading Commissions				(38,565)
Realized Gain/(Loss)				34,869
Change in Unrealized Gain/(Loss)		(3,220)		(131,955)
Net Income (Loss)		(3,220)		(135,651)
Galaxy Plus Fund - Quest Feeder Fund (517) LLC [Member]
Trading Commissions	(5,945)	(11,760)	(9,160)	(26,494)
Realized Gain/(Loss)	(46,444)	95,455	63,905	186,607
Change in Unrealized Gain/(Loss)	35,561	(153,337)	(13,198)	(112,356)
Net Income (Loss)	(16,828)	(69,642)	41,547	47,757
Galaxy Plus Fund - Quest FIT Feeder Fund (535) LLC [Member]
Trading Commissions
Realized Gain/(Loss)
Change in Unrealized Gain/(Loss)	(80,092)		(80,092)	(80,033)
Net Income (Loss)	(80,092)		(80,092)	(80,033)
Galaxy Plus Fund - TT Feeder Fund (531) LLC [Member]
Trading Commissions		(26,807)	(7,243)	(110,171)
Realized Gain/(Loss)		317,027	(321,982)	791,527
Change in Unrealized Gain/(Loss)	(3,765)	(159,354)	(47,177)	(315,802)
Net Income (Loss)	(3,765)	130,866	(376,402)	365,554
Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Trading Commissions	(22,934)	(87,340)	(54,483)	(292,530)
Realized Gain/(Loss)	236,216	1,686,080	1,758,472	3,986,110
Change in Unrealized Gain/(Loss)	(122,312)	(834,730)	(443,728)	(1,534,853)
Net Income (Loss)	90,970	764,010	1,260,261	2,158,727
Galaxy Plus Fund - JL Cyril Systematic Feeder Fund (547) LLC) [Member]
Trading Commissions	(2,283)		(2,283)
Realized Gain/(Loss)	(708,548)		(708,548)
Change in Unrealized Gain/(Loss)	(322,966)		(322,966)
Net Income (Loss)	$ (1,033,797)		$ (1,033,797)

Investments in Private Invest_2

Investments in Private Investment Companies (Frontier Funds) (Details 1) - Frontier Funds [Member]	9 Months Ended
	Sep. 30, 2020
Multi-Strategy [Member] | Galaxy Plus Fund - Welton GDP Feeder Fund (538) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Multi-Strategy [Member] | Galaxy Plus Fund - JL Cyril Systematic Feeder Fund (547) LLC) [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Trend Following [Member] | Galaxy Plus Fund - Aspect Feeder Fund (532) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Trend Following [Member] | Galaxy Plus Fund - Fort Contrarian Feeder Fund (510) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Trend Following [Member] | Galaxy Plus Fund - QIM Feeder Fund (526) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None
Trend Following [Member] | Galaxy Plus Fund - Quest Feeder Fund (517) LLC [Member]
Redemptions Notice Period	24 hours
Redemptions Permitted	Daily
Liquidity Restrictions	None

Transactions with Affiliates _2

Transactions with Affiliates (The Series of the Frontier Funds) (Details) - The Series of Frontier Funds [Member] - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Frontier Diversified Fund [Member]
Incentive (Rebate) Fees
Management Fee				2,668
Service Fee	2,062	11,313	12,712	34,708
Trading Fees	50,536	126,165	208,221	382,495
Frontier Masters Fund [Member]
Incentive (Rebate) Fees
Management Fee				7,665
Service Fee	407	1,256	1,501	11,010
Trading Fees	21,879	49,626	83,524	175,662
Frontier Long/Short Commodity Fund [Member]
Incentive (Rebate) Fees
Management Fee
Service Fee	108	134	330	448
Trading Fees	7,777	14,443	25,089	42,660
Frontier Balanced Fund [Member]
Incentive (Rebate) Fees
Management Fee	5,029	4,614	14,753	17,979
Service Fee	73,754	145,900	284,736	470,826
Trading Fees	127,677	236,156	465,170	763,616
Frontier Select Fund [Member]
Incentive (Rebate) Fees
Management Fee
Service Fee	13,025	27,710	51,117	79,777
Trading Fees	10,391	21,767	42,791	66,874
Frontier Global Fund [Member]
Incentive (Rebate) Fees
Management Fee
Service Fee	22,977		81,204
Trading Fees	42,481		150,154
Frontier Heritage Fund [Member]
Incentive (Rebate) Fees
Management Fee				7,289
Service Fee	15,845	22,197	51,802	66,095
Trading Fees	$ 25,094	31,932	$ 83,036	88,678
Frontier Global Fund [Member]
Incentive (Rebate) Fees
Management Fee				38,679
Service Fee		45,272		140,174
Trading Fees		$ 82,029		$ 207,342

Transactions with Affiliates _3

Transactions with Affiliates (The Series of the Frontier Funds) (Details 1) - The Series of Frontier Funds [Member] - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Frontier Diversified Fund [Member]
Incentive Fees
Management Fees
Interest Fees
Service Fees	632	3,391
Trading fees payable	16,686	35,877
Frontier Masters Fund [Member]
Incentive Fees
Management Fees
Interest Fees
Service Fees	125	204
Trading fees payable	7,360	11,673
Frontier Long/Short Commodity Fund [Member]
Incentive Fees
Management Fees
Interest Fees	44
Service Fees
Trading fees payable	2,699	3,468
Frontier Balanced Fund [Member]
Incentive Fees
Management Fees	8,903	8,795
Interest Fees	361	105
Service Fees	20,578	41,635
Trading fees payable	41,480	70,179
Frontier Select Fund [Member]
Incentive Fees
Management Fees
Interest Fees	458
Service Fees	3,701	6,906
Trading fees payable	4,088	6,000
Frontier Global Fund [Member]
Incentive Fees
Management Fees
Interest Fees	230	56
Service Fees	6,769	11,263
Trading fees payable	13,063	22,540
Frontier Heritage Fund [Member]
Incentive Fees
Management Fees
Interest Fees	326	166
Service Fees	4,544	5,362
Trading fees payable	$ 7,568	$ 11,170

Transactions with Affiliates _4

Transactions with Affiliates (The Series of the Frontier Funds) (Details 2) - The Series of Frontier Funds [Member] - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Managing Owner [Member]
Gross Amount Paid to the Managing Owner	$ 5,196	$ 6,776	$ 16,533	$ 40,684
Frontier Diversified Fund [Member] | Class 1 [Member]
Gross Amount Paid to the Managing Owner
Ratio to Average Net Assets	0.00%	0.00%	0.00%	0.00%
Frontier Diversified Fund [Member] | Class 2 [Member]
Gross Amount Paid to the Managing Owner
Ratio to Average Net Assets	0.00%	0.00%	0.00%	0.00%
Frontier Diversified Fund [Member] | Class 3 [Member]
Gross Amount Paid to the Managing Owner
Ratio to Average Net Assets	0.00%	0.00%	0.00%	0.00%
Frontier Masters Fund [Member] | Class 1 [Member]
Gross Amount Paid to the Managing Owner
Ratio to Average Net Assets	0.00%	0.00%	0.00%	0.00%
Frontier Masters Fund [Member] | Class 2 [Member]
Gross Amount Paid to the Managing Owner
Ratio to Average Net Assets	0.00%	0.00%	0.00%	0.00%
Frontier Masters Fund [Member] | Class 3 [Member]
Gross Amount Paid to the Managing Owner
Ratio to Average Net Assets	0.00%	0.00%	0.00%	0.00%
Frontier Long/Short Commodity Fund [Member] | Class 2 [Member]
Gross Amount Paid to the Managing Owner	$ 5	$ 5	$ 14	$ 14
Ratio to Average Net Assets	0.02%	0.01%	0.04%	0.02%
Frontier Long/Short Commodity Fund [Member] | Class 3 [Member]
Gross Amount Paid to the Managing Owner	$ 158	$ 129	$ 354	$ 337
Ratio to Average Net Assets	0.02%	0.01%	0.04%	0.02%
Frontier Long/Short Commodity Fund [Member] | Class 1a [Member]
Gross Amount Paid to the Managing Owner
Ratio to Average Net Assets	0.00%	0.00%	0.00%	0.00%
Frontier Long/Short Commodity Fund [Member] | Class 2a [Member]
Gross Amount Paid to the Managing Owner
Ratio to Average Net Assets	0.00%	0.00%	0.00%	0.00%
Frontier Long/Short Commodity Fund [Member] | Class 3a [Member]
Gross Amount Paid to the Managing Owner
Ratio to Average Net Assets	0.00%	0.00%	0.00%	0.00%
Frontier Balanced Fund [Member] | Class 1 [Member]
Gross Amount Paid to the Managing Owner	$ 1,019	$ 877	$ 5,419	$ 3,758
Ratio to Average Net Assets	0.01%	0.00%	0.04%	0.02%
Frontier Balanced Fund [Member] | Class 2 [Member]
Gross Amount Paid to the Managing Owner	$ 215	$ 178	$ 1,074	$ 733
Ratio to Average Net Assets	0.01%	0.00%	0.04%	0.02%
Frontier Balanced Fund [Member] | Class 2a [Member]
Gross Amount Paid to the Managing Owner	$ 2	$ 2	$ 12	$ 9
Ratio to Average Net Assets	0.00%	0.00%	0.01%	0.00%
Frontier Balanced Fund [Member] | Class 3a [Member]
Gross Amount Paid to the Managing Owner	$ 11	$ 8	$ 58	$ 31
Ratio to Average Net Assets	0.00%	0.00%	0.01%	0.00%
Frontier Balanced Fund [Member] | Class 1AP [Member]
Gross Amount Paid to the Managing Owner	$ 16	$ 17	$ 79	$ 62
Ratio to Average Net Assets	0.01%	0.00%	0.04%	0.02%
Frontier Select Fund [Member] | Class 1 [Member]
Gross Amount Paid to the Managing Owner	$ 1,349	$ 2,364	$ 3,081	$ 4,623
Ratio to Average Net Assets	0.08%	0.06%	0.14%	0.13%
Frontier Select Fund [Member] | Class 2 [Member]
Gross Amount Paid to the Managing Owner	$ 54	$ 73	$ 112	$ 144
Ratio to Average Net Assets	0.08%	0.06%	0.14%	0.13%
Frontier Select Fund [Member] | Class 1AP [Member]
Gross Amount Paid to the Managing Owner	$ 8	$ 8	$ 15	$ 11
Ratio to Average Net Assets	0.08%	0.06%	0.14%	0.16%
Frontier Global Fund [Member] | Class 1 [Member]
Gross Amount Paid to the Managing Owner	$ 901	$ 1,236	$ 2,649	$ 23,596
Ratio to Average Net Assets	0.03%	0.02%	0.07%	0.38%
Frontier Global Fund [Member] | Class 2 [Member]
Gross Amount Paid to the Managing Owner	$ 57	$ 87	$ 208	$ 1,373
Ratio to Average Net Assets	0.03%	0.02%	0.07%	0.34%
Frontier Global Fund [Member] | Class 1AP [Member]
Gross Amount Paid to the Managing Owner	$ 9	$ 8	$ 24	$ 113
Ratio to Average Net Assets	0.03%	0.02%	0.07%	0.32%
Frontier Heritage Fund [Member] | Class 1 [Member]
Gross Amount Paid to the Managing Owner	$ 1,151	$ 1,457	$ 2,800	$ 4,881
Ratio to Average Net Assets	0.05%	0.05%	0.12%	0.17%
Frontier Heritage Fund [Member] | Class 2 [Member]
Gross Amount Paid to the Managing Owner	$ 235	$ 322	$ 623	$ 991
Ratio to Average Net Assets	0.06%	0.05%	0.12%	0.16%
Frontier Heritage Fund [Member] | Class 1AP [Member]
Gross Amount Paid to the Managing Owner	$ 4	$ 5	$ 11	$ 8
Ratio to Average Net Assets	0.05%	0.05%	0.12%	0.16%

Transactions with Affiliates _5

Transactions with Affiliates (The Series of the Frontier Funds) (Details Textual) - The Series of Frontier Funds [Member] - USD ($)	1 Months Ended			9 Months Ended		12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2017
Transactions with Affiliates (Textual)
Description of incentive fee percentage				The incentive fee is 25% for the Frontier Balanced Fund and the Frontier Diversified Fund and 20% for the Frontier Global Fund, Frontier Heritage Fund, Frontier Select Fund, Frontier Long/Short Commodity Fund and Frontier Masters Fund.
Description of range of incentive fee percentage				(i) swaps owned by Frontier Diversified Fund was 20-25% per annum, (ii) swaps owned by Frontier Balanced Fund was 20-25% per annum, (iii) swaps owned by Frontier Long/Short Commodity Fund was 25% per annum, and (iv) swaps owned by Frontier Heritage Fund was 15% per annum, and the Managing Owner has waived the entire incentive fee due to it from those Series in respect of such Series’ investment in swaps. In each case, the embedded incentive fee was accrued based on the net new trading profits of the swap.
Description of service fees				Investors who have purchased Class 1 or Class 1a Units of Frontier Diversified Fund, Frontier Masters Fund, and Frontier Long/Short Commodity Fund are charged a service fee of up to two percent (2.0%) annually of the NAV (of the purchase price, in case of the initial service fee) of each Unit purchased, for the benefit of selling agents selling such Class 1 or Class 1a Units. The initial service fee, which is amortized monthly at an annual rate of up to two percent (2.0%) of the average daily NAV of Class 1 or Class 1a of such Series, is prepaid to the Managing Owner by each Series, and paid to the selling agents by the Managing Owner in the month following sale; provided, however, that investors who redeem all or a portion of their Class 1 and Class 1a Units of any Series during the first twelve (12) months following the effective date of their purchase are subject to a redemption fee of up to two percent (2.0%) of the purchase price at which such investor redeemed to reimburse the Managing Owner for the then-unamortized balance of the prepaid initial service fee. Investors who have purchased Class 1 or Class 1a Units of Frontier Balanced Fund, Frontier Heritage Fund, Frontier Select Fund, and Frontier Global Fund are charged a service fee of up to three percent (3.0%) annually of the NAV (of the purchase price, in case of the initial service fee) of each Unit purchased, for the benefit of selling agents selling such Class 1 or Class 1a Units. The initial service fee, which is amortized monthly at an annual rate of up to three percent (3.0%) of the average daily NAV of Class 1 or Class 1a of such Series, is prepaid to the Managing Owner by each Series, and paid to the selling agents by the Managing Owner in the month following sale; provided, however, that investors who redeem all or a portion of their Class 1 and Class 1a Units of any Series during the first twelve (12) months following the effective date of their purchase are subject to a redemption fee of up to three percent (3.0%) of the purchase price at which such investor redeemed to reimburse the Managing Owner for the then-unamortized balance of the prepaid initial service fee. With respect to Class 2 and Class 2a Units of any Series, the Managing Owner pays an ongoing service fee to selling agents of up to one half percent (0.5%) annually of the NAV of each Class 2 or Class 2a Unit (of which 0.25% will be charged to Limited Owners holding Class 2 Units of the Frontier Diversified Fund and Frontier Masters Fund or Class 2a Units of the Frontier Long/Short Commodity Fund sold) until such Class 2 or Class 2a Units which are subject to the fee limitation are reclassified as Class 3 or Class 3a Units of the applicable Series for administrative purposes. Currently the service fee is not charged to Class 1AP investors. The Managing Owner may also pay selling agents certain additional fees and expenses for administrative and other services rendered and expenses incurred by such selling agents.
Description of interest income				Aggregate interest income from all sources, including U.S. Treasury Securities assets net of premiums and cash held at clearing brokers, of up to the first 2% (annualized) of average net assets less any fair market value related to swaps is paid to the Managing Owner by the Frontier Balanced Fund (Class 1 and Class 2), Frontier Long/Short Commodity Fund (Class 2 and Class 3), Frontier Global Fund, Frontier Select Fund, and Frontier Heritage Fund. For the Frontier Diversified Fund, Frontier Long/Short Commodity Fund (Class 1a, Class 2a and Class 3a), Frontier Masters Fund, and Frontier Balanced Fund (Class 1AP, Class 2a and Class 3a), 100% of the interest is retained by the respective Series.
Prepaid initial service fees				$ 0	$ 0
Frontier Balanced Fund [Member]
Transactions with Affiliates (Textual)
Subscriptions in advance for service fee				341,603
Frontier Long/Short Commodity Fund [Member]
Transactions with Affiliates (Textual)
Subscriptions in advance for service fee				409
Frontier Diversified Fund [Member]
Transactions with Affiliates (Textual)
Percentage of interest			0.25%
Subscriptions in advance for service fee				$ 22,650
Frontier Masters Fund [Member]
Transactions with Affiliates (Textual)
Percentage of interest						0.25%
Subscriptions in advance for service fee				$ 31,725
Frontier Global Fund [Member]
Transactions with Affiliates (Textual)
Subscriptions in advance for service fee				153,743
Frontier Select Fund [Member]
Transactions with Affiliates (Textual)
Subscriptions in advance for service fee				19,010
Frontier Heritage Fund [Member]
Transactions with Affiliates (Textual)
Subscriptions in advance for service fee				$ 61,853
Managing Owner [Member]
Transactions with Affiliates (Textual)
Percentage of minimum purchase commitment				1.00%
Percentage of contributes funds to trust				1.00%
Percentage of interest in specific series of trust				1.00%
Managing Owner [Member] | Frontier Balanced Fund [Member]
Transactions with Affiliates (Textual)
Percentage of FCM fee				2.25%
Managing Owner [Member] | Frontier Balanced Fund [Member] | Swap [Member]
Transactions with Affiliates (Textual)
Percentage of management fee	1.00%			1.00%
Managing Owner [Member] | Frontier Balanced Fund [Member] | Class 1AP [Member]
Transactions with Affiliates (Textual)
Percentage of interest				1.00%
Percentage of management fee				0.50%
Managing Owner [Member] | Frontier Balanced Fund [Member] | Class 2a [Member]
Transactions with Affiliates (Textual)
Percentage of interest				1.00%
Percentage of management fee				0.50%
Managing Owner [Member] | Frontier Balanced Fund [Member] | Class 2 [Member]
Transactions with Affiliates (Textual)
Percentage of management fee				0.50%
Managing Owner [Member] | Frontier Balanced Fund [Member] | Class 1 [Member]
Transactions with Affiliates (Textual)
Percentage of management fee				0.50%
Managing Owner [Member] | Frontier Balanced Fund [Member] | Class 3a [Member]
Transactions with Affiliates (Textual)
Percentage of management fee				0.50%
Managing Owner [Member] | Frontier Long/Short Commodity Fund [Member]
Transactions with Affiliates (Textual)
Percentage of interest				1.00%
Percentage of FCM fee				2.25%
Managing Owner [Member] | Frontier Long/Short Commodity Fund [Member] | Swap [Member]
Transactions with Affiliates (Textual)
Percentage of management fee	1.50%			1.50%
Managing Owner [Member] | Frontier Long/Short Commodity Fund [Member] | Class 2a [Member]
Transactions with Affiliates (Textual)
Percentage of management fee				2.00%
Managing Owner [Member] | Frontier Long/Short Commodity Fund [Member] | Class 2 [Member]
Transactions with Affiliates (Textual)
Percentage of management fee				3.50%
Managing Owner [Member] | Frontier Long/Short Commodity Fund [Member] | Class 3 [Member]
Transactions with Affiliates (Textual)
Percentage of management fee				3.50%
Managing Owner [Member] | Frontier Long/Short Commodity Fund [Member] | Class 3a [Member]
Transactions with Affiliates (Textual)
Percentage of management fee				2.00%
Managing Owner [Member] | Frontier Long/Short Commodity Fund [Member] | Class 1a [Member]
Transactions with Affiliates (Textual)
Percentage of management fee				2.00%
Managing Owner [Member] | Frontier Diversified Fund [Member]
Transactions with Affiliates (Textual)
Percentage of interest				1.00%
Percentage of management fee				0.75%
Percentage of FCM fee				2.25%
Managing Owner [Member] | Frontier Diversified Fund [Member] | Swap [Member]
Transactions with Affiliates (Textual)
Percentage of management fee	1.00%			1.00%
Managing Owner [Member] | Frontier Masters Fund [Member]
Transactions with Affiliates (Textual)
Percentage of interest				1.00%
Percentage of management fee				2.00%
Percentage of FCM fee				2.25%
Managing Owner [Member] | Frontier Global Fund [Member]
Transactions with Affiliates (Textual)
Percentage of management fee				2.00%
Percentage of FCM fee				2.25%
Managing Owner [Member] | Frontier Select Fund [Member]
Transactions with Affiliates (Textual)
Percentage of management fee				2.50%
Percentage of FCM fee				2.25%
Managing Owner [Member] | Frontier Select Fund [Member] | Swap [Member]
Transactions with Affiliates (Textual)
Percentage of management fee	1.00%			1.00%
Managing Owner [Member] | Frontier Heritage Fund [Member]
Transactions with Affiliates (Textual)
Percentage of management fee				2.50%
Percentage of FCM fee				2.25%

Transactions with Affiliates (F

Transactions with Affiliates (Frontier Funds) (Details) - Managing Owner [Member] - Frontier Funds [Member] - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of contributes funds to trust			1.00%
Percentage of minimum purchase commitment			1.00%
Percentage of interest in specific series of trust			1.00%
Trust had payable for incentive fees	$ 0		$ 0		$ 0
Trust had payable for management fees	8,903		8,903		8,795
Trust had payable for interest fees	1,419		1,419		327
Trust had payable for service fees	92,944		92,944		68,762
Trust had payable for trading fees	36,349		36,349		$ 160,907
Trust paid for incentive fees	0	$ 0	0	$ 0
Trust paid for management fees	5,029	4,614	14,753	74,280
Trust paid for risk analysis fees	1,509	1,385	4,426	4,257
Trust paid for service fees	128,178	253,782	483,402	803,038
Trust paid for trading fees	$ 285,835	$ 562,118	1,057,985	1,727,327
Prepaid initial service fees			0	0
Trust paid			$ 5,857	$ 5,857
Class 1 [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of service fee	3.00%		3.00%
Class 1a Units [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of service fee	2.00%		2.00%
Class 2 Units [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of service fee	0.25%		0.25%
Frontier Balanced Fund [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of FCM fee	2.25%		2.25%
Percentage of series NAV	0.12%		0.12%
Percentage of incentive fee	25.00%		25.00%
Frontier Balanced Fund [Member] | Swap [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of management fee	1.00%		1.00%		1.00%
Frontier Balanced Fund [Member] | Swap [Member] | Maximum [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of incentive fee	25.00%		25.00%
Frontier Balanced Fund [Member] | Swap [Member] | Minimum [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of incentive fee	20.00%		20.00%
Frontier Balanced Fund [Member] | Class 1AP Units [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of interest			1.00%
Frontier Balanced Fund [Member] | Class 2a Units [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of interest			1.00%
Frontier Balanced Fund [Member] | Class 1 and Class 2 [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of management fee	0.50%		0.50%
Percentage of aggregate interest income	2.00%		2.00%
Frontier Balanced Fund [Member] | Class 1AP, Class 2a and Class 3a [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of management fee	1.00%		1.00%
Percentage of interest is retained by respective series	100.00%		100.00%
Frontier Long/Short Commodity Fund [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of FCM fee	2.25%		2.25%
Percentage of series NAV	0.12%		0.12%
Percentage of incentive fee	20.00%		20.00%
Frontier Long/Short Commodity Fund [Member] | Swap [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of management fee	1.50%		1.50%		1.50%
Percentage of incentive fee	25.00%		25.00%
Frontier Long/Short Commodity Fund [Member] | Class 1AP Units [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of interest			1.00%
Frontier Long/Short Commodity Fund [Member] | Class 2a Units [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of interest			1.00%
Frontier Long/Short Commodity Fund [Member] | Class 1a, Class 2a and Class 3a [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of management fee	2.00%		2.00%
Percentage of interest is retained by respective series	100.00%		100.00%
Frontier Long/Short Commodity Fund [Member] | Class 2 and Class 3 [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of management fee	3.50%		3.50%
Percentage of aggregate interest income	2.00%		2.00%
Frontier Diversified Fund [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of management fee	0.75%		0.75%
Percentage of FCM fee	2.25%		2.25%
Percentage of series NAV	0.12%		0.12%
Percentage of incentive fee	25.00%		25.00%
Frontier Diversified Fund [Member] | Swap [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of management fee	1.00%		1.00%		1.00%
Frontier Diversified Fund [Member] | Swap [Member] | Maximum [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of incentive fee	25.00%		25.00%
Frontier Diversified Fund [Member] | Swap [Member] | Minimum [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of incentive fee	20.00%		20.00%
Frontier Diversified Fund [Member] | Class 1AP Units [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of interest			1.00%
Frontier Diversified Fund [Member] | Class 2a Units [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of interest			1.00%
Frontier Diversified Fund [Member] | Class 1a, Class 2a and Class 3a [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of interest is retained by respective series					100.00%
Frontier Masters Fund [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of management fee	2.00%		2.00%
Percentage of FCM fee	2.25%		2.25%
Percentage of series NAV	0.12%		0.12%
Percentage of incentive fee	20.00%		20.00%
Frontier Masters Fund [Member] | Class 1AP Units [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of interest			1.00%
Frontier Masters Fund [Member] | Class 2a Units [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of interest			1.00%
Frontier Masters Fund [Member] | Class 1AP, Class 2a and Class 3a [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of interest is retained by respective series					100.00%
Frontier Global Fund (formerly Frontier Winton Fund) [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of management fee	2.00%		2.00%
Percentage of FCM fee	2.25%		2.25%
Percentage of series NAV	0.12%		0.12%
Percentage of incentive fee	20.00%		20.00%
Percentage of aggregate interest income	2.00%		2.00%
Frontier Heritage Fund [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of management fee	2.50%		2.50%
Percentage of FCM fee	2.25%		2.25%
Percentage of series NAV	0.12%		0.12%
Percentage of incentive fee	20.00%		20.00%
Percentage of aggregate interest income	2.00%		2.00%
Frontier Heritage Fund [Member] | Swap [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of management fee	1.00%		1.00%		1.00%
Percentage of incentive fee	15.00%		15.00%
Frontier Select Fund [Member]
Transactions with Affiliates (Frontier Funds) (Textual)
Percentage of management fee	2.50%		2.50%
Percentage of FCM fee	2.25%		2.25%
Percentage of series NAV	0.12%		0.12%
Percentage of incentive fee	20.00%		20.00%
Percentage of aggregate interest income	2.00%		2.00%

Financial Highlights (The Serie

Financial Highlights (The Series of the Frontier Funds) (Details) - Series of Frontier Funds [Member] - $ / shares		3 Months Ended						9 Months Ended
		Sep. 30, 2020		Sep. 30, 2019		Jun. 30, 2019		Sep. 30, 2020		Sep. 30, 2019
Frontier Diversified Fund [Member] | Class 1 [Member]
Net asset value	[1]	$ 74.09		$ 102.44				$ 101.1		$ 102.25
Net operating results:
Interest income	[1]	0.01		0.01				0.02		0.06
Expenses	[1]	(1.46)		(1.69)				(4.88)		(5.12)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(6.17)		1.96				(29.76)		5.54
Net income/(loss)	[1]	(7.61)		0.28				(34.62)		0.47
Net asset value	[1]	$ 66.48		$ 102.72		$ 102.44		$ 66.48		$ 102.72
Ratios to average net assets
Net investment income/(loss)		(8.16%)		(6.57%)				(10.89%)		(665.00%)
Expenses before incentive fees	[2],[3]	8.24%		6.62%				10.94%		672.00%
Expenses after incentive fees	[2],[3]	8.24%		6.62%				10.94%		672.00%
Total return before incentive fee	[4]	(10.28%)		0.27%				(34.25%)		46.00%
Total return after incentive fees	[4]	(10.28%)		0.27%				(34.25%)		46.00%
Incentive fee per share
Incentive Fee to ANA		0.00%						0.00%
Frontier Diversified Fund [Member] | Class 2 [Member]
Net asset value	[1]	$ 89.88		$ 122.11				$ 121.58		$ 120.84
Net operating results:
Interest income	[1]	0.02		0.01				0.03		0.07
Expenses	[1]	(0.76)		(1.12)				(2.82)		(3.35)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(8.14)		1.98				(37.79)		5.42
Net income/(loss)	[1]	(8.88)		0.87				(40.58)		2.14
Net asset value	[1]	$ 81		$ 122.98		122.11		$ 81		$ 122.98
Ratios to average net assets
Net investment income/(loss)		(3.45%)		(3.64%)				(0.0535%)		(3.63%)
Expenses before incentive fees	[2],[3]	3.53%		3.69%				5.40%		3.70%
Expenses after incentive fees	[2],[3]	3.53%		3.69%				5.40%		3.70%
Total return before incentive fee	[4]	(9.88%)		0.71%				(33.38%)		1.77%
Total return after incentive fees	[4]	(9.88%)		0.71%				(33.38%)		1.77%
Incentive fee per share
Incentive Fee to ANA		0.00%						0.00%
Frontier Diversified Fund [Member] | Class 3 [Member]
Net asset value	[1]	$ 84.09		$ 113.96				$ 113.61		$ 112.62
Net operating results:
Interest income	[1]	0.02		0.01				0.02		0.06
Expenses	[1]	(0.71)		(1.05)				(2.50)		(3.13)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(7.57)		1.91				(35.30)		5.29
Net income/(loss)	[1]	(8.26)		0.88				(37.78)		2.22
Net asset value	[1]	$ 75.83		$ 114.84		113.96		$ 75.83		$ 114.84
Ratios to average net assets
Net investment income/(loss)		(3.45%)		(3.64%)				(5.35%)		(3.63%)
Expenses before incentive fees	[2],[3]	3.53%		3.69%				5.40%		3.70%
Expenses after incentive fees	[2],[3]	3.53%		3.69%				5.40%		3.70%
Total return before incentive fee	[4]	(9.83%)		0.76%				(33.25%)		1.97%
Total return after incentive fees	[4]	(9.83%)		0.76%				(33.25%)		1.97%
Incentive fee per share
Incentive Fee to ANA		0.00%						0.00%
Frontier Masters Fund [Member] | Class 1 [Member]
Net asset value	[1]	$ 61.92		$ 87.33				$ 72.28		$ 91.1
Net operating results:
Interest income	[1]	0.03		0.05				0.08		0.09
Expenses	[1]	(3.18)		(1.53)				(11.57)		(5.44)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(6.62)		(1.12)				(8.64)		(1.02)
Net income/(loss)	[1]	(9.77)		(2.60)				(20.13)		(6.37)
Net asset value	[1]	$ 52.15		$ 84.73		87.33		$ 52.15		$ 84.73
Ratios to average net assets
Net investment income/(loss)		(21.78%)		(6.61%)				(35.07%)		(8.37%)
Expenses before incentive fees	[2],[3]	22.02%		6.84%				35.33%		8.51%
Expenses after incentive fees	[2],[3]	22.02%		6.84%				35.33%		8.51%
Total return before incentive fee	[4]	(15.78%)		(2.97%)				(27.85%)		(6.99%)
Total return after incentive fees	[4]	(15.78%)		(2.97%)				(27.85%)		(6.99%)
Incentive fee per share
Incentive Fee to ANA		0.00%						0.00%
Frontier Masters Fund [Member] | Class 2 [Member]
Net asset value	[1]	$ 75.13		$ 104.1				$ 87.18		$ 107.68
Net operating results:
Interest income	[1]	0.04		0.06				0.1		0.11
Expenses	[1]	(1.05)		(1.37)				(3.75)		(4.68)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(10.57)		(1.04)				(19.99)		(1.36)
Net income/(loss)	[1]	(11.58)		(2.35)				(23.63)		(5.93)
Net asset value	[1]	$ 63.55		$ 101.75		104.1		$ 63.55		$ 101.75
Ratios to average net assets
Net investment income/(loss)		(5.83%)		(4.94%)				(9.11%)		(5.87%)
Expenses before incentive fees	[2],[3]	6.06%		5.17%				9.37%		6.01%
Expenses after incentive fees	[2],[3]	6.06%		5.17%				9.37%		6.01%
Total return before incentive fee	[4]	(15.41%)		(2.26%)				(27.11%)		(5.51%)
Total return after incentive fees	[4]	(15.41%)		(2.26%)				(27.11%)		(5.51%)
Incentive fee per share
Incentive Fee to ANA		0.00%						0.00%
Frontier Masters Fund [Member] | Class 3 [Member]
Net asset value	[1]	$ 70.56		$ 97.53				$ 81.78		$ 100.77
Net operating results:
Interest income	[1]	0.04		0.06				0.1		0.1
Expenses	[1]	(1)		(1.28)				(3.52)		(4.38)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(9.87)		(0.91)				(18.63)		(1.10)
Net income/(loss)	[1]	(10.83)		(2.14)				(22.05)		(5.38)
Net asset value	[1]	$ 59.73		$ 95.39		97.53		$ 59.73		$ 95.39
Ratios to average net assets
Net investment income/(loss)		(5.83%)		(4.94%)				(9.11%)		(5.87%)
Expenses before incentive fees	[2],[3]	6.06%		5.17%				9.37%		6.01%
Expenses after incentive fees	[2],[3]	6.06%		5.17%				9.37%		6.01%
Total return before incentive fee	[4]	(15.35%)		(2.19%)				(26.97%)		(5.34%)
Total return after incentive fees	[4]	(15.35%)		(2.19%)				(26.97%)		(5.34%)
Incentive fee per share
Incentive Fee to ANA		0.00%						0.00%
Frontier Long/Short Commodity Fund [Member] | Class 2 [Member]
Net asset value	[1]	$ 83.27		$ 98.52				$ 81.6		$ 98.82
Net operating results:
Interest income	[1]	0.06		0.03				0.13		0.08
Expenses	[1]	(0.50)		(0.66)				(1.59)		(1.92)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(1.42)		(9.13)				1.27		(8.22)
Net income/(loss)	[1]	(1.86)		(9.76)				(0.19)		(10.06)
Net asset value	[1]	$ 81.41		$ 88.76		98.52		$ 81.41		$ 88.76
Ratios to average net assets
Net investment income/(loss)		(2.17%)		(2.57%)				(3.53%)		(2.58%)
Expenses before incentive fees	[2],[3]	2.45%		2.70%				3.84%		2.70%
Expenses after incentive fees	[2],[3]	2.45%		2.70%				3.84%		2.70%
Total return before incentive fee	[4]	(2.23%)		(9.91%)				(0.23%)		(10.18%)
Total return after incentive fees	[4]	(2.23%)		(9.91%)				(0.23%)		(10.18%)
Incentive fee per share
Incentive Fee to ANA		0.00%						0.00%
Frontier Long/Short Commodity Fund [Member] | Class 3 [Member]
Net asset value	[1]	$ 87.35		$ 103.34				$ 85.64		$ 103.66
Net operating results:
Interest income	[1]	0.06		0.03				0.13		0.09
Expenses	[1]	(0.52)		(0.69)				(1.67)		(2.02)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(1.49)		(9.52)				1.3		(8.56)
Net income/(loss)	[1]	(1.95)		(10.18)				(0.24)		(10.50)
Net asset value	[1]	$ 85.4		$ 93.16		103.34		$ 85.4		$ 93.16
Ratios to average net assets
Net investment income/(loss)		(2.17%)		(2.57%)				(3.53%)		(2.58%)
Expenses before incentive fees	[2],[3]	2.45%		2.70%				3.84%		2.70%
Expenses after incentive fees	[2],[3]	2.45%		2.70%				3.84%		2.70%
Total return before incentive fee	[4]	(2.23%)		(9.85%)				(0.28%)		(10.13%)
Total return after incentive fees	[4]	(2.23%)		(9.85%)				(0.28%)		(10.13%)
Incentive fee per share
Incentive Fee to ANA		0.00%						0.00%
Frontier Long/Short Commodity Fund [Member] | Class 1a [Member]
Net asset value	[1]	$ 44.58		$ 52.86				$ 44.2		$ 56.8
Net operating results:
Interest income	[1]	0.03		0.02				0.07		0.04
Expenses	[1]	(0.69)		(0.76)				(2.13)		(2.45)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(43.93)	[5]	(4.53)				(42.14)		(6.83)
Net income/(loss)	[1]	(44.58)	[5]	(5.30)				(44.20)	[5]	(9.24)
Net asset value	[1]	$ 0	[5]	$ 47.56		52.86		$ 0	[5]	$ 47.56
Ratios to average net assets
Net investment income/(loss)		(6.06%)		(5.71%)				(9.27%)		(6.35%)
Expenses before incentive fees	[2],[3]	6.34%		5.84%				9.58%		6.46%
Expenses after incentive fees	[2],[3]	6.34%		5.84%				9.58%		6.46%
Total return before incentive fee	[4]	10001.00%	[5]	(9.99%)				(2.46%)		(16.27%)
Total return after incentive fees	[4]	(10001.00%)	[5]	(9.99%)				2.46%		(16.27%)
Incentive fee per share
Incentive Fee to ANA		0.00%						0.00%
Frontier Long/Short Commodity Fund [Member] | Class 2a [Member]
Net asset value	[1]	$ 53.49		$ 62.24				$ 52.55		$ 66.52
Net operating results:
Interest income	[1]	0.04		0.02				0.08		0.05
Expenses	[1]	(0.32)		(0.42)				(1.02)		(1.21)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(0.82)		(5.54)				0.78		(9.06)
Net income/(loss)	[1]	(1.11)		(5.94)				(0.17)		(10.22)
Net asset value	[1]	$ 52.39		$ 56.3		62.24		$ 52.39		$ 56.3
Ratios to average net assets
Net investment income/(loss)		(2.17%)		(2.57%)				(3.53%)		(2.58%)
Expenses before incentive fees	[2],[3]	2.45%		2.70%				3.84%		2.70%
Expenses after incentive fees	[2],[3]	2.45%		2.70%				3.84%		2.70%
Total return before incentive fee	[4]	(2.07%)		(9.54%)				(0.31%)		(15.36%)
Total return after incentive fees	[4]	(2.07%)		(9.54%)				(0.31%)		(15.36%)
Incentive fee per share
Incentive Fee to ANA		0.00%						0.00%
Frontier Long/Short Commodity Fund [Member] | Class 3a [Member]
Net asset value	[1]	$ 56.38		$ 65.45				$ 55.31		$ 69.83
Net operating results:
Interest income	[1]	0.04		0.02				0.09		0.05
Expenses	[1]	(0.34)		(0.45)				(1.08)		(1.28)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(0.82)		(5.78)				0.94		(9.37)
Net income/(loss)	[1]	(1.12)		(6.21)				(0.05)		(10.59)
Net asset value	[1]	$ 55.27		$ 59.24		65.45		$ 55.27		$ 59.24
Ratios to average net assets
Net investment income/(loss)		(2.17%)		(2.57%)				(3.53%)		(2.58%)
Expenses before incentive fees	[2],[3]	2.45%		2.70%				3.84%		2.70%
Expenses after incentive fees	[2],[3]	2.45%		2.70%				3.84%		2.70%
Total return before incentive fee	[4]	(1.98%)		(9.49%)				(0.08%)		(15.17%)
Total return after incentive fees	[4]	(1.98%)		(9.49%)				(0.08%)		(15.17%)
Incentive fee per share
Incentive Fee to ANA		0.00%						0.00%
Frontier Balanced Fund [Member] | Class 1 [Member]
Net asset value	[1]	$ 78.59		$ 116.36				$ 117.23		$ 117.63
Net operating results:
Interest income	[1]	0		0.05				0.04		0.16
Expenses	[1]	(1.39)		(1.90)				(4.79)		(6.03)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(5.38)		2.18				(40.66)		4.94
Net income/(loss)	[1]	(6.77)		0.33				(45.41)		(0.94)
Net asset value	[1]	$ 71.82		$ 116.69		116.36		$ 71.82		$ 116.69
Ratios to average net assets
Net investment income/(loss)		(7.30%)		(6.29%)				(10.42%)		(6.77%)
Expenses before incentive fees	[2],[3]	7.31%		6.47%				10.50%		6.96%
Expenses after incentive fees	[2],[3]	7.31%		6.47%				10.50%		6.96%
Total return before incentive fee	[4]	(8.61%)		0.28%				(38.74%)		(0.80%)
Total return after incentive fees	[4]	(8.61%)		0.28%				(38.74%)		(0.80%)
Incentive fee per share
Incentive Fee to ANA		0.00%						0.00%
Frontier Balanced Fund [Member] | Class 2 [Member]
Net asset value	[1]	$ 126.44		$ 181.66				$ 185.82		$ 180.94
Net operating results:
Interest income	[1]	0.01		0.08				0.06		0.25
Expenses	[1]	(20.94)		(1.67)				(4.34)		(5.34)
Net gain/(loss) on investments, net of non-controlling interests	[1]	10.92		3.49				(65.11)		7.71
Net income/(loss)	[1]	(10.02)		1.9				(69.40)		2.62
Net asset value	[1]	$ 116.42		$ 183.56		181.66		$ 116.42		$ 183.56
Ratios to average net assets
Net investment income/(loss)		(4.27%)		(3.48%)				(5.92%)		(3.77%)
Expenses before incentive fees	[2],[3]	4.27%		3.66%				6.00%		3.95%
Expenses after incentive fees	[2],[3]	4.27%		3.66%				6.00%		3.95%
Total return before incentive fee	[4]	(7.92%)		1.05%				(37.35%)		1.45%
Total return after incentive fees	[4]	(7.92%)		1.05%				(37.35%)		1.45%
Incentive fee per share
Incentive Fee to ANA		0.00%						0.00%
Frontier Balanced Fund [Member] | Class 2a [Member]
Net asset value	[1]	$ 109.61		$ 157.49				$ 161.04		$ 156.81
Net operating results:
Interest income	[1]	0		0.07				0.05		0.21
Expenses	[1]	(1.13)		(1.45)				(3.79)		(4.62)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(7.58)		2.96				(56.40)		6.66
Net income/(loss)	[1]	(8.71)		1.58				(60.14)		2.26
Net asset value	[1]	$ 100.90		$ 159.07		157.49		$ 100.90		$ 159.07
Ratios to average net assets
Net investment income/(loss)		(4.27%)		(3.48%)				(5.92%)		(3.77%)
Expenses before incentive fees	[2],[3]	4.27%		3.66%				6.00%		3.95%
Expenses after incentive fees	[2],[3]	4.27%		3.66%				6.00%		3.95%
Total return before incentive fee	[4]	(7.95%)		1.00%				(37.34%)		1.44%
Total return after incentive fees	[4]	(7.95%)		1.00%				(37.34%)		1.44%
Incentive fee per share
Incentive Fee to ANA		0.00%						0.00%
Frontier Balanced Fund [Member] | Class 3a [Member]
Net asset value	[1]	$ 109.24		$ 156.91				$ 160.5		$ 156.26
Net operating results:
Interest income	[1]	0		0.07				0.05		0.21
Expenses	[1]	(1.13)		(1.44)				(3.76)		(4.62)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(7.51)		3.01				(56.20)		6.69
Net income/(loss)	[1]	(8.64)		1.64				(59.90)		2.29
Net asset value	[1]	$ 100.60		$ 158.55		156.91		$ 100.60		$ 158.55
Ratios to average net assets
Net investment income/(loss)		(4.27%)		(3.48%)				(5.92%)		(3.77%)
Expenses before incentive fees	[2],[3]	4.27%		3.66%				6.00%		3.95%
Expenses after incentive fees	[2],[3]	4.27%		3.66%				6.00%		3.95%
Total return before incentive fee	[4]	(7.91%)		1.05%				(37.32%)		1.47%
Total return after incentive fees	[4]	(7.91%)		1.05%				(37.32%)		1.47%
Incentive fee per share
Incentive Fee to ANA		0.00%						0.00%
Frontier Balanced Fund [Member] | Class 1AP [Member]
Net asset value	[1]	$ 93.76		$ 134.69				$ 137.81		$ 134.16
Net operating results:
Interest income	[1]	0		0.06				0.04		0.18
Expenses	[1]	(0.97)		(1.24)				(3.21)		(3.97)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(6.46)		2.59				(48.31)		5.72
Net income/(loss)	[1]	(7.42)		1.41				(51.47)		1.94
Net asset value	[1]	$ 86.34		$ 136.1		134.69		$ 86.34		$ 136.1
Ratios to average net assets
Net investment income/(loss)		(4.27%)		(3.48%)				(5.92%)		(3.77%)
Expenses before incentive fees	[2],[3]	4.27%		3.66%				6.00%		3.95%
Expenses after incentive fees	[2],[3]	4.27%		3.66%				6.00%		3.95%
Total return before incentive fee	[4]	(7.92%)		1.05%				(37.35%)		1.45%
Total return after incentive fees	[4]	(7.92%)		1.05%				(37.35%)		1.45%
Incentive fee per share
Incentive Fee to ANA		0.00%						0.00%
Frontier Select Fund [Member] | Class 1 [Member]
Net asset value	[1]	$ 61.04		$ 76.03				$ 66.56		$ 71.41
Net operating results:
Interest income	[1]	0		0				0		0
Expenses	[1]	(0.78)		(1.01)				(2.61)		(2.98)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(6.91)		2.74				(10.60)		9.33
Net income/(loss)	[1]	(7.69)		1.73				(13.21)		6.35
Net asset value	[1]	$ 53.35		$ 77.76		76.03		$ 53.35		$ 77.76
Ratios to average net assets
Net investment income/(loss)		(5.35%)		(5.45%)				(8.15%)		(5.44%)
Expenses before incentive fees	[2],[3]	5.35%		5.45%				8.15%		5.44%
Expenses after incentive fees	[2],[3]	5.35%		5.45%				8.15%		5.44%
Total return before incentive fee	[4]	(12.60%)		2.28%				(19.84%)		8.89%
Total return after incentive fees	[4]	(12.60%)		2.28%				(19.84%)		8.89%
Incentive fee per share
Incentive Fee to ANA		0.00%						0.00%
Frontier Select Fund [Member] | Class 2 [Member]
Net asset value	[1]	$ 85.20		$ 116.96				$ 103.94		$ 108.18
Net operating results:
Interest income	[1]	0		0				0		0
Expenses	[1]	(0.54)		(0.67)				(1.83)		(2.04)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(11.01)		4.23				(16.92)		14.38
Net income/(loss)	[1]	(11.55)		3.56				(18.74)		12.34
Net asset value	[1]	$ 85.20		$ 120.52		116.96		$ 85.20		$ 120.52
Ratios to average net assets
Net investment income/(loss)		(2.32%)		(2.36%)				(3.64%)		(2.44%)
Expenses before incentive fees	[2],[3]	2.32%		2.36%				3.64%		2.43%
Expenses after incentive fees	[2],[3]	2.32%		2.36%				3.64%		2.43%
Total return before incentive fee	[4]	(11.93%)		3.04%				(18.03%)		11.41%
Total return after incentive fees	[4]	(11.93%)		3.04%				(18.03%)		11.41%
Incentive fee per share
Incentive Fee to ANA		0.00%						0.00%
Frontier Select Fund [Member] | Class 1AP [Member]
Net asset value	[1]	$ 72.91		$ 88.34				$ 78.51		$ 82.48
Net operating results:
Interest income	[1]	0		0				0		0
Expenses	[1]	(0.41)		(0.51)				(1.37)		(1.63)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(8.30)		3.2				(12.93)		10.18
Net income/(loss)	[1]	(8.70)		2.69				(14.31)		8.55
Net asset value	[1]	$ 64.20		$ 91.03		88.34		$ 64.20		$ 91.03
Ratios to average net assets
Net investment income/(loss)		(2.32%)		(2.36%)				(3.64%)		(2.43%)
Expenses before incentive fees	[2],[3]	2.32%		2.36%				3.64%		2.43%
Expenses after incentive fees	[2],[3]	2.32%		2.36%				3.64%		2.43%
Total return before incentive fee	[4]	(11.93%)		3.05%				(18.22%)		10.37%
Total return after incentive fees	[4]	(11.93%)		3.05%				(18.22%)		10.37%
Incentive fee per share
Incentive Fee to ANA		0.00%						0.00%
Frontier Global Fund [Member] | Class 1 [Member]
Net asset value	[1]	$ 104.18		$ 143.64				$ 131.52		$ 131.57
Net operating results:
Interest income	[1]	0		0				0		0
Expenses	[1]	(2.33)		(2.98)				(7.81)		(8.33)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(15.17)		11.36				(19.53)		28.78
Net income/(loss)	[1]	(17.50)		8.38				(27.34)		20.45
Net asset value	[1]	$ 104.18		$ 177.16		143.64		$ 104.18		$ 177.16
Ratios to average net assets
Net investment income/(loss)		(8.26%)						(12.20%)		(7.93%)
Expenses before incentive fees	[2],[3]	8.26%		(8.43%)				12.20%		7.93%
Expenses after incentive fees	[2],[3]	8.26%		8.43%				12.20%		7.93%
Total return before incentive fee		(14.38%)	[2],[3]	8.43%	[2],[3]			(20.79%)	[4]	15.54%	[4]
Total return after incentive fees		(14.38%)	[2],[3]	5.84%	[4]			(20.79%)	[4]	15.54%	[4]
Incentive fee per share				5.84%	[4]
Incentive Fee to ANA		0.00%						0.00%
Frontier Global Fund [Member] | Class 2 [Member]
Net asset value	[1]	$ 156.22		$ 207.48				$ 192.82		$ 187.17
Net operating results:
Interest income	[1]	0		0				0		0
Expenses	[1]	(2.20)		(2.69)				(7.38)		(7.50)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(22.67)		16.41				(29.22)		41.53
Net income/(loss)	[1]	(24.87)		13.72				(36.60)		34.03
Net asset value	[1]	$ 156.22		$ 221.2		207.48		$ 156.22		$ 221.2
Ratios to average net assets
Net investment income/(loss)		(5.23%)						(7.68%)		(4.93%)
Expenses before incentive fees	[2],[3]	5.23%		(5.29%)				7.68%		4.93%
Expenses after incentive fees	[2],[3]	5.23%		5.29%				7.68%		4.93%
Total return before incentive fee		(13.74%)	[2],[3]	5.29%	[2],[3]			(18.98%)	[4]	18.18%	[4]
Total return after incentive fees		(13.74%)	[2],[3]	6.61%	[4]			(18.98%)	[4]	18.18%	[4]
Incentive fee per share				6.61%	[4]
Incentive Fee to ANA		0.00%						0.00%
Frontier Global Fund [Member] | Class 1AP [Member]
Net asset value	[1]	$ 125.39		$ 166.13				$ 154.43		$ 149.92
Net operating results:
Interest income	[1]	0		0				0		0
Expenses	[1]	(1.77)		(2.16)				(5.84)		(6.05)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(18.19)		13.19				(23.20)		33.29
Net income/(loss)	[1]	(19.96)		11.03				(29.04)		27.24
Net asset value	[1]	$ 125.39		$ 177.16		166.13		$ 125.39		$ 177.16
Ratios to average net assets
Net investment income/(loss)		(5.23%)						(7.68%)		(4.93%)
Expenses before incentive fees	[2],[3]	5.23%		(5.29%)				7.68%		4.93%
Expenses after incentive fees	[2],[3]	5.23%		5.29%				7.68%		4.93%
Total return before incentive fee		(13.73%)	[2],[3]	5.29%	[2],[3]			(18.80%)	[4]	18.17%	[4]
Total return after incentive fees		(13.73%)	[2],[3]	6.64%	[4]			(18.80%)	[4]	18.17%	[4]
Incentive fee per share				6.64%	[4]
Incentive Fee to ANA		0.00%						0.00%
Frontier Heritage Fund [Member] | Class 1 [Member]
Net asset value	[1]	$ 86.88		$ 112.93		109.6		$ 97.54		$ 99.83
Net operating results:
Interest income	[1]	0				0		0		0
Expenses	[1]	(1.62)				(1.81)		(5.22)		(5.13)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(8.01)				5.14		(5.44)		18.23
Net income/(loss)	[1]	(9.63)				3.33		(10.65)		13.1
Net asset value	[1]	$ 86.88		112.93		$ 112.93		$ 86.88		$ 112.93
Ratios to average net assets
Net investment income/(loss)		(7.04%)						(10.42%)		(6.62%)
Expenses before incentive fees	[2],[3]	7.04%				(6.96%)		10.42%		6.62%
Expenses after incentive fees	[2],[3]	7.04%				6.96%		10.42%		6.62%
Total return before incentive fee		(9.98%)	[2],[3]			6.96%	[4]	(10.92%)	[4]	13.12%	[4]
Total return after incentive fees		(9.98%)	[2],[3]			3.04%	[4]	(10.92%)	[4]	13.12%	[4]
Incentive fee per share						3.04%
Incentive Fee to ANA		0.00%						0.00%
Frontier Heritage Fund [Member] | Class 2 [Member]
Net asset value	[1]	$ 154.24		176.48		$ 169.96		$ 153.59		$ 152.53
Net operating results:
Interest income	[1]	0				0		0		0
Expenses	[1]	(1.49)				(1.51)		(4.74)		(4.35)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(12.85)				8.03		(8.95)		28.3
Net income/(loss)	[1]	(14.34)				6.52		(13.69)		23.95
Net asset value	[1]	$ 139.90		176.48		$ 176.48		$ 139.90		$ 176.48
Ratios to average net assets
Net investment income/(loss)		(4.01%)						(5.90%)		(3.61%)
Expenses before incentive fees	[2],[3]	4.01%				(377.00%)		5.90%		3.61%
Expenses after incentive fees	[2],[3]	4.01%				377.00%		5.90%		3.61%
Total return before incentive fee		(9.29%)	[2],[3]			377.00%	[4]	(8.91%)	[4]	15.70%	[4]
Total return after incentive fees		(9.29%)	[2],[3]			384.00%	[4]	(8.91%)	[4]	15.70%	[4]
Incentive fee per share						384.00%
Incentive Fee to ANA		0.00%						0.00%
Frontier Heritage Fund [Member] | Class 1AP [Member]
Net asset value	[1]	$ 115.25		131.16		$ 126.34		$ 114.15		$ 111.78
Net operating results:
Interest income	[1]	0				0		0		0
Expenses	[1]	(1.10)				(1.16)		(3.52)		(3.49)
Net gain/(loss) on investments, net of non-controlling interests	[1]	(9.62)				5.98		(6.11)		22.87
Net income/(loss)	[1]	(10.72)				4.82		(9.62)		19.38
Net asset value	[1]	$ 104.53		$ 131.16		$ 131.16		$ 104.53		$ 131.16
Ratios to average net assets
Net investment income/(loss)		(4.01%)						(5.90%)		(3.61%)
Expenses before incentive fees	[2],[3]	4.01%				(377.00%)		5.90%		3.61%
Expenses after incentive fees	[2],[3]	4.01%				377.00%		5.90%		3.61%
Total return before incentive fee		(9.30%)	[2],[3]			377.00%	[4]	(8.43%)	[4]	17.34%	[4]
Total return after incentive fees		(9.30%)	[2],[3]			382.00%	[4]	(8.43%)	[4]	17.34%	[4]
Incentive fee per share						382.00%
Incentive Fee to ANA		0.00%						0.00%
[1]	Interest income and expenses per unit are calculated by dividing these amounts by the average number of units outstanding during the period. The net gain/(loss) on investments, net of non-controlling interests is a balancing amount necessary to reconcile the change in net asset value per unit with the other per unit information.
[2]	Expense ratios do not include management and incentive fees at the Galaxy Plus entities. The ratios would have been higher had those expenses been included. The impact of those fees are included in the total return.
[3]	Expense ratios do not reflect interest allocated to the Managing Owner as such expenses are not included in the Statements of Operations of the Series, see footnote 6.
[4]	Impact of incentive fee computed using average net assets, otherwise computed using average units outstanding during the period prior to the effects of any non-controlling transactions. An owner's total returns may vary from the above returns based on the timing of contributions and withdrawals. Total returns are not annualized.
[5]	Class 1a of Frontier Long/Short Commodity Fund was liquidated as of September 30, 2020.

Financial Highlights ( Frontier

Financial Highlights ( Frontier Funds) (Details 1) - Frontier Funds [Member]		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net investment income/(loss)	[1]	(5.84%)	(5.29%)	(5.70%)	(5.56%)
Expenses before incentive fees	[2]	(5.88%)	(5.40%)	(5.69%)	(5.73%)
Expenses after incentive fees	[2]	(5.88%)	(5.40%)	(5.74%)	(5.73%)
Total return before incentive fees	[3]	(10.08%)	0.90%	(36.52%)	1.97%
Total return after incentive fees	[3]	(10.08%)	0.90%	(36.56%)	1.97%
[1]	Annualized with the exception of incentive fees.
[2]	Expense ratios do not reflect interest allocated to the Managing Owner as such expenses are not included in the Consolidated Statements of Operations of the Trust. See footnote 5.
[3]	Total returns are not annualized.

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities (The Series of the Frontier Funds) (Details) - The Series of Frontier Funds [Member] - Frontier Balanced Fund [Member] - Number	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative Numbers of Instruments Bought	600	138	578	617
Derivative Numbers of Instruments Sold	726	246	568	827

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities (The Series of the Frontier Funds) (Details 1) - The Series of Frontier Funds [Member] - Frontier Balanced Fund [Member] - Realized Trading Revenue from Futures, Forwards and Options [Member] - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Realized trading income/(loss)	[1]	$ 167,553	$ (92,058)	$ 588,112	$ 165,840
Agriculturals [Member]
Realized trading income/(loss)		107,606	(54,047)	132,659	9,995
Currencies [Member]
Realized trading income/(loss)		36,116	(161,381)	15,372	(280,126)
Energies [Member]
Realized trading income/(loss)		(29,190)	(13,734)	(15,120)	(21,731)
Interest rates [Member]
Realized trading income/(loss)		(80,947)	148,301	56,888	460,843
Metals [Member]
Realized trading income/(loss)		105,688	44,521	427,135	58,195
Stock indices [Member]
Realized trading income/(loss)		$ 28,280	$ (55,718)	$ (28,822)	$ (61,336)
[1]	Amounts recorded in the Statements of Operations under Net realized gain(loss) on futures forwards and options.

Derivative Instruments and He_5

Derivative Instruments and Hedging Activities (The Series of the Frontier Funds) (Details 2) - The Series of Frontier Funds [Member] - Frontier Balanced Fund [Member] - Unrealized Trading Revenue from Futures, Forwards and Options [Member] - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Change in unrealized trading income/(loss)	[1]	$ (53,834)	$ (28,271)	$ (130,869)	$ (224,786)
Agriculturals [Member]
Change in unrealized trading income/(loss)		(73,529)	3,305	(58,614)	3,305
Currencies [Member]
Change in unrealized trading income/(loss)		(12,856)	47,292	(27,439)	(63,185)
Energies [Member]
Change in unrealized trading income/(loss)		(35,050)	4,480	(39,325)	20,847
Interest rates [Member]
Change in unrealized trading income/(loss)		46,611	(81,857)	76,647	(89,117)
Metals [Member]
Change in unrealized trading income/(loss)		28,731	19,396	(91,914)	(80,268)
Stock indices [Member]
Change in unrealized trading income/(loss)		$ (7,741)	$ (20,887)	$ 9,775	$ (16,368)
[1]	Amounts recorded in the Statements of Operations under Net change in open trade equity/(deficit).

Derivative Instruments and He_6

Derivative Instruments and Hedging Activities (The Series of the Frontier Funds) (Details 3) - The Series of Frontier Funds [Member] - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Frontier Balanced Fund [Member] | Open Trade Equity/(Deficit) [Member]
Gross Amounts of recognized Derivative Assets/ Liabilities	$ 1,111,441	$ 154,778
Gross Amounts offset in the Statements of Financial Condition	(1,171,216)	(38,594)
Net Amounts Presented in the Statements of Financial Condition	(59,775)	116,184
Frontier Balanced Fund [Member] | Swap Contracts [Member]
Gross Amounts of recognized Derivative Assets/ Liabilities	7,319,420	11,944,753
Gross Amounts offset in the Statements of Financial Condition
Net Amounts Presented in the Statements of Financial Condition	7,319,420	11,944,753
Frontier Diversified Fund [Member] | Swap Contracts [Member]
Gross Amounts of recognized Derivative Assets/ Liabilities	4,553,855	6,384,583
Gross Amounts offset in the Statements of Financial Condition
Net Amounts Presented in the Statements of Financial Condition	4,553,855	6,384,583
Frontier Long/Short Commodity Fund [Member] | Swap Contracts [Member]
Gross Amounts of recognized Derivative Assets/ Liabilities	578,274	362,521
Gross Amounts offset in the Statements of Financial Condition
Net Amounts Presented in the Statements of Financial Condition	$ 578,274	362,521
Frontier Heritage Fund [Member] | Swap Contracts [Member]
Gross Amounts of recognized Derivative Assets/ Liabilities		2,888,009
Gross Amounts offset in the Statements of Financial Condition
Net Amounts Presented in the Statements of Financial Condition		$ 2,888,009

Derivative Instruments and He_7

Derivative Instruments and Hedging Activities (The Series of the Frontier Funds) (Details Textual)	9 Months Ended
	Sep. 30, 2020
The Series of Frontier Funds [Member]
Derivative Instruments and Hedging Activities (Textual)
Embedded management fees, description	There are embedded management fees in transacting these swaps ranging from 1% to 1.5% based on fair value of swaps and the embedded incentive fees ranging from 15% to 25% based on net new trading profits on swaps.

Derivative Instruments and He_8

Derivative Instruments and Hedging Activities (Frontier Funds) (Details) - Frontier Fund [Member] - Realized Trading Revenue from Futures, Forwards and Options [Member] - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019		Sep. 30, 2020		Sep. 30, 2019
Realized trading income/(loss)	$ 167,553	$ (92,058)	[1]	$ 588,112	[1]	$ (1,190,910)	[1]
Agriculturals [Member]
Realized trading income/(loss)	107,606	(54,047)		132,659		(49,568)
Currencies [Member]
Realized trading income/(loss)	36,116	(161,381)		15,372		(852,338)
Energies [Member]
Realized trading income/(loss)	(29,190)	(13,734)		(15,120)		(606,626)
Interest rates [Member]
Realized trading income/(loss)	(80,947)	148,301		56,888		1,013,511
Metals [Member]
Realized trading income/(loss)	105,688	44,521		427,135		(566,993)
Stock indices [Member]
Realized trading income/(loss)	$ 28,280	$ (55,718)		$ (28,822)		$ (128,896)
[1]	Amounts recorded in the Statements of Operations under Net realized gain(loss) on futures forwards and options.

Derivative Instruments and He_9

Derivative Instruments and Hedging Activities (Frontier Funds) (Details 1) - Frontier Fund [Member] - USD ($)	3 Months Ended				9 Months Ended
	Sep. 30, 2020		Sep. 30, 2019		Sep. 30, 2020		Sep. 30, 2019
Unrealized trading income/(loss)	$ (474,442)		$ (9,139,197)		$ (482,988)		$ (8,699,130)
Net Change in Open Trade Equity from Futures, Forwards and Options [Member]
Unrealized trading income/(loss)	(53,834)	[1]	(28,271)	[1]	(130,869)	[2]	477,877	[1]
Agriculturals [Member] | Net Change in Open Trade Equity from Futures, Forwards and Options [Member]
Unrealized trading income/(loss)	(73,529)		3,305		(58,614)		(93,622)
Currencies [Member] | Net Change in Open Trade Equity from Futures, Forwards and Options [Member]
Unrealized trading income/(loss)	(12,856)		47,292		(27,439)		217,927
Energies [Member] | Net Change in Open Trade Equity from Futures, Forwards and Options [Member]
Unrealized trading income/(loss)	(35,050)		4,480		(39,325)		226,118
Interest rates [Member] | Net Change in Open Trade Equity from Futures, Forwards and Options [Member]
Unrealized trading income/(loss)	46,611		(81,857)		76,647		(415,874)
Metals [Member] | Net Change in Open Trade Equity from Futures, Forwards and Options [Member]
Unrealized trading income/(loss)	28,731		19,396		(91,914)		508,370
Stock indices [Member] | Net Change in Open Trade Equity from Futures, Forwards and Options [Member]
Unrealized trading income/(loss)	$ (7,741)		$ (20,887)		$ 9,775		$ 34,958
[1]	Amounts recorded in the Statements of Operations under Net change in open trade equity/(deficit).
[2]	Amounts recorded in the Statements of Operations under Net change in open trade equity/(deficit)

Derivative Instruments and H_10

Derivative Instruments and Hedging Activities (Frontier Funds) (Details 2) - Frontier Fund [Member] - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Open Trade Equity/(Deficit) [Member]
Gross Amounts of recognized Derivative Assets/Liabilities	$ 1,111,441	$ 154,778
Gross Amounts offset in the Statements of Financial Condition	(1,171,216)	(38,594)
Net Amounts Presented in the Statements of Financial Condition	(59,775)	116,184
Swap [Member]
Gross Amounts of recognized Derivative Assets/Liabilities	12,451,549	21,579,866
Gross Amounts offset in the Statements of Financial Condition
Net Amounts Presented in the Statements of Financial Condition	$ 12,451,549	$ 21,579,866

Derivative Instruments and H_11

Derivative Instruments and Hedging Activities (Frontier Funds) (Details Textual) - Frontier Fund [Member] - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments and Hedging Activities (Frontier Funds) (Textual)
Monthly average of forwards, options and futures contracts bought	$ 600	$ 138	$ 578	$ 617
Monthly average of forwards, options and futures contracts sold	$ 726	$ 246	$ 568	$ 827
Minimum [Member]
Derivative Instruments and Hedging Activities (Frontier Funds) (Textual)
Percentage of embedded management fees	1.00%		1.00%
Percentage of fair value of swaps and embedded incentive fees	15.00%		15.00%
Maximum [Member]
Derivative Instruments and Hedging Activities (Frontier Funds) (Textual)
Percentage of embedded management fees	15.00%		15.00%
Percentage of fair value of swaps and embedded incentive fees	25.00%		25.00%

Trading Activities and Relate_2

Trading Activities and Related Risks (The Series of the Frontier Funds) (Details)	9 Months Ended
	Sep. 30, 2020
The Series of Frontier Funds [Member]
Trading Activities and Related Risks (Textual)
Trading activities and related risks ,description	If the markets should move against all of the futures positions held by a Trading Company or Galaxy Plus entity in respect of any Series at the same time, and if the Trading Advisor(s) of such Trading Company or Galaxy Plus entity are unable to offset such futures interests positions, such Trading Company or Galaxy Plus entity could lose all of its assets and the holders of Units of such Series would realize a 100% loss. The Managing Owner will seek to minimize market risk through real-time monitoring of open positions and the level of diversification of each Trading Advisor's portfolio. It is anticipated that any Trading Advisor's margin-to-equity ratio will typically not exceed approximately 35% although the actual ratio could be higher or lower from time to time.

Trading Activities and Relate_3

Trading Activities and Related Risks (Frontier Funds) (Details)	9 Months Ended
	Sep. 30, 2020
Frontier Fund [Member]
Trading Activities and Related Risks (Frontier Funds) (Textual)
Description of trading activities and related risks	If the markets should move against all of the futures positions held by a Trading Company or Galaxy Plus entity in respect of any Series at the same time, and if the Trading Advisor(s) of such Trading Company or Galaxy Plus entity are unable to offset such futures interests positions, such Trading Company or Galaxy Plus entity could lose all of its assets and the holders of Units of such Series would realize a 100% loss. The Managing Owner will seek to minimize market risk through real-time monitoring of open positions and the level of diversification of each Trading Advisor's portfolio. It is anticipated that any Trading Advisor's margin-to-equity ratio will typically not exceed approximately 35% although the actual ratio could be higher or lower from time to time.

Subsequent Events (The Series o

Subsequent Events (The Series of the Frontier Funds) (Details) - The Series of Frontier Funds [Member] - Subsequent Event [Member]	1 Months Ended
	Nov. 10, 2020USD ($)
Frontier Balanced Fund [Member]
Subsequent Events (The Series of the Frontier Funds) (Textual)
Trust paid in redemptions	$ 257,775
Frontier Diversified Fund [Member]
Subsequent Events (The Series of the Frontier Funds) (Textual)
Trust paid in redemptions	111,437
Frontier Heritage Fund [Member]
Subsequent Events (The Series of the Frontier Funds) (Textual)
Trust paid in redemptions	12,801
Frontier Long/Short Commodity Fund [Member]
Subsequent Events (The Series of the Frontier Funds) (Textual)
Trust paid in redemptions	12,679
Frontier Masters Fund [Member]
Subsequent Events (The Series of the Frontier Funds) (Textual)
Trust paid in redemptions	81,549
Frontier Select Fund [Member]
Subsequent Events (The Series of the Frontier Funds) (Textual)
Trust paid in redemptions	32,147
Frontier Global Fund (formerly Frontier Winton Fund) [Member]
Subsequent Events (The Series of the Frontier Funds) (Textual)
Trust paid in redemptions	$ 73,480

Subsequent Events (Frontier Fun

Subsequent Events (Frontier Funds) (Details)	1 Months Ended
	Nov. 10, 2020USD ($)
Frontier Funds [Member] | The Trust [Member] | Subsequent Event [Member]
Subsequent Events (Frontier Funds) (Textual)
Trust paid in redemptions	$ 581,868