viking20210628.htm - Generated by SEC Publisher for SEC Filing

Item 1. SCHEDULE OF INVESTMENTS
KANSAS MUNICIPAL FUND
Schedule of Investments April 30, 2021 (unaudited)
		Principal		Fair
		Amount		Value
MUNICIPAL BONDS (91.4%)

Education (4.1%)
Johnson County Community College Foundation Inc 4.000% 11/15/2023	$	870,000	$	952,850
Kansas Development Finance Authority 2.000% 05/01/2035 Callable @ 100.000 05/01/2029		960,000		985,085
Kansas Development Finance Authority 3.000% 06/01/2031 Callable @ 100.000 06/01/2028		500,000		552,150
Kansas Development Finance Authority 3.000% 10/01/2044 Callable @ 100.000 10/01/2027		500,000		514,360
Kansas Development Finance Authority 5.000% 06/01/2027 Callable @ 100.000 06/01/2021		250,000		251,010
				3,255,455
General Obligation (38.4%)
*Allen County Unified School District No 257 3.000% 09/01/2038 Callable @ 100.000 09/01/2028		1,000,000		1,064,840
Bourbon County Unified School District No 234 Fort Scott 5.000% 09/01/2027 Callable @ 100.000 09/01/2024		250,000		284,908
Bourbon County Unified School District No 234 Fort Scott 5.000% 09/01/2028 Callable @ 100.000 09/01/2024		250,000		286,603
City of Arkansas City KS 2.000% 08/01/2036 Callable @ 100.000 02/01/2028		500,000		511,775
City of Bonner Springs KS 2.000% 09/01/2040 Callable @ 100.000 09/01/2027		325,000		326,089
City of Bonner Springs KS 3.000% 09/01/2044 Callable @ 100.000 09/01/2028		1,060,000		1,146,273
City of Burlingame KS 3.000% 09/01/2045 Callable @ 100.000 09/01/2027		365,000		377,286
City of Hillsboro KS 3.000% 09/01/2024		100,000		107,089
City of Hillsboro KS 3.000% 09/01/2027 Callable @ 100.000 09/01/2026		225,000		245,052
City of Hillsboro KS 3.000% 09/01/2028 Callable @ 100.000 09/01/2026		230,000		246,277
City of Hillsboro KS 3.000% 09/01/2029 Callable @ 100.000 09/01/2026		240,000		254,287
City of Hutchinson KS 2.500% 10/01/2040 Callable @ 100.000 10/01/2029		420,000		437,627
City of Ozawkie KS 3.000% 09/01/2039 Callable @ 100.000 09/01/2027		335,000		356,001
City of Prairie Village KS 3.000% 09/01/2049 Callable @ 100.000 09/01/2027		1,500,000		1,616,325
City of South Hutchinson KS 4.000% 10/01/2038 Callable @ 100.000 10/01/2025		355,000		389,034
City of Topeka KS 3.000% 08/15/2021		1,000,000		1,008,100
City of Topeka KS 3.000% 08/15/2022		500,000		518,145
City of Wichita KS 2.000% 12/01/2038 Callable @ 100.000 12/01/2028		250,000		251,168
City of Wichita KS 4.500% 09/01/2022		150,000		150,075
City of Wichita KS 4.750% 09/01/2027		180,000		180,167
County of Clay KS 4.000% 10/01/2036 Callable @ 100.000 10/01/2024		500,000		539,305
County of Johnson KS 2.000% 09/01/2034 Callable @ 100.000 09/01/2029		500,000		525,400
County of Linn KS 3.000% 07/01/2036 Callable @ 100.000 07/01/2029		1,100,000		1,193,016
County of Reno KS 3.000% 09/01/2036 Callable @ 100.000 09/01/2028		250,000		273,645
County of Scott KS 5.000% 04/01/2032 Callable @ 100.000 04/01/2026		500,000		590,380
County of Thomas KS 3.000% 12/01/2047 Callable @ 100.000 12/01/2029		1,000,000		1,060,190
Douglas County Unified School District No 348 Baldwin City 4.000% 09/01/2030 Callable @ 100.000 09/01/2025		250,000		281,478
Geary County Unified School District No 475 4.000% 09/01/2033 Callable @ 100.000 09/01/2025		350,000		390,180
Greenwood County Unified School District No 389 Eureka 4.000% 09/01/2021		150,000		151,749
Johnson & Miami Counties Unified School District No 230 Spring Hills 5.000% 09/01/2037 Callable @ 100.000 09/01/2027		500,000		623,055
Johnson & Miami Counties Unified School District No 230 Spring Hills 5.000% 09/01/2039 Callable @ 100.000 09/01/2027		2,000,000		2,525,880
Johnson County Unified School District No 231 Gardner Edgerton 5.000% 10/01/2025 Callable @ 100.000 10/01/2023		250,000		279,890
Leavenworth County Unified School District No 453 4.000% 09/01/2037 Callable @ 100.000 09/01/2026		650,000		767,254
Leavenworth County Unified School District No 464 4.000% 09/01/2031 Callable @ 100.000 09/01/2027		500,000		581,730
Linn County Unified School District No 362 Prairie View 3.000% 09/01/2035 Callable @ 100.000 09/01/2028		500,000		547,050
Lyon County Unified School District No 253 Emporia 4.000% 09/01/2039 Callable @ 100.000 09/01/2027		750,000		862,260
Lyon County Unified School District No 253 Emporia 4.000% 09/01/2048 Callable @ 100.000 09/01/2027		1,000,000		1,093,910
Miami County Unified School District No 368 Paola 5.000% 09/01/2027 Callable @ 100.000 09/01/2021		10,000		10,166
Miami County Unified School District No 416 Louisburg 3.000% 09/01/2040 Callable @ 100.000 09/01/2028		400,000		426,220
Miami County Unified School District No 416 Louisburg 3.000% 09/01/2041 Callable @ 100.000 09/01/2028		400,000		425,096
Rice County Unified School District No 444 4.000% 09/01/2031 Callable @ 100.000 09/01/2027		710,000		832,660
Riley County Unified School District No 378 Riley 4.000% 09/01/2028 Callable @ 100.000 09/01/2027		680,000		807,983
Riley County Unified School District No 383 Manhattan Ogden 4.000% 09/01/2039 Callable @ 100.000 09/01/2027		1,000,000		1,141,880
Sedgwick County Unified School District No 262 Valley Center 5.000% 09/01/2035 Callable @ 100.000 09/01/2024		405,000		467,208
Seward County Unified School District No 480 Liberal 5.000% 09/01/2033 Callable @ 100.000 09/01/2022		85,000		90,572
Seward County Unified School District No 480 Liberal 5.000% 09/01/2034 Callable @ 100.000 09/01/2022		500,000		534,450
Wyandotte County Kansas City Unified Government 2.250% 08/01/2037 Callable @ 100.000 08/01/2028		410,000		423,616
Wyandotte County Kansas City Unified Government 2.250% 08/01/2038 Callable @ 100.000 08/01/2028		1,000,000		1,027,700
Wyandotte County Kansas City Unified Government 2.375% 08/01/2040 Callable @ 100.000 08/01/2028		1,000,000		1,025,860
Wyandotte County Unified School District No 500 Kansas City 5.000% 09/01/2026		1,000,000		1,225,970
				30,482,872
Health Care (13.8%)
Ashland Public Building Commission 5.000% 09/01/2030 Callable @ 100.000 09/01/2023		1,020,000		1,093,501
Ashland Public Building Commission 5.000% 09/01/2032 Callable @ 100.000 09/01/2024		550,000		605,600
Ashland Public Building Commission 5.000% 09/01/2035 Callable @ 100.000 09/01/2023		500,000		532,005
City of Lawrence KS 5.000% 07/01/2043 Callable @ 100.000 07/01/2028		1,500,000		1,776,570
City of Manhattan KS 5.000% 11/15/2023 Callable @ 100.000 11/15/2022		250,000		268,718
City of Manhattan KS 5.000% 11/15/2024 Callable @ 100.000 11/15/2022		250,000		268,340
City of Manhattan KS 5.000% 11/15/2029 Callable @ 100.000 11/15/2022		500,000		530,885
City of Olathe KS 4.000% 09/01/2028 Callable @ 100.000 09/01/2021		250,000		252,615
City of Olathe KS 4.000% 09/01/2030 Callable @ 100.000 09/01/2021		295,000		297,820
Kansas Development Finance Authority 4.125% 11/15/2027 Callable @ 100.000 11/15/2022		100,000		105,273
University of Kansas Hospital Authority 3.000% 03/01/2041 Callable @ 100.000 03/01/2030		500,000		531,810
University of Kansas Hospital Authority 4.000% 09/01/2040 Callable @ 100.000 09/01/2025		500,000		544,290
University of Kansas Hospital Authority 4.000% 09/01/2048 Callable @ 100.000 03/01/2029		1,000,000		1,122,510
University of Kansas Hospital Authority 5.000% 09/01/2035 Callable @ 100.000 09/01/2025		500,000		571,980
University of Kansas Hospital Authority 5.000% 09/01/2048 Callable @ 100.000 03/01/2029		2,000,000		2,421,280
				10,923,196
Other Revenue (8.8%)
City of Manhattan KS 4.500% 12/01/2025		500,000		500,075
City of Manhattan KS 5.000% 12/01/2026		310,000		310,295
*City of Manhattan KS 5.000% 12/01/2032		1,000,000		1,000,240
City of Wichita KS 4.000% 09/01/2038 Callable @ 100.000 09/01/2027		1,000,000		1,125,200
#Clay Center Public Building Commission 3.000% 09/01/2027		290,000		325,830
Dickson County Public Building Commission 4.000% 08/01/2038 Callable @ 100.000 08/01/2028		750,000		862,800
Hoisington Public Building Commission 3.000% 11/01/2040 Callable @ 100.000 11/01/2029		660,000		694,967
Hoisington Public Building Commission 3.000% 11/01/2045 Callable @ 100.000 11/01/2029		500,000		521,575
Johnson County Public Building Commission 4.000% 09/01/2022		405,000		425,764
Kansas Development Finance Authority 3.000% 11/01/2033 Callable @ 100.000 11/01/2027		1,000,000		1,067,300
Washington County Public Building Commission 4.000% 09/01/2028 Callable @ 100.000 09/01/2022		100,000		104,402
				6,938,447
Pre-Refunded (12.4%)
Bourbon County Unified School District No 234 Fort Scott 5.000% 09/01/2029 Callable @ 100.000 09/01/2024		250,000		288,248
Bourbon County Unified School District No 234 Fort Scott 5.000% 09/01/2030 Callable @ 100.000 09/01/2024		250,000		288,248
Bourbon County Unified School District No 234 Fort Scott 5.000% 09/01/2031 Callable @ 100.000 09/01/2024		500,000		576,495
City of Olathe KS 4.000% 09/01/2030 Callable @ 100.000 09/01/2021		150,000		151,883
City of Wichita KS 5.000% 11/15/2029 Callable @ 100.000 11/15/2021		300,000		307,593
*Franklin County Unified School District No 290 Ottawa 5.000% 09/01/2040 Callable @ 100.000 09/01/2025		3,000,000		3,574,020
Jackson County Unified School District No 336 Holton 5.000% 09/01/2029 Callable @ 100.000 09/01/2022		135,000		143,987
Jackson County Unified School District No 336 Holton 5.000% 09/01/2029 Callable @ 100.000 09/01/2022		115,000		122,639
Jackson County Unified School District No 336 Holton 5.000% 09/01/2034 Callable @ 100.000 09/01/2022		140,000		149,320
Jackson County Unified School District No 336 Holton 5.000% 09/01/2034 Callable @ 100.000 09/01/2022		110,000		117,307
Leavenworth County Unified School District No 458 5.000% 09/01/2029 Callable @ 100.000 09/01/2023		500,000		556,275
Leavenworth County Unified School District No 469 4.000% 09/01/2030 Callable @ 100.000 09/01/2022		320,000		335,744
Miami County Unified School District No 368 Paola 5.000% 09/01/2027 Callable @ 100.000 09/01/2021		135,000		137,232
Miami County Unified School District No 368 Paola 5.000% 09/01/2027 Callable @ 100.000 09/01/2021		105,000		106,739
Neosho County Unified School District No 413 4.000% 09/01/2031 Callable @ 100.000 09/01/2023		250,000		267,573
Seward County Unified School District No 480 Liberal 4.250% 09/01/2039 Callable @ 100.000 09/01/2022		500,000		525,575
Seward County Unified School District No 480 Liberal 5.000% 09/01/2033 Callable @ 100.000 09/01/2022		85,000		90,421
Seward County Unified School District No 480 Liberal 5.000% 09/01/2033 Callable @ 100.000 09/01/2022		330,000		351,094
Washington County Public Building Commission 4.000% 09/01/2028 Callable @ 100.000 09/01/2022		500,000		525,915
Washington County Public Building Commission 5.000% 09/01/2032 Callable @ 100.000 09/01/2022		500,000		533,005
Washington County Public Building Commission 5.000% 09/01/2037 Callable @ 100.000 09/01/2022		400,000		425,848
Wyandotte County Unified School District No 202 Turner 5.000% 09/01/2025 Callable @ 100.000 09/01/2023		250,000		277,765
				9,852,924
Transportation (1.1%)
State of Kansas Department of Transportation 5.000% 09/01/2033 Callable @ 100.000 09/01/2025		500,000		582,340
State of Kansas Department of Transportation 5.000% 09/01/2035 Callable @ 100.000 09/01/2025		250,000		291,708
				874,048
Utilities (12.8%)
City of McPherson KS Water System Revenue 2.000% 10/01/2037 Callable @ 100.000 10/01/2029		425,000		433,390
City of McPherson KS Water System Revenue 3.000% 10/01/2031 Callable @ 100.000 10/01/2029		150,000		168,372
City of McPherson KS Water System Revenue 3.000% 10/01/2032 Callable @ 100.000 10/01/2029		175,000		194,856
City of Topeka KS Combined Utility Revenue 4.000% 08/01/2023		500,000		542,830
Kansas Municipal Energy Agency 5.000% 04/01/2030 Callable @ 100.000 04/01/2026		250,000		293,133
Kansas Municipal Energy Agency 5.000% 04/01/2032 Callable @ 100.000 04/01/2026		500,000		583,090
Kansas Municipal Energy Agency 5.000% 04/01/2033 Callable @ 100.000 04/01/2026		745,000		866,405
Kansas Municipal Energy Agency 5.000% 04/01/2035 Callable @ 100.000 04/01/2026		300,000		350,295
Kansas Municipal Energy Agency 5.000% 04/01/2038 Callable @ 100.000 04/01/2026		1,000,000		1,159,870
*Kansas Municipal Energy Agency 5.750% 07/01/2038 Callable @ 100.000 07/01/2023		1,000,000		1,094,040
Kansas Power Pool 4.000% 12/01/2031 Callable @ 100.000 12/01/2025		500,000		549,860
Saline County Public Building Commission/KS 2.000% 09/01/2031 Callable @ 100.000 09/01/2028		435,000		450,864
Saline County Public Building Commission/KS 3.000% 09/01/2029 Callable @ 100.000 09/01/2028		410,000		462,484
Wyandotte County Kansas City Unified Government Utility System Revenue 3.000% 09/01/2040 Callable @ 100.000 09/01/2030		250,000		269,125
Wyandotte County Kansas City Unified Government Utility System Revenue 5.000% 09/01/2028 Callable @ 100.000 09/01/2026		500,000		606,750
*Wyandotte County Kansas City Unified Government Utility System Revenue 5.000% 09/01/2032 Callable @ 100.000 09/01/2022		1,250,000		1,318,300
Wyandotte County Kansas City Unified Government Utility System Revenue 5.000% 09/01/2035 Callable @ 100.000 09/01/2025		500,000		573,565
Wyandotte County Kansas City Unified Government Utility System Revenue 5.000% 09/01/2036 Callable @ 100.000 09/01/2021		250,000		253,408
				10,170,636

TOTAL MUNICIPAL BONDS (COST: $68,537,222)			$	72,497,578

OTHER ASSETS LESS LIABILITIES (8.6%)				6,845,792

NET ASSETS (100.0%)			$	79,343,370

*Indicates bonds are segregated by the custodian to cover when-issued or delayed delivery purchases.
#When-issued purchase as of April 30, 2021.

MAINE MUNICIPAL FUND
Schedule of Investments April 30, 2021 (unaudited)
		Principal		Fair
		Amount		Value
MUNICIPAL BONDS (92.1%)

Education (9.6%)
Maine Educational Loan Authority 4.450% 12/01/2025	$	100,000	$	100,328
Maine Health & Higher Educational Facilities Authority 4.750% 07/01/2031 Callable @ 100.000 07/01/2021		180,000		180,475
*Maine Health & Higher Educational Facilities Authority 5.000% 07/01/2026		940,000		1,124,306
				1,405,109
General Obligation (24.5%)
City of Auburn ME 4.500% 09/01/2022		100,000		105,961
City of Biddeford ME 4.000% 10/01/2026		250,000		297,085
City of Lewiston ME 2.750% 03/15/2038 Callable @ 100.000 03/15/2027		100,000		103,546
City of Lewiston ME 2.750% 03/15/2039 Callable @ 100.000 03/15/2027		250,000		259,425
City of Lewiston ME 2.750% 03/15/2040 Callable @ 100.000 03/15/2027		250,000		260,130
City of Portland ME 4.125% 10/01/2029		100,000		100,095
City of Portland ME 4.250% 05/01/2029		150,000		150,089
City of Portland ME 5.000% 08/01/2021		125,000		126,706
City of Portland ME 5.000% 08/01/2022 Callable @ 100.000 08/01/2021		125,000		126,746
City of Waterville ME 4.000% 07/01/2025 Callable @ 100.000 07/01/2021		135,000		135,957
*Maine School Administrative District No 28 4.000% 05/01/2036 Callable @ 100.000 05/01/2028		500,000		575,615
Maine School Administrative District No 51 4.000% 10/15/2029 Callable @ 100.000 10/15/2024		100,000		110,944
Regional School Unit No 26 3.000% 09/01/2044 Callable @ 100.000 09/01/2029		475,000		506,773
Town of Brunswick ME 2.500% 11/01/2041 Callable @ 100.000 11/01/2030		500,000		515,835
Town of Scarborough ME 4.000% 11/01/2028 Callable @ 100.000 11/01/2023		100,000		108,406
Wells Ogunquit Community School District 4.000% 11/01/2024		100,000		111,803
				3,595,116
Health Care (17.3%)
Maine Health & Higher Educational Facilities Authority 3.000% 07/01/2039 Callable @ 100.000 07/01/2029		250,000		263,595
Maine Health & Higher Educational Facilities Authority 4.500% 07/01/2031		5,000		5,002
*Maine Health & Higher Educational Facilities Authority 5.000% 07/01/2029 Callable @ 100.000 07/01/2024		1,000,000		1,105,400
Maine Health & Higher Educational Facilities Authority 5.000% 07/01/2030 Callable @ 100.000 07/01/2024		500,000		551,285
Maine Health & Higher Educational Facilities Authority 5.000% 07/01/2031 Callable @ 100.000 07/01/2024		500,000		553,845
Maine Health & Higher Educational Facilities Authority 5.250% 07/01/2023		55,000		55,017
				2,534,144
Housing (15.3%)
Maine State Housing Authority 2.250% 11/15/2045 Callable @ 100.000 05/15/2029		250,000		252,660
Maine State Housing Authority 2.500% 11/15/2045 Callable @ 100.000 11/15/2028		165,000		166,982
Maine State Housing Authority 3.000% 11/15/2036 Callable @ 100.000 11/15/2025		400,000		414,216
Maine State Housing Authority 3.350% 11/15/2044 Callable @ 100.000 05/15/2028		155,000		163,976
Maine State Housing Authority 4.000% 11/15/2035 Callable @ 100.000 11/15/2024		435,000		462,562
*Maine State Housing Authority 4.000% 11/15/2044 Callable @ 100.000 05/15/2028		500,000		542,775
Maine State Housing Authority 5.000% 06/15/2024		250,000		250,128
				2,253,298
Other Revenue (4.4%)
Maine Municipal Bond Bank 3.000% 11/01/2040 Callable @ 100.000 11/01/2030		250,000		272,440
Maine Municipal Bond Bank 4.000% 11/01/2038 Callable @ 100.000 11/01/2022		125,000		129,513
Maine Municipal Bond Bank 5.000% 11/01/2025 Callable @ 100.000 11/01/2022		125,000		134,560
Maine Municipal Bond Bank 5.000% 11/01/2027 Callable @ 100.000 11/01/2024		100,000		115,964
				652,477
Pre-Refunded (11.7%)
Maine Governmental Facilities Authority 4.000% 10/01/2024 Callable @ 100.000 10/01/2021		200,000		203,278
Maine Health & Higher Educational Facilities Authority 4.000% 07/01/2024 Callable @ 100.000 07/01/2022		270,000		282,128
Maine Health & Higher Educational Facilities Authority 4.750% 07/01/2031 Callable @ 100.000 07/01/2021		70,000		70,531
Maine Health & Higher Educational Facilities Authority 5.000% 07/01/2023		15,000		16,632
Maine Health & Higher Educational Facilities Authority 5.000% 07/01/2034 Callable @ 100.000 07/01/2024		250,000		287,290
*Maine Health & Higher Educational Facilities Authority 5.000% 07/01/2039 Callable @ 100.000 07/01/2024		750,000		855,983
				1,715,842
Transportation (4.1%)
City of Portland ME General Airport Revenue 5.000% 07/01/2022		100,000		106,722
City of Portland ME General Airport Revenue 5.000% 07/01/2023		100,000		111,172
City of Portland ME General Airport Revenue 5.000% 07/01/2024 Callable @ 100.000 07/01/2023		100,000		111,369
Maine Turnpike Authority 4.000% 07/01/2032 Callable @ 100.000 07/01/2024		250,000		269,243
				598,506
Utilities (5.2%)
Kennebunk Light & Power District 5.000% 08/01/2022		215,000		215,297
Portland Water District 3.000% 11/01/2039 Callable @ 100.000 11/01/2029		500,000		547,930
				763,227

TOTAL MUNICIPAL BONDS (COST: $12,838,065)			$	13,517,717

OTHER ASSETS LESS LIABILITIES (7.9%)				1,163,771

NET ASSETS (100.0%)			$	14,681,488

*Indicates bonds are segregated by the custodian to cover when-issued or delayed delivery purchases.

NEBRASKA MUNICIPAL FUND
Schedule of Investments April 30, 2021 (unaudited)
		Principal		Fair
		Amount		Value
MUNICIPAL BONDS (92.1%)

Education (2.6%)
County of Saline NE 3.000% 02/15/2034 Callable @ 100.000 02/15/2029	$	365,000	$	385,750
County of Saline NE 3.000% 02/15/2035 Callable @ 100.000 02/15/2029		300,000		315,171
Nebraska Educational Health & Social Services Finance Authority 5.050% 09/01/2030 Callable @ 100.000 05/18/2021		250,000		253,725
Southeast Community College 3.000% 03/15/2045 Callable @ 100.000 07/02/2025		500,000		505,395
				1,460,041

General Obligation (35.6%)
Ashland Greenwood Public Schools 3.000% 12/15/2044 Callable @ 100.000 12/15/2030		950,000		1,043,376
Ashland Greenwood Public Schools 3.000% 12/15/2046 Callable @ 100.000 12/15/2030		500,000		542,375
City of Lincoln NE 3.000% 12/01/2039 Callable @ 100.000 06/01/2029		685,000		735,190
City of Omaha NE 3.750% 01/15/2038 Callable @ 100.000 01/15/2027		500,000		548,430
City of Omaha NE 4.000% 04/15/2037 Callable @ 100.000 04/15/2029		500,000		591,465
City of Omaha NE 5.000% 04/15/2027 Callable @ 100.000 04/15/2026		955,000		1,169,799
City of Omaha NE 5.000% 04/15/2028 Callable @ 100.000 04/15/2026		500,000		609,105
City of Sidney NE 4.000% 12/15/2036 Callable @ 100.000 12/15/2021		1,250,000		1,271,625
County of Kearney NE 4.000% 06/01/2024		350,000		387,121
Douglas County School District No 17/NE 2.000% 12/15/2039 Callable @ 100.000 12/15/2030		500,000		494,225
Douglas County School District No 59/NE 3.500% 06/15/2043 Callable @ 100.000 03/15/2024		500,000		519,765
Elkhorn School District 4.000% 12/15/2030 Callable @ 100.000 12/15/2026		500,000		573,470
Elkhorn School District 4.000% 12/15/2034 Callable @ 100.000 12/15/2025		300,000		333,510
Elkhorn School District 4.000% 12/15/2034 Callable @ 100.000 12/15/2028		500,000		588,115
Elkhorn School District 4.000% 12/15/2037 Callable @ 100.000 12/15/2029		300,000		361,674
Elkhorn School District 5.000% 06/15/2022		475,000		500,650
Gretna Public Schools 3.000% 12/15/2046 Callable @ 100.000 12/15/2031		1,000,000		1,103,720
Hall County Airport Authority 5.000% 07/15/2030 Callable @ 100.000 08/15/2021		410,000		420,488
Hall County Airport Authority 5.000% 07/15/2031 Callable @ 100.000 08/15/2021		435,000		444,553
Kearney School District 3.000% 12/15/2024		350,000		381,724
Knox County School District N0 576 4.000% 12/15/2038 Callable @ 100.000 12/15/2023		590,000		626,486
Lancaster County School District 001 5.000% 01/15/2023		750,000		812,115
Omaha School District 3.000% 12/15/2042 Callable @ 100.000 01/30/2030		1,000,000		1,088,350
*Omaha School District 5.000% 12/15/2029 Callable @ 100.000 12/15/2026		1,630,000		2,008,584
Plattsmouth School District 3.000% 12/15/2039 Callable @ 100.000 08/21/2024		1,000,000		1,028,240
Polk County School District No 19 3.000% 06/15/2039 Callable @ 100.000 07/30/2024		455,000		470,748
Ponca Public Schools 3.000% 12/15/2026 Callable @ 100.000 02/26/2025		355,000		385,175
Sarpy County School District No 1 3.500% 12/15/2035 Callable @ 100.000 09/30/2024		250,000		266,980
Superior Public Schools 1.450% 12/15/2022		340,000		346,627
Westside Community Schools 5.000% 12/01/2038 Callable @ 100.000 12/05/2024		235,000		264,164
Westside Community Schools 5.000% 12/01/2039 Callable @ 100.000 12/05/2024		250,000		280,605
				20,198,451
Health Care (3.5%)
Douglas County Hospital Authority No 2 5.000% 05/15/2027 Callable @ 100.000 05/15/2026		200,000		241,916
Madison County Hospital Authority No 1 5.000% 07/01/2031 Callable @ 100.000 07/01/2025		500,000		572,385
Madison County Hospital Authority No 1 5.000% 07/01/2032 Callable @ 100.000 07/01/2025		335,000		382,429
Madison County Hospital Authority No 1 5.000% 07/01/2033 Callable @ 100.000 07/01/2025		450,000		515,084
Madison County Hospital Authority No 1 5.000% 07/01/2034 Callable @ 100.000 07/01/2025		215,000		246,833
				1,958,647
Housing (2.3%)
Nebraska Investment Finance Authority 3.850% 03/01/2038 Callable @ 100.000 09/01/2024		515,000		528,807
Nebraska Investment Finance Authority 3.900% 09/01/2035 Callable @ 100.000 09/01/2024		730,000		768,391
				1,297,198
Other Revenue (0.8%)
Papillion Municipal Facilities Corp 3.000% 12/15/2034 Callable @ 100.000 07/30/2024		435,000		453,836

Pre-Refunded (17.0%)
*City of Lincoln NE Electric System Revenue 5.000% 09/01/2037 Callable @ 100.000 09/01/2022		1,000,000		1,060,030
*City of Omaha NE 5.000% 02/01/2027 Callable @ 100.000 02/01/2022		1,000,000		1,037,410
Grand Island Public Schools 5.000% 12/15/2033 Callable @ 100.000 12/15/2024		500,000		583,970
Grand Island Public Schools 5.000% 12/15/2039 Callable @ 100.000 12/15/2024		500,000		583,970
Gretna Public Schools 5.000% 12/15/2035 Callable @ 100.000 12/15/2025		250,000		303,223
Lincoln County Hospital Authority No 1 5.000% 11/01/2023 Callable @ 100.000 11/01/2021		250,000		255,860
Lincoln County Hospital Authority No 1 5.000% 11/01/2024 Callable @ 100.000 11/01/2021		250,000		255,975
Lincoln County Hospital Authority No 1 5.000% 11/01/2025 Callable @ 100.000 11/01/2021		250,000		255,860
Lincoln County Hospital Authority No 1 5.000% 11/01/2032 Callable @ 100.000 11/01/2021		250,000		255,860
Scotts Bluff County School District No 32 5.000% 12/01/2031 Callable @ 100.000 12/01/2025		250,000		302,583
University of Nebraska 5.000% 05/15/2033 Callable @ 100.000 11/15/2025		250,000		300,393
University of Nebraska 5.000% 05/15/2035 Callable @ 100.000 05/15/2025		500,000		590,685
University of Nebraska 5.000% 07/01/2035 Callable @ 100.000 07/01/2025		1,500,000		1,782,930
University of Nebraska 5.000% 07/01/2038 Callable @ 100.000 07/01/2022		250,000		263,788
University of Nebraska 5.000% 07/01/2042 Callable @ 100.000 01/01/2022		1,000,000		1,032,020
West Haymarket Joint Public Agency 5.000% 12/15/2042 Callable @ 100.000 12/15/2021		750,000		772,905
				9,637,460
Transportation (3.1%)
Omaha Airport Authority 5.000% 12/15/2027 Callable @ 100.000 12/15/2026		500,000		599,390
Omaha Airport Authority 5.000% 12/15/2036 Callable @ 100.000 12/15/2026		1,000,000		1,168,030
				1,767,420
Utilities (27.2%)
*Central Plains Energy Project 5.000% 09/01/2027 Callable @ 100.000 09/01/2022		2,000,000		2,093,300
Central Plains Energy Project 5.000% 09/01/2042 Callable @ 100.000 09/01/2022		500,000		528,745
Central Plains Energy Project 5.250% 09/01/2037 Callable @ 100.000 09/01/2022		500,000		532,975
City of Columbus NE Combined Revenue 4.000% 12/15/2032 Callable @ 100.000 12/15/2026		100,000		113,870
City of Columbus NE Combined Utilities System Revenue 4.000% 06/15/2033 Callable @ 100.000 06/15/2030		300,000		360,792
City of Columbus NE Combined Utilities System Revenue 4.000% 06/15/2034 Callable @ 100.000 06/15/2030		300,000		359,316
City of Columbus NE Combined Utilities System Revenue 4.000% 06/15/2035 Callable @ 100.000 06/15/2030		300,000		357,951
City of Grand Island NE Combined Utility System Revenue 4.000% 08/15/2037 Callable @ 100.000 08/15/2030		300,000		359,019
City of Grand Island NE Sewer System Revenue 5.000% 09/15/2026 Callable @ 100.000 09/17/2023		250,000		280,790
City of Hastings NE Combined Utility Revenue 4.000% 10/15/2032 Callable @ 100.000 10/15/2022		500,000		521,005
City of Lincoln NE Solid Waste Management Revenue 4.000% 08/01/2025 Callable @ 100.000 08/01/2023		275,000		300,154
City of Lincoln NE Solid Waste Management Revenue 4.000% 08/01/2027 Callable @ 100.000 08/01/2023		400,000		433,932
City of Omaha NE Sewer Revenue 4.000% 04/01/2035 Callable @ 100.000 04/01/2026		250,000		278,953
City of Omaha NE Sewer Revenue 4.000% 04/01/2037 Callable @ 100.000 04/01/2030		750,000		900,023
City of Omaha NE Sewer Revenue 4.000% 04/01/2038 Callable @ 100.000 04/01/2030		400,000		474,500
City of Omaha NE Sewer Revenue 4.000% 04/01/2039 Callable @ 100.000 04/01/2030		250,000		295,205
City of Omaha NE Sewer Revenue 5.000% 11/15/2029 Callable @ 100.000 11/15/2024		250,000		285,893
City of Omaha NE Sewer Revenue 5.000% 11/15/2030 Callable @ 100.000 11/15/2024		250,000		285,575
City of Omaha NE Sewer Revenue 5.000% 11/15/2031 Callable @ 100.000 11/15/2024		500,000		571,525
Metropolitan Utilities District of Omaha 4.000% 12/15/2026 Callable @ 100.000 12/15/2022		250,000		265,098
Municipal Energy Agency of Nebraska 5.000% 04/01/2030 Callable @ 100.000 04/01/2022		500,000		520,650
Municipal Energy Agency of Nebraska 5.000% 04/01/2032 Callable @ 100.000 04/01/2022		100,000		103,894
Nebraska Public Power District 5.000% 01/01/2030 Callable @ 100.000 01/01/2022		500,000		515,780
*Nebraska Public Power District 5.000% 01/01/2036 Callable @ 100.000 01/01/2026		2,355,000		2,737,240
Nebraska Public Power District 5.000% 01/01/2041 Callable @ 100.000 01/01/2026		250,000		289,720
Omaha Public Power District Nebraska City Station Unit 2 4.000% 02/01/2032 Callable @ 100.000 02/01/2026		400,000		448,332
Omaha Public Power District Nebraska City Station Unit 2 4.000% 02/01/2035 Callable @ 100.000 02/01/2026		365,000		407,322
Omaha Public Power District Nebraska City Station Unit 2 5.000% 02/01/2031 Callable @ 100.000 02/01/2026		445,000		527,863
Omaha Public Power District Nebraska City Station Unit 2 5.000% 02/01/2032 Callable @ 100.000 02/01/2025		250,000		286,585
				15,436,006

TOTAL MUNICIPAL BONDS (COST: 49,765,922)			$	52,209,057

OTHER ASSETS LESS LIABILITIES (7.9%)			$	4,451,234

NET ASSETS (100.0%)			$	56,660,291


*Indicates bonds are segregated by the custodian to cover when-issued or delayed delivery purchases.

OKLAHOMA MUNICIPAL BOND
Schedule of Investments April 30, 2021 (unaudited)
		Principal		Fair
		Amount		Value
MUNICIPAL BONDS (92.2%)

Education (7.6%)
Oklahoma Development Finance Authority 4.000% 08/01/2030 Callable @ 100.000 08/01/2024	$	280,000	$	305,516
Oklahoma Development Finance Authority 4.000% 08/01/2031 Callable @ 100.000 08/01/2024		290,000		315,071
Oklahoma Development Finance Authority 4.000% 08/01/2032 Callable @ 100.000 08/01/2024		305,000		330,834
Oklahoma Development Finance Authority 4.000% 08/01/2033 Callable @ 100.000 08/01/2024		315,000		341,183
Oklahoma Development Finance Authority 5.000% 06/01/2029 Callable @ 100.000 06/01/2024		250,000		302,875
Oklahoma Development Finance Authority 5.000% 06/01/2034 Callable @ 100.000 06/01/2024		500,000		594,085
Oklahoma Development Finance Authority 5.000% 06/01/2039 Callable @ 100.000 06/01/2024		500,000		551,405
Oklahoma Development Finance Authority 5.000% 06/01/2039 Callable @ 100.000 06/01/2024		500,000		585,440
Oklahoma State University 4.000% 09/01/2036 Callable @ 100.000 09/01/2030		370,000		443,286
Oklahoma State University 5.000% 08/01/2032 Callable @ 100.000 08/01/2028		250,000		312,248
University of Oklahoma/The 4.000% 07/01/2040 Callable @ 100.000 07/01/2025		650,000		704,269
University of Oklahoma/The 5.000% 07/01/2036 Callable @ 100.000 07/01/2025		500,000		565,985
University of Oklahoma/The 5.000% 07/01/2038 Callable @ 100.000 07/01/2025		500,000		564,480
				5,916,675
General Obligation (7.6%)
City of Bartlesville OK 2.000% 12/01/2028		195,000		209,007
City of Broken Arrow OK 2.000% 12/01/2021		500,000		504,915
City of Broken Arrow OK 3.125% 12/01/2035 Callable @ 100.000 12/01/2026		575,000		618,056
City of Broken Arrow OK 4.000% 12/01/2037 Callable @ 100.000 12/01/2028		605,000		691,896
City of Broken Arrow OK 4.000% 12/01/2038 Callable @ 100.000 12/01/2028		610,000		696,230
City of Lawton OK 2.000% 12/01/2022		500,000		513,265
City of Midwest City OK 3.000% 06/01/2041 Callable @ 100.000 06/01/2029		500,000		530,110
#City of Oklahoma City OK 4.000% 03/01/2031		300,000		381,582
*City of Oklahoma City OK 4.000% 03/01/2032 Callable @ 100.000 03/01/2027		1,305,000		1,512,860
City of Perkins OK 3.000% 06/01/2033		125,000		140,179
City of Perkins OK 3.000% 06/01/2034		115,000		129,391
				5,927,491
Health Care (6.6%)
Norman Regional Hospital Authority 3.250% 09/01/2039 Callable @ 100.000 09/01/2029		895,000		949,130
Norman Regional Hospital Authority 5.000% 09/01/2045 Callable @ 100.000 09/01/2029		200,000		244,080
Oklahoma County Finance Authority 4.000% 04/01/2041 Callable @ 100.000 04/01/2031		250,000		294,615
Oklahoma County Finance Authority 4.000% 04/01/2046 Callable @ 100.000 04/01/2031		335,000		390,118
Oklahoma Development Finance Authority 4.000% 08/15/2038 Callable @ 100.000 08/15/2025		250,000		271,623
Oklahoma Development Finance Authority 4.000% 08/15/2048 Callable @ 100.000 08/15/2028		825,000		891,957
Oklahoma Development Finance Authority 5.000% 07/01/2035 Callable @ 100.000 07/01/2025		250,000		270,503
Oklahoma Development Finance Authority 5.000% 08/15/2025		350,000		406,431
Oklahoma Development Finance Authority 5.000% 08/15/2029 Callable @ 100.000 08/15/2025		250,000		281,248
Oklahoma Development Finance Authority 5.000% 08/15/2029 Callable @ 100.000 08/15/2028		345,000		423,111
Oklahoma Development Finance Authority 5.000% 08/15/2033 Callable @ 100.000 08/15/2028		175,000		210,863
Tulsa County Industrial Authority 3.000% 02/01/2037 Callable @ 100.000 02/01/2029		500,000		526,890
				5,160,566
Housing (1.4%)
Oklahoma Housing Finance Agency 3.000% 09/01/2039 Callable @ 100.000 03/01/2028		785,000		818,206
Oklahoma Housing Finance Agency 3.200% 03/01/2042 Callable @ 100.000 03/01/2028		270,000		288,517
				1,106,722

Other Revenue (30.0%)
Bryan County School Finance Authority 4.000% 12/01/2028		385,000		464,298
Bryan County School Finance Authority 4.000% 12/01/2029		415,000		506,557
Bryan County School Finance Authority 4.000% 12/01/2030 Callable @ 100.000 12/01/2029		435,000		529,852
Caddo County Governmental Building Authority 5.000% 09/01/2040 Callable @ 100.000 09/01/2028		1,010,000		1,143,977
City of Oklahoma City OK 5.000% 03/01/2032		250,000		250,285
City of Oklahoma City OK 5.000% 03/01/2033		250,000		250,305
City of Oklahoma City OK 5.000% 03/01/2034		500,000		500,640
Elk City Industrial Authority 3.000% 05/01/2034 Callable @ 100.000 05/01/2029		1,050,000		1,124,865
Elk City Industrial Authority 3.000% 05/01/2039 Callable @ 100.000 05/01/2029		425,000		432,582
Garvin County Educational Facilities Authority 4.000% 09/01/2031		665,000		811,267
Goldsby Public Works Authority 3.000% 08/01/2021		165,000		165,733
Grady County School Finance Authority 5.000% 09/01/2032 Callable @ 100.000 09/01/2028		370,000		457,993
Kingfisher County Educational Facilities Authority 3.000% 03/01/2033 Callable @ 100.000 03/01/2029		250,000		271,513
Kingfisher County Educational Facilities Authority 3.000% 03/01/2035 Callable @ 100.000 03/01/2031		570,000		645,673
Kingfisher County Educational Facilities Authority 3.000% 03/01/2036 Callable @ 100.000 03/01/2031		400,000		444,480
Leflore County Public Facility Authority 3.000% 12/01/2032 Callable @ 100.000 12/01/2029		500,000		539,190
Mannford Public Works Authority 3.000% 01/01/2031 Callable @ 100.000 01/01/2029		500,000		531,095
Marshall County Educational Facilities Authority 4.000% 09/01/2036 Callable @ 100.000 09/01/2030		500,000		594,915
Muskogee Industrial Trust 5.000% 09/01/2026		400,000		481,380
Oklahoma Capitol Improvement Authority 3.000% 07/01/2040 Callable @ 100.000 07/01/2030		940,000		1,001,570
Oklahoma Capitol Improvement Authority 4.000% 07/01/2045 Callable @ 100.000 07/01/2029		500,000		570,090
Oklahoma Capitol Improvement Authority 5.000% 07/01/2035 Callable @ 100.000 07/01/2029		530,000		673,195
Oklahoma City Public Property Authority 5.000% 10/01/2027 Callable @ 100.000 10/01/2025		350,000		410,298
Oklahoma City Public Property Authority 5.000% 10/01/2028 Callable @ 100.000 10/01/2025		400,000		466,600
Oklahoma City Public Property Authority 5.000% 10/01/2029 Callable @ 100.000 10/01/2025		625,000		723,069
Oklahoma City Public Property Authority 5.000% 10/01/2036 Callable @ 100.000 10/01/2025		230,000		262,276
Oklahoma City Public Property Authority 5.000% 10/01/2039 Callable @ 100.000 10/01/2025		835,000		943,583
Oklahoma County Finance Authority 4.000% 09/01/2033 Callable @ 100.000 09/01/2030		250,000		292,768
Oklahoma Development Finance Authority 3.000% 06/01/2029		195,000		217,846
Oklahoma Development Finance Authority 3.000% 06/01/2030		180,000		200,972
Oklahoma Development Finance Authority 4.000% 06/01/2032 Callable @ 100.000 06/01/2030		140,000		168,787
#Oklahoma Development Finance Authority 4.000% 06/01/2032 Callable @ 100.000 06/01/2031		340,000		420,954
Oklahoma Development Finance Authority 4.000% 06/01/2033 Callable @ 100.000 06/01/2030		145,000		174,012
Oklahoma Development Finance Authority 4.000% 06/01/2034 Callable @ 100.000 06/01/2030		150,000		179,289
#Oklahoma Development Finance Authority 4.000% 06/01/2034 Callable @ 100.000 06/01/2031		365,000		446,508
Oklahoma Development Finance Authority 4.000% 06/01/2035 Callable @ 100.000 06/01/2030		155,000		184,701
#Oklahoma Development Finance Authority 4.000% 06/01/2035 Callable @ 100.000 06/01/2031		205,000		249,942
Oklahoma Development Finance Authority 4.000% 06/01/2038 Callable @ 100.000 06/01/2029		725,000		834,888
Oklahoma Development Finance Authority 4.000% 06/01/2040 Callable @ 100.000 06/01/2030		250,000		296,520
Okmulgee County Governmental Building Authority 4.250% 12/01/2035 Callable @ 100.000 12/01/2023		500,000		532,860
Ottawa County Educational Facilities Authority 4.000% 09/01/2022		990,000		1,037,441
Pottawatomie County Facilities Authority 3.000% 09/01/2036 Callable @ 100.000 09/01/2030		500,000		555,730
Sand Springs Municipal Authority 4.000% 01/01/2036 Callable @ 100.000 01/01/2023		500,000		522,500
Sand Springs Municipal Authority 4.250% 01/01/2035 Callable @ 100.000 01/01/2023		250,000		262,475
Tahlequah Public Facilities Authority 4.000% 04/01/2023		550,000		588,973
Tulsa County Industrial Authority 4.000% 12/01/2030 Callable @ 100.000 12/01/2026		250,000		289,600
Tulsa Public Facilities Authority 3.000% 06/01/2031 Callable @ 100.000 06/01/2025		200,000		212,368
Wagoner County School Development Authority 4.000% 09/01/2027		500,000		585,710
				23,452,124

Pre-Refunded (6.1%)
City of Broken Arrow OK 4.125% 08/01/2031 Callable @ 100.000 08/01/2021		180,000		181,969
Oklahoma Capitol Improvement Authority 4.000% 07/01/2043 Callable @ 100.000 07/01/2026		500,000		583,290
Oklahoma Capitol Improvement Authority 4.000% 10/01/2024 Callable @ 100.000 10/01/2021		800,000		813,968
Oklahoma Capitol Improvement Authority 4.000% 10/01/2025 Callable @ 100.000 10/01/2021		1,000,000		1,017,460
Oklahoma City Water Utilities Trust 5.000% 07/01/2031 Callable @ 100.000 07/01/2021		250,000		252,063
Oklahoma Development Finance Authority 5.000% 02/15/2042 Callable @ 100.000 02/15/2022		250,000		259,445
*Oklahoma Municipal Power Authority 5.750% 01/01/2024		370,000		418,481
Oklahoma Water Resources Board 4.000% 04/01/2025 Callable @ 100.000 04/01/2022		150,000		155,531
Sapulpa Municipal Authority 5.000% 04/01/2028 Callable @ 100.000 04/01/2023		750,000		813,053
University of Oklahoma/The 5.000% 07/01/2037 Callable @ 100.000 07/01/2021		290,000		292,346
				4,787,605

Transportation (9.5%)
Oklahoma Capitol Improvement Authority 4.000% 07/01/2045 Callable @ 100.000 07/01/2030		2,000,000		2,324,140
Oklahoma Turnpike Authority 4.000% 01/01/2038 Callable @ 100.000 01/01/2027		100,000		114,317
Oklahoma Turnpike Authority 4.000% 01/01/2042 Callable @ 100.000 01/01/2027		1,000,000		1,139,060
*Tulsa Airports Improvement Trust 4.000% 06/01/2035 Callable @ 100.000 06/01/2028		1,355,000		1,506,354
Tulsa Airports Improvement Trust 4.000% 06/01/2036 Callable @ 100.000 06/01/2028		145,000		161,188
Tulsa Airports Improvement Trust 5.000% 06/01/2023 Callable @ 100.000 06/01/2021		420,000		421,802
Tulsa Airports Improvement Trust 5.000% 06/01/2024 Callable @ 100.000 06/01/2021		230,000		230,968
Tulsa Airports Improvement Trust 5.000% 06/01/2027		300,000		364,920
Tulsa Airports Improvement Trust 5.250% 06/01/2025 Callable @ 100.000 06/01/2021		245,000		246,066
Tulsa Airports Improvement Trust 5.250% 06/01/2026 Callable @ 100.000 06/01/2021		360,000		361,512
Tulsa Parking Authority 4.000% 07/01/2025 Callable @ 100.000 07/01/2021		500,000		503,095
				7,373,421
Utilities (23.4%)
Clinton Public Works Authority 4.000% 12/01/2034 Callable @ 100.000 12/01/2024		750,000		807,608
Clinton Public Works Authority 4.000% 12/01/2039 Callable @ 100.000 12/01/2024		500,000		537,425
Coweta Public Works Authority 4.000% 08/01/2032 Callable @ 100.000 08/01/2026		1,000,000		1,138,550
Edmond Public Works Authority 4.000% 07/01/2047 Callable @ 100.000 07/01/2027		1,000,000		1,144,130
Edmond Public Works Authority 5.000% 07/01/2032 Callable @ 100.000 07/01/2027		500,000		612,760
Jenks Public Works Authority 3.000% 08/01/2029 Callable @ 100.000 08/01/2024		325,000		343,122
Miami Special Utility Authority 4.000% 12/01/2036 Callable @ 100.000 12/01/2026		500,000		566,925
Oklahoma City Water Utilities Trust 4.000% 07/01/2039 Callable @ 100.000 07/01/2025		175,000		190,787
Oklahoma City Water Utilities Trust 5.000% 07/01/2034 Callable @ 100.000 07/01/2025		100,000		115,642
Oklahoma Water Resources Board 4.000% 04/01/2033 Callable @ 100.000 04/01/2030		500,000		613,930
Oklahoma Water Resources Board 4.000% 10/01/2038 Callable @ 100.000 10/01/2028		325,000		382,174
Oklahoma Water Resources Board 4.000% 10/01/2043 Callable @ 100.000 10/01/2028		830,000		965,514
Oklahoma Water Resources Board 4.000% 10/01/2045 Callable @ 100.000 10/01/2030		955,000		1,153,344
Oklahoma Water Resources Board 4.000% 10/01/2045 Callable @ 100.000 10/01/2030		465,000		559,325
Oklahoma Water Resources Board 4.000% 10/01/2048 Callable @ 100.000 10/01/2028		1,460,000		1,670,766
Oklahoma Water Resources Board 4.000% 10/01/2050 Callable @ 100.000 10/01/2030		515,000		615,013
Oklahoma Water Resources Board 5.000% 04/01/2032 Callable @ 100.000 04/01/2022		140,000		145,634
Oklahoma Water Resources Board 5.000% 10/01/2029 Callable @ 100.000 10/01/2024		250,000		284,783
Oklahoma Water Resources Board 5.000% 10/01/2033 Callable @ 100.000 10/01/2024		500,000		567,560
Sand Springs Municipal Authority Water Sewer Utility & 1% Sales Tax Revenue 3.000% 11/01/2038 Callable @ 100.000 11/01/2028		980,000		1,055,039
*Sand Springs Municipal Authority Water Sewer Utility & 1% Sales Tax Revenue 3.000% 11/01/2042 Callable @ 100.000 11/01/2028		1,500,000		1,609,965
*Washington County Rural Water District No 3 3.000% 09/15/2041 Callable @ 100.000 03/01/2028		3,000,000		3,194,760
				18,274,754

TOTAL MUNICIPAL BONDS (COST: $68,979,594)			$	71,999,359

OTHER ASSETS LESS LIABILITIES (7.8%)			$	6,091,096

NET ASSETS (100.0%)			$	78,090,455

*Indicates bonds are segregated by the custodian to cover when-issued or delayed delivery purchases.
#When-issued purchase as of April 30, 2021.

VIKING TAX-FREE FUND FOR MONTANA
Schedule of Investments April 30, 2021 *(unaudited)*
		Principal		Fair
		Amount		Value
MUNICIPAL BONDS (89.8%)

Education (1.4%)
Montana State Board of Regents 4.000% 11/15/2025 Callable @ 100.000 11/15/2022	$	500,000	$	530,190
Montana State Board of Regents 5.000% 11/15/2025 Callable @ 100.000 11/15/2023		500,000		561,080
Montana State Board of Regents 5.000% 11/15/2030 Callable @ 100.000 11/15/2023		240,000		262,080
				1,353,350
General Obligation (44.6%)
Broadwater County K 12 School District No 1 Townsend 3.000% 07/01/2038 Callable @ 100.000 07/01/2030		475,000		516,819
Broadwater County K 12 School District No 1 Townsend 3.000% 07/01/2039 Callable @ 100.000 07/01/2030		410,000		444,661
Carbon County High School District No 1 Red Lodge 3.000% 07/01/2039 Callable @ 100.000 01/01/2031		475,000		525,070
Carbon County High School District No 1 Red Lodge 3.000% 07/01/2041 Callable @ 100.000 01/01/2031		255,000		280,217
Carbon County K 12 School District No 2 Bridger 3.000% 07/01/2037 Callable @ 100.000 01/01/2031		580,000		648,782
Carbon County K 12 School District No 2 Bridger 3.000% 07/01/2038 Callable @ 100.000 01/01/2031		600,000		669,450
Carbon County K 12 School District No 2 Bridger 3.000% 07/01/2039 Callable @ 100.000 01/01/2031		620,000		689,428
Carbon County K 12 School District No 2 Bridger 3.000% 07/01/2040 Callable @ 100.000 01/01/2031		535,000		592,898
Carbon County K 12 School District No 2 Bridger 3.000% 07/01/2041 Callable @ 100.000 01/01/2031		500,000		552,705
Cascade County Elementary School District No 1 Great Falls 4.000% 07/01/2031 Callable @ 100.000 07/01/2027		700,000		814,086
City & County of Butte Silver Bow MT 4.000% 07/01/2030 Callable @ 100.000 07/01/2026		225,000		256,340
City & County of Butte Silver Bow MT 4.000% 07/01/2032 Callable @ 100.000 07/01/2026		240,000		271,692
City & County of Butte Silver Bow MT 4.500% 07/01/2034 Callable @ 100.000 07/01/2026		850,000		985,618
City of Bozeman MT 4.000% 07/01/2028 Callable @ 100.000 01/01/2024		540,000		592,672
City of Bozeman MT 4.000% 07/01/2034 Callable @ 100.000 07/01/2029		500,000		591,610
City of Fort Benton MT 3.000% 07/01/2035 Callable @ 100.000 07/01/2030		715,000		794,451
City of Fort Benton MT 3.000% 07/01/2040 Callable @ 100.000 07/01/2030		770,000		838,468
City of Missoula MT 4.000% 07/01/2031 Callable @ 100.000 07/01/2025		250,000		280,313
County of Ravalli MT 4.250% 07/01/2030 Callable @ 100.000 07/01/2024		755,000		829,277
Desmet School District No 20 3.000% 07/01/2040 Callable @ 100.000 07/01/2030		320,000		349,862
DeSmet School District No 20 3.000% 07/01/2041 Callable @ 100.000 07/01/2031		200,000		223,852
Flathead County High School District No 5 Kalispell 5.000% 07/01/2039 Callable @ 100.000 07/01/2028		455,000		569,287
Flathead County School District No 6 Columbia Falls 4.000% 07/01/2039 Callable @ 100.000 07/01/2030		1,000,000		1,180,840
Gallatin County High School District No 7 Bozeman 3.000% 06/01/2035 Callable @ 100.000 06/01/2027		300,000		320,958
Gallatin County High School District No 7 Bozeman 3.000% 12/01/2034 Callable @ 100.000 06/01/2027		500,000		538,050
Gallatin County MO Etc MO High School District No J 24 Three Forks 4.000% 07/01/2037 Callable @ 100.000 07/01/2030		605,000		717,209
Gallatin County School District No 27 Monforton 4.250% 06/15/2026 Callable @ 100.000 06/15/2023		415,000		449,499
Gallatin County School District No 3 Manhattan 4.000% 07/01/2034 Callable @ 100.000 07/01/2026		465,000		524,334
Gallatin County School District No 44 Belgrade 3.500% 06/15/2028 Callable @ 100.000 06/15/2021		575,000		577,444
Gallatin County School District No 44 Belgrade 4.000% 06/01/2031 Callable @ 100.000 06/01/2029		265,000		317,754
Gallatin County School District No 44 Belgrade 4.000% 06/01/2036 Callable @ 100.000 06/01/2029		345,000		406,893
Gallatin County School District No 7 Bozeman 4.000% 12/01/2032 Callable @ 100.000 06/01/2026		610,000		688,123
Gallatin County School District No 7 Bozeman 4.000% 12/01/2033 Callable @ 100.000 06/01/2026		260,000		292,560
Gallatin County School District No 72 Ophir 4.000% 07/01/2034 Callable @ 100.000 07/01/2030		310,000		372,623
Gallatin County School District No 72 Ophir 4.000% 07/01/2035 Callable @ 100.000 07/01/2030		535,000		640,727
Gallatin County School District No 72 Ophir 4.000% 07/01/2036 Callable @ 100.000 07/01/2030		565,000		677,718
Gallatin County School District No 72 Ophir 4.000% 07/01/2037 Callable @ 100.000 07/01/2030		800,000		952,848
Hellgate School District No 4 5.000% 06/15/2028 Callable @ 100.000 06/15/2027		500,000		628,465
Hellgate School District No 4 5.000% 06/15/2029 Callable @ 100.000 06/15/2027		500,000		622,820
Hellgate School District No 4 5.000% 06/15/2030 Callable @ 100.000 06/15/2027		500,000		618,195
*Missoula County Elementary School District No 1 4.000% 07/01/2032 Callable @ 100.000 07/01/2026		500,000		564,155
Missoula County Elementary School District No 1 4.000% 07/01/2033 Callable @ 100.000 07/01/2026		750,000		849,503
Missoula County School District No 7 Lolo 3.000% 07/01/2045 Callable @ 100.000 07/01/2031		470,000		503,567
Missoula County School District No 7 Lolo 3.000% 07/01/2046 Callable @ 100.000 07/01/2031		480,000		512,928
Missoula County School District No 7 Lolo 3.000% 07/01/2047 Callable @ 100.000 07/01/2031		510,000		544,027
Missoula County School District No 7 Lolo 3.000% 07/01/2048 Callable @ 100.000 07/01/2031		540,000		574,004
Missoula High School District No 1 4.000% 07/01/2032 Callable @ 100.000 07/01/2026		275,000		312,345
Ravalli & Missoula Counties Joint School District No 15 6 4.000% 07/01/2038 Callable @ 100.000 07/01/2029		250,000		292,085
Ravalli & Missoula Counties Joint School District No 15 6 4.000% 07/01/2039 Callable @ 100.000 07/01/2029		250,000		291,260
Ravalli County High School District No 2 Stevensville 4.000% 07/01/2037 Callable @ 100.000 07/01/2029		250,000		290,640
Ravalli County High School District No 2 Stevensville 4.000% 07/01/2038 Callable @ 100.000 07/01/2029		965,000		1,120,288
Ravalli County High School District No 2 Stevensville 4.000% 07/01/2039 Callable @ 100.000 07/01/2029		355,000		410,962
*Silver Bow County School District No 1 4.000% 07/01/2038 Callable @ 100.000 07/01/2029		1,960,000		2,275,403
State of Montana 4.000% 08/01/2023		385,000		420,905
State of Montana 4.000% 08/01/2026 Callable @ 100.000 08/01/2024		855,000		959,233
State of Montana 4.000% 08/01/2027 Callable @ 100.000 08/01/2024		480,000		535,906
State of Montana 5.000% 08/01/2030		500,000		678,550
Stillwater County Elementary School District No 6 Columbus 5.000% 07/01/2039 Callable @ 100.000 07/01/2029		300,000		378,684
Stillwater County High School District No 6 Columbus 4.000% 07/01/2037 Callable @ 100.000 07/01/2029		530,000		632,105
Stillwater County High School District No 6 Columbus 4.000% 07/01/2039 Callable @ 100.000 07/01/2029		275,000		325,886
Valley County K 12 School District No 1 A Glasgow/MT 4.250% 07/01/2031 Callable @ 100.000 07/01/2023		450,000		484,565
Wibaux County School District No 6 Wibaux 3.000% 07/01/2029 Callable @ 100.000 07/01/2025		355,000		379,307
Yellowstone County High School District No 7 Laurel 3.000% 07/01/2025		225,000		246,530
Yellowstone County K 12 School District No 26 Lockwood 5.000% 07/01/2037 Callable @ 100.000 07/01/2028		1,000,000		1,240,360
Yellowstone County K 12 School District No 26 Lockwood 5.000% 07/01/2038 Callable @ 100.000 07/01/2028		1,500,000		1,833,120
Yellowstone County School District No 2 Billings 3.000% 06/15/2032 Callable @ 100.000 12/15/2027		630,000		687,922
Yellowstone County School District No 2 Billings 3.000% 06/15/2034 Callable @ 100.000 12/15/2027		315,000		341,041
Yellowstone County School District No 2 Billings 3.000% 06/15/2035 Callable @ 100.000 12/15/2027		430,000		460,831
Yellowstone County School District No 2 Billings 5.000% 06/15/2024		500,000		578,380
Yellowstone County School District No 8 Elder Grove 4.000% 07/01/2037 Callable @ 100.000 07/01/2028		875,000		1,004,754
				42,573,860
Health Care (15.6%)
County of Yellowstone MT 4.000% 10/01/2029 Callable @ 100.000 10/01/2024		710,000		785,927
Montana Facility Finance Authority 3.000% 07/01/2040 Callable @ 100.000 07/01/2030		2,000,000		2,170,820
Montana Facility Finance Authority 4.000% 01/01/2037 Callable @ 100.000 01/01/2030		200,000		237,934
Montana Facility Finance Authority 4.000% 01/01/2038 Callable @ 100.000 01/01/2030		1,000,000		1,177,000
*Montana Facility Finance Authority 4.000% 07/01/2035 Callable @ 100.000 07/01/2030		1,075,000		1,222,727
Montana Facility Finance Authority 4.500% 07/01/2023		1,025,000		1,025,830
*Montana Facility Finance Authority 4.650% 07/01/2024		1,365,000		1,366,037
Montana Facility Finance Authority 4.750% 07/01/2025		380,000		380,236
Montana Facility Finance Authority 5.000% 06/01/2028 Callable @ 100.000 12/01/2024		1,015,000		1,140,038
Montana Facility Finance Authority 5.000% 06/01/2029 Callable @ 100.000 06/01/2025		915,000		1,036,064
Montana Facility Finance Authority 5.000% 06/01/2035 Callable @ 100.000 06/01/2028		425,000		516,243
Montana Facility Finance Authority 5.000% 06/01/2036 Callable @ 100.000 06/01/2028		700,000		847,175
Montana Facility Finance Authority 5.000% 07/01/2032 Callable @ 100.000 07/01/2028		1,000,000		1,217,680
Montana Facility Finance Authority 5.000% 07/01/2033 Callable @ 100.000 07/01/2028		1,000,000		1,208,690
Montana Facility Finance Authority 5.000% 08/15/2048 Callable @ 100.000 08/15/2028		500,000		606,470
				14,938,871
Housing (7.1%)
Montana Board of Housing 2.250% 12/01/2040 Callable @ 100.000 12/01/2029		500,000		503,395
Montana Board of Housing 2.800% 12/01/2039 Callable @ 100.000 06/01/2029		895,000		928,554
Montana Board of Housing 3.000% 12/01/2023 Callable @ 100.000 12/01/2022		70,000		71,455
Montana Board of Housing 3.000% 12/01/2045 Callable @ 100.000 06/01/2029		500,000		515,385
Montana Board of Housing 3.100% 06/01/2021		260,000		260,369
Montana Board of Housing 3.150% 06/01/2024 Callable @ 100.000 12/01/2022		270,000		278,132
Montana Board of Housing 3.150% 12/01/2024 Callable @ 100.000 12/01/2022		95,000		97,452
Montana Board of Housing 3.250% 12/01/2044 Callable @ 100.000 12/01/2028		1,500,000		1,576,800
Montana Board of Housing 3.350% 06/01/2025 Callable @ 100.000 12/01/2022		125,000		127,826
Montana Board of Housing 3.400% 12/01/2033 Callable @ 100.000 12/01/2027		460,000		504,077
Montana Board of Housing 3.800% 12/01/2038 Callable @ 100.000 06/01/2028		990,000		1,088,238
Montana Board of Housing 3.875% 12/01/2023 Callable @ 100.000 06/01/2023		130,000		135,699
Montana Board of Housing 4.050% 06/01/2024 Callable @ 100.000 06/01/2023		115,000		122,380
Montana Board of Housing 4.050% 12/01/2024 Callable @ 100.000 06/01/2023		330,000		347,800
Montana Board of Housing 4.650% 12/01/2028 Callable @ 100.000 06/01/2023		185,000		194,785
				6,752,347
Other Revenue (8.8%)
City & County of Butte Silver Bow MT 5.000% 07/01/2021		210,000		211,058
City of Billings MT 4.000% 07/01/2036 Callable @ 100.000 07/01/2030		405,000		462,093
City of Billings MT 4.375% 07/01/2029 Callable @ 100.000 01/01/2023		490,000		500,334
City of Billings MT 4.800% 07/01/2022		25,000		25,005
City of Billings MT 5.000% 07/01/2032 Callable @ 100.000 07/01/2028		710,000		805,616
*City of Billings MT 5.000% 07/01/2033 Callable @ 100.000 01/01/2023		900,000		929,286
City of Billings MT 5.500% 07/01/2026 Callable @ 100.000 07/01/2021		205,000		205,726
City of Great Falls MT 3.000% 07/01/2035 Callable @ 100.000 07/01/2030		1,005,000		1,023,030
City of Kalispell MT 5.000% 07/01/2033 Callable @ 100.000 07/01/2028		500,000		625,265
City of Livingston MT 4.000% 07/01/2034 Callable @ 100.000 01/01/2029		525,000		597,828
City of Missoula MT 4.750% 07/01/2027		105,000		105,056
City of Missoula MT 5.125% 07/01/2026		125,000		125,031
City of Missoula MT 6.000% 07/01/2030		200,000		200,054
Gallatin County Rural Improvement District 5.500% 07/01/2025		400,000		400,332
*Gallatin County Rural Improvement District 6.000% 07/01/2030		1,000,000		1,000,390
Madison County Rural Improvement District 5.500% 07/01/2025		185,000		185,150
*Madison County Rural Improvement District 6.000% 07/01/2030		1,000,000		1,000,370
				8,401,623
Pre-Refunded (6.5%)
*Montana State Board of Regents 4.000% 05/15/2025 Callable @ 100.000 05/15/2022		2,000,000		2,082,460
Montana State Board of Regents 4.000% 05/15/2026 Callable @ 100.000 05/15/2022		1,145,000		1,192,208
Montana State Board of Regents 5.000% 11/15/2023 Callable @ 100.000 11/15/2021		250,000		256,758
Yellowstone County School District No 2 Billings 5.000% 06/15/2026 Callable @ 100.000 06/15/2024		515,000		590,664
Yellowstone County School District No 2 Billings 5.000% 06/15/2027 Callable @ 100.000 06/15/2024		1,000,000		1,143,210
Yellowstone County School District No 2 Billings 5.000% 06/15/2031 Callable @ 100.000 06/15/2025		350,000		407,589
Yellowstone County School District No 2 Billings 5.000% 06/15/2032 Callable @ 100.000 06/15/2025		435,000		505,044
				6,177,932
Transportation (1.6%)
Missoula Parking Commission 4.000% 10/01/2026 Callable @ 100.000 04/01/2024		835,000		916,496
Missoula Special Improvement Districts/MT 4.600% 07/01/2024		100,000		100,100
Missoula Special Improvement Districts/MT 4.600% 07/01/2025		105,000		105,092
Missoula Special Improvement Districts/MT 5.400% 07/01/2029		370,000		370,137
				1,491,825
Utilities (4.2%)
City of Billings MT 5.000% 07/01/2031 Callable @ 100.000 07/01/2027		260,000		322,213
City of Billings MT Solid Waste System Revenue 3.500% 07/01/2039 Callable @ 100.000 07/01/2027		1,510,000		1,653,979
City of Billings MT Storm Sewer Revenue 4.000% 07/01/2025 Callable @ 100.000 07/01/2023		215,000		233,157
City of Billings MT Storm Sewer Revenue 4.000% 07/01/2026 Callable @ 100.000 07/01/2023		225,000		243,088
City of Billings MT Storm Sewer Revenue 4.000% 07/01/2028 Callable @ 100.000 07/01/2025		250,000		284,758
City of Billings MT Storm Sewer Revenue 4.000% 07/01/2029 Callable @ 100.000 07/01/2025		250,000		281,675
City of Dillon MT Water & Sewer System Revenue 4.000% 07/01/2033 Callable @ 100.000 07/01/2025		250,000		280,385
City of Missoula MT Water System Revenue 4.000% 07/01/2037 Callable @ 100.000 07/01/2028		600,000		711,144
				4,010,397

TOTAL MUNICPAL BONDS (COST: $81,506,631)			$	85,700,206

OTHER ASSETS LESS LIABILITIES (10.2%)			$	9,749,480

NET ASSETS (100.0%)			$	95,449,686

*Indicates bonds are segregated by the custodian to cover when-issued or delayed-delivery purchases.

VIKING TAX-FREE FUND FOR NORTH DAKOTA
Schedule of Investments April 30, 2021 *(unaudited)*
		Principal		Fair
		Amount		Value
MUNICIPAL BONDS (87.6%)

Education (9.1%)
State Board of Higher Education of the State of North Dakota 3.125% 07/01/2037 Callable @ 100.000 07/01/2029	$	200,000	$	197,944
State Board of Higher Education of the State of North Dakota 3.200% 07/01/2039 Callable @ 100.000 07/01/2029		200,000		197,634
State Board of Higher Education of the State of North Dakota 3.250% 04/01/2037 Callable @ 100.000 04/01/2027		250,000		264,550
State Board of Higher Education of the State of North Dakota 4.000% 04/01/2025 Callable @ 100.000 04/01/2024		415,000		462,165
State Board of Higher Education of the State of North Dakota 4.000% 04/01/2028 Callable @ 100.000 04/01/2024		365,000		393,908
State Board of Higher Education of the State of North Dakota 4.000% 04/01/2033 Callable @ 100.000 04/01/2025		500,000		546,070
State Board of Higher Education of the State of North Dakota 4.000% 04/01/2044 Callable @ 100.000 04/01/2029		500,000		573,785
University of North Dakota 5.000% 04/01/2024 Callable @ 100.000 04/01/2022		250,000		261,253
				2,897,308
General Obligation (20.2%)
City of Fargo ND 4.000% 05/01/2023 Callable @ 100.000 05/01/2021		300,000		300,036
City of Grand Forks ND 4.000% 12/01/2039 Callable @ 100.000 12/01/2028		470,000		540,368
City of Grand Forks ND 4.500% 05/01/2032 Callable @ 100.000 05/01/2025		240,000		264,917
City of Horace ND 3.000% 05/01/2037 Callable @ 100.000 05/01/2026		500,000		525,885
City of Horace ND 4.250% 05/01/2035 Callable @ 100.000 05/01/2023		340,000		355,011
City of Minot ND Airport Revenue 3.500% 10/01/2025 Callable @ 100.000 10/01/2022		570,000		594,037
City of Minot ND Airport Revenue 4.000% 10/01/2028 Callable @ 100.000 10/01/2022		355,000		369,985
City of West Fargo ND 2.000% 05/01/2037 Callable @ 100.000 05/01/2026		500,000		502,375
City of West Fargo ND 2.250% 05/01/2040 Callable @ 100.000 05/01/2026		500,000		504,015
City of Williston ND 4.000% 05/01/2035 Callable @ 100.000 05/01/2023		200,000		208,778
City of Williston ND 4.000% 05/01/2038 Callable @ 100.000 05/01/2023		230,000		239,492
Dickinson Public School District No 1 4.000% 08/01/2034 Callable @ 100.000 08/01/2025		400,000		441,344
Mandan Public School District No 1 3.125% 08/01/2024 Callable @ 100.000 08/01/2022		200,000		207,880
Nesson Public School District No 2 4.000% 08/01/2039 Callable @ 100.000 08/01/2027		500,000		559,110
Thompson Public School District No 61 1.550% 08/01/2038 Callable @ 100.000 08/01/2028		275,000		266,032
West Fargo Public School District No 6 3.000% 08/01/2036 Callable @ 100.000 08/01/2028		500,000		555,620
				6,434,885
Health Care (15.2%)
City of Grand Forks ND 4.000% 12/01/2027 Callable @ 100.000 12/01/2021		400,000		405,368
City of Grand Forks ND 5.000% 12/01/2022 Callable @ 100.000 12/01/2021		500,000		514,205
City of Grand Forks ND 5.000% 12/01/2032 Callable @ 100.000 12/01/2021		250,000		254,865
City of Grand Forks ND 5.125% 12/01/2025		250,000		273,348
City of Langdon ND 6.200% 01/01/2025		130,000		130,108
County of Burleigh ND 3.500% 11/01/2028 Callable @ 101.000 11/01/2025		215,000		221,237
County of Burleigh ND 4.000% 11/01/2032 Callable @ 101.000 11/01/2025		250,000		256,523
County of Cass ND 4.125% 02/15/2037 Callable @ 100.000 02/15/2028		595,000		673,629
*County of Cass ND 4.250% 02/15/2043 Callable @ 100.000 02/15/2028		1,290,000		1,447,832
County of Cass ND 5.000% 02/15/2033 Callable @ 100.000 02/15/2028		445,000		539,892
County of Ward ND 5.000% 06/01/2053 Callable @ 100.000 06/01/2028		100,000		113,293
				4,830,299
Housing (8.4%)
North Dakota Housing Finance Agency 2.950% 07/01/2039 Callable @ 100.000 01/01/2029		250,000		263,913
North Dakota Housing Finance Agency 3.000% 07/01/2040 Callable @ 100.000 07/01/2029		315,000		330,246
North Dakota Housing Finance Agency 3.050% 07/01/2021		135,000		135,207
North Dakota Housing Finance Agency 3.050% 07/01/2043 Callable @ 100.000 01/01/2029		250,000		259,983
North Dakota Housing Finance Agency 3.500% 07/01/2035 Callable @ 100.000 07/01/2028		235,000		256,752
North Dakota Housing Finance Agency 3.550% 07/01/2033 Callable @ 100.000 07/01/2027		185,000		200,941
*North Dakota Housing Finance Agency 3.550% 07/01/2040 Callable @ 100.000 07/01/2026		680,000		723,058
North Dakota Housing Finance Agency 3.750% 07/01/2038		470,000		499,356
				2,669,454
Other Revenue (22.6%)
City of Grand Forks ND 5.000% 12/15/2028 Callable @ 100.000 12/15/2025		250,000		297,830
*City of Mandan ND 3.250% 09/01/2041 Callable @ 100.000 09/01/2024		1,250,000		1,289,788
*City of Mandan ND 4.000% 09/01/2034 Callable @ 100.000 09/01/2024		500,000		539,500
City of Minot ND 2.000% 10/01/2042 Callable @ 100.000 10/01/2028		595,000		577,483
County of Barnes ND 4.000% 05/01/2032 Callable @ 100.000 05/01/2025		250,000		274,090
County of Barnes ND 4.000% 05/01/2040 Callable @ 100.000 05/01/2025		500,000		540,685
Jamestown Park District/ND 3.000% 07/01/2035 Callable @ 100.000 07/01/2024		500,000		517,040
Jamestown Park District/ND 4.000% 07/01/2032 Callable @ 100.000 07/01/2024		500,000		537,680
Jamestown Park District/ND 4.000% 07/01/2033 Callable @ 100.000 07/01/2024		345,000		370,299
Minot Park District 3.000% 12/01/2028 Callable @ 100.000 12/01/2023		250,000		261,058
Minot Park District 3.750% 12/01/2038 Callable @ 100.000 12/01/2025		435,000		469,317
North Dakota Public Finance Authority 4.000% 06/01/2028 Callable @ 100.000 06/01/2024		265,000		289,915
North Dakota Public Finance Authority 4.000% 06/01/2030 Callable @ 100.000 06/01/2023		400,000		424,572
North Dakota Public Finance Authority 4.500% 06/01/2026 Callable @ 100.000 06/01/2021		400,000		401,520
North Dakota Public Finance Authority 5.000% 06/01/2028 Callable @ 100.000 06/01/2025		130,000		152,399
North Dakota Public Finance Authority 5.000% 06/01/2031		240,000		240,060
				7,183,236
Pre-Refunded (7.0%)
City of Fargo ND 6.000% 11/01/2028 Callable @ 100.000 11/01/2021		500,000		513,895
County of Burleigh ND 4.500% 07/01/2032 Callable @ 100.000 07/01/2022		250,000		262,783
County of Burleigh ND 5.000% 07/01/2022		300,000		318,078
County of Burleigh ND 5.000% 07/01/2035 Callable @ 100.000 07/01/2021		500,000		504,045
County of Burleigh ND Multi County Sales Tax Revenue 4.000% 11/01/2032 Callable @ 100.000 11/01/2022		400,000		415,960
Grand Forks Regional Airport Authority 4.500% 06/01/2028 Callable @ 100.000 06/01/2021		230,000		230,846
				2,245,607
Transportation (1.2%)
Grand Forks Regional Airport Authority 4.500% 06/01/2028 Callable @ 100.000 06/01/2021		370,000		371,421

Utilities (3.9%)
City of Grand Forks ND Sanitation Revenue 2.600% 09/01/2038 Callable @ 100.000 09/01/2027		290,000		298,671
City of Grand Forks ND Sanitation Revenue 2.625% 09/01/2040 Callable @ 100.000 09/01/2027		485,000		496,732
City of West Fargo ND Water & Sewer Revenue 2.625% 11/01/2034 Callable @ 100.000 11/01/2025		250,000		254,853
Mclean Sheridan Water District 2.000% 09/01/2038 Callable @ 100.000 09/01/2028		205,000		201,052
				1,251,307

TOTAL MUNICIPAL BONDS (COST: $26,747,121)			$	27,883,517

OTHER ASSETS LESS LIABILITIES (12.4%)				3,949,877

NET ASSETS (100.0%)			$	31,833,394

*Indicates bonds are segregated by the custodian to cover when-issued or delayed delivery purchases.

NOTE: INVESTMENT IN SECURITIES (unaudited)
April 30, 2021, the net unrealized appreciation (depreciation) based on the cost of investments for federal income tax purposes was as follows:
	Kansas Municipal Fund	Maine Municipal Fund	Nebraska Municipal Fund	Oklahoma Municipal Fund	Viking Tax-Free Fund for Montana	Viking Tax-Free Fund for North Dakota
Investments at cost	$68,537,222	$12,838,065	$49,765,922	$68,979,594	$81,506,631	$26,747,121
Unrealized appreciation	$4,032,990	$679,652	$2,494,666	$3,108,267	$4,277,997	$1,200,057
Unrealized depreciation	($72,634)	$0	($51,531)	($88,502)	($84,422)	($63,661)
Net unrealized appreciation (depreciation)*	$3,960,356	$679,652	$2,443,135	$3,019,765	$4,193,575	$1,136,396

*Differences between financial reporting-basis and tax-basis unrealized appreciation/(depreciation) are due to differing treatment of market discount.

NOTE: FAIR VALUE MEASUREMENTS (unaudited)
Various inputs are used in determining the value of the Funds' investments. These inputs are summarized in three broad levels: Level 1 inputs are based on quoted prices in active markets for identical securities. Level 2 inputs are based on significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.) Level 3 inputs are based on significant unobservable inputs (including the Fund's own assumptions in determining the fair value of investments.) The following is a summary of the inputs used to value the Funds’ investments as of April 30, 2021:

Kansas Municipal Fund

	Level 1	Level 2	Level 3	Total
Municipal Bonds	$0	$72,497,578	$0	$72,497,578
Total	$0	$72,497,578	$0	$72,497,578
Maine Municipal Fund

	Level 1	Level 2	Level 3	Total
Municipal Bonds	$0	$13,517,717	$0	$13,517,717
Total	$0	$13,517,717	$0	$13,517,717
Nebraska Municipal Fund

	Level 1	Level 2	Level 3	Total
Municipal Bonds	$0	$52,209,057	$0	$52,209,057
Total	$0	$52,209,057	$0	$52,209,057
Oklahoma Municipal Fund

	Level 1	Level 2	Level 3	Total
Municipal Bonds	0	71,999,359	0	71,999,359
Total	$0	71,999,359	$0	71,999,359
Viking Tax-Free Fund for Montana

	Level 1	Level 2	Level 3	Total
Municipal Bonds	$0	$85,700,206	$0	$85,700,206
Total	$0	$85,700,206	$0	$85,700,206
Viking Tax-Free Fund for North Dakota

	Level 1	Level 2	Level 3	Total
Municipal Bonds	$0	$27,883,517	$0	$27,883,517
Total	$0	$27,883,517	$0	$27,883,517