Oberweis Micro-Cap Fund

Schedule of Investments (unaudited)

March 31, 2024

			Shares		Value
Equities	97.3	%
Automobile Components	2.2	%
Gentherm, Inc.*				73,500	$	4,232,130
Modine Manufacturing Co.*				64,500		6,139,755
						10,371,885
Banks	2.8	%
1st Source Corp.				63,900		3,349,638
Mercantile Bank Corp.				66,000		2,540,340
Preferred Bank				95,000		7,293,150
						13,183,128
Beverages	0.7	%
The Vita Coco Co., Inc.*				141,500		3,456,845
Biotechnology	8.6	%
ADMA Biologics, Inc.*				2,790,700		18,418,620
Catalyst Pharmaceuticals, Inc.*				458,400		7,306,896
Dynavax Technologies Corp.*				462,700		5,742,107
MannKind Corp.*				798,800		3,618,564
Veracyte, Inc.*				251,200		5,566,592
						40,652,779
Building Products	0.9	%
JELD WEN Hldg., Inc.*				192,600		4,088,898
Chemicals	0.6	%
Hawkins, Inc.				37,200		2,856,960
Commercial Services & Supplies	4.7	%
Aris Water Solutions, Inc.				195,200		2,762,080
CECO Environmental Corp.*				463,400		10,667,468
HNI Corp.				83,400		3,763,842
VSE Corp.				66,300		5,304,000
						22,497,390
Communications Equipment	4.1	%
Applied Optoelectronics, Inc.*				849,615		11,775,664
Aviat Networks, Inc.*				199,307		7,641,430
						19,417,094
Construction & Engineering	6.1	%
Limbach Hldgs., Inc.*				164,800		6,826,016
Matrix Service Co.*				198,500		2,586,455
Primoris Services Corp.				209,900		8,935,443
Sterling Construction Co., Inc.*				96,600		10,655,946
						29,003,860
Consumer Finance	1.6	%
EZCORP, Inc.*				685,500		7,766,715
Diversified Consumer Services	1.2	%
OneSpaWorld Hldgs. Ltd.*				420,400		5,561,892
Electrical Equipment	2.3	%
American Superconductor Corp.*				634,400		8,570,744
Powell Industries, Inc.				16,800		2,390,640
						10,961,384
Electronic Equipment, Instruments & Components	0.7	%
Arlo Technologies, Inc.*				273,400		3,458,510
Energy Equipment & Services	2.8	%
Helix Energy Solutions Group, Inc.*				407,500		4,417,300
Precision Drilling Corp.*				59,700		4,017,213
RPC, Inc.				604,600		4,679,604
						13,114,117
Entertainment	0.8	%
IMAX Corp.*				236,200		3,819,354
Healthcare Equipment & Supplies	7.4	%
Alphatec Hldgs., Inc.*				510,500		7,039,795
Artivion, Inc.*				282,400		5,975,584
Axogen, Inc.*				286,400		2,311,248
LeMaitre Vascular, Inc.				68,500		4,545,660
RxSight, Inc.*				107,600		5,550,008
SI BONE, Inc.*				310,400		5,081,248
TransMedics Group, Inc.*				63,300		4,680,402
						35,183,945
Healthcare Providers & Services	1.3	%
PetIQ, Inc.*				340,700		6,227,996
Hotels, Restaurants & Leisure	3.4	%
BJ's Restaurants, Inc.*				63,600		2,301,048
Playa Hotels & Resorts NV*				751,500		7,289,550
Rush Street Interactive, Inc.*				776,700		5,056,317
Sweetgreen, Inc.*				67,101		1,694,971
						16,341,886
Household Durables	1.0	%
M/I Homes, Inc.*				36,200		4,933,698
Information Technology Services	1.3	%
Backblaze, Inc.*				357,800		3,660,294
Couchbase, Inc.*				87,800		2,310,018
						5,970,312
Insurance	1.7	%
Employers Hldgs., Inc.				86,100		3,908,079
Skyward Specialty Insurance Group, Inc.*				115,700		4,328,337
						8,236,416
Life Sciences Tools & Services	0.5	%
Quanterix Corp.*				99,700		2,348,932
Machinery	4.9	%
Blue Bird Corp.*				299,100		11,467,494
Enerpac Tool Group Corp.*				77,300		2,756,518
Proto Labs, Inc.*				97,500		3,485,625
REV Group, Inc.				126,300		2,789,967
The Gorman-Rupp Corp.				68,900		2,724,995
						23,224,599
Oil, Gas & Consumable Fuels	1.8	%
Dorian LPG Ltd.				75,500		2,903,730
Vital Energy, Inc.*				109,400		5,747,876
						8,651,606
Paper & Forest Products	1.0	%
Clearwater Paper Corp.*				112,200		4,906,506
Passenger Airlines	1.0	%
Sun Country Airlines Hldgs., Inc.*				325,600		4,913,304
Pharmaceuticals	3.5	%
Amphastar Pharmaceuticals, Inc.*				129,100		5,668,781
ANI Pharmaceuticals, Inc.*				43,500		3,007,155
Evolus, Inc.*				397,300		5,562,200
Liquidia Corp.*				150,000		2,212,500
						16,450,636
Professional Services	3.5	%
Huron Consulting Group, Inc.*				49,200		4,753,704
ICF International, Inc.				41,100		6,190,893
Upwork, Inc.*				469,200		5,752,392
						16,696,989
Semiconductors & Semiconductor Equipment	17.4	%
ACM Research, Inc.*				416,500		12,136,810
Aehr Test Systems*				534,400		6,626,560
Axcelis Technologies, Inc.*				50,400		5,620,608
Camtek Ltd.*				178,180		14,926,139
Navitas Semiconductor Corp.*				806,600		3,847,482
Photronics, Inc.*				256,100		7,252,752
Silicon Motion Technology Corp. ADS				106,900		8,224,886
Ultra Clean Hldgs., Inc.*				319,600		14,682,424
Veeco Instruments, Inc.*				269,100		9,464,247
						82,781,908
Software	2.8	%
AvePoint, Inc.*				266,800		2,113,056
Cellebrite DI Ltd.*				397,900		4,408,732
Weave Communications, Inc.*				609,400		6,995,912
						13,517,700
Specialty Retail	1.1	%
Boot Barn Hldgs., Inc.*				54,400		5,176,160
Textiles, Apparel & Luxury Goods	1.9	%
G-III Apparel Group Ltd.*				220,900		6,408,309
Oxford Industries, Inc.				23,400		2,630,160
						9,038,469
Trading Co. & Distribution	1.7	%
H&E Equipment Services, Inc.				69,500		4,460,510
Transcat, Inc.*				29,100		3,242,613
						7,703,123
Total Equities
(Cost: $374,581,120)					$	462,514,996
Total Investments	97.3	%
(Cost: $374,581,120)					$	462,514,996
Other Assets Less Liabilities	2.7	%				12,796,627
Net Assets - 100%					$	475,311,623

* Non-income producing security during the period ended March 31, 2024

ADS - American depositary share

Oberweis Small-Cap Opportunities Fund

Schedule of Investments (unaudited)

March 31, 2024

			Shares		Value
Equities	97.4	%
Aerospace & Defense	3.2	%
AeroVironment, Inc.*				101,500	$	15,557,920
Woodward, Inc.				68,400		10,541,808
						26,099,728
Banks	0.5	%
First Merchants Corp.				123,400		4,306,660
Beverages	0.7	%
Primo Water Corp.				323,500		5,890,935
Biotechnology	1.6	%
Krystal Biotech, Inc.*				35,700		6,352,101
Veracyte, Inc.*				307,900		6,823,064
						13,175,165
Building Products	5.0	%
AAON, Inc.				48,400		4,264,040
Gibraltar Industries, Inc.*				52,800		4,251,984
Janus International Group, Inc.*				695,400		10,521,402
Simpson Manufacturing Co., Inc.				24,800		5,088,464
The AZEK Co., Inc.*				220,900		11,093,598
Trex Co., Inc.*				60,100		5,994,975
						41,214,463
Chemicals	2.0	%
Cabot Corp.				92,100		8,491,620
Quaker Chemical Corp.				40,500		8,312,625
						16,804,245
Commercial Services & Supplies	2.6	%
Clean Harbors, Inc.*				63,300		12,742,923
MSA Safety, Inc.				44,200		8,556,678
						21,299,601
Construction & Engineering	1.3	%
Comfort Systems USA, Inc.				19,800		6,290,658
Dycom Industries, Inc.*				29,000		4,162,370
						10,453,028
Consumer Finance	1.4	%
FirstCash Hldgs., Inc.				91,700		11,695,418
Consumer Staples Distribution & Retail	1.5	%
Grocery Outlet Hldg. Corp.*				296,000		8,518,880
Sprouts Farmers Market, Inc.*				64,700		4,171,856
						12,690,736
Diversified Consumer Services	2.7	%
Duolingo, Inc.*				18,900		4,168,962
Frontdoor, Inc.*				260,200		8,477,316
Grand Canyon Education, Inc.*				43,200		5,884,272
Stride, Inc.*				66,000		4,161,300
						22,691,850
Electrical Equipment	3.7	%
NEXTracker, Inc.*				235,700		13,262,839
Vertiv Hldgs. Co.				211,400		17,265,038
						30,527,877
Electronic Equipment, Instruments & Components	2.9	%
Fabrinet*				21,900		4,139,538
Itron, Inc.*				125,600		11,620,512
OSI Systems, Inc.*				55,300		7,897,946
						23,657,996
Energy Equipment & Services	3.9	%
Liberty Energy, Inc.				236,300		4,896,136
NOV, Inc.				216,900		4,233,888
Weatherford International PLC*				198,500		22,910,870
						32,040,894
Healthcare Equipment & Supplies	8.8	%
Alphatec Hldgs., Inc.*				587,400		8,100,246
Axonics, Inc.*				145,400		10,028,238
Haemonetics Corp.*				133,900		11,428,365
Integer Hldgs. Corp.*				96,700		11,282,956
LivaNova PLC*				202,500		11,327,850
Merit Medical Systems, Inc.*				139,300		10,551,975
TransMedics Group, Inc.*				134,900		9,974,506
						72,694,136
Healthcare Providers & Services	5.2	%
Acadia Healthcare Co., Inc.*				143,300		11,352,226
Encompass Health Corp.				192,400		15,888,392
HealthEquity, Inc.*				51,300		4,187,619
NeoGenomics, Inc.*				737,200		11,588,784
						43,017,021
Healthcare Technology	1.1	%
Evolent Health, Inc.*				282,500		9,263,175
Hotels, Restaurants & Leisure	2.2	%
Light & Wonder, Inc.*				42,600		4,349,034
Monarch Casino and Resort, Inc.				86,200		6,464,138
Wingstop, Inc.				20,000		7,328,000
						18,141,172
Household Durables	4.1	%
Century Communities, Inc.				121,200		11,695,800
Installed Building Products, Inc.				30,400		7,865,392
SharkNinja, Inc.*				235,200		14,650,608
						34,211,800
Insurance	1.6	%
Assurant, Inc.				45,000		8,470,800
Oscar Health, Inc.*				295,000		4,386,650
						12,857,450
Machinery	7.1	%
Esab Corp.				129,200		14,285,644
Federal Signal Corp.				127,700		10,837,899
Flowserve Corp.				237,700		10,858,136
Oshkosh Corp.				111,700		13,930,107
SPX Technologies, Inc.*				69,000		8,495,970
						58,407,756
Metals & Mining	1.4	%
ATI, Inc.*				141,900		7,261,023
Carpenter Technology Corp.				61,800		4,413,756
						11,674,779
Oil, Gas & Consumable Fuels	2.5	%
International Seaways, Inc.				198,700		10,570,840
Magnolia Oil & Gas Corp.				184,600		4,790,370
Matador Resources Co.				82,400		5,501,848
						20,863,058
Passenger Airlines	2.0	%
SkyWest, Inc.*				243,100		16,793,348
Personal Care Products	1.8	%
elf Beauty, Inc.*				40,800		7,998,024
Inter Parfums, Inc.				48,300		6,786,633
						14,784,657
Pharmaceuticals	1.3	%
Amphastar Pharmaceuticals, Inc.*				245,400		10,775,514
Professional Services	4.0	%
ExlService Hldgs., Inc.*				133,200		4,235,760
ICF International, Inc.				55,800		8,405,154
Maximus, Inc.				89,700		7,525,830
Parsons Corp.*				151,300		12,550,335
						32,717,079
Semiconductors & Semiconductor Equipment	11.0	%
Aehr Test Systems*				412,942		5,120,481
Allegro MicroSystems, Inc.*				200,000		5,392,000
Axcelis Technologies, Inc.*				130,400		14,542,208
Credo Technology Group Hldg. Ltd.*				321,900		6,821,061
FormFactor, Inc.*				236,700		10,800,621
Onto Innovation, Inc.*				93,100		16,858,548
Silicon Laboratories, Inc.* ADS				78,000		11,210,160
Silicon Motion Technology Corp.*				110,500		8,501,870
Universal Display Corp.				67,100		11,302,995
						90,549,944
Software	7.4	%
ACI Worldwide, Inc.*				344,562		11,442,904
Blackbaud, Inc.*				57,300		4,248,222
Clear Secure, Inc.				500,500		10,645,635
Informatica, Inc.*				309,000		10,815,000
LiveRamp Hldgs., Inc.*				247,600		8,542,200
Rapid7, Inc.*				94,500		4,634,280
Zeta Global Hldgs. Corp.*				1,003,000		10,962,790
						61,291,031
Specialty Retail	0.7	%
Abercrombie & Fitch Co.*				48,100		6,028,373
Textiles, Apparel & Luxury Goods	2.2	%
Crocs, Inc.*				84,200		12,107,960
Deckers Outdoor Corp.*				7,200		6,777,072
						18,885,032
Total Equities
(Cost: $687,950,777)					$	805,503,921
Total Investments	97.4	%
(Cost: $687,950,777)					$	805,503,921
Other Assets Less Liabilities	2.6	%				21,412,129
Net Assets - 100%					$	826,916,050

* Non-income producing security during the period ended March 31, 2024

ADS - American depositary share

Oberweis Global Opportunities Fund

Schedule of Investments (unaudited)

March 31, 2024

			Shares		Value
Equities	98.1	%
Argentina	0.9	%
Arcos Dorados Hldgs., Inc.				43,800	$	487,056
Australia	2.6	%
James Hardie Industries PLC*				35,800		1,437,271
Canada	3.2	%
ATS Corp.*				25,000		841,208
Stantec, Inc.				11,200		929,833
						1,771,041
China	1.6	%
New Oriental Education & Technology Group, Inc.*				100,000		870,715
Finland	1.3	%
Kemira Oyj				38,000		718,265
France	1.1	%
Sopra Steria Group SA*				2,600		629,453
Germany	1.0	%
Gerresheimer AG*				5,000		563,168
India	2.2	%
Federal Bank Ltd.*				320,000		576,290
TVS Motor Co. Ltd.				25,000		645,020
						1,221,310
Indonesia	1.3	%
PT Sumber Alfaria Trijaya Tbk*				3,899,900		715,781
Japan	11.9	%
Asics Corp.				22,100		1,037,407
Daiwa Securities Group, Inc.				75,300		570,048
Fuji Electric Co. Ltd.				40,700		2,715,484
Santen Pharmaceutical Co. Ltd.				80,000		785,573
Yamazaki Baking Co. Ltd.*				54,800		1,411,449
						6,519,961
Norway	2.7	%
Kongsberg Gruppen ASA*				10,000		690,479
Subsea 7 SA*				50,000		799,762
						1,490,241
South Korea	1.3	%
Park Systems Corp.*				6,300		710,373
Sweden	2.3	%
Saab AB*				14,300		1,271,824
Switzerland	2.2	%
Accelleron Industries AG*				31,600		1,183,555
Taiwan	3.5	%
Alchip Technologies Ltd.*				6,000		593,373
eMemory Technology, Inc.*				10,000		749,918
M31 Technology Corp.*				13,800		554,096
						1,897,387
United Kingdom	13.0	%
Ashtead Technology Hldgs. PLC*				332,400		3,188,489
Cranswick PLC				16,500		853,010
Games Workshop Group PLC				6,200		785,662
Intermediate Capital Group PLC*				23,700		614,411
Marks & Spencer Group PLC*				272,200		910,769
The Sage Group PLC*				50,000		798,624
						7,150,965
United States of America	46.0	%
Acadia Healthcare Co., Inc.*				7,600		602,072
ACM Research, Inc.*				22,400		652,736
Alphatec Hldgs., Inc.*				175,800		2,424,282
Amphastar Pharmaceuticals, Inc.*				20,100		882,591
Axcelis Technologies, Inc.*				12,329		1,374,930
Clean Harbors, Inc.*				7,900		1,590,349
Deckers Outdoor Corp.*				700		658,882
ELF Beauty, Inc.*				2,700		529,281
Evolent Health, Inc.*				29,600		970,584
Flowserve Corp.				15,100		689,768
LeMaitre Vascular, Inc.				10,400		690,144
LiveRamp Hldgs., Inc.*				27,100		934,950
Merit Medical Systems, Inc.*				7,500		568,125
Onto Innovation, Inc.*				8,000		1,448,640
Oshkosh Corp.				9,500		1,184,745
Parsons Corp.*				18,800		1,559,460
RPC, Inc.				159,000		1,230,660
RxSight, Inc.*				17,000		876,860
SkyWest, Inc.*				18,200		1,257,256
Sweetgreen, Inc.*				27,800		702,228
The Vita Coco Co, Inc.*				21,200		517,916
Universal Display Corp.				3,100		522,195
Veracyte, Inc.*				67,100		1,486,936
Weatherford International PLC*				9,400		1,084,948
Zeta Global Hldgs. Corp.*				74,600		815,378
						25,255,916
Total Equities
(Cost: $45,795,372)					$	53,894,282
Total Investments	98.1	%
(Cost: $45,795,372)					$	53,894,282
Other Assets Less Liabilities	1.9	%				1,047,574
Net Assets - 100%					$	54,941,856

* Non-income producing security during the period ended March 31, 2024

SECTOR ALLOCATIONS (As a Percentage of Net Assets)
Consumer Discretionary	9.4	%
Consumer Staples	9.0	%
Energy	5.7	%
Financials	3.2	%
Healthcare	17.9	%
Industrials	31.1	%
Information Technology	17.8	%
Materials	4.0	%

Oberweis China Opportunities Fund

Schedule of Investments (unaudited)

March 31, 2024

			Shares		Value
Equities	100.0	%
Automobile Components	3.8	%
Cheng Shin Rubber Industry Co. Ltd.*			300,000	$	465,887
Tong Yang Industry Co. Ltd.*			300,000		1,171,747
					1,637,634
Automobiles	1.6	%
Li Auto, Inc. ADS*			23,000		696,440
Biotechnology	0.8	%
Legend Biotech Corp. ADS*			6,000		336,540
Broadline Retail	10.1	%
Alibaba Group Hldg. Ltd.			230,000		2,064,355
MINISO Group Hldg. Ltd. ADS			30,000		615,000
PDD Hldgs. ADS*			14,500		1,685,625
					4,364,980
Chemicals	2.0	%
Nan Pao Resins Chemical Co. Ltd.*			90,000		881,622
Diversified Consumer Services	5.8	%
New Oriental Education & Technology Group, Inc.*			255,000		2,220,324
TAL Education Group ADS*			25,000		283,750
					2,504,074
Electrical Equipment	2.3	%
Fortune Electric Co. Ltd.*			20,000		418,704
Shihlin Electric & Engineering Corp.*			65,000		568,688
					987,392
Electronic Equipment, Instruments & Components	6.1	%
Fositek Corp.*			15,000		363,242
Gold Circuit Electronics Ltd.*			95,000		725,780
Hexing Electrical Co. Ltd.*			30,000		149,554
Hon Hai Precision Industry Co. Ltd.*			200,000		971,769
WT Microelectronics Co. Ltd.*			93,809		439,682
					2,650,027
Entertainment	7.6	%
International Games System Co. Ltd.*			15,000		527,286
NetEase, Inc.			90,000		1,872,006
Tencent Music Entertainment Group ADS*			80,000		895,200
					3,294,492
Hotels, Restaurants & Leisure	9.5	%
H World Group Ltd.			240,000		929,103
Meituan*			80,000		989,408
Sands China Ltd.*			150,000		422,581
Trip.com Group Ltd.*			40,000		1,764,172
					4,105,264
Household Durables	2.9	%
Beijing Roborock Technology Co. Ltd.*			13,060		617,863
Hisense Home Appliances Group Co. Ltd.*			200,000		622,213
					1,240,076
Information Technology Services	0.7	%
GDS Hldgs. Ltd.*			350,000		284,851
Interactive Media & Services	5.2	%
Kanzhun Ltd. ADS*			7,000		122,710
Tencent Hldgs. Ltd.*			55,000		2,134,817
					2,257,527
Machinery	3.6	%
Sinotruk Hong Kong Ltd.*			200,000		491,127
Yangzijiang Shipbuilding Hldgs. Ltd.*			650,000		919,425
Zhuzhou CRRC Times Electric Co. Ltd.*			50,000		158,427
					1,568,979
Metals & Mining	3.5	%
Aluminum Corp of China Ltd.*			200,000		126,998
CMOC Group Ltd.*			552,000		468,998
Zijin Mining Group Co. Ltd.			450,000		898,056
					1,494,052
Oil, Gas & Consumable Fuels	5.1	%
China Shenhua Energy Co. Ltd.*			230,000		903,614
PetroChina Co. Ltd.*			1,500,000		1,282,117
					2,185,731
Pharmaceuticals	1.1	%
Hansoh Pharmaceutical Group Co. Ltd.*			250,000		494,449
Semiconductors & Semiconductor Equipment	20.2	%
Alchip Technologies Ltd.*			6,000		593,373
ASMedia Technology, Inc.*			18,000		1,299,233
ASMPT Ltd.*			20,000		251,441
Elan Microelectronics Corp.			140,000		702,111
Foxsemicon Integrated Technology, Inc.*			60,000		561,501
King Yuan Electronics Co. Ltd.*			220,000		728,670
M31 Technology Corp.*			23,500		943,569
MediaTek, Inc.			31,000		1,123,627
Taiwan Semiconductor Manufacturing Co. Ltd. ADS			18,500		2,516,925
					8,720,450
Specialty Retail	0.3	%
Pop Mart International Group Ltd.*			40,000		146,929
Technology Hardware, Storage & Peripherals	5.4	%
Asia Vital Components Co. Ltd.*			37,000		626,619
Chicony Electronics Co. Ltd.*			110,000		761,323
Wiwynn Corp.*			12,000		821,160
Xiaomi Corp.*			50,000		95,440
					2,304,542
Textiles, Apparel & Luxury Goods	1.7	%
Amer Sports, Inc.*			15,000		244,500
Makalot Industrial Co. Ltd.			40,000		456,825
					701,325
Water Utilities	0.7	%
Beijing Enterprises Water Group Ltd.*			1,250,000		277,888
Total Equities
(Cost: $36,959,075)				$	43,135,264
Total Investments	100.0	%
(Cost: $36,959,075)				$	43,135,264
Other Liabilities Less Assets	0.0	%			(7,152	)
Net Assets - 100%				$	43,128,112

* Non-income producing security during the period ended March 31, 2024

ADS - American depositary share

COUNTRY ALLOCATION  (As a Percentage of Net Assets)
China ( Includes the People's Republic of China, Taiwan and Hong Kong)	97.9	%
Singapore	2.1	%

Oberweis Emerging Markets Fund

Schedule of Investments (unaudited)

March 31, 2024

			Shares		Value
Equities	90.9	%
Argentina	3.3	%
Arcos Dorados Hldgs., Inc.				30,000	$	333,600
Despegar.com Corp.*				22,500		269,100
						602,700
Brazil	8.5	%
GPS Participacoes e Empreendimentos SA*				91,300		377,185
Petro Rio SA*				27,200		264,331
Santos Brasil Participacoes SA				131,100		348,178
VTEX*				66,500		543,305
						1,532,999
Chile	0.9	%
Embotelladora Andina SA				66,700		168,974
China	11.7	%
Chongqing Brewery Co. Ltd.*				43,900		392,382
DPC Dash Ltd.*				30,000		192,222
Haitian International Hldgs. Ltd.*				84,000		244,158
Hangzhou Robam Appliances Co. Ltd.				110,500		366,167
Jiangsu Hengli Hydraulic Co. Ltd.*				24,500		170,746
Kanzhun Ltd. ADS*				18,000		315,540
Uni-President China Hldgs. Ltd.*				260,000		185,029
Yihai International Hldg. Ltd.*				128,000		242,363
						2,108,607
France	1.4	%
Gaztransport & Technigaz SA*				1,750		261,490
Greece	1.2	%
Greek Organization of Football Prognostics SA*				12,500		224,943
Hungary	1.3	%
Richter Gedeon Nyrt*				9,200		233,391
India	18.6	%
Control Print Ltd.				16,600		185,073
Emudhra Ltd.*				25,500		231,419
Federal Bank Ltd.*				194,700		350,636
Kaynes Technology India Ltd.*				5,800		199,722
KEI Industries Ltd.				4,998		207,333
MakeMyTrip Ltd.*				8,600		611,030
Medi Assist Healthcare Services Ltd.*				35,400		214,622
Oracle Financial Services Software Ltd.*				3,850		405,027
SAMHI Hotels Ltd.*				100,000		253,470
Senco Gold Ltd.*				26,500		245,165
TVS Motor Co. Ltd.				9,600		247,688
Varun Beverages Ltd.*				12,236		205,189
						3,356,374
Indonesia	6.1	%
PT Avia Avian Tbk*				5,000,000		173,447
PT Cisarua Mountain Dairy Tbk*				620,000		191,611
PT Mitra Adiperkasa Tbk*				2,158,900		247,821
PT Sumber Alfaria Trijaya Tbk*				1,724,300		316,475
PT United Tractors Tbk*				112,000		170,773
						1,100,127
Mexico	7.0	%
Alsea, S.A.B. de CV*				88,300		435,432
BBB Foods, Inc.*				11,000		261,580
Prologis Property Mexico SA de CV				61,792		270,444
Regional SAB de CV*				30,200		297,359
						1,264,815
Philippines	3.1	%
International Container Terminal Services, Inc.				100,000		565,685
Poland	0.9	%
Dino Polska SA*				1,700		165,008
South Africa	1.2	%
Clicks Group Ltd.				14,080		220,128
South Korea	15.0	%
AfreecaTV Co. Ltd.				2,600		237,742
Classys, Inc.				9,627		253,860
Hugel, Inc.*				1,500		215,153
KakaoBank Corp.*				20,600		429,980
KINX, Inc.*				2,500		176,787
LEENO Industrial, Inc.*				1,988		380,987
Park Systems Corp.*				2,456		276,933
SK Square Co. Ltd.*				8,450		493,348
Tokai Carbon Korea Co. Ltd.				2,850		245,783
						2,710,573
Taiwan	8.8	%
Alchip Technologies Ltd.*				2,000		197,791
E Ink Hldgs., Inc.*				49,000		347,556
eMemory Technology, Inc.*				5,000		374,959
Ennoconn Corp.*				39,000		425,297
M31 Technology Corp.*				5,800		232,881
						1,578,484
Thailand	1.0	%
Mega Lifesciences PCL				145,300		165,261
United Kingdom	0.9	%
WAG Payment Solutions PLC*				173,000		146,295
Total Equities
(Cost: $13,652,898)					$	16,405,854
Short-Term Investments	9.7	%
Fidelity Investments Money Market Government Portfolio Class I  5.21%a				1,760,728		1,760,728
Total Short-Term Investments
(Cost: $1,760,728)					$	1,760,728
Total Investments	100.6	%
(Cost: $15,413,626)					$	18,166,582
Other Liabilities Less Assets	(0.6	)%				(105,807	)
Net Assets - 100%					$	18,060,775

^a Annualized seven-day effective yield as of March 31, 2024

* Non-income producing security during the period ended March 31, 2024

ADS - American depositary share

SECTOR ALLOCATIONS (As a Percentage of Net Assets)
Communication Services	7.1	%
Consumer Discretionary	19.0	%
Consumer Staples	13.0	%
Energy	3.9	%
Financials	6.8	%
Healthcare	6.0	%
Industrials	14.6	%
Information Technology	18.0	%
Materials	1.0	%
Real Estate	1.5	%

Oberweis International Opportunities Fund

Schedule of Investments (unaudited)

March 31, 2024

			Shares		Value
Equities	95.1	%
Australia	7.0	%
GrainCorp Ltd.*				920,623	$	4,943,264
James Hardie Industries PLC*				184,200		7,395,127
JB Hi-Fi Ltd.				146,412		6,129,917
Nick Scali Ltd.				434,700		4,362,296
Super Retail Group Ltd.				176,747		1,854,312
						24,684,916
Canada	10.1	%
Ag Growth International, Inc.				134,300		6,083,455
ATS Corp.*				138,575		4,662,814
Definity Financial Corp.				127,200		4,050,943
Element Fleet Management Corp.				319,400		5,161,425
Hammond Power Solutions, Inc.				20,000		2,140,853
Parex Resources, Inc.				232,615		3,716,070
SNC-Lavalin Group, Inc.				63,100		2,580,644
Stantec, Inc.				84,900		7,048,467
						35,444,671
Finland	2.1	%
Metso Corp.*				466,268		5,535,958
Outokumpu Oyj*				396,643		1,724,535
						7,260,493
France	7.2	%
Gaztransport Et Technigaz SA*				32,200		4,811,414
Rexel SA*				251,419		6,789,317
Sopra Steria Group SACA*				28,800		6,972,403
Spie SA*				179,300		6,735,598
						25,308,732
Germany	1.7	%
CTS Eventim AG & Co.*				66,651		5,928,768
Ireland	2.4	%
Glanbia PLC				433,400		8,547,364
Italy	4.5	%
Brunello Cucinelli SpA*				54,700		6,255,475
De' Longhi SpA*				201,500		6,969,565
Maire Tecnimont SpA*				324,100		2,540,281
						15,765,321
Japan	22.9	%
ABC-Mart, Inc.				309,300		5,856,840
Asics Corp.				96,200		4,515,770
Daiwa Securities Group, Inc.				986,400		7,467,396
Ebara Corp.*				31,900		2,883,812
Fuji Electric Co. Ltd.				193,600		12,916,898
Lawson, Inc.*				95,100		6,492,658
Organo Corp.				87,500		4,317,776
Ryohin Keikaku Co. Ltd.				285,700		4,663,527
Santen Pharmaceutical Co. Ltd.				866,000		8,503,825
Sumitomo Bakelite Co. Ltd.				164,600		4,936,478
Sundrug Co. Ltd.				170,000		5,264,632
Toyo Suisan Kaisha Ltd.				86,400		5,274,293
Yamazaki Baking Co. Ltd.*				277,500		7,147,394
						80,241,299
Netherlands	4.3	%
Arcadis NV*				120,900		7,402,174
Constellium SE*				348,239		7,699,564
						15,101,738
Norway	4.0	%
Kongsberg Gruppen ASA*				133,200		9,197,182
Subsea 7 SA*				303,000		4,846,560
						14,043,742
Spain	1.6	%
Indra Sistemas SA*				269,400		5,583,314
Sweden	3.2	%
AAK AB*				77,320		1,837,650
AddTech AB*				62,200		1,416,700
Saab AB*				91,300		8,120,105
						11,374,455
Switzerland	2.2	%
Accelleron Industries AG*				204,200		7,648,161
United Kingdom	21.9	%
Ashtead Technology Hldgs. PLC*				680,000		6,522,782
B&M European Value Retail SA				261,003		1,797,999
ConvaTec Group PLC*				1,331,000		4,811,289
Cranswick PLC				90,400		4,673,462
Diploma PLC				98,700		4,636,645
Domino's Pizza Group PLC*				89,951		391,230
Games Workshop Group PLC				40,550		5,138,483
Howden Joinery Group PLC*				309,705		3,544,623
IMI PLC*				235,116		5,386,035
Informa PLC*				512,700		5,378,723
Intermediate Capital Group PLC				434,400		11,261,613
Keywords Studios PLC*				156,833		2,577,263
Marks and Spencer Group PLC				1,971,300		6,595,881
Morgan Sindall Group PLC*				77,171		2,259,709
Telecom Plus PLC*				126,100		2,591,074
The Sage Group PLC				586,270		9,364,189
						76,931,000
Total Equities
(Cost: $275,955,084)					$	333,863,974
Short-Term Investments	4.9	%
Fidelity Investments Money Market Government Portfolio Class I  5.21%a				17,048,383		17,048,383
Total Short-Term Investments
(Cost: $17,048,383)					$	17,048,383
Total Investments	100.0	%
(Cost: $293,003,467)					$	350,912,357
Other Assets Less Liabilities	0.0	%				117,222
Net Assets - 100%					$	351,029,579

^a Annualized seven-day effective yield as of March 31, 2024

* Non-income producing security during the period ended March 31, 2024

SECTOR ALLOCATIONS (As a Percentage of Net Assets)
Communication Services	3.2	%
Consumer Discretionary	13.7	%
Consumer Staples	14.5	%
Energy	3.8	%
Financials	6.5	%
Healthcare	3.8	%
Industrials	35.8	%
Information Technology	7.0	%
Materials	6.1	%
Utilities	0.7	%

Oberweis Focused International Growth Fund

Schedule of Investments (unaudited)

March 31, 2024

			Shares		Value
Equities	97.6	%
Australia	1.9	%
BHP Group Ltd.				4,600	$	132,700
Canada	7.2	%
Dollarama, Inc.				3,500		266,621
WSP Global, Inc.				1,400		233,326
						499,947
Denmark	7.0	%
Danske Bank A/S				3,700		111,060
Novo Nordisk A/S				2,900		371,990
						483,050
France	10.4	%
LVMH Moet Hennessy Louis Vuitton SE*				340		305,813
Publicis Groupe SA*				2,800		305,254
Schneider Electric SE*				500		113,092
						724,159
Germany	8.1	%
Rheinmetall AG*				450		252,940
SAP SE*				1,600		311,507
						564,447
Italy	5.9	%
Ferrari NV*				240		104,607
UniCredit SpA*				8,000		303,593
						408,200
Japan	15.2	%
Bridgestone Corp.				1,800		79,560
Hitachi Ltd.				2,900		263,506
Mitsubishi UFJ Financial Group, Inc.				12,300		124,723
Sony Group Corp.				1,600		136,663
Sumitomo Corp.				6,100		146,274
Toyota Motor Corp.				12,100		304,219
						1,054,945
Netherlands	3.3	%
ASML Hldg. NV				240		231,015
Spain	2.4	%
Industria de Diseno Textil SA*				3,300		166,157
Sweden	6.1	%
EQT AB*				7,100		224,595
Volvo AB				7,300		197,845
						422,440
Switzerland	7.3	%
Novartis AG				800		77,499
Roche Hldg. AG				300		76,405
Zurich Insurance Group AG*				650		350,476
						504,380
United Kingdom	18.2	%
Anglo American PLC				3,200		78,831
AstraZeneca PLC				900		121,295
BAE Systems PLC*				10,500		178,843
BP PLC				20,200		126,381
CRH PLC				1,200		103,415
HSBC Hldgs. PLC				13,100		102,346
Rolls-Royce Hldgs. PLC*				47,000		253,123
Shell PLC				5,100		168,970
Unilever PLC				2,600		130,459
						1,263,663
United States of America	4.6	%
Cadence Design Systems, Inc.*				1,000		311,280
Total Equities
(Cost: $5,697,839)					$	6,766,383
Short-Term Investments	0.5	%
Fidelity Investments Money Market Government Portfolio Class I  5.21%a				36,141		36,141
Total Short-Term Investments
(Cost: $36,141)					$	36,141
Total Investments	98.1	%
(Cost: $5,733,980)					$	6,802,524
Other Assets Less Liabilities	1.9	%				135,164
Net Assets - 100%					$	6,937,688

^a Annualized seven-day effective yield as of March 31, 2024

* Non-income producing security during the period ended March 31, 2024

SECTOR ALLOCATIONS (As a Percentage of Net Assets)
Communication Services	4.4	%
Consumer Discretionary	19.7	%
Consumer Staples	1.9	%
Energy	4.3	%
Financials	17.5	%
Healthcare	9.3	%
Industrials	23.6	%
Information Technology	12.3	%
Materials	4.6	%

Fair Value Measurements

In accordance with Financial Accounting Standards Board (“FASB”) guidance, the Funds utilize the “Fair Value Measurements and Disclosures” to define fair value, set out a framework for measuring fair value, and expand disclosures regarding fair value measurements.

Various inputs are used in determining the value of the Fund’s investments. These inputs are summarized in the three levels listed below:

● Level 1 – Quoted prices in active markets for identical securities.

● Level 2 – Other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc).

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

The inputs or methodology used for valuing securities are not necessarily an indication of the risk associated with investing in those securities. The following is a summary of the inputs used to value the Funds’ net assets as of March 31, 2024:

	Micro-Cap Fund		Small-Cap Opportunities Fund
Level 1 – Equities	$	462,514,996	$	805,503,921
Level 2 - Equities		-		-
Level 3		-		-
Total Investments	$	462,514,996	$	805,503,921

	Global Opportunities Fund		China Opportunities Fund		Emerging Markets Fund
Level 1 - Equities
Total Asia	$	11,935,527	$	43,135,264	$	11,585,111
Total Africa		-		-		220,128
Total Australia		1,437,271		-		-
Total Europe		13,007,471		-		1,031,127
Total South America		487,056		-		2,304,673
Total North America		27,026,957		-		1,264,815
Total Short-Term Investments		-		-		1,760,728
Total Level 1		53,894,282		43,135,264		18,166,582
Level 2 - Equities		-		-		-
Level 3		-		-		-
Total Investments	$	53,894,282	$	43,135,264	$	18,166,582

	International Opportunities Fund		Focused International Growth Fund
Level 1 – Equites
Total Asia	$	80,241,299	$	1,054,945
Total Australia		24,684,916		132,700
Total Europe		193,493,088		4,767,511
Total North America		35,444,671		811,227
Total Short-Term Investments		17,048,383		36,141
Total Level 1		350,912,357		6,802,524
Level 2 – Equities		-		-
Level 3		-		-
Total Investments	$	350,912,357	$	6,802,524

The Funds’ assets include certain foreign securities for which a third party statistical pricing service may be employed for purposes of fair market valuation. The pricing service provides fair market valuation on days when the movement in relevant indices exceeds a predetermined threshold.