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  Name: OBERWEIS ASSET MANAGEMENT INC/
  City: NORTH AURORA
  State: IL
  Zip: 60542
   
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Portfolio Summary View Filing
  Filing Report Date : 2023-12-31
  Total Value : $1,073,587,000
  Total Value Change : $132,121,000
  Securities Held Change : -3
   
All Securities Held : 192
  New Positions : 43
  Closed Positions : 46
  Increased Positions : 106
  Unchanged Positions : 8
  Decreased Positions : 35

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Holdings Found : 100     View All Holdings Currently Viewing:  ALL     Page 1 of 1
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Ticker Company Name Position
Rank
New/Closed
Postion
Last
Close
    Value Shares Held
% of
Portfolio
Value
Change
Change In
Shares Held
   % of Company    Industry
   (CSTM)1 Year Chart         CSTM Constellium N.V 1 - $21.73 $36,933,000 1,850,371 3.44% -16,449,000 -1,082,700 1.342    N/A
   (ACLS)1 Year Chart         ACLS Axcelis Technologies Inc 2 - $112.47 $31,817,000 245,329 2.96% 257,000 51,770 0.732    Semiconductor Equipme...
   (AEHR)1 Year Chart         AEHR Aehr Test Systems 3 - $12.46 $28,950,000 1,091,202 2.7% -12,642,000 181,094 4.681    Semiconductor Equipme...
   (ATEC)1 Year Chart         ATEC Alphatec Holdings, Inc. 4 - $13.80 $24,294,000 1,607,820 2.26% 8,263,000 371,780 1.619    Medical Instruments &...
   (WFTLF)1 Year Chart         WFTLF Weatherford International Plc 5 - $116.49 $23,485,000 240,060 2.19% 5,697,000 43,140 0.343    Oil & Gas Equipment &...
   (AMPH)1 Year Chart         AMPH Amphastar Pharmaceuticals, ... 6 - $43.52 $21,045,000 340,265 1.96% 14,032,000 187,765 0.716    N/A
   (VCYT)1 Year Chart         VCYT Veracyte, Inc. 7 - $21.72 $18,069,000 656,810 1.68% 4,726,000 59,270 0.793    Biotechnology
   (AAOI)1 Year Chart         AAOI Applied Optoelectronics, Inc. 8 - $13.96 $17,232,000 891,915 1.61% 12,093,000 423,500 3.881    N/A
   (TMDX)1 Year Chart         TMDX Transmedics Group, Inc. 9 - $74.12 $16,804,000 212,900 1.57% 8,531,000 61,800 0.667    N/A
   (PERI)1 Year Chart         PERI Perion Network Ltd 10 - $22.36 $14,086,000 456,290 1.31% -319,000 -14,000 1.612    Search Engines & Info...
   (OLED)1 Year Chart         OLED Universal Display Corp 11 - $167.75 $12,727,000 66,542 1.19% 2,991,000 4,527 0.141    Computer Peripherals
   (ADMA)1 Year Chart         ADMA ADMA Biologics Inc 12 - $6.74 $12,252,000 2,710,700 1.14% 4,811,000 632,300 1.384    Biotechnology
   (CAMT)1 Year Chart         CAMT Camtek Ltd 13 - $87.05 $12,105,000 174,480 1.13% 1,746,000 8,100 0.445    Scientific & Technica...
   (VRT)1 Year Chart         VRT Vertiv Holdings Co 14 - $81.01 $11,223,000 233,672 1.05% -2,950,000 -147,318 0.062    N/A
   (AXNX)1 Year Chart         AXNX Axonics Modulation Technolo... 15 - $68.90 $11,106,000 178,470 1.03% 2,036,000 16,850 0.338    N/A
   (OSK)1 Year Chart         OSK Oshkosh Corp 16 - $123.55 $10,722,000 98,899 1% 5,556,000 44,763 0.145    Trucks & Other Vehicles
   (FLS)1 Year Chart         FLS Flowserve Corp 17 - $45.73 $10,110,000 245,271 0.94% 1,725,000 34,431 0.188    Diversified Machinery
   (CLH)1 Year Chart         CLH Clean Harbors Inc 18 - $200.57 $9,957,000 57,055 0.93% 2,356,000 11,640 0.103    Waste Management
   (HLS)1 Year Chart         HLS Encompass Health Corp 19 - $77.71 $9,691,000 145,245 0.9% 2,196,000 33,645 0.148    Hospitals
   (FTDR)1 Year Chart         FTDR Frontdoor Inc 20 - $32.31 $9,548,000 271,100 0.89% 4,510,000 106,400 0.29    N/A
   (HAE)1 Year Chart         HAE Haemonetics Corp 21 - $84.09 $9,054,000 105,880 0.84% 2,121,000 28,480 0.206    Medical Instruments &...
   (ICFI)1 Year Chart         ICFI Icf International, Inc. 22 - $148.93 $8,863,000 66,100 0.83% -2,699,000 -29,600 0.35    Management Services
   (AVAV)1 Year Chart         AVAV Aerovironment Inc 23 - $149.28 $8,798,000 69,800 0.82% 1,091,000 700 0.29    Aerospace/Defense Pro...
   (CECE)1 Year Chart         CECE Ceco Environmental Corp 24 - $22.99 $8,653,000 426,700 0.81% 1,998,000 10,000 1.198    Industrial Electrical...
   (UCTT)1 Year Chart         UCTT Ultra Clean Holdings Inc 25 - $46.26 $8,436,000 247,100 0.79% 1,965,000 29,000 0.564    Semiconductor - Speci...
   (PSN)1 Year Chart         PSN Parsons Corp 26 - $82.68 $8,340,000 133,000 0.78% 1,204,000 1,700 0.121    N/A
   (BELFB)1 Year Chart         BELFB Bel Fuse, Inc. 27 - $59.41 $8,300,000 124,300 0.77% 2,502,000 2,800 1.217    Diversified Electronics
   (ZETA)1 Year Chart         ZETA Zeta Global Holdings Corp. 28 - $10.93 $8,251,000 935,480 0.77% 2,617,000 260,780 0.609    N/A
   (MMSI)1 Year Chart         MMSI Merit Medical Systems Inc 29 - $75.46 $8,135,000 107,090 0.76% 1,533,000 11,430 0.193    Medical Instruments &...
   (POWI)1 Year Chart         POWI Power Integrations Inc 30 - $70.61 $8,063,000 98,195 0.75% 846,000 3,622 0.164    Semiconductor - Integ...
   (DECK)1 Year Chart         DECK Deckers Outdoor Corp 31 - $937.90 $8,051,000 12,045 0.75% -5,161,000 -13,655 0.043    Textile - Apparel Foo...
   (FCFS)1 Year Chart         FCFS First Cash Financial Servic... 32 - $126.21 $8,043,000 74,200 0.75% 1,850,000 12,500 0.153    Specialty Retail, Other
   (ALGM)1 Year Chart         ALGM Allegro Microsystems, Inc. 33 - $26.80 $7,809,000 257,980 0.73% 593,000 32,050 0.136    N/A
   (PLAB)1 Year Chart         PLAB Photronics Inc 34 - $28.77 $7,764,000 247,500 0.72% 3,114,000 17,400 0.377    Semiconductor Equipme...
   (NVTS)1 Year Chart         NVTS Navitas Semiconductor Corp 35 - $4.58 $7,746,000 959,900 0.72% 1,404,000 47,400 0.815    N/A
   (STRL)1 Year Chart         STRL Sterling Construction Co Inc 36 - $113.43 $7,738,000 88,000 0.72% -345,000 -22,000 0.313    Residential Construct...
   (BLBD)1 Year Chart         BLBD Blue Bird Corp 37 - $37.85 $7,729,000 286,700 0.72% 1,185,000 -19,800 0.896    N/A
   (ACMR)1 Year Chart         ACMR Acm Research Inc 38 - $28.70 $7,687,000 393,400 0.72% 1,499,000 51,600 0.728    N/A
   (FSS)1 Year Chart         FSS Federal Signal Corp 39 - $84.54 $7,584,000 98,830 0.71% 2,125,000 7,430 0.163    Trucks & Other Vehicles
   (VECO)1 Year Chart         VECO Veeco Instruments Inc 40 - $34.86 $7,447,000 240,000 0.69% 1,072,000 13,200 0.41    Semiconductor Equipme...
   (SPXC)1 Year Chart         SPXC SPX Technologies, Inc 41 - $121.42 $7,374,000 73,000 0.69% 1,839,000 5,000 0.161    Auto Parts
   (EVH)1 Year Chart         EVH Evolent Health, Inc. 42 - $32.73 $7,086,000 214,540 0.66% 130,000 -40,920 0.184    N/A
   (WWD)1 Year Chart         WWD Woodward Inc 43 - $155.28 $7,079,000 52,000 0.66% 1,015,000 3,200 0.083    Industrial Electrical...
   (ITGR)1 Year Chart         ITGR Integer Holdings Corporation 44 New $115.06 $7,035,000 71,000 0.66% 7,035,000 71,000 0.186    Industrial Electrical...
   (ACHC)1 Year Chart         ACHC Acadia Healthcare Company Inc 45 - $78.34 $7,014,000 90,200 0.65% 1,544,000 12,400 0.091    N/A
   (WEAV)1 Year Chart         WEAV Weave Communications, Inc. 46 - $0.00 $6,990,000 609,400 0.65% 2,723,000 85,800 0.949    N/A
   (SKYW)1 Year Chart         SKYW SkyWest Inc 47 New $69.48 $6,979,000 133,700 0.65% 6,979,000 133,700 0.267    Regional Airlines
   (PRIM)1 Year Chart         PRIM Primoris Services Corp 48 - $42.00 $6,971,000 209,900 0.65% 1,125,000 31,300 0.394    General Contractors
   (IPAR)1 Year Chart         IPAR Inter Parfums Inc 49 - $139.22 $6,970,000 48,400 0.65% 1,381,000 6,800 0.153    Personal Products
   (JBI)1 Year Chart         JBI Janus International Group 50 - $15.29 $6,896,000 528,400 0.64% 2,845,000 149,800 0.387    N/A
   (ESAB)1 Year Chart         ESAB Esab Corp 51 New $110.10 $6,852,000 79,100 0.64% 6,852,000 79,100 0.132    N/A
   (ONTO)1 Year Chart         ONTO Onto Innovation Inc 52 - $180.49 $6,819,000 44,600 0.64% 1,578,000 3,500 0.091    Scientific & Technica...
   (MHO)1 Year Chart         MHO M I Schottenstein Homes Inc 53 - $130.30 $6,722,000 48,800 0.63% 2,999,000 4,500 0.17    Residential Construct...
   (GIII)1 Year Chart         GIII G III Apparel Group Ltd 54 - $28.80 $6,680,000 196,600 0.62% 3,092,000 52,600 0.406    Textile - Apparel Foo...
   (FORM)1 Year Chart         FORM Formfactor Inc 55 - $44.85 $6,640,000 159,200 0.62% 68,000 -28,900 0.206    Semiconductor- Broad...
   (PFBC)1 Year Chart         PFBC Preferred Bank of L.A. 56 - $76.42 $6,545,000 89,600 0.61% 1,403,000 7,000 0.601    Domestic Regional Banks
   (HNI)1 Year Chart         HNI HNI Corp 57 - $45.11 $6,475,000 154,800 0.6% 598,000 -14,900 0.362    Business Equipment
   (NEO)1 Year Chart         NEO NeoGenomics Inc 58 - $15.20 $6,354,000 392,700 0.59% 2,745,000 99,300 0.319    N/A
   (MGPI)1 Year Chart         MGPI MGP Ingredients Inc 59 - $85.80 $6,350,000 64,450 0.59% 691,000 10,800 0.293    Processed & Packaged ...
   (FN)1 Year Chart         FN Fabrinet 60 - $191.37 $6,319,000 33,200 0.59% 2,620,000 11,000 0.09    Electronic Equipment
   (YOU)1 Year Chart         YOU Clear Secure, Inc. 61 New $21.15 $6,267,000 303,500 0.58% 6,267,000 303,500 0.301    N/A
   (RES)1 Year Chart         RES RPC Inc 62 - $7.69 $6,247,000 858,128 0.58% -88,000 149,552 0.399    Oil & Gas Equipment &...
   (THR)1 Year Chart         THR Thermon Group Holdings, Inc. 63 New $31.87 $6,211,000 190,700 0.58% 6,211,000 190,700 0.574    Diversified Machinery
   (PLYA)1 Year Chart         PLYA Playa Hotels & Resorts N.v. 64 - $9.75 $6,068,000 701,500 0.57% 989,000 0 0.476    N/A
   (SIBN)1 Year Chart         SIBN Si-Bone, Inc. 65 - $0.00 $6,026,000 287,100 0.56% -667,000 -28,000 0.837    N/A
   (PETQ)1 Year Chart         PETQ Petiq, Inc. 66 - $17.44 $6,012,000 304,400 0.56% 1,686,000 84,800 0.977    N/A
   (UPWK)1 Year Chart         UPWK Upwork Inc 67 - $12.28 $5,902,000 396,900 0.55% 4,273,000 253,500 0.33    N/A
   (CPRX)1 Year Chart         CPRX Catalyst Pharmaceutical Par... 68 - $16.27 $5,860,000 348,600 0.55% 2,428,000 55,000 0.336    Drugs - Generic
   (DVAX)1 Year Chart         DVAX Dynavax Technologies Corp 69 - $12.41 $5,835,000 417,400 0.54% 146,000 32,200 0.31    Drug Manufacturers - ...
   (KWR)1 Year Chart         KWR Quaker Chemical Corp 70 - $207.47 $5,762,000 27,000 0.54% 1,682,000 1,500 0.151    Specialty Chemicals
   (EZPW)1 Year Chart         EZPW Ezcorp Inc 71 - $11.10 $5,729,000 655,500 0.53% 818,000 60,200 1.021    Specialty Retail, Other
   (VC)1 Year Chart         VC Visteon Corp 72 - $117.14 $5,467,000 43,770 0.51% -2,537,000 -14,200 0.145    Auto Parts
   (SMCI)1 Year Chart         SMCI Super Micro Computer Inc 73 - $1,023.29 $5,429,000 19,100 0.51% 1,124,000 3,400 0.037    Networking & Communic...
   (BJRI)1 Year Chart         BJRI BJs Restaurants Inc 74 - $35.74 $5,351,000 148,600 0.5% 2,719,000 36,400 0.635    Restaurants
   (ACXM)1 Year Chart         ACXM LiveRamp Holdings Inc 75 New $33.66 $5,265,000 139,000 0.49% 5,265,000 139,000 0.179    Information Technolog...
   (HEES)1 Year Chart         HEES H&E Equipment Services, Inc. 76 - $64.62 $5,174,000 98,900 0.48% 1,192,000 6,700 0.274    Industrial Equipment ...
   (AIZ)1 Year Chart         AIZ Assurant Inc 77 New $187.41 $5,173,000 30,700 0.48% 5,173,000 30,700 0.051    Life & Health Insurance
   (INFA)1 Year Chart         INFA Informatica Inc. 78 New $35.51 $5,170,000 182,100 0.48% 5,170,000 182,100 0.078    N/A
   (MOD)1 Year Chart         MOD Modine Manufacturing Co 79 - $95.25 $5,164,000 86,500 0.48% 1,294,000 1,900 0.169    Auto Parts
   (ATGE)1 Year Chart         ATGE Adtalem Global Education Inc 80 New $51.80 $5,099,000 86,500 0.47% 5,099,000 86,500 0.166    Education & Training ...
   (ROVR)1 Year Chart         ROVR Rover Group Ord Shs Class A 81 - $10.99 $5,072,000 466,200 0.47% 2,518,000 58,200 0.266    N/A
   (MMS)1 Year Chart         MMS Maximus Inc 82 - $83.49 $5,065,000 60,400 0.47% 943,000 5,200 0.094    Education & Training ...
   (JELD)1 Year Chart         JELD Jeld-Wen Holding, Inc. 83 - $20.58 $4,913,000 260,200 0.46% 1,608,000 12,800 1.441    N/A
   (TAST)1 Year Chart         TAST Carrols Restaurant Group, Inc. 84 New $9.50 $4,913,000 623,500 0.46% 4,913,000 623,500 0    Restaurants
   (HURN)1 Year Chart         HURN Huron Consulting Group Inc 85 - $96.32 $4,883,000 47,500 0.45% -940,000 -8,400 0.208    Management Services
   (ANF)1 Year Chart         ANF Abercrombie & Fitch Co 86 - $121.36 $4,852,000 55,000 0.45% 709,000 -18,500 0.088    Apparel Stores
   (NXT)1 Year Chart         NXT Nextracker Inc. 87 - $58.02 $4,835,000 103,200 0.45% 927,000 5,900 0.204    N/A
   (MSA)1 Year Chart         MSA MSA Safety Incorporated 88 New $193.21 $4,744,000 28,100 0.44% 4,744,000 28,100 0.072    Medical Appliances & ...
   (SNCY)1 Year Chart         SNCY Sun Country Airlines Holdin... 89 - $0.00 $4,683,000 297,700 0.44% 483,000 14,700 0.505    N/A
   (SIMO)1 Year Chart         SIMO Silicon Motion Technology Corp 90 New $76.30 $4,681,000 76,400 0.44% 4,681,000 76,400 0.217    Diversified Electronics
   (VVX)1 Year Chart         VVX V2X, Inc 91 - $46.37 $4,677,000 100,700 0.44% -1,135,000 -11,800 0.33    N/A
   (CROX)1 Year Chart         CROX Crocs Inc 92 - $143.02 $4,671,000 50,000 0.44% -2,275,000 -28,730 0.074    Textile - Apparel Foo...
   (ATI)1 Year Chart         ATI Allegheny Technologies Inc 93 - $50.92 $4,661,000 102,500 0.43% 752,000 7,500 0.073    Steel & Iron
   (CRY)1 Year Chart         CRY Cryolife Inc 94 - $21.63 $4,613,000 258,000 0.43% 850,000 9,800 0.681    Specialized Health Se...
   (PRLB)1 Year Chart         PRLB Proto Labs Inc 95 New $35.38 $4,574,000 117,400 0.43% 4,574,000 117,400 0.409    Machine Tools & Acces...
   (OSIS)1 Year Chart         OSIS OSI Systems Inc 96 - $141.44 $4,555,000 35,300 0.42% 1,557,000 9,900 0.197    Semiconductor Equipme...
   (LPI)1 Year Chart         LPI Laredo Petroleum Inc 97 New $0.95 $4,535,000 99,700 0.42% 4,535,000 99,700 0.584    Independent Oil & Gas
   (LMB)1 Year Chart         LMB Limbach Holdings Inc 98 New $41.61 $4,524,000 99,494 0.42% 4,524,000 99,494 1.335    N/A
   (FSLY)1 Year Chart         FSLY Fastly, Inc. 99 - $12.63 $4,446,000 249,800 0.41% 1,181,000 79,500 0.244    N/A
   (ACIW)1 Year Chart         ACIW ACI Worldwide Inc 100 New $32.54 $4,414,000 144,262 0.41% 4,414,000 144,262 0.124    Technical & System So...

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