OBERWEIS ASSET MANAGEMENT INC/ Diversified Active

Location: Lisle, IL

CIK: 0000937886 · Show all filings

Period: Q1 2026 (← Previous) (Next →)

Filing Date: May 15, 2026

Total Value: $3.386B (100.0% shares, 0.0% debt)

Holdings (180)

AAOI Applied Optoelectronics Inc. 5.9%
Value $199M Shares 2,349,969 Est. Cost Unrealized
LITE Lumentum Hldgs, Inc. 5.5%
Value $187M Shares 266,222 Est. Cost Unrealized
CRDO Credo Technology Group 2.8%
Value $95.93M Shares 1,021,968 Est. Cost Unrealized
DOCN DigitalOcean Holdings, Inc. 2.3%
Value $79.56M Shares 927,505 Est. Cost Unrealized
SN SharkNinja, Inc. 1.9%
Value $63.54M Shares 599,970 Est. Cost Unrealized
NVMI Nova Ltd. 1.8%
Value $59.91M Shares 137,955 Est. Cost Unrealized
DAN Dana Inc. 1.6%
Value $54.23M Shares 1,611,500 Est. Cost Unrealized
BTSG BrightSpring Health Services 1.5%
Value $49.38M Shares 1,158,970 Est. Cost Unrealized
MTSI Macom Technology Solutions 1.4%
Value $47.94M Shares 215,886 Est. Cost Unrealized
RMBS Rambus, Inc 1.3%
Value $45.28M Shares 526,316 Est. Cost Unrealized
CLH Clean Harbors, Inc. 1.2%
Value $41.39M Shares 144,355 Est. Cost Unrealized
SITM SiTime Corporation 1.2%
Value $41.19M Shares 119,281 Est. Cost Unrealized
UCTT Ultra Clean Holdings 1.2%
Value $39.82M Shares 640,476 Est. Cost Unrealized
ECG Everus Construction Group 1.1%
Value $38.55M Shares 326,533 Est. Cost Unrealized
FTDR Frontdoor, Inc. 1.1%
Value $37.95M Shares 717,960 Est. Cost Unrealized
CRS Carpenter Technology Corp. 1.1%
Value $37.22M Shares 94,433 Est. Cost Unrealized
SKYW Skywest Inc 1.1%
Value $36.04M Shares 392,499 Est. Cost Unrealized
LSCC Lattice Semiconductor Corporat 1.0%
Value $34.73M Shares 374,436 Est. Cost Unrealized
GMED Globus Medical, Inc.-A 1.0%
Value $33.79M Shares 392,200 Est. Cost Unrealized
CAMT Camtek, Ltd. 1.0%
Value $33.78M Shares 222,780 Est. Cost Unrealized
ARQT Arcutis Biotherapeutics, Inc. 1.0%
Value $32.18M Shares 1,365,941 Est. Cost Unrealized
FLS Flowserve Corporation 0.9%
Value $31.95M Shares 434,681 Est. Cost Unrealized
SIMO Silicon Motion Techn ADR 0.9%
Value $31.73M Shares 282,550 Est. Cost Unrealized
LTH Life Time Holdings, Inc. 0.9%
Value $31.26M Shares 1,160,500 Est. Cost Unrealized
RSI Rush Street Interactive, Inc. 0.9%
Value $31.2M Shares 1,434,560 Est. Cost Unrealized
FCFS FirstCash Holdings, Inc 0.9%
Value $31.15M Shares 165,665 Est. Cost Unrealized
FSLY Fastly, Inc. 0.9%
Value $31.12M Shares 1,071,022 Est. Cost Unrealized
TPC Tutor Perini Corp. 0.9%
Value $30.41M Shares 393,900 Est. Cost Unrealized
BROS Dutch Bros., Inc. 0.9%
Value $30.32M Shares 598,493 Est. Cost Unrealized
SEI Solaris Energy Infrastructur 0.9%
Value $30.06M Shares 531,889 Est. Cost Unrealized
MMSI Merit Medical System Inc 0.9%
Value $29.24M Shares 424,209 Est. Cost Unrealized
FSS Federal Signal Corp. 0.9%
Value $28.94M Shares 267,634 Est. Cost Unrealized
AMSC American Superconductor 0.8%
Value $28.77M Shares 849,900 Est. Cost Unrealized
MRCY Mercury Systems, Inc. 0.8%
Value $28.51M Shares 391,023 Est. Cost Unrealized
ACA Arcosa, Inc. 0.8%
Value $28.41M Shares 267,700 Est. Cost Unrealized
OSIS Osi Systems, Inc. 0.8%
Value $28.3M Shares 106,593 Est. Cost Unrealized
CNR Core Natural Resources, Inc. 0.8%
Value $28.26M Shares 269,800 Est. Cost Unrealized
WAY Waystar Holding Corp. 0.8%
Value $28.15M Shares 1,167,474 Est. Cost Unrealized
EHC Encompass Health Corporation 0.8%
Value $28M Shares 289,485 Est. Cost Unrealized
VCYT Veracyte, Inc. 0.8%
Value $27.05M Shares 839,834 Est. Cost Unrealized
AIR AAR Corp. 0.8%
Value $26.83M Shares 245,125 Est. Cost Unrealized
ICUI ICU Medical, Inc. 0.8%
Value $26.31M Shares 203,710 Est. Cost Unrealized
LFUS Littelfuse, Inc. 0.7%
Value $24.37M Shares 71,800 Est. Cost Unrealized
PRIM Primoris Services Corp. 0.7%
Value $23.76M Shares 166,100 Est. Cost Unrealized
RELY Remitly Global, Inc. 0.7%
Value $22.79M Shares 1,454,300 Est. Cost Unrealized
G Genpact Ltd. 0.7%
Value $22.6M Shares 606,832 Est. Cost Unrealized
AIZ Assurant, Inc. 0.7%
Value $22.28M Shares 102,300 Est. Cost Unrealized
BLBD Blue Bird Corporation 0.7%
Value $22.1M Shares 389,238 Est. Cost Unrealized
IMAX Imax Corp. 0.6%
Value $21.94M Shares 577,139 Est. Cost Unrealized
LEVI Levi Strauss & Co. 0.6%
Value $21.58M Shares 1,167,300 Est. Cost Unrealized
ATEC Alphatec Hldgs Inc. 0.6%
Value $20.76M Shares 1,908,293 Est. Cost Unrealized
LASR nLIGHT Inc. 0.6%
Value $20.7M Shares 363,010 Est. Cost Unrealized
EYE National Vision Holdings, Inc. 0.6%
Value $20.66M Shares 797,780 Est. Cost Unrealized
ABCB Ameris Bancorp 0.6%
Value $20.55M Shares 263,500 Est. Cost Unrealized
LIVN LivaNova Plc 0.6%
Value $20.46M Shares 321,900 Est. Cost Unrealized
DRS Leonardo DRS, Inc. 0.6%
Value $20.01M Shares 449,500 Est. Cost Unrealized
URBN Urban Outfitters, Inc. 0.6%
Value $19.94M Shares 314,792 Est. Cost Unrealized
INDV Indivior Plc 0.6%
Value $19.92M Shares 653,413 Est. Cost Unrealized
LOPE Grand Canyon Education, Inc. 0.6%
Value $19.88M Shares 116,900 Est. Cost Unrealized
VISN Vistance Networks, Inc. 0.6%
Value $19.87M Shares 1,092,012 Est. Cost Unrealized
MTDR Matador Resources Company 0.6%
Value $19.76M Shares 312,700 Est. Cost Unrealized
VIAV Viavi Solutions, Inc. 0.6%
Value $19.74M Shares 593,200 Est. Cost Unrealized
CHYM Chime Financial Inc. 0.6%
Value $19.4M Shares 1,035,530 Est. Cost Unrealized
PEGA Pegasystems Inc. 0.6%
Value $19.38M Shares 455,290 Est. Cost Unrealized
CPRX Catalyst Pharmaceuticals, Inc. 0.6%
Value $19.33M Shares 780,570 Est. Cost Unrealized
QTWO Q2 Holdings, Inc. 0.6%
Value $18.67M Shares 394,629 Est. Cost Unrealized
POWL Powell Industries Inc. 0.5%
Value $18.48M Shares 34,157 Est. Cost Unrealized
IRTC Irhythm Holdings, Inc. 0.5%
Value $18.41M Shares 156,004 Est. Cost Unrealized
BOX Box, Inc. 0.5%
Value $18.24M Shares 771,520 Est. Cost Unrealized
AGX Argan, Inc 0.5%
Value $18.15M Shares 33,322 Est. Cost Unrealized
HNGE Hinge Health, Inc. 0.5%
Value $17.96M Shares 465,766 Est. Cost Unrealized
NYT New York Times Co. Cl A 0.5%
Value $17.72M Shares 211,650 Est. Cost Unrealized
AEO American Eagle Outfitters 0.5%
Value $17.45M Shares 1,044,900 Est. Cost Unrealized
ALHC Alighnment Healthcare, Inc. 0.5%
Value $17.03M Shares 966,600 Est. Cost Unrealized
ANIP ANI Pharmaceuticals, Inc. 0.5%
Value $17.02M Shares 221,386 Est. Cost Unrealized
NVST Envista Holdings Corp. 0.5%
Value $16.88M Shares 665,400 Est. Cost Unrealized
WGS Genedx Holdings Corp. 0.5%
Value $16.79M Shares 261,370 Est. Cost Unrealized
SPXC SPX Technologies, Inc. 0.5%
Value $16.68M Shares 83,441 Est. Cost Unrealized
SHAK Shake Shack, Inc. 0.5%
Value $16.59M Shares 187,570 Est. Cost Unrealized
CALX Calix, Inc. 0.5%
Value $16.41M Shares 335,030 Est. Cost Unrealized
SGHC Super Group SGHC Ltd. 0.5%
Value $16.36M Shares 1,514,400 Est. Cost Unrealized
EZPW EZCorp, Inc. 0.5%
Value $16.23M Shares 639,400 Est. Cost Unrealized
LMAT LeMaitre Vascular, Inc. 0.5%
Value $16.22M Shares 148,601 Est. Cost Unrealized
AEIS Advanced Energy Industry, Inc. 0.5%
Value $15.87M Shares 49,183 Est. Cost Unrealized
ZWS Zurn Elkay Water Solutions Cor 0.5%
Value $15.79M Shares 352,183 Est. Cost Unrealized
FN Fabrinet 0.5%
Value $15.78M Shares 30,263 Est. Cost Unrealized
KNSA Kiniksa Pharmaceuticals, Ltd. 0.5%
Value $15.34M Shares 318,634 Est. Cost Unrealized
PAHC Phibro Animal Health Corp 0.5%
Value $15.33M Shares 277,100 Est. Cost Unrealized
DIOD Diodes, Inc. 0.5%
Value $15.31M Shares 224,300 Est. Cost Unrealized
AMBA Ambarella, Inc. 0.4%
Value $15.19M Shares 295,185 Est. Cost Unrealized
MD Pediatrix Medical Group, Inc. 0.4%
Value $15M Shares 701,087 Est. Cost Unrealized
MGY Magnolia Oil & Gas Corp. 0.4%
Value $14.35M Shares 454,466 Est. Cost Unrealized
SKWD Skyward Specialty Ins Group 0.4%
Value $14.29M Shares 327,100 Est. Cost Unrealized
HALO Halozyme Therapeutics, Inc. 0.4%
Value $14.21M Shares 219,930 Est. Cost Unrealized
LQDA Liquidia Corp. 0.4%
Value $14.04M Shares 372,100 Est. Cost Unrealized
ARLO Arlo Technologies, Inc. 0.4%
Value $13.98M Shares 982,300 Est. Cost Unrealized
HQY HealthEquity Inc. 0.4%
Value $13.93M Shares 166,641 Est. Cost Unrealized
PUMP ProPetro Holding Corp. 0.4%
Value $13.91M Shares 965,500 Est. Cost Unrealized
ZETA Zeta Global Holdings Corp. 0.4%
Value $13.87M Shares 871,060 Est. Cost Unrealized
MIR Mirion Technologies, Inc. 0.4%
Value $13.84M Shares 744,267 Est. Cost Unrealized
MOG/A Moog Inc. - A 0.4%
Value $13.14M Shares 44,910 Est. Cost Unrealized
IDCC Interdigital, Inc. 0.4%
Value $12.88M Shares 42,645 Est. Cost Unrealized
DCO Ducommun Inc. 0.4%
Value $12.19M Shares 99,900 Est. Cost Unrealized
PI Impinj, Inc. 0.4%
Value $12.13M Shares 118,086 Est. Cost Unrealized
ATEN A10 Networks, Inc. 0.3%
Value $11.66M Shares 504,300 Est. Cost Unrealized
DAVE Dave, Inc. 0.3%
Value $11.61M Shares 66,702 Est. Cost Unrealized
SBCF Seacoast Bkg Corp. 0.3%
Value $11.48M Shares 378,866 Est. Cost Unrealized
AXGN AxoGen Inc. 0.3%
Value $11.34M Shares 342,394 Est. Cost Unrealized
BHE Benchmark Electronics Inc 0.3%
Value $11.32M Shares 201,900 Est. Cost Unrealized
ADPT Adaptive Biotechnologies 0.3%
Value $11.2M Shares 806,951 Est. Cost Unrealized
OSW OneSpaWorld Holdings Limited 0.3%
Value $11.15M Shares 485,690 Est. Cost Unrealized
NIC Nicolet Bankshares, Inc. 0.3%
Value $11.12M Shares 74,800 Est. Cost Unrealized
PDS Precision Drilling Corp. 0.3%
Value $11.08M Shares 112,600 Est. Cost Unrealized
TILE Interface, Inc. 0.3%
Value $11.06M Shares 443,900 Est. Cost Unrealized
ETON Eton Pharmaceuticals, Inc. 0.3%
Value $10.84M Shares 439,300 Est. Cost Unrealized
QLYS Qualys, Inc. 0.3%
Value $10.45M Shares 118,900 Est. Cost Unrealized
PLUS EPlus, Inc. 0.3%
Value $10.35M Shares 137,498 Est. Cost Unrealized
EVLV Evolv Technologies Holdings 0.3%
Value $10.12M Shares 1,671,949 Est. Cost Unrealized
BOOT Boot Barn Hldgs, Inc. 0.3%
Value $9.982M Shares 68,200 Est. Cost Unrealized
AMPX Amprius Technologies, Inc. 0.3%
Value $9.863M Shares 585,000 Est. Cost Unrealized
MHO M/I Homes, Inc. 0.3%
Value $9.355M Shares 76,400 Est. Cost Unrealized
FBK FB Financial Corp. 0.2%
Value $8.419M Shares 162,100 Est. Cost Unrealized
ADUS Addus Homecare Corp. 0.2%
Value $8.372M Shares 89,396 Est. Cost Unrealized
CRMD CorMedix, Inc. 0.2%
Value $8.223M Shares 1,211,115 Est. Cost Unrealized
AORT Artivion, Inc 0.2%
Value $8.097M Shares 221,122 Est. Cost Unrealized
CECO CECO Environmental Corp. 0.2%
Value $8.045M Shares 135,032 Est. Cost Unrealized
XPRO Expro Group Holdings N.V. 0.2%
Value $7.915M Shares 454,600 Est. Cost Unrealized
THR Thermon Group Hldgs Inc. 0.2%
Value $7.797M Shares 154,700 Est. Cost Unrealized
MGNI Magnite, Inc. 0.2%
Value $7.693M Shares 647,600 Est. Cost Unrealized
LINC Lincoln EDL Svcs 0.2%
Value $7.666M Shares 188,447 Est. Cost Unrealized
RDWR Radware, Ltd. 0.2%
Value $7.546M Shares 286,700 Est. Cost Unrealized
NPKI NPK International, Inc. 0.2%
Value $7.508M Shares 518,150 Est. Cost Unrealized
COCO The Vita Coco Co., Inc. 0.2%
Value $7.479M Shares 156,108 Est. Cost Unrealized
APEI American Public Education, Inc 0.2%
Value $7.417M Shares 130,400 Est. Cost Unrealized
BW Babcock & Wilcox Enterprises, 0.2%
Value $7.348M Shares 500,200 Est. Cost Unrealized
LIND Lindblad Expeditions Holdings, 0.2%
Value $6.552M Shares 378,721 Est. Cost Unrealized
VSEC VSE Corp. 0.2%
Value $6.271M Shares 34,008 Est. Cost Unrealized
KN Knowles Corp. 0.2%
Value $6.014M Shares 234,200 Est. Cost Unrealized
SRCE 1st Source Corp. 0.2%
Value $5.966M Shares 86,200 Est. Cost Unrealized
CRAI CRA Int'l Inc. 0.2%
Value $5.904M Shares 36,470 Est. Cost Unrealized
GRC The Gorman-Rupp Co. 0.2%
Value $5.902M Shares 95,000 Est. Cost Unrealized
BVS Bioventus, Inc. 0.2%
Value $5.735M Shares 628,114 Est. Cost Unrealized
CNXN PC Connection, Inc. 0.2%
Value $5.624M Shares 96,200 Est. Cost Unrealized
HURN Huron Consulting Group, Inc. 0.2%
Value $5.393M Shares 42,300 Est. Cost Unrealized
TCMD Tactile Sys Technology, Inc. 0.2%
Value $5.3M Shares 202,839 Est. Cost Unrealized
COUR Coursera, Inc. 0.1%
Value $4.783M Shares 821,800 Est. Cost Unrealized
BRCB Black Rock Coffee Bar, Inc. 0.1%
Value $4.724M Shares 365,600 Est. Cost Unrealized
RCKY Rocky Brands, Inc. 0.1%
Value $4.569M Shares 118,000 Est. Cost Unrealized
CLMB Climb Global Solutions, Inc. 0.1%
Value $4.199M Shares 211,840 Est. Cost Unrealized
RDVT Red Violet, Inc. 0.1%
Value $3.623M Shares 104,700 Est. Cost Unrealized
SPY SPDR S&P 500 ETF Trust 0.0%
Value $1.544M Shares 2,374 Est. Cost Unrealized
HTHT H World Group Ltd. 0.0%
Value $1.207M Shares 24,000 Est. Cost Unrealized
MSFT Microsoft Corp. 0.0%
Value $987K Shares 2,665 Est. Cost Unrealized
JPM JP Morgan Chase & Company Inc. 0.0%
Value $936K Shares 3,184 Est. Cost Unrealized
AAPL Apple, Inc. 0.0%
Value $896K Shares 3,531 Est. Cost Unrealized
FUTU Futu Holdings Ltd. 0.0%
Value $615K Shares 4,500 Est. Cost Unrealized
JNJ Johnson & Johnson 0.0%
Value $561K Shares 2,294 Est. Cost Unrealized
Alphabet, Inc. Cl A 0.0%
Value $546K Shares 1,900 Est. Cost Unrealized
ACMR ACM Research, Inc. Class A 0.0%
Value $512K Shares 13,000 Est. Cost Unrealized
Alphabet, Inc. Cl C 0.0%
Value $465K Shares 1,620 Est. Cost Unrealized
FRSH Freshworks, Inc. 0.0%
Value $464K Shares 57,750 Est. Cost Unrealized
TRV The Travelers Co., Inc. 0.0%
Value $461K Shares 1,582 Est. Cost Unrealized
AMGN Amgen, Inc. 0.0%
Value $364K Shares 1,036 Est. Cost Unrealized
WEAV Weave Communications, Inc. 0.0%
Value $336K Shares 72,830 Est. Cost Unrealized
MA Mastercard, Inc. 0.0%
Value $331K Shares 662 Est. Cost Unrealized
RMD Resmed Inc. 0.0%
Value $325K Shares 1,450 Est. Cost Unrealized
NEM Newmont Mining 0.0%
Value $311K Shares 2,875 Est. Cost Unrealized
BK Bank of New York Mellon Corp. 0.0%
Value $298K Shares 2,510 Est. Cost Unrealized
GLD SPDR Gold Shares ETF 0.0%
Value $290K Shares 675 Est. Cost Unrealized
CAT Caterpillar, Inc. 0.0%
Value $289K Shares 408 Est. Cost Unrealized
IBEX Ltd. 0.0%
Value $274K Shares 10,200 Est. Cost Unrealized
WMT Wal Mart Stores Inc. 0.0%
Value $266K Shares 2,137 Est. Cost Unrealized
MCD McDonald's Corporation 0.0%
Value $266K Shares 855 Est. Cost Unrealized
Wells Fargo Co New Perp Pfd 0.0%
Value $260K Shares 225 Est. Cost Unrealized
MU Micron Technology 0.0%
Value $236K Shares 700 Est. Cost Unrealized
XOM Exxon Mobil Corp. 0.0%
Value $221K Shares 1,303 Est. Cost Unrealized
AFL Aflac Inc. 0.0%
Value $219K Shares 2,000 Est. Cost Unrealized
FCX Freeport Mcmoran Copper & Gold 0.0%
Value $211K Shares 3,590 Est. Cost Unrealized
MRK Merck & Co. 0.0%
Value $208K Shares 1,730 Est. Cost Unrealized
Xenacare Hldgs, Inc. 0.0%
Value $0 Shares 140,000 Est. Cost Unrealized