OBERWEIS ASSET MANAGEMENT INC/ 13F Holdings

CIK 0000937886 · Lisle, IL

As of Sep 30, 2025, OBERWEIS ASSET MANAGEMENT INC/ reported 183 positions worth $2.6B in its SEC Form 13F filing.

Top 25 holdings

SecurityTickerSectorSharesValue% of portfolio
CREDO TECHNOLOGY GROUP HOLDING LTDCRDOTechnology643,948$93.8M3.59%
LUMENTUM HOLDINGS INCLITETechnology328,630$53.5M2.05%
RAMBUS INCRMBSTechnology507,899$52.9M2.03%
AMBARELLA INCAMBATechnology611,360$50.4M1.93%
SHARKNINJA INCSNConsumer Cyclical482,810$49.8M1.91%
APPLIED OPTOELECTRONICS INCAAOITechnology1,888,041$49.0M1.87%
ENCOMPASS HEALTH CORPEHCHealthcare358,800$45.6M1.75%
FRONTDOOR INCFTDRConsumer Cyclical610,860$41.1M1.57%
ADMA BIOLOGICS INCADMAHealthcare2,712,040$39.8M1.52%
AMERICAN SUPERCONDUCTOR CORPAMSCIndustrials665,700$39.5M1.51%
SPORTRADAR GROUP AGSRADTechnology1,379,100$37.1M1.42%
NOVA LTDNVMITechnology113,285$36.2M1.39%
ITRON INCITRITechnology284,150$35.4M1.36%
SKYWEST INCSKYWIndustrials330,790$33.3M1.27%
SITIME CORPSITMTechnology106,396$32.1M1.23%
WAYSTAR HOLDING CORPWAYHealthcare836,550$31.7M1.21%
MERCURY SYSTEMS INCMRCYIndustrials398,500$30.8M1.18%
CLEAN HARBORS INCCLHIndustrials116,770$27.1M1.04%
STRIDE INCLRNConsumer Defensive181,800$27.1M1.04%
BRIGHTSPRING HEALTH SERVICES INCBTSGHealthcare908,000$26.8M1.03%
PRIMORIS SERVICES CORPPRIMIndustrials192,400$26.4M1.01%
DIGITALOCEAN HOLDINGS INCDOCNTechnology772,000$26.4M1.01%
OSI SYSTEMS INCOSISTechnology101,400$25.3M0.97%
TUTOR PERINI CORPTPCIndustrials377,800$24.8M0.95%
VERACYTE INCVCYTHealthcare721,690$24.8M0.95%