OBERWEIS ASSET MANAGEMENT INC/

CIK
937886
City
LISLE
State / Country
IL

Top Portfolio Positions

174 positions · $3,370,979,481 total · as of Mar 31, 2026
Ticker Company Shares Value (USD) % of Portfolio
AAOI
Applied Optoelectronics, Inc.
Technology
2,349,969 $198,783,877 5.90%
LITE
Lumentum Holdings Inc.
Technology
266,222 $187,090,172 5.55%
CRDO
Credo Technology Group Holding Ltd
Technology
1,021,968 $95,932,136 2.85%
DOCN
DigitalOcean Holdings, Inc.
Technology
927,505 $79,561,378 2.36%
SN
SharkNinja, Inc.
Consumer Cyclical
599,970 $63,536,823 1.88%
NVMI
Nova Ltd.
Technology
137,955 $59,911,097 1.78%
DAN
DANA Inc
Consumer Cyclical
1,611,500 $54,226,975 1.61%
BTSG
BrightSpring Health Services, Inc.
Healthcare
1,158,970 $49,383,711 1.46%
MTSI
MACOM Technology Solutions Holdings, Inc.
Technology
215,886 $47,941,804 1.42%
RMBS
Rambus Inc
Technology
526,316 $45,278,965 1.34%

Portfolio Trend

25 quarters · across all stocks

Holdings in BLBD

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Shares Held

Position Value (USD)

13 of 13 shown
Report Date Value (USD) Shares
2026-03-31 $22,104,826 389,238
2025-12-31 $17,983,986 382,638
2025-09-30 $21,489,170 373,400
2025-06-30 $16,115,944 373,400
2025-03-31 $11,617,593 358,900
2024-12-31 $13,864,307 358,900
2024-09-30 $14,344,836 299,100
2024-06-30 $16,106,535 299,100
2024-03-31 $11,467,494 299,100
2023-12-31 $7,729,432 286,700
2023-09-30 $6,543,775 306,500
2023-06-30 $6,773,224 301,300
2023-03-31 $2,600,739 127,300