OBERWEIS ASSET MANAGEMENT INC/
Top Portfolio Positions
176 positions ·
$3,371,799,409 total
· as of Mar 31, 2026
| Ticker | Company | Shares | Value (USD) | % of Portfolio | Open |
|---|---|---|---|---|---|
| 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 ACA
Shares Held
Position Value (USD)
8 quarters on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $28,413,678 | 267,700 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $23,560,512 | 221,600 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $20,766,136 | 221,600 | Shares | Sole | 2025-11-17 | |
| 2025-06-30 | $19,214,936 | 221,600 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $15,655,360 | 203,000 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $19,638,220 | 203,000 | Shares | Sole | 2025-02-14 | |
| 2020-12-31 | $252,678 | 4,600 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $202,814 | 4,600 | Shares | Sole | 2020-11-16 | |
| No 13F history on record for this holder in this stock. | ||||||