OBERWEIS ASSET MANAGEMENT INC/
Top Portfolio Positions
177 positions ·
$3,384,941,871 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 | 5.87% | |
| LITE |
Lumentum Holdings Inc.
Technology
|
266,222 | $187,090,172 | 5.53% | |
| CRDO |
Credo Technology Group Holding Ltd
Technology
|
1,021,968 | $95,932,136 | 2.83% | |
| DOCN |
DigitalOcean Holdings, Inc.
Technology
|
927,505 | $79,561,378 | 2.35% | |
| SN |
SharkNinja, Inc.
Consumer Cyclical
|
599,970 | $63,536,823 | 1.88% | |
| NVMI |
Nova Ltd.
Technology
|
137,955 | $59,911,097 | 1.77% | |
| DAN |
DANA Inc
Consumer Cyclical
|
1,611,500 | $54,226,975 | 1.60% | |
| 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 OSW
Shares Held
Position Value (USD)
10 quarters on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $11,146,585 | 485,690 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $9,890,698 | 476,890 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $9,838,556 | 465,400 | Shares | Sole | 2025-11-17 | |
| 2025-06-30 | $9,489,506 | 465,400 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $7,814,066 | 465,400 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $9,261,460 | 465,400 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $6,980,428 | 422,800 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $6,461,548 | 420,400 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $5,561,892 | 420,400 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $3,502,440 | 248,400 | Shares | Sole | 2024-02-14 | |
| No 13F history on record for this holder in this stock. | ||||||