Portolan Capital Management, LLC
Top Portfolio Positions
142 positions ·
$1,899,948,334 total
· as of Mar 31, 2026
| Ticker | Company | Shares | Value (USD) | % of Portfolio | Open |
|---|---|---|---|---|---|
| MOD |
Modine Manufacturing Co
Consumer Cyclical
|
412,092 | $89,304,457 | 4.70% | |
| TTMI |
Ttm Technologies Inc
Technology
|
727,494 | $70,872,465 | 3.73% | |
| CSTL |
Castle Biosciences Inc
Healthcare
|
2,700,566 | $66,298,894 | 3.49% | |
| CLS |
Celestica Inc
Technology
|
197,863 | $55,734,049 | 2.93% | |
| VIRT |
Virtu Financial, Inc.
Financial Services
|
1,211,887 | $53,298,790 | 2.81% | |
| AKAM |
Akamai Technologies Inc
Technology
|
423,442 | $48,632,313 | 2.56% | |
| VPG |
Vishay Precision Group, Inc.
Technology
|
1,019,868 | $44,282,668 | 2.33% | |
| PARR |
Par Pacific Holdings, Inc.
Energy
|
693,834 | $43,461,761 | 2.29% | |
| POWL |
Powell Industries Inc
Industrials
|
75,830 | $41,030,096 | 2.16% | |
| BIDU |
Baidu, Inc.
Communication Services
|
366,429 | $40,827,519 | 2.15% |
Portfolio Trend
25 quarters · across all stocks
Holdings in QLYS
Shares Held
Position Value (USD)
11 quarters on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $20,998,609 | 239,028 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $6,891,529 | 51,855 | Shares | Sole | 2026-02-17 | |
| 2022-12-31 | $4,120,524 | 36,715 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $3,351,353 | 24,043 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $3,039,595 | 24,097 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $5,580,478 | 39,186 | Shares | Sole | 2022-05-16 | |
| 2021-09-30 | $2,582,484 | 23,205 | Shares | Sole | 2021-11-15 | |
| 2020-12-31 | $7,333,770 | 60,177 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $8,282,041 | 84,502 | Shares | Sole | 2020-11-16 | |
| 2020-06-30 | $6,860,951 | 65,958 | Shares | Sole | 2020-08-14 | |
| 2020-03-31 | $17,056,999 | 196,080 | Shares | Sole | 2020-05-14 | |
| No 13F history on record for this holder in this stock. | ||||||