Portolan Capital Management, LLC
Top Portfolio Positions
141 positions ·
$1,858,184,444 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 | 4.81% | |
| TTMI |
Ttm Technologies Inc
Technology
|
727,494 | $70,872,465 | 3.81% | |
| CLS |
Celestica Inc
Technology
|
197,863 | $55,734,049 | 3.00% | |
| VIRT |
Virtu Financial, Inc.
Financial Services
|
1,211,887 | $53,298,790 | 2.87% | |
| AKAM |
Akamai Technologies Inc
Technology
|
423,442 | $48,632,313 | 2.62% | |
| VPG |
Vishay Precision Group, Inc.
Technology
|
1,019,868 | $44,282,668 | 2.38% | |
| PARR |
Par Pacific Holdings, Inc.
Energy
|
693,834 | $43,461,761 | 2.34% | |
| POWL |
Powell Industries Inc
Industrials
|
75,830 | $41,030,096 | 2.21% | |
| BIDU |
Baidu, Inc.
Communication Services
|
366,429 | $40,827,519 | 2.20% | |
| PBF |
PBF Energy Inc.
Energy
|
799,998 | $38,095,904 | 2.05% |
Portfolio Trend
23 quarters · across all stocks
Holdings in CSTL
Shares Held
Position Value (USD)
20 quarters on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $33,149,447 | 1,350,283 | Shares | Sole | 2026-05-15 | |
| 2025-06-30 | $30,417,060 | 1,489,572 | Shares | Sole | 2025-08-13 | |
| 2025-04-07 | $30,755,879 | 1,611,099 | Shares | Sole | 2025-04-14 | |
| 2025-03-31 | $25,329,764 | 1,265,223 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $20,695,830 | 776,579 | Shares | Sole | 2025-02-13 | |
| 2024-09-30 | $35,810,510 | 1,255,628 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $26,362,425 | 1,210,952 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $23,111,531 | 1,043,410 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $15,724,331 | 728,653 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $4,273,642 | 253,028 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $5,919,823 | 431,474 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $5,831,065 | 256,649 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $13,740,674 | 583,716 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $7,839,387 | 300,590 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $3,401,547 | 154,968 | Shares | Sole | 2022-08-15 | |
| 2021-06-30 | $669,282 | 9,127 | Shares | Sole | 2021-08-16 | |
| 2020-12-31 | $1,112,876 | 16,573 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $1,421,666 | 27,632 | Shares | Sole | 2020-11-16 | |
| 2020-06-30 | $2,707,423 | 71,834 | Shares | Sole | 2020-08-14 | |
| 2020-03-31 | $4,043,845 | 135,654 | Shares | Sole | 2020-05-14 | |
| No 13F history on record for this holder in this stock. | ||||||