PORTOLAN CAPITAL MANAGEMENT LLC
Q2 2024 Form 13-F
BOSTON, MASSACHUSETTS
CIK 0001350290
· CRD 157542
· SEC-registered investment adviser
$1.2B Reported Value Total
PORTOLAN CAPITAL MANAGEMENT, LLC reports 22 total accounts under management (AUM). There are 22 discretionary accounts valued at $1,218,037,689, and 0 non-discretionary accounts.
Source: Form ADV filed * Note that certain holdings are exempt from Form 13-F reporting, so the AUM totals may be greater than the Form 13-F total.
Private funds (Form ADV)
7 funds
· $822.9M gross asset value
Hedge Fund: $822.9M
Source: Form ADV filed 2026-04-15
Reported value
$1.2B
Quarter over quarter
-1.5%
Holdings
117
Top-10 concentration
27.4%
Key People
Form ADV owners & control persons
George Frederic Mccabe
CHIEF INVESTMENT OFFICER, MANAGING DIRECTOR, AND SOLE MEMBER
Nancy Jean Bonner
CHIEF ADMINISTRATIVE OFFICER
Betsy Hochadel Flaherty
CHIEF COMPLIANCE OFFICER
Filing Navigation
Coverage begins with the second quarter of 2013. Earlier quarters are not shown while their accuracy is being verified.
13F Metrics
Loading 13F Metrics
Q2 2024 13F record
Q2 2024 13F filing summary
| Period of report | June 30, 2024 |
|---|---|
| Filed | August 14, 2024 |
| Form | 13F-HR |
| Reported value | $1.2B |
| Positions | 117 |
| Change in reported value | -7.5% |
| New positions | 23 |
| Exited positions | 22 |
| Position turnover | 32.4% |
| Top-10 concentration | 27.4% |
13F filings by quarter
| Quarter | Positions | Value |
|---|---|---|
|
Q2 2026 13F
Filed Aug 14, 2026
|
148 | $2.7B |
|
Q1 2026 13F
Filed May 15, 2026
|
144 | $1.9B |
|
Q4 2025 13F
Filed Feb 17, 2026
|
155 | $1.9B |
|
Q3 2025 13F
Filed Nov 13, 2025
|
119 | $1.8B |
|
Q2 2025 13F
Filed Aug 13, 2025
|
118 | $1.6B |
|
Q1 2025 13F
Filed May 15, 2025
|
109 | $1.3B |
|
Q4 2024 13F
Filed Feb 13, 2025
|
131 | $1.5B |
|
Q3 2024 13F
Filed Nov 14, 2024
|
129 | $1.4B |
|
Q2 2024 13F
Filed Aug 14, 2024
|
117 | $1.2B |
|
Q1 2024 13F
Filed May 15, 2024
|
116 | $1.3B |
|
Q4 2023 13F
Filed Feb 14, 2024
|
127 | $1.1B |
|
Q3 2023 13F
Filed Nov 14, 2023
|
123 | $1.1B |
|
Q2 2023 13F
Filed Aug 14, 2023
|
120 | $1.1B |
|
Q1 2023 13F
Filed May 15, 2023
|
139 | $1.0B |
|
Q4 2022 13F
Filed Feb 13, 2023
|
131 | $1.0B |
|
Q3 2022 13F
Filed Nov 14, 2022
|
128 | $946.2M |
|
Q2 2022 13F
Filed Aug 15, 2022
|
123 | $993.2M |
|
Q1 2022 13F
Filed May 16, 2022
|
136 | $1.3B |
|
Q4 2021 13F
Filed Feb 14, 2022
|
131 | $1.5B |
|
Q3 2021 13F
Filed Nov 15, 2021
|
134 | $1.4B |
33 earlier quarters on file — choose one from the quarter menu above.
Top 20 holdings · Q2 2024
| # | Holding | Reported value | % of portfolio |
|---|---|---|---|
| 1 | LNTH LANTHEUS HLDGS INC | $50.8M | 4.18% |
| 2 | CLS CELESTICA INC | $43.2M | 3.56% |
| 3 | SMCI SUPER MICRO COMPUTER INC | $34.8M | 2.86% |
| 4 | ZETA ZETA GLOBAL HOLDINGS CORP | $33.9M | 2.79% |
| 5 | KTOS KRATOS DEFENSE & SEC SOLUTIONS | $32.6M | 2.69% |
| 6 | ELF E L F BEAUTY INC | $29.4M | 2.42% |
| 7 | MOD MODINE MFG CO | $27.9M | 2.3% |
| 8 | WDC WESTERN DIGITAL CORP. | $27.0M | 2.22% |
| 9 | NVT NVENT ELECTRIC PLC | $26.7M | 2.2% |
| 10 | CSTL CASTLE BIOSCIENCES INC | $26.4M | 2.17% |
| 11 | QTRX QUANTERIX CORP | $25.3M | 2.09% |
| 12 | HNST HONEST CO INC | $23.7M | 1.95% |
| 13 | TTMI TTM TECHNOLOGIES INC | $23.2M | 1.91% |
| 14 | BLFS BIOLIFE SOLUTIONS INC | $21.5M | 1.77% |
| 15 | ACMR ACM RESH INC | $19.7M | 1.63% |
| 16 | NTRA NATERA INC | $18.0M | 1.49% |
| 17 | UTHR UNITED THERAPEUTICS CORP | $17.5M | 1.44% |
| 18 | KMPR KEMPER CORP | $17.0M | 1.4% |
| 19 | MU MICRON TECHNOLOGY INC | $15.9M | 1.31% |
| 20 | GENI GENIUS SPORTS LIMITED | $15.8M | 1.3% |
Values as reported on the Q2 2024 Form 13F. Every position is in the holdings table below.