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PORTOLAN CAPITAL MANAGEMENT, LLC
CRD 157542File 801-73963
APPROVED
Retail clients
Custody
Filing as of Apr 15, 2026
Feed vintage Oct 1, 2026
Regulatory AUM
$2.02B
Top 25% of cohort (national)
Discretionary AUM
$2.02B
Clients
19
20 accounts
Employees
12
Above cohort median in MA
Identity & registration
ADV Item 1- Organization form
- Limited Liability Company
- Firm type
- Registered
- SEC region
- BRO
- Registration date
- Mar 30, 2012
- Principal office
- TWO INTERNATIONAL PLACE, SUITE 2630, BOSTON, MA, 02110
- Phone
- 617-753-6400
- Website
- https://portolan.com/
Assets & accounts
ADV Item 5F- Total regulatory AUM
- $2.02B
- Discretionary AUM
- $2.02B
- Non-discretionary AUM
- $0
- Discretionary accounts
- 20
- Non-discretionary accounts
- 0
- Total accounts
- 20
- AUM per client
- $106.4M
Clients by type
ADV Item 5D| Client type | Clients | AUM |
|---|---|---|
| Investment companies | 1 | $1.05B |
| Charitable organizations | Fewer than 5 | $110.0M |
| High net worth individuals | 14 | $267.1M |
| Pooled investment vehicles | 4 | $597.0M |
Compensation & activities
ADV Items 5E, 5GCompensation
- Performance-based fees
- A percentage of assets under your management
Advisory activities
- Portfolio management for businesses
- Portfolio management for investment companies
- Portfolio management for pooled investment vehicles
- Portfolio management for individuals and/or small businesses
Custody
ADV Item 9- Firm Custody Cash
- Yes
- Firm Custody Assets
- Yes
- Firm Custody Clients
- Yes
- Firm Custody Securities
- Yes
- Related Person Custody Cash
- No
- Related Person Custody Assets
- No
- Related Person Custody Clients
- No
- Related Person Custody Securities
- Yes
Disclosure events
ADV Item 11This firm answered no to every Item 11 disclosure question in this filing.
Filed changes
| Date | Field | From | To | Change |
|---|---|---|---|---|
| Apr 1, 2026 | Clients | 21 | 19 | decreased by2 |
| Apr 1, 2026 | AUM | $1,581,996,022 | $2,021,361,155 | increased by$439,365,133 |
| Apr 1, 2026 | Accounts | 22 | 20 | decreased by2 |
| May 1, 2025 vs Oct 1, 2022 | Employees | 11 | 12 | increased by1 |
| May 1, 2025 vs Oct 1, 2022 | Clients | 18 | 21 | increased by3 |
| May 1, 2025 vs Oct 1, 2022 | AUM | $1,560,232,109 | $1,581,996,022 | increased by$21,763,913 |
| May 1, 2025 vs Oct 1, 2022 | Accounts | 19 | 22 | increased by3 |
| Apr 1, 2022 | Clients | 15 | 18 | increased by3 |
| Apr 1, 2022 | AUM | $1,224,603,076 | $1,560,232,109 | increased by$335,629,033 |
| Apr 1, 2022 | Accounts | 16 | 19 | increased by3 |
| Apr 1, 2021 | Registration | — | APPROVED |
On Form 5500, an adviser usually appears as a plan service provider (Schedule C), not the plan sponsor.
See plans that list “PORTOLAN CAPITAL” as a service provider on 5500mcp →Matched by name only — Form ADV and Form 5500 share no identifier, and names are searched loosely (“PORTOLAN CAPITAL” may also match similarly-named firms). Confirm identity against each filing.
Every value above is reproduced from this firm's Form ADV filing. Fields the firm left blank are shown as “Not reported” rather than filled in from other sources.