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SEC-registered firm

Registration does not mean the SEC approves or recommends the firm, and it does not imply a certain level of skill or training.

Portolan Capital Management, LLC

Boston, MA

CRD 157542

Firm filing updated April 15, 2026 ·

  • $2BAssets
  • 4Advisory staff
  • 20Accounts

Fees and minimums

All fee types on the form
  • Percentage of assets under managementYes
  • Performance-based feesYes
  • Hourly chargesNo
  • Fixed feesNo
  • Subscription fees (for a newsletter or periodical)No
  • CommissionsNo
  • OtherNo

Who the firm serves

See the client table
Clients by type
Client typeApproximate number of clientsAssets
High net worth individuals14$267.1 million
Investment companies1$1.0 billion
Pooled investment vehicles (other than investment companies and business development companies)4$597.0 million
Charitable organizationsFewer than 5 clients$110.0 million
What the client labels mean

Here, "individuals" includes trusts, estates, and IRAs of individuals. A "high net worth individual" is a qualified client or qualified purchaser.

Services

  • Portfolio management for individuals and/or small businesses
  • Portfolio management for investment companies
  • Portfolio management for pooled investment vehicles (other than investment companies)
See all 4 services
  • Portfolio management for businesses (other than small businesses) or institutional clients
  • Portfolio management for individuals and/or small businesses
  • Portfolio management for investment companies
  • Portfolio management for pooled investment vehicles (other than investment companies)
  • Portfolio management for businesses (other than small businesses) or institutional clients

Assets and accounts

  • Regulatory assets$2.0 billion
  • Accounts20
  • DiscretionaryAll accounts

People

  • Employees12
  • Advisory staff4
  • Broker-dealer reps0
  • Licensed insurance agents0
Registration details
  • SEC-registered investment advisor. CRD 157542, SEC file 801-73963.
  • Registered with the SEC as an investment advisor (status date on record: March 30, 2012).

Is Portolan Capital Management, LLC a fiduciary?

Short answer: Portolan Capital Management, LLC is registered with the SEC as an investment advisor.

More detail

The SEC put it this way in 2019: 'Under federal law, an investment adviser is a fiduciary.'

The firm does not report commissions, a broker-dealer role, a related broker-dealer, or staff who are broker-dealer representatives.

The firm's Form CRS explains its services, fees and conflicts in plain language: Form CRS.

About this data

Informational only. Advisable Finance is not an investment advisor, does not give investment advice, and does not endorse any advisor.

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