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Asset manager · Marblehead, MA

Little Harbor Advisors, LLC

SEC-registered investment adviser · CRD 168700 · SEC 801-78486

At a glance

Little Harbor Advisors, LLC is an SEC-registered investment adviser based in Marblehead, Massachusetts, with $243 million in regulatory assets under management as of its Form ADV filed September 14, 2026. Its largest client group by assets is investment companies. By Form ADV it is a asset manager, ranked 2,025th of 3,218 asset managers and 11,233rd of 17,210 SEC-registered advisers by assets.

Main office 781-639-3000littleharboradvisors.comLinkedInAs filed on Form ADV

Regulatory AUM
$243M
Rank among asset managers
#2,025 of 3,218
Rank among all SEC RIAs
#11,233 of 17,210
Rank in Massachusetts
#476 of 627
Clients
4
Accounts
4
Discretionary
100% of AUM
Employees
13
Advisory staff
11
Offices
1

Owners and executives on its Form ADV

Custody and brokerage

Custodian

Little Harbor Advisors, LLC’s Form ADV lists no custodian for separately managed accounts. Firms report one only when they manage $10 million or more in those accounts.

Broker-dealer

Hybrid RIA

Little Harbor Advisors, LLC is a hybrid RIA: 1 of its employees are also registered representatives of a broker-dealer.

Form ADV Part 1 doesn’t name an unaffiliated broker-dealer. The firm’s Part 2A brochure (Item 10) and each adviser’s record on the SEC’s adviser search do.

Other hybrid RIAs

Who it serves

Client typeClientsRegulatory AUMShare
Investment companies3$234M96%
Pooled investment vehicles1$9M4%

Private funds

Little Harbor Advisors, LLC reports 1 private funds with $9M in gross assets: hedge funds (Form ADV Item 7.B).

Disciplinary disclosures

Little Harbor Advisors, LLC reports no disciplinary disclosures in Item 11 of Form ADV. Read the details on the SEC’s adviser search ↗

Services

  • Portfolio management for investment companies
  • Portfolio management for pooled investment vehicles

How it’s paid

  • A percentage of assets under management
  • Other

AtlasMembers

The full record on Little Harbor Advisors, LLC

Ten years of SEC filings, its owners and contacts, and how it stacks up against its peers. Atlas members see all of it.

Assets, accounts, clients and staff, ten years of filings
Locked
Growth over one, three and five years
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Rank against 866 peers of its type and size
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Owners and executives, with titles and stakes
6 namedLocked
Main office, fax and compliance officer
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Filing changes this year, with alerts
2Locked
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Free while Atlas launches: create a free account and confirm your email. Every figure comes from SEC filings.

Background

Questions

How much does Little Harbor Advisors, LLC manage?

Little Harbor Advisors, LLC reports $243 million in regulatory assets under management across 4 accounts, 100% of it on a discretionary basis, on its Form ADV filed September 14, 2026.

What kind of firm is Little Harbor Advisors, LLC?

Little Harbor Advisors, LLC is a asset manager by its Form ADV answers. Most of its assets are managed for funds, institutions or other businesses rather than individuals.

Who are Little Harbor Advisors, LLC’s clients?

By assets, its largest client types are investment companies ($234 million, 3 clients); pooled investment vehicles ($9 million, 1 clients).

Does Little Harbor Advisors, LLC manage private funds?

Yes. It reports 1 private funds with $9 million in gross assets, including hedge funds.

Does Little Harbor Advisors, LLC have any disciplinary history?

Little Harbor Advisors, LLC reports no disciplinary disclosures in Item 11 of its Form ADV. Check the SEC’s adviser search for the latest record.

Where these numbers come from

Every figure is Little Harbor Advisors, LLC’s own answer on its latest Form ADV, from the SEC’s registered-adviser list as of October 1, 2026: regulatory assets and accounts (Item 5.F), clients by type (5.D), employees (5.A and 5.B), compensation (5.E) and services (5.G). Custodians come from Schedule D 5.K(3) of its latest filing (2026-09-14), which lists those holding 10% or more of separately managed account assets and the amount at each. “Hybrid” means some employees are also registered representatives of a broker-dealer (Item 5.B(2)); affiliated broker-dealers are the related persons it lists in Item 7.A and Schedule D. Firm type comes from its own answers: broker-dealer firms are registered broker-dealers themselves (Item 6.A); private fund advisers manage mostly private funds (Item 7.B, 5.D); wealth managers manage at least half their assets for individuals (5.D). Ranks compare it by regulatory assets with every SEC-registered adviser and with firms of its type. Figures are as of the firm’s last annual update, so they can lag recent deals and market moves. Regulatory AUM counts assets the firm continuously supervises and can differ from what a firm markets.

Not an endorsement or a recommendation. Before hiring any adviser, read its Form ADV Part 2A brochure and check its record on the SEC’s adviser search. How to check a financial advisor →