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AdvisorCensus / Financial advisors / Massachusetts / Boston / GW&K Investment Management, LLC

GW&K Investment Management, LLC

Boston, MASEC-registered investment adviserCRD 121942

Filed as GW&K INVESTMENT MANAGEMENT, LLC

GW&K Investment Management, LLC is an SEC-registered investment advisory firm in Boston, MA, registered since 2002, reporting over $5 billion in regulatory assets under management in its Form ADV filing dated March 26, 2026.

23 years
registered since 2002
$52,782,948,184
assets under management
3 arrangements
Percentage of assets, Fixed fees and more
None
disclosure items (Item 11)

Quick answers

From the filing

How is GW&K Investment Management, LLC compensated?

On its Form ADV (Item 5.E, October 2026), GW&K Investment Management, LLC reports these compensation arrangements: a percentage of assets under its management; fixed fees (other than subscription fees); performance-based fees.

Where is GW&K Investment Management, LLC located?

GW&K Investment Management, LLC's principal office is in Boston, MA, according to its Form ADV.

Is GW&K Investment Management, LLC registered with the SEC or a state?

GW&K Investment Management, LLC is an SEC-registered investment advisory firm, registered since 2002. Status as filed: Approved. CRD 121942.

How much does GW&K Investment Management, LLC manage?

GW&K Investment Management, LLC reports $52,782,948,184 in regulatory assets under management in its Form ADV filing dated March 26, 2026 (100% discretionary).

How have GW&K Investment Management, LLC's assets and staff changed since 2021?

In the Form ADV data for GW&K Investment Management, LLC: Regulatory assets under management: $51,431,909,403 in the October 2021 data and $52,782,948,184 in the October 2026 data, up 3%. Total employees: 155 in October 2021 and 177 in October 2026. Assets under management move with markets as well as with clients coming and going.

What types of clients does GW&K Investment Management, LLC serve?

By number of clients on Form ADV Item 5.D: high net worth individuals (47,749); corporations or other businesses not listed above (776); pension and profit sharing plans (but not the plan participants or government pension plans) (123).

Which custodians does GW&K Investment Management, LLC use?

GW&K Investment Management, LLC's most recent Form ADV filing (Schedule D, Section 5.K(3)) lists Charles Schwab & Co., Inc. and Merrill Lynch, Pierce, Fenner & Smith Incorporated as custodians holding 10% or more of its separately managed account assets.

Does GW&K Investment Management, LLC report any disciplinary disclosures?

Reports no disclosure items on Form ADV Item 11. The detail of any item is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/121942

What changed in GW&K Investment Management, LLC's recent Form ADV filings?

In the April 2026 filing data: Employees performing advisory functions went from 68 to 63. Updated its list of owners and control persons (Schedule A).

From the Form ADV filing

Every figure below is as the firm filed it with regulators, as of October 2026.

How the firm is compensated

Item 5.E
  • A percentage of assets under your management
  • Fixed fees (other than subscription fees)
  • Performance-based fees

Item 5.E lists how the firm is compensated for its advice; Items 5.B, 6.A, and 7.A show whether its people or related companies can also earn commissions. Percentage of assets, fixed, hourly, subscription, and performance-based fees come from clients (a performance-based fee depends on investment results); commissions come with a sale or a trade, often from the company behind the product. How fees, commissions, and other arrangements differ

Fees and minimums

Form ADV Part 2A

The brochure lists different fees for different services or strategies. See the firm's brochure (dated March 26, 2026) for its fees and any account minimum, on the SEC's IAPD site.

Regulatory assets under management

Item 5.F
$52,782,948,184

$52,782,948,184 as of October 2026, filing dated March 26, 2026.

Discretionary: $52,782,948,184.Non-discretionary: $0.

A measure of scale, not skill or returns. Discretionary means the firm decides trades; non-discretionary means clients approve each one. What assets under management means

Who the firm serves

Item 5.D
Individuals (other than high net worth individuals)
Clients 0 Assets $0 (0%)
High net worth individuals
Clients 47,749 Assets $40,390,650,819 (77%)
Banking or thrift institutions
Clients 17 Assets $312,237,818 (1%)
Investment companies
Clients 17 Assets $4,932,075,975 (9%)
Business development companies
Clients 0 Assets $0 (0%)
Pooled investment vehicles (other than investment companies and business development companies)
Clients 14 Assets $3,004,683,173 (6%)
Pension and profit sharing plans (but not the plan participants or government pension plans)
Clients 123 Assets $707,676,146 (1%)
Charitable organizations
Clients 0 Assets $0 (0%)
State or municipal government entities (including government pension plans)
Clients 13 Assets $294,311,138 (1%)
Other investment advisers
Clients 0 Assets $0 (0%)
Insurance companies
Clients 0 Assets $0 (0%)
Sovereign wealth funds and foreign official institutions
Clients 1 Assets $20,365,707 (0%)
Corporations or other businesses not listed above
Clients 776 Assets $3,120,947,408 (6%)
Other
Clients 0 Assets $0 (0%)

A firm with no individual clients is an institutional manager even if it manages billions; the mix tells you whom the practice is built around.

Advisory services

Item 5.G
  • Financial planning services
  • Portfolio management for individuals and/or small businesses
  • Portfolio management for investment companies (and business development companies)
  • Portfolio management for pooled investment vehicles (other than investment companies)
  • Portfolio management for businesses (other than small businesses) or institutional clients
  • Selection of other advisers (including private fund managers)

Registration and firm details

Items 1, 2, 5
Registration
SEC-registered investment adviser. Status as filed: Approved.
Registered since
2002 (23 years)
Employees
Total: 177. Performing investment advisory functions: 63.
Wrap fee program participation
Yes.
Custodians (Schedule D, Section 5.K(3))

Custodians holding 10% or more of the firm's separately managed account assets, as filed on Form ADV (Schedule D, Section 5.K(3)). A custodian holds client assets; it does not endorse or supervise the firm. AdvisorCensus has no relationship with any custodian.

States registered or notice-filed
53 states or jurisdictions
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SEC-registered investment advisers are examined by the SEC. SEC, state, and exempt registration

Disclosures

Item 11

None Reports no disclosure items on Form ADV Item 11. View on IAPD.

Item 11 asks about criminal, regulatory, and civil events involving the firm and its advisory personnel. The detail of each yes answer is on the IAPD record. Reading a firm's disclosures

Assets and staff over time

Items 5.A, 5.F
$51.4B 2021 $54.7B 2022 $46.8B 2023 $50.7B 2024 $52.9B 2025 $52.8B 2026
Data periodAssets under managementEmployeesFiling dated
October 2026$52,782,948,184177March 26, 2026
October 2025$52,933,746,966180March 27, 2025
October 2024$50,695,320,951181March 27, 2024
October 2023$46,803,858,104184March 29, 2023
October 2022$54,720,660,219175March 31, 2022
October 2021$51,431,909,403155March 26, 2021

Regulatory assets under management: $51,431,909,403 in the October 2021 data and $52,782,948,184 in the October 2026 data, up 3%.

Total employees: 155 in October 2021 and 177 in October 2026.

As filed in each year's data for the same month. Assets under management move with markets as well as with clients coming and going; they measure scale, not skill or returns. Most firms update these figures once a year.

Changes in the filing

Last 12 months
  1. April 2026
    • Employees performing advisory functions went from 68 to 63.
    • Updated its list of owners and control persons (Schedule A).

Compared month to month from the SEC's monthly adviser data and the state compilation feed. Owners and control persons are summarized, never named.

Websites listed on Form ADV

Item 1.I
gwkinvest.com

Source: Form ADV, as of October 2026. Values appear as filed; a value the firm did not report is shown as "Not reported."

Cite this page

AdvisorCensus. GW&K Investment Management, LLC (CRD 121942): Form ADV filing data as of October 2026.
https://advisorcensus.com/firm/gw-and-k-investment-management-llc-boston-ma-121942