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GW&K INVESTMENT MANAGEMENT, LLC
CRD 121942File 801-61559
APPROVED
Retail clients
Custody
Filing as of Mar 26, 2026
Feed vintage Oct 1, 2026
Regulatory AUM
$52.78B
Top 10% of cohort (national)
Discretionary AUM
$52.78B
Clients
48,710
48,710 accounts
Employees
177
Top 10% of cohort in MA
Identity & registration
ADV Item 1- Organization form
- Limited Liability Company
- Firm type
- Registered
- SEC region
- BRO
- Registration date
- Nov 18, 2002
- Principal office
- 222 BERKELEY STREET, 15TH FLOOR, BOSTON, MA, 02116
- Phone
- 617-236-8900
- Website
- https://www.gwkinvest.com/
Assets & accounts
ADV Item 5F- Total regulatory AUM
- $52.78B
- Discretionary AUM
- $52.78B
- Non-discretionary AUM
- $0
- Discretionary accounts
- 48,710
- Non-discretionary accounts
- 0
- Total accounts
- 48,710
- AUM per client
- $1.1M
Clients by type
ADV Item 5D| Client type | Clients | AUM |
|---|---|---|
| Other | 776 | $3.12B |
| Non-U.S. persons | Fewer than 5 | $20.4M |
| Investment companies | 17 | $4.93B |
| High net worth individuals | 47,749 | $40.39B |
| Pooled investment vehicles | 14 | $3.00B |
| Banking or thrift institutions | 17 | $312.2M |
| Pension and profit sharing plans | 123 | $707.7M |
| State or municipal government entities | 13 | $294.3M |
Compensation & activities
ADV Items 5E, 5GCompensation
- Fixed fees
- Performance-based fees
- A percentage of assets under your management
Advisory activities
- Financial planning services
- Selection of other advisers
- 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
- No
- Firm Custody Assets
- Yes
- Firm Custody Clients
- Yes
- Firm Custody Securities
- No
- Related Person Custody Cash
- Yes
- 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 | Employees | 180 | 177 | decreased by3 |
| Apr 1, 2026 | Clients | 50,559 | 48,710 | decreased by1,849 |
| Apr 1, 2026 | AUM | $52,933,746,966 | $52,782,948,184 | decreased by$150,798,782 |
| Apr 1, 2026 | Accounts | 50,559 | 48,710 | decreased by1,849 |
| May 1, 2025 vs Oct 1, 2022 | Employees | 175 | 180 | increased by5 |
| May 1, 2025 vs Oct 1, 2022 | Clients | 49,091 | 50,559 | increased by1,468 |
| May 1, 2025 vs Oct 1, 2022 | AUM | $54,720,660,219 | $52,933,746,966 | decreased by$1,786,913,253 |
| May 1, 2025 vs Oct 1, 2022 | Accounts | 49,094 | 50,559 | increased by1,465 |
| Apr 1, 2022 | Employees | 155 | 175 | increased by20 |
| Apr 1, 2022 | Clients | 46,515 | 49,091 | increased by2,576 |
| Apr 1, 2022 | AUM | $51,431,909,403 | $54,720,660,219 | increased by$3,288,750,816 |
| Apr 1, 2022 | Accounts | 46,518 | 49,094 | increased by2,576 |
| 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 “GW INVESTMENT” as a service provider on 5500mcp →Matched by name only — Form ADV and Form 5500 share no identifier, and names are searched loosely (“GW INVESTMENT” 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.