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THORNBURG INVESTMENT MANAGEMENT INC
CRD 106357File 801-17853
APPROVED
Retail clients
Custody
Disclosure events
Filing as of Mar 27, 2026
Feed vintage Oct 1, 2026
Regulatory AUM
$54.45B
Top 10% of cohort (national)
Discretionary AUM
$54.45B
Clients
613
635 accounts
Employees
219
Top 10% of cohort in NM
Identity & registration
ADV Item 1- Organization form
- Corporation
- Firm type
- Registered
- SEC region
- DRO
- Registration date
- Oct 15, 1982
- Principal office
- 2300 NORTH RIDGETOP ROAD, SANTA FE, NM, 87506
- Phone
- 505-467-7283
- Website
- HTTPS://WWW.THORNBURG.COM
Assets & accounts
ADV Item 5F- Total regulatory AUM
- $54.45B
- Discretionary AUM
- $54.45B
- Non-discretionary AUM
- $0
- Discretionary accounts
- 635
- Non-discretionary accounts
- 0
- Total accounts
- 635
- AUM per client
- $88.8M
Clients by type
ADV Item 5D| Client type | Clients | AUM |
|---|---|---|
| Other | 52 | $338.9M |
| Investment companies | 25 | $49.53B |
| Charitable organizations | 8 | $5.1M |
| Other investment advisers | 6 | $42.6M |
| High net worth individuals | 187 | $385.8M |
| Pooled investment vehicles | 35 | $2.50B |
| Individuals (other than high net worth individuals) | 300 | $864.4M |
Compensation & activities
ADV Items 5E, 5GCompensation
- A percentage of assets under your management
Advisory activities
- Other 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
- No
- Firm Custody Clients
- No
- 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 11- Q11
- Q11D2
Filed changes
| Date | Field | From | To | Change |
|---|---|---|---|---|
| Aug 17, 2026 | Clients | 635 | 613 | decreased by22 |
| Apr 1, 2026 | Clients | 705 | 635 | decreased by70 |
| Apr 1, 2026 | AUM | $45,288,445,586 | $54,452,002,823 | increased by$9,163,557,237 |
| Apr 1, 2026 | Accounts | 705 | 635 | decreased by70 |
| May 1, 2025 vs Oct 1, 2022 | Employees | 203 | 219 | increased by16 |
| May 1, 2025 vs Oct 1, 2022 | Clients | 719 | 705 | decreased by14 |
| May 1, 2025 vs Oct 1, 2022 | AUM | $47,059,818,550 | $45,288,445,586 | decreased by$1,771,372,964 |
| May 1, 2025 vs Oct 1, 2022 | Accounts | 719 | 705 | decreased by14 |
| Apr 1, 2022 | Employees | 194 | 203 | increased by9 |
| Apr 1, 2022 | Clients | 702 | 719 | increased by17 |
| Apr 1, 2022 | AUM | $43,583,549,685 | $47,059,818,550 | increased by$3,476,268,865 |
| Apr 1, 2022 | Accounts | 704 | 719 | increased by15 |
| 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 “THORNBURG INVESTMENT” as a service provider on 5500mcp →Matched by name only — Form ADV and Form 5500 share no identifier, and names are searched loosely (“THORNBURG 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.