# EDGAR Filing Document

**Accession Number:** 0000816153
**File Stem:** 0001410368-26-051172
**Filing Date:** 2026-5
**Character Count:** 18003
**Document Hash:** 60d3d86c13c0ea0086ae5a29f3f43a65
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001410368-26-051172.hdr.sgml**: 20260526

**ACCESSION NUMBER**: 0001410368-26-051172

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260331

**FILED AS OF DATE**: 20260526

**DATE AS OF CHANGE**: 20260526

**PERIOD START**: 20260930

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** THORNBURG INVESTMENT TRUST
- **CENTRAL INDEX KEY:** 0000816153

**ORGANIZATION NAME:**
- **EIN:** 061158764
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0930

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-05201
- **FILM NUMBER:** 261016877

**BUSINESS ADDRESS:**
- **STREET 1:** 2300 NORTH RIDGETOP ROAD
- **CITY:** SANTA FE
- **STATE:** NM
- **ZIP:** 87506-8361
- **BUSINESS PHONE:** 5059840200

**MAIL ADDRESS:**
- **STREET 1:** 2300 NORTH RIDGETOP ROAD
- **CITY:** SANTA FE
- **STATE:** NM
- **ZIP:** 87506-8361

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** THORNBURG INCOME TRUST
- **DATE OF NAME CHANGE:** 19920703

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** LIMITED TERM TRUST
- **DATE OF NAME CHANGE:** 19870816

## Series and Classes Contracts Data

### Thornburg Developing World Fund (Series ID: S000027135)

| Class ID   | Class Name                               | Ticker Symbol   |
|:---|:---|:---|
| C000081859 | Thornburg Developing World Fund Class A  | THDAX           |
| C000081860 | Thornburg Developing World Fund Class C  | THDCX           |
| C000081861 | Thornburg Developing World Fund Class I  | THDIX           |
| C000123224 | Thornburg Developing World Fund Class R5 | THDRX           |
| C000123225 | Thornburg Developing World Fund Class R6 | TDWRX           |

## Form NPORT-P: Monthly Portfolio Investments Report

### NPORT-P: Part A: General Information

**Item A.1. Information about the Registrant.**

- **a. Name of Registrant:** THORNBURG INVESTMENT TRUST

- **b. Investment Company Act file number:** 811-05201

- **c. CIK number of Registrant:** 0000816153

- **d. LEI of Registrant:** 5493001XM52H8S4WYY82

- **e. Address and telephone number of Registrant.**

  - **Street Address 1:** 2300 NORTH RIDGETOP ROAD

  - **City:** SANTA FE

  - **State:** NM

  - **Foreign country:** US

  - **Zip / Postal Code:** 87506-8361

  - **Telephone number:** 505-984-0200

**Item A.2. Information about the Series.**

- **a. Name of Series:** Thornburg Developing World Fund

- **b. EDGAR series identifier (if any):** S000027135

- **c. LEI of Series:** 549300SSXKZ1YEWI0209

**Item A.3. Reporting period.**

- **a. Date of fiscal year-end:** 2026-09-30

- **b. Date as of which information is reported:** 2026-03-31

**Item A.4. Final filing**

Does the Fund anticipate that this will be its final filing on Form N-PORT? **No**

### Fund Information

**Total Assets:** $587513574.60

**Total Liabilities:** $1201333.99

**Net Assets:** $586312240.61

**Cash Not Reported:** $69.21

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000081859 | 7.90%                | 3.82%                | -8.76%               |
| Class ID C000081860 | 7.78%                | 3.76%                | -8.84%               |
| Class ID C000081861 | 7.90%                | 3.83%                | -8.71%               |
| Class ID C000123224 | 7.93%                | 3.81%                | -8.71%               |
| Class ID C000123225 | 7.92%                | 3.82%                | -8.70%               |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $4646094.15              | $41560933.62                               |
| Month 2  | $7244643.56              | $17277333.72                               |
| Month 3  | $4927923.42              | $-62898326.66                              |

### Schedule of Portfolio Investments

| Name                                       | Title                                      | Identifiers                                   | Payoff Profile   | Asset Category   | Issuer Category   | Country   |   Balance | Units   | Value (USD)   | % of Net Assets   | Maturity Date   | Coupon Type   | Annualized Rate (%)   | Restricted?   |   Fair Value Level | Lending Status   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Petroleo Brasileiro SA - Petrobras         | Petroleo Brasileiro SA - Petrobras         | CUSIP: 000000000<br>LEI: 5493000J801JZRCMFE49 | Long             | EP               | CORP              | BR        |   2137972 | NS      | $20088438.32  | 3.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Arca Continental SAB de CV                 | Arca Continental SAB de CV                 | CUSIP: 000000000<br>LEI: 254900U2BSJCQHJCXN24 | Long             | EC               | CORP              | MX        |   1685800 | NS      | $19418256.43  | 3.31%             |  |  |  | No            |                  1 | On Loan: No      |
| MercadoLibre Inc                           | MercadoLibre Inc                           | CUSIP: 58733R102<br>LEI: 549300DKPDN9M5S8GB14 | Long             | EC               | CORP              | US        |      4902 | NS      | $8475656.04   | 1.45%             |  |  |  | No            |                  1 | On Loan: No      |
| Reliance Industries Ltd                    | Reliance Industries Ltd                    | CUSIP: 000000000<br>LEI: 5493003UOETFYRONLG31 | Long             | EC               | CORP              | IN        |    765442 | NS      | $11044294.02  | 1.88%             |  |  |  | No            |                  2 | On Loan: No      |
| MediaTek Inc                               | MediaTek Inc                               | CUSIP: 000000000<br>LEI: 254900UEGBK1I4DM4E14 | Long             | EC               | CORP              | TW        |    329000 | NS      | $15780529.97  | 2.69%             |  |  |  | No            |                  2 | On Loan: No      |
| Bharti Airtel Ltd                          | Bharti Airtel Ltd                          | CUSIP: 000000000<br>LEI: 335800KQ1FPKOQ84OR26 | Long             | EC               | CORP              | IN        |    504897 | NS      | $9631353.30   | 1.64%             |  |  |  | No            |                  2 | On Loan: No      |
| SK hynix Inc                               | SK hynix Inc                               | CUSIP: 000000000<br>LEI: 988400XAIK6XISWQV045 | Long             | EC               | CORP              | KR        |     41823 | NS      | $23728896.26  | 4.05%             |  |  |  | No            |                  2 | On Loan: No      |
| Samsung Electronics Co Ltd                 | Samsung Electronics Co Ltd                 | CUSIP: 000000000<br>LEI: 9884007ER46L6N7EI764 | Long             | EC               | CORP              | KR        |    274593 | NS      | $32116752.40  | 5.48%             |  |  |  | No            |                  2 | On Loan: No      |
| Taiwan Semiconductor Manufacturing Co Ltd  | Taiwan Semiconductor Manufacturing Co Ltd  | CUSIP: 000000000<br>LEI: 549300KB6NK5SBD14S87 | Long             | EC               | CORP              | TW        |   1717659 | NS      | $99339992.15  | 16.94%            |  |  |  | No            |                  2 | On Loan: No      |
| Tenaga Nasional Bhd                        | Tenaga Nasional Bhd                        | CUSIP: 000000000<br>LEI: 549300FV8X6UID6I1413 | Long             | EC               | CORP              | MY        |   3884299 | NS      | $13378700.93  | 2.28%             |  |  |  | No            |                  2 | On Loan: No      |
| Sea Ltd                                    | Sea Ltd                                    | CUSIP: 81141R100<br>LEI: 529900OM6JLLW44YKI15 | Long             | EC               | CORP              | KY        |    104726 | NS      | $8672360.06   | 1.48%             |  |  |  | No            |                  1 | On Loan: No      |
| Thornburg Capital Management Fund          | Thornburg Capital Management Fund          | CUSIP: 885216739<br>LEI: 549300GLR0WG6ALV5277 | Long             | EC               | RF                | US        |   1414769 | NS      | $14147686.39  | 2.41%             |  |  |  | No            |                  1 | On Loan: No      |
| ADNOC Drilling Co PJSC                     | ADNOC Drilling Co PJSC                     | CUSIP: 000000000<br>LEI: 254900JPRSQL1PM0JV19 | Long             | EC               | CORP              | AE        |   9162545 | NS      | $12957673.98  | 2.21%             |  |  |  | No            |                  2 | On Loan: No      |
| 360 ONE WAM Ltd                            | 360 ONE WAM Ltd                            | CUSIP: 000000000<br>LEI: 335800DDYMCDBO5OLL32 | Long             | EC               | CORP              | IN        |    731083 | NS      | $7272200.21   | 1.24%             |  |  |  | No            |                  2 | On Loan: No      |
| Naspers Ltd                                | Naspers Ltd                                | CUSIP: 000000000<br>LEI: 21380044BQ8812EEKT59 | Long             | EC               | CORP              | ZA        |    493181 | NS      | $25510760.19  | 4.35%             |  |  |  | No            |                  2 | On Loan: No      |
| Piraeus Bank SA                            | Piraeus Bank SA                            | CUSIP: 000000000<br>LEI: 213800OYHR1MPQ5VJL60 | Long             | EC               | CORP              | GR        |   1240452 | NS      | $10191560.19  | 1.74%             |  |  |  | No            |                  2 | On Loan: No      |
| Techtronic Industries Co Ltd               | Techtronic Industries Co Ltd               | CUSIP: 000000000<br>LEI: 549300HZW2SBE758OK89 | Long             | EC               | CORP              | HK        |    843916 | NS      | $11207395.73  | 1.91%             |  |  |  | No            |                  2 | On Loan: No      |
| China Mengniu Dairy Co Ltd                 | China Mengniu Dairy Co Ltd                 | CUSIP: 000000000<br>LEI: 2549005Q343BSJ8RSS21 | Long             | EC               | CORP              | KY        |   4229200 | NS      | $9343581.72   | 1.59%             |  |  |  | No            |                  2 | On Loan: No      |
| Bank Central Asia Tbk PT                   | Bank Central Asia Tbk PT                   | CUSIP: 000000000<br>LEI: 254900BR956G2OHVOM21 | Long             | EC               | CORP              | ID        |  36129100 | NS      | $13955977.00  | 2.38%             |  |  |  | No            |                  2 | On Loan: No      |
| Tata Consultancy Services Ltd              | Tata Consultancy Services Ltd              | CUSIP: 000000000<br>LEI: 335800ZJKU9GPQRE2U66 | Long             | EC               | CORP              | IN        |    260535 | NS      | $6577405.76   | 1.12%             |  |  |  | No            |                  2 | On Loan: No      |
| Itau Unibanco Holding SA                   | Itau Unibanco Holding SA                   | CUSIP: 000000000<br>LEI: 5493002W2IVG62O3ZJ94 | Long             | EP               | CORP              | BR        |   1305727 | NS      | $10960357.92  | 1.87%             |  |  |  | No            |                  1 | On Loan: No      |
| China Construction Bank Corp               | China Construction Bank Corp               | CUSIP: 000000000<br>LEI: 5493001KQW6DM7KEDR62 | Long             | EC               | CORP              | CN        |   9764500 | NS      | $10537981.60  | 1.80%             |  |  |  | No            |                  2 | On Loan: No      |
| Grupo Aeroportuario del Pacifico SAB de CV | Grupo Aeroportuario del Pacifico SAB de CV | CUSIP: 000000000<br>LEI: 4469000001BZ368XFI90 | Long             | EC               | CORP              | MX        |    387135 | NS      | $9534843.67   | 1.63%             |  |  |  | No            |                  1 | On Loan: No      |
| KB Financial Group Inc                     | KB Financial Group Inc                     | CUSIP: 000000000<br>LEI: 529900TKE4MXG3Q6GW86 | Long             | EC               | CORP              | KR        |     94755 | NS      | $9302141.26   | 1.59%             |  |  |  | No            |                  2 | On Loan: No      |
| AIA Group Ltd                              | AIA Group Ltd                              | CUSIP: 000000000<br>LEI: ZP5ILWVSYE4LJGMMVD57 | Long             | EC               | CORP              | HK        |   1988000 | NS      | $22089308.88  | 3.77%             |  |  |  | No            |                  2 | On Loan: No      |
| Contemporary Amperex Technology Co Ltd     | Contemporary Amperex Technology Co Ltd     | CUSIP: 000000000<br>LEI: 300300KINDY1K0E9I032 | Long             | EC               | CORP              | CN        |    185159 | NS      | $10955127.95  | 1.87%             |  |  |  | No            |                  2 | On Loan: No      |
| Salik Co PJSC                              | Salik Co PJSC                              | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | AE        |   6629142 | NS      | $9322088.14   | 1.59%             |  |  |  | No            |                  2 | On Loan: No      |
| Alibaba Group Holding Ltd                  | Alibaba Group Holding Ltd                  | CUSIP: 000000000<br>LEI: 5493001NTNQJDH60PM02 | Long             | EC               | CORP              | KY        |    975500 | NS      | $15290459.90  | 2.61%             |  |  |  | No            |                  2 | On Loan: No      |
| Bangkok Dusit Medical Services PCL         | Bangkok Dusit Medical Services PCL         | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | TH        |  13706100 | NS      | $7854577.34   | 1.34%             |  |  |  | No            |                  2 | On Loan: No      |
| Tencent Holdings Ltd                       | Tencent Holdings Ltd                       | CUSIP: 000000000<br>LEI: 254900N4SLUMW4XUYY11 | Long             | EC               | CORP              | KY        |    142200 | NS      | $8968886.45   | 1.53%             |  |  |  | No            |                  2 | On Loan: No      |
| Kweichow Moutai Co Ltd                     | Kweichow Moutai Co Ltd                     | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | CN        |     43034 | NS      | $9062287.50   | 1.55%             |  |  |  | No            |                  2 | On Loan: No      |
| ICICI Bank Ltd                             | ICICI Bank Ltd                             | CUSIP: 000000000<br>LEI: R7RX8ER1V4666J8D1I38 | Long             | EC               | CORP              | IN        |   1314776 | NS      | $16960687.82  | 2.89%             |  |  |  | No            |                  2 | On Loan: No      |
| Nien Made Enterprise Co Ltd                | Nien Made Enterprise Co Ltd                | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | TW        |    605344 | NS      | $6349936.81   | 1.08%             |  |  |  | No            |                  2 | On Loan: No      |
| CSG NV                                     | CSG NV                                     | CUSIP: 000000000<br>LEI: 31570078IM9ILNPQUB16 | Long             | EC               | CORP              | NL        |    116153 | NS      | $3133522.68   | 0.53%             |  |  |  | No            |                  1 | On Loan: No      |
| LIG Nex1 Co Ltd                            | LIG Nex1 Co Ltd                            | CUSIP: 000000000<br>LEI: 988400VTP0QVY3OIY652 | Long             | EC               | CORP              | KR        |     16515 | NS      | $6814922.80   | 1.16%             |  |  |  | No            |                  2 | On Loan: No      |
| Bid Corp Ltd                               | Bid Corp Ltd                               | CUSIP: 000000000<br>LEI: 529900UO8SUMYHI6QJ53 | Long             | EC               | CORP              | ZA        |    782787 | NS      | $18854891.07  | 3.22%             |  |  |  | No            |                  1 | On Loan: No      |
| BBB Foods Inc                              | BBB Foods Inc                              | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | VG        |    169676 | NS      | $6001440.12   | 1.02%             |  |  |  | No            |                  1 | On Loan: No      |
| Credicorp Ltd                              | Credicorp Ltd                              | CUSIP: 000000000<br>LEI: 529900UYAEYQCQ2BKB17 | Long             | EC               | CORP              | BM        |     39124 | NS      | $13270078.32  | 2.26%             |  |  |  | No            |                  1 | On Loan: No      |
| XP Inc                                     | XP Inc                                     | CUSIP: 000000000<br>LEI: 5493008KDA8NBZRJST80 | Long             | EC               | CORP              | KY        |    551855 | NS      | $10507319.20  | 1.79%             |  |  |  | No            |                  1 | On Loan: No      |
| MakeMyTrip Ltd                             | MakeMyTrip Ltd                             | CUSIP: 000000000<br>LEI: 529900DNT8HNJ7RYUO60 | Long             | EC               | CORP              | MU        |    176566 | NS      | $6584146.14   | 1.12%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2026-04-15

**Name of Applicant:** THORNBURG INVESTMENT TRUST

**Signature:** Christopher Luckham

**Name of Signer:** Christopher Luckham

**Title:** Manager - Fund Admin