# EDGAR Filing Document

**Accession Number:** 0000783740
**File Stem:** 0001410368-26-007055
**Filing Date:** 2026-1
**Character Count:** 9880
**Document Hash:** 7e77886576677055699eed13beb7b904
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001410368-26-007055.hdr.sgml**: 20260126

**ACCESSION NUMBER**: 0001410368-26-007055

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251130

**FILED AS OF DATE**: 20260126

**DATE AS OF CHANGE**: 20260126

**PERIOD START**: 20260531

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MFS SERIES TRUST X
- **CENTRAL INDEX KEY:** 0000783740

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1130

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-04492
- **FILM NUMBER:** 26558579

**BUSINESS ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 21ST FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 18006372929

**MAIL ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 21ST FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MFS GOVERNMENT MORTGAGE FUND
- **DATE OF NAME CHANGE:** 19930408

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MFS GOVERNMENT INCOME PLUS FUND
- **DATE OF NAME CHANGE:** 19930312

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MASSACHUSETTS MFS GOVERNMENT INCOME PLUS FUND
- **DATE OF NAME CHANGE:** 19921015

## Series and Classes Contracts Data

### MFS Managed Wealth Fund (Series ID: S000045806)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000142775 | A            | MNWAX           |
| C000142776 | B            | MNWBX           |
| C000142777 | C            | MNWCX           |
| C000142778 | I            | MNWIX           |
| C000142779 | R1           | MNWRX           |
| C000142780 | R2           | MNWSX           |
| C000142781 | R3           | MNWTX           |
| C000142782 | R4           | MNWUX           |
| C000195688 | R6           | MNWZX           |

## Form NPORT-P: Monthly Portfolio Investments Report

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

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

- **a. Name of Registrant:** MFS SERIES TRUST X

- **b. Investment Company Act file number:** 811-04492

- **c. CIK number of Registrant:** 0000783740

- **d. LEI of Registrant:** 5493001MUVNRNUPJY164

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

  - **Street Address 1:** 111 HUNTINGTON AVENUE

  - **City:** BOSTON

  - **State:** MA

  - **Foreign country:** US

  - **Zip / Postal Code:** 02199

  - **Telephone number:** 617-954-5000

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

- **a. Name of Series:** MFS Managed Wealth Fund

- **b. EDGAR series identifier (if any):** S000045806

- **c. LEI of Series:** 5493001FM265HSCY4362

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

- **a. Date of fiscal year-end:** 2026-05-31

- **b. Date as of which information is reported:** 2025-11-30

**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:** $38084993.84

**Total Liabilities:** $320713.02

**Net Assets:** $37764280.82

**Cash Not Reported:** $240224.32

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000142775 | 0.53%                | -0.52%               | 0.30%                |
| Class ID C000142776 | 0.48%                | -0.55%               | 0.24%                |
| Class ID C000142777 | 0.48%                | -0.56%               | 0.24%                |
| Class ID C000142778 | 0.60%                | -0.52%               | 0.38%                |
| Class ID C000142779 | 0.48%                | -0.55%               | 0.24%                |
| Class ID C000142780 | 0.46%                | -0.46%               | 0.23%                |
| Class ID C000142781 | 0.53%                | -0.53%               | 0.30%                |
| Class ID C000142782 | 0.60%                | -0.52%               | 0.38%                |
| Class ID C000195688 | 0.53%                | -0.45%               | 0.38%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $11053.82                | $553522.04                                 |
| Month 2  | $48544.77                | $-53073.52                                 |
| Month 3  | $2530.54                 | $190967.57                                 |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| MFS Value Fund                                        | MFS Value Fund                                        | CUSIP: 55273H353<br>LEI: HV6C0RMURVKFUQ3UTB42 | Long             | EC               | RF                | US        |    216446 | NS      | $11532265.47  | 30.54%            |  |  |  | No            |                  1 | On Loan: No      |
| MFS Institutional Money Market Portfolio              | MFS Institutional Money Market Portfolio              | CUSIP: 55291X109<br>LEI: 5L2W638H85N8T1136O07 | Long             | EC               | RF                | US        |   2918835 | NS      | $2919419.11   | 7.73%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Institutional Trust-MFS International Equity Fund | MFS Institutional Trust-MFS International Equity Fund | CUSIP: 552966806<br>LEI: DMEBH0UWWHA1KO5Z5N87 | Long             | EC               | RF                | US        |    279933 | NS      | $11376472.45  | 30.12%            |  |  |  | No            |                  1 | On Loan: No      |
| MFS Growth Fund                                       | MFS Growth Fund                                       | CUSIP: 552985673<br>LEI: K4ZYIH3WSXKUSPKIPM59 | Long             | EC               | RF                | US        |     49846 | NS      | $11289223.09  | 29.89%            |  |  |  | No            |                  1 | On Loan: No      |
| United States Treasury                                | U.S. Treasury Notes                                   | CUSIP: 91282CJS1<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |    220000 | PA      | $220073.66    | 0.58%             | 2025-12-31      | Fixed         | 4.25%                 | No            |                  2 | On Loan: No      |
| United States Treasury                                | U.S. Treasury Notes                                   | CUSIP: 91282CKH3<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |    350000 | PA      | $350738.83    | 0.93%             | 2026-03-31      | Fixed         | 4.50%                 | No            |                  2 | On Loan: No      |
| United States Treasury                                | U.S. Treasury Notes                                   | CUSIP: 91282CKY6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |    100000 | PA      | $100489.84    | 0.27%             | 2026-06-30      | Fixed         | 4.63%                 | No            |                  2 | On Loan: No      |
| ICE Futures U.S., Inc.                                | MSCI EAFE DEC25                                       | CUSIP: 000000000<br>LEI: 5493004R83R1LVX2IL36 | N/A              | DE               |  | US        |       -35 | NC      | $-77439.25    | -0.21%            |  |  |  | No            |                  1 | On Loan: No      |
| Exchange traded                                       | S+P 500 INDEX                                         | CUSIP: 000000000<br>LEI: N/A                  | N/A              | DE               |  | US        |         4 | NC      | $24120.00     | 0.06%             |  |  |  | No            |                  2 | On Loan: No      |
| Exchange traded                                       | S+P 500 INDEX                                         | CUSIP: 000000000<br>LEI: N/A                  | N/A              | DE               |  | US        |         4 | NC      | $13720.00     | 0.04%             |  |  |  | No            |                  1 | On Loan: No      |
| Chicago Mercantile Exchange                           | E-MINI RUSS 1000 GDEC25                               | CUSIP: 000000000<br>LEI: SNZ2OJLFK8MNNCLQOF39 | N/A              | DE               |  | US        |       -13 | NC      | $-75603.41    | -0.20%            |  |  |  | No            |                  1 | On Loan: No      |
| Chicago Mercantile Exchange                           | E-MINI RUSS 1000 VDEC25                               | CUSIP: 000000000<br>LEI: SNZ2OJLFK8MNNCLQOF39 | N/A              | DE               |  | US        |       -49 | NC      | $-153128.43   | -0.41%            |  |  |  | No            |                  1 | On Loan: No      |
| Exchange traded                                       | S+P 500 INDEX                                         | CUSIP: 000000000<br>LEI: N/A                  | N/A              | DE               |  | US        |         5 | NC      | $48285.00     | 0.13%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2025-12-29

**Name of Applicant:** MFS SERIES TRUST X

**Signature:** James Byrne

**Name of Signer:** James Byrne

**Title:** Assistant Treasurer