# EDGAR Filing Document

**Accession Number:** 0000783740
**File Stem:** 0001752724-25-177398
**Filing Date:** 2025-7
**Character Count:** 9947
**Document Hash:** 355f7372addcef5a351f7a10a4f774c9
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-25-177398.hdr.sgml**: 20250725

**ACCESSION NUMBER**: 0001752724-25-177398

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250531

**FILED AS OF DATE**: 20250725

**DATE AS OF CHANGE**: 20250725

**PERIOD START**: 20250531

**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:** 251148707

**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:** 2025-05-31

- **b. Date as of which information is reported:** 2025-05-31

**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:** $35967657.25

**Total Liabilities:** $941165.73

**Net Assets:** $35026491.52

**Cash Not Reported:** $875653.72

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000142779 | -0.90%               | 0.75%                | 1.73%                |
| Class ID C000142777 | -0.91%               | 0.66%                | 1.82%                |
| Class ID C000142776 | -0.82%               | 0.66%                | 1.72%                |
| Class ID C000142780 | -0.79%               | 0.72%                | 1.82%                |
| Class ID C000142778 | -0.78%               | 0.79%                | 1.79%                |
| Class ID C000142775 | -0.78%               | 0.71%                | 1.79%                |
| Class ID C000142782 | -0.78%               | 0.79%                | 1.80%                |
| Class ID C000195688 | -0.78%               | 0.79%                | 1.87%                |
| Class ID C000142781 | -0.78%               | 0.71%                | 1.88%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $194962.99               | $-1363645.41                               |
| Month 2  | $-5415.31                | $302329.40                                 |
| Month 3  | $-191.78                 | $1718526.50                                |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Exchange traded                                       | S+P 500 INDEX                                         | CUSIP: 000000000<br>LEI: N/A                  | N/A              | DE               |  | US        |         4 | NC      | $41620.00     | 0.12%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Growth Fund                                       | MFS Growth Fund                                       | CUSIP: 552985673<br>LEI: K4ZYIH3WSXKUSPKIPM59 | Long             | EC               | RF                | US        |     55401 | NS      | $11329454.19  | 32.35%            |  |  |  | No            |                  1 | On Loan: No      |
| Exchange traded                                       | S+P 500 INDEX                                         | CUSIP: 000000000<br>LEI: 549300CII6SLYGKNHA04 | N/A              | DE               |  | US        |         3 | NC      | $615.00       | 0.00%             |  |  |  | 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        |    284241 | NS      | $11042754.38  | 31.53%            |  |  |  | No            |                  1 | On Loan: No      |
| United States Treasury                                | U.S. Treasury Notes                                   | CUSIP: 91282CJB8<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |    220000 | PA      | $220425.39    | 0.63%             | 2025-09-30      | Fixed         | 5.00%                 | No            |                  2 | On Loan: No      |
| Chicago Mercantile Exchange                           | E-MINI RUSS 1000 VJUN25                               | CUSIP: 000000000<br>LEI: SNZ2OJLFK8MNNCLQOF39 | N/A              | DE               |  | US        |       -52 | NC      | $-51586.14    | -0.15%            |  |  |  | No            |                  1 | On Loan: No      |
| Chicago Mercantile Exchange                           | E-MINI RUSS 1000 GJUN25                               | CUSIP: 000000000<br>LEI: SNZ2OJLFK8MNNCLQOF39 | N/A              | DE               |  | US        |       -36 | NC      | $-531797.52   | -1.52%            |  |  |  | No            |                  1 | On Loan: No      |
| MFS Institutional Money Market Portfolio              | MFS Institutional Money Market Portfolio              | CUSIP: 55291X109<br>LEI: 5L2W638H85N8T1136O07 | Long             | EC               | RF                | US        |    831019 | NS      | $831019.36    | 2.37%             |  |  |  | No            |                  1 | On Loan: No      |
| United States Treasury                                | U.S. Treasury Notes                                   | CUSIP: 91282CHL8<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |    350000 | PA      | $350047.85    | 1.00%             | 2025-06-30      | Fixed         | 4.63%                 | No            |                  2 | On Loan: No      |
| ICE Futures U.S., Inc.                                | MSCI EAFE JUN25                                       | CUSIP: 000000000<br>LEI: 5493004R83R1LVX2IL36 | N/A              | DE               |  | US        |       -40 | NC      | $-289337.00   | -0.83%            |  |  |  | No            |                  1 | On Loan: No      |
| United States Treasury                                | U.S. Treasury Notes                                   | CUSIP: 91282CKH3<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |    350000 | PA      | $350836.72    | 1.00%             | 2026-03-31      | Fixed         | 4.50%                 | No            |                  2 | On Loan: No      |
| United States Treasury                                | U.S. Treasury Notes                                   | CUSIP: 91282CJS1<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |    220000 | PA      | $219950.59    | 0.63%             | 2025-12-31      | Fixed         | 4.25%                 | No            |                  2 | On Loan: No      |
| MFS Value Fund                                        | MFS Value Fund                                        | CUSIP: 55273H353<br>LEI: HV6C0RMURVKFUQ3UTB42 | Long             | EC               | RF                | US        |    211176 | NS      | $10615803.14  | 30.31%            |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2025-06-13

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

**Signature:** James Byrne

**Name of Signer:** James Byrne

**Title:** Assistant Treasurer