# MFS SERIES TRUST X

MFS SERIES TRUST X (CIK 783740) is an SEC-registered fund company with 17 reporting fund series and $143.7B in net assets as of 2026-05-31.

## Registrant

- CIK: 783740
- File number: 811-04492
- LEI: 5493001MUVNRNUPJY164
- Address: 111 HUNTINGTON AVENUE, BOSTON, US-MA, 02199
- Phone: 617-954-5000
- Net assets: $143.7B
- Total assets: $144.3B
- Fund series: 17
- Latest report: 2026-05-31

## Fund series (17)

| Series | Net assets |
| --- | --- |
| [MFS International Diversification Fund](https://search.stillhousedata.com/fund/S000002515) | $44.6B |
| [MFS International Intrinsic Value Fund](https://search.stillhousedata.com/fund/S000002517) | $25.0B |
| [MFS International Growth Fund](https://search.stillhousedata.com/fund/S000002516) | $23.1B |
| [MFS Emerging Markets Equity Fund](https://search.stillhousedata.com/fund/S000002512) | $10.3B |
| [MFS Emerging Markets Debt Fund](https://search.stillhousedata.com/fund/S000002511) | $7.6B |
| [MFS International Large Cap Value Fund](https://search.stillhousedata.com/fund/S000068882) | $7.4B |
| [MFS Growth Allocation Fund](https://search.stillhousedata.com/fund/S000002514) | $6.8B |
| [MFS Moderate Allocation Fund](https://search.stillhousedata.com/fund/S000002507) | $6.4B |
| [MFS Conservative Allocation Fund](https://search.stillhousedata.com/fund/S000002510) | $3.6B |
| [MFS Aggressive Growth Allocation Fund](https://search.stillhousedata.com/fund/S000002506) | $3.1B |
| [MFS Blended Research Mid Cap Equity Fund](https://search.stillhousedata.com/fund/S000054892) | $2.9B |
| [MFS Global Opportunistic Bond Fund](https://search.stillhousedata.com/fund/S000028956) | $1.0B |
| [MFS Blended Research Growth Equity Fund](https://search.stillhousedata.com/fund/S000050658) | $656.3M |
| [MFS Emerging Markets Debt Local Currency Fund](https://search.stillhousedata.com/fund/S000033795) | $564.8M |
| [MFS Blended Research Value Equity Fund](https://search.stillhousedata.com/fund/S000050660) | $331.3M |
| [MFS Blended Research Small Cap Equity Fund](https://search.stillhousedata.com/fund/S000050659) | $326.5M |
| [MFS Managed Wealth Fund](https://search.stillhousedata.com/fund/S000045806) | $35.6M |

## Largest reported holdings (across all series)

| Holding | Value |
| --- | --- |
| [MFS Research Bond Fund](https://search.stillhousedata.com/security/55274K603) | $537.5M |
| [MFS Inflation Adjusted Bond Fund](https://search.stillhousedata.com/security/55274K884) | $360.1M |
| [MFS Ltd Maturity Fund](https://search.stillhousedata.com/security/55274K801) | $358.1M |
| [MFS Government Securities Fund](https://search.stillhousedata.com/security/552982712) | $357.0M |
| [MFS Global Opportunistic Bond Fund](https://search.stillhousedata.com/security/552743882) | $252.2M |
| [MFS Value Fund](https://search.stillhousedata.com/security/55273H353) | $214.8M |
| [MFS Growth Fund](https://search.stillhousedata.com/security/552985673) | $191.1M |
| [MFS Research Fund](https://search.stillhousedata.com/security/552981391) | $190.6M |
| [MFS Mid Cap Growth Fund](https://search.stillhousedata.com/security/552987554) | $146.6M |
| [MFS Mid Cap Value Fund](https://search.stillhousedata.com/security/55273W475) | $144.7M |
| [MFS High Income Fund](https://search.stillhousedata.com/security/552984684) | $143.6M |
| [MFS Research International Fund](https://search.stillhousedata.com/security/55273H361) | $135.1M |
| [MFS Emerging Markets Debt Fund](https://search.stillhousedata.com/security/552746364) | $72.2M |
| [MFS Emerging Markets Debt Local Currency Fund](https://search.stillhousedata.com/security/552746323) | $71.9M |
| [MFS Global Real Estate Fund](https://search.stillhousedata.com/security/552982720) | $71.7M |

## More

- [CIK 783740 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=783740&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/registrant/783740.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.