# MFS Corporate Bond Fund

MFS Corporate Bond Fund is a registered fund series of MFS Series Trust IX (series S000002492). Net assets $4.4B as of 2026-04-30.

## Profile

- Series ID: S000002492
- Registrant: MFS Series Trust IX
- LEI: 4YECUOR03M3ILWFMIX10
- Net assets: $4.4B
- Total assets: $4.4B
- As of: 2026-04-30

## Advisers

- [MASSACHUSETTS FINANCIAL SERVICES COMPANY (Advisor)](https://search.stillhousedata.com/firm/110045)

## Top holdings (200 reported)

_Showing 15 of 200 holdings by value._

| Holding | Ticker | Value | % of fund |
| --- | --- | --- | --- |
| [MFS Institutional Money Market Portfolio](https://search.stillhousedata.com/security/55291X109) | — | $77.3M | 176.43% |
| [UBS Group AG](https://search.stillhousedata.com/security/902613AA6) | — | $33.9M | 77.30% |
| [JPMorgan Chase & Co.](https://search.stillhousedata.com/security/46647PCR5) | — | $33.1M | 75.62% |
| [Boeing Co. (The)](https://search.stillhousedata.com/security/097023CW3) | — | $32.6M | 74.39% |
| [Charles Schwab Corp. (The)](https://search.stillhousedata.com/security/808513CL7) | — | $27.0M | 61.67% |
| [Bermuda](https://search.stillhousedata.com/security/085209AJ3) | — | $25.7M | 58.61% |
| [Morgan Stanley](https://search.stillhousedata.com/security/61748UAT9) | — | $25.3M | 57.68% |
| [Sumitomo Mitsui Financial Group, Inc.](https://search.stillhousedata.com/security/86562MCE8) | — | $25.1M | 57.34% |
| [UBS Group AG](https://search.stillhousedata.com/security/902613BQ0) | — | $23.7M | 54.06% |
| [CaixaBank SA](https://search.stillhousedata.com/security/12803RAC8) | — | $23.5M | 53.54% |
| [American Homes 4 Rent LP](https://search.stillhousedata.com/security/02666TAJ6) | — | $22.1M | 50.46% |
| [AIB Group plc](https://search.stillhousedata.com/security/00135TAD6) | — | $22.1M | 50.38% |
| [Spire, Inc.](https://search.stillhousedata.com/security/84857LAF8) | — | $21.7M | 49.41% |
| [NXP BV](https://search.stillhousedata.com/security/62954HBH0) | — | $21.6M | 49.33% |
| [Mars, Inc.](https://search.stillhousedata.com/security/571676AZ8) | — | $20.1M | 45.75% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-04-30 | $4.4B |
| 2026-01-31 | $4.5B |
| 2025-10-31 | $4.6B |
| 2025-07-31 | $4.5B |
| 2025-04-30 | $4.5B |
| 2025-01-31 | $4.6B |
| 2024-10-31 | $4.6B |
| 2024-07-31 | $4.5B |

## More

- [Registrant: MFS Series Trust IX](https://search.stillhousedata.com/registrant/63075)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/fund/S000002492.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.