# MPLX LP

MPLX LP is a security (CUSIP 55336VAP5) tracked across SEC portfolio filings. 5 registered fund positions totaling $8.5M via N-PORT as of 2026-05-31.

## Summary

- Issuer: MPLX LP
- CUSIP: 55336VAP5
- Asset category: DBT
- 13F holders: 0
- N-PORT fund positions: 5
- N-PORT value: $8.5M
- N-PORT report: 2026-05-31

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Federated Hermes Total Return Bond Fund](https://search.stillhousedata.com/fund/S000010897) | Federated Hermes Total Return Series, Inc. | $3.8M | 2.52% |
| Guggenheim Strategic Opportunities Fund | Guggenheim Strategic Opportunities Fund | $3.6M | 15.03% |
| [Insight Select Income Fund](https://search.stillhousedata.com/fund/S000000000) | Insight Select Income Fund | $454K | 24.35% |
| [BlackRock Total Return Fund](https://search.stillhousedata.com/fund/S000004071) | BlackRock Bond Fund, Inc. | $367K | 0.21% |
| [Advantage CoreAlpha Bond Master Portfolio](https://search.stillhousedata.com/fund/S000062381) | Master Investment Portfolio II | $275K | 4.09% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/55336VAP5.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.