# MPLX LP

MPLX LP is a security (CUSIP 55336VBP4) tracked across SEC portfolio filings. 6 registered fund positions totaling $3.4M via N-PORT as of 2026-05-31.

## Summary

- Issuer: MPLX LP
- CUSIP: 55336VBP4
- Asset category: DBT
- 13F holders: 0
- N-PORT fund positions: 6
- N-PORT value: $3.4M
- N-PORT report: 2026-05-31

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Federated Hermes Corporate Bond Fund](https://search.stillhousedata.com/fund/S000009106) | Federated Hermes Investment Series Funds, Inc. | $2.0M | 21.01% |
| [BNY Mellon Core Plus Fund](https://search.stillhousedata.com/fund/S000059721) | BNY Mellon Absolute Insight Funds, Inc. | $1.0M | 4.13% |
| [GENERAL ELECTRIC RSP INCOME FUND](https://search.stillhousedata.com/fund/S000011837) | GENERAL ELECTRIC RSP INCOME FUND | $240K | 1.22% |
| [BlackRock Total Return Fund](https://search.stillhousedata.com/fund/S000004071) | BlackRock Bond Fund, Inc. | $94K | 0.05% |
| [ELFUN INCOME FUND](https://search.stillhousedata.com/fund/S000011831) | ELFUN INCOME FUND | $4K | 0.31% |
| [ELFUN DIVERSIFIED FUND](https://search.stillhousedata.com/fund/S000011823) | ELFUN DIVERSIFIED FUND | $2K | 0.10% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/55336VBP4.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.