# MPLX LP MPLX 6.1 04/01/56

MPLX LP MPLX 6.1 04/01/56 is a security (CUSIP 55336VCF5) tracked across SEC portfolio filings. 6 registered fund positions totaling $6.0M via N-PORT as of 2026-05-31.

## Summary

- Issuer: MPLX LP
- Class: MPLX 6.1 04/01/56
- CUSIP: 55336VCF5
- Asset category: DBT
- 13F holders: 0
- N-PORT fund positions: 6
- N-PORT value: $6.0M
- N-PORT report: 2026-05-31

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [BNY Mellon Bond Fund](https://search.stillhousedata.com/fund/S000000375) | BNY MELLON FUNDS TRUST | $2.9M | 24.27% |
| [BlackRock Balanced Fund, Inc.](https://search.stillhousedata.com/fund/S000002175) | BlackRock Balanced Fund, Inc. | $1.1M | 5.94% |
| [Select Bond Portfolio](https://search.stillhousedata.com/fund/S000000047) | NORTHWESTERN MUTUAL SERIES FUND INC | $762K | 2.69% |
| [Advantage CoreAlpha Bond Master Portfolio](https://search.stillhousedata.com/fund/S000062381) | Master Investment Portfolio II | $510K | 7.59% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $486K | 0.08% |
| [BlackRock Balanced Portfolio](https://search.stillhousedata.com/fund/S000003863) | BlackRock Series Fund, Inc. | $306K | 6.58% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/55336VCF5.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.