# MPLX LP

MPLX LP is a security (CUSIP 55336VCE8) tracked across SEC portfolio filings. 13 registered fund positions totaling $39.2M via N-PORT as of 2026-05-31.

## Summary

- Issuer: MPLX LP
- CUSIP: 55336VCE8
- Asset category: DBT
- 13F holders: 0
- N-PORT fund positions: 13
- N-PORT value: $39.2M
- N-PORT report: 2026-05-31

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Allspring Core Plus Bond Fund](https://search.stillhousedata.com/fund/S000007418) | ALLSPRING FUNDS TRUST | $10.7M | 9.79% |
| [AB GLOBAL BOND FUND, INC.](https://search.stillhousedata.com/fund/S000010128) | AB GLOBAL BOND FUND, INC. | $10.4M | 15.55% |
| [AB Core Bond Portfolio](https://search.stillhousedata.com/fund/S000011057) | BERNSTEIN SANFORD C FUND INC | $6.1M | 13.62% |
| [Six Circles Global Bond Fund](https://search.stillhousedata.com/fund/S000068181) | SIX CIRCLES TRUST | $2.9M | 1.68% |
| [DoubleLine Core Fixed Income Fund](https://search.stillhousedata.com/fund/S000028164) | DoubleLine Funds Trust | $2.5M | 3.69% |
| [Select Bond Portfolio](https://search.stillhousedata.com/fund/S000000047) | NORTHWESTERN MUTUAL SERIES FUND INC | $1.6M | 5.74% |
| [Oakmark Bond Fund](https://search.stillhousedata.com/fund/S000068760) | HARRIS ASSOCIATES INVESTMENT TRUST | $1.5M | 59.72% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $1.1M | 0.18% |
| [Corporate Bond Portfolio](https://search.stillhousedata.com/fund/S000004118) | MORGAN STANLEY INSTITUTIONAL FUND TRUST | $789K | 51.03% |
| [Core Fixed Income Fund](https://search.stillhousedata.com/fund/S000008437) | MORGAN STANLEY PATHWAY FUNDS | $746K | 4.08% |
| [VOYA INTERMEDIATE BOND PORTFOLIO](https://search.stillhousedata.com/fund/S000008760) | Voya Intermediate Bond Portfolio | $450K | 4.94% |
| [Allspring Core Plus ETF](https://search.stillhousedata.com/fund/S000088477) | ALLSPRING EXCHANGE-TRADED FUNDS TRUST | $336K | 8.09% |
| [RiverNorth/DoubleLine Strategic Income Fund](https://search.stillhousedata.com/fund/S000030798) | RIVERNORTH FUNDS | $107K | 1.07% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/55336VCE8.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.