# Marathon Petroleum Corp MARATHON PETRO

Marathon Petroleum Corp MARATHON PETRO is a security (CUSIP 56585AAH5) tracked across SEC portfolio filings. 6 registered fund positions totaling $572K via N-PORT as of 2026-05-31.

## Summary

- Issuer: Marathon Petroleum Corp
- Class: MARATHON PETRO
- CUSIP: 56585AAH5
- Asset category: DBT
- 13F holders: 0
- N-PORT fund positions: 6
- N-PORT value: $572K
- N-PORT report: 2026-05-31

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $170K | 0.03% |
| [BlackRock Total Return Fund](https://search.stillhousedata.com/fund/S000004071) | BlackRock Bond Fund, Inc. | $170K | 0.10% |
| [MFS Core Bond Fund](https://search.stillhousedata.com/fund/S000076470) | MFS SERIES TRUST XII | $71K | 21.11% |
| [JPMorgan Core Bond Trust](https://search.stillhousedata.com/fund/S000007337) | JPMorgan Institutional Trust | $57K | 0.12% |
| [UBS U.S. Allocation Fund](https://search.stillhousedata.com/fund/S000002487) | UBS INVESTMENT TRUST | $52K | 2.27% |
| [Federated Hermes Managed Volatility Fund II](https://search.stillhousedata.com/fund/S000009746) | Federated Hermes Insurance Series | $51K | 3.00% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/56585AAH5.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.