Marathon Petroleum Corp MARATHON PETRO is a security (CUSIP 56585AAF9) tracked across SEC portfolio filings. 6 registered fund positions totaling $6.0M via N-PORT as of 2026-05-31.
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| VANGUARD LONG-TERM BOND INDEX FUND | VANGUARD BOND INDEX FUNDS | $3.0M | 3.46% |
| BlackRock Core Bond Trust | BlackRock Core Bond Trust | $1.2M | 17.51% |
| Federated Hermes Corporate Bond Fund | Federated Hermes Investment Series Funds, Inc. | $776K | 7.98% |
| BlackRock Total Return Fund | BlackRock Bond Fund, Inc. | $614K | 0.35% |
| SIIT LONG DURATION FUND | SEI INSTITUTIONAL INVESTMENTS TRUST | $372K | 4.74% |
| VANGUARD CORE-PLUS BOND INDEX ETF | VANGUARD QUANTITATIVE FUNDS | $5K | 0.45% |