Marathon Petroleum Corporation bonds MPC
Who owns Marathon Petroleum Corporation's debt and what their own filings say it is worth. Bond prices and yields are fund-reported marks (SEC Form N-PORT) as of Jul 2026; they lag the market by about two months. MPC stock page.
Every bond funds hold
Each bond's latest fund-reported mark. Price per 100 of face value; yield to maturity from price, coupon and maturity; spread over the matched-maturity Treasury for US-dollar bonds.
| Bond | Coupon | Maturity | Ccy | Price | Yield | Spread | Funds | Held | As of |
|---|---|---|---|---|---|---|---|---|---|
| 56585ABC5 | 5.125% fixed | 2026-12-15 | USD | 100.11 | 4.81% | 103 bp | 5 | $27.7M | Jul 2026 |
| 56585ABD3 | 3.8% fixed | 2028-04-01 | USD | 98.61 | 4.67% | 51 bp | 15 | $23.1M | Jul 2026 |
| 56585ABK7 | 5.15% fixed | 2030-03-01 | USD | 100.69 | 4.94% | 66 bp | 26 | $156.7M | Jul 2026 |
| 56585ABL5 | 5.7% fixed | 2035-03-01 | USD | 101.00 | 5.55% | 102 bp | 11 | $57.5M | Jul 2026 |
| 56585AAF9 | 6.5% fixed | 2041-03-01 | USD | 104.54 | 6.03% | 119 bp | 14 | $44.2M | Jul 2026 |
| 56585AAH5 | 4.75% fixed | 2044-09-15 | USD | 84.11 | 6.22% | 121 bp | 15 | $9.6M | Jul 2026 |
| 56585AAM4 | 5.85% fixed | 2045-12-15 | USD | 92.62 | 6.53% | 145 bp | 3 | $4.9M | Jul 2026 |
| 56585ABE1 | 4.5% fixed | 2048-04-01 | USD | 78.21 | 6.37% | 126 bp | 7 | $2.7M | Jul 2026 |
| 56585AAJ1 | 5% fixed | 2054-09-15 | USD | 82.30 | 6.36% | 126 bp | 4 | $827K | Jul 2026 |
Spread history
Median spread of the US-dollar bonds over Treasuries, month-ends with complete filings. Fund-reported.
Price history
Median fund-marked price across the bonds, per 100 of face value.
By month
Funds file on staggered quarter-ends, so each month-end is marked by the funds that reported for it; the amount held moves with which funds filed, not only with buying and selling.
| Month-end | Bonds | Held | Median price | USD yield | USD spread | Most funds on one bond |
|---|---|---|---|---|---|---|
| Jul 2026 | 9 | $327.3M | 98.61 | 6.13% | 120 bp | 26 |
| Jun 2026 | 9 | $671.3M | 98.70 | 5.82% | 104 bp | 33 |
| May 2026 | 9 | $257.9M | 98.78 | 5.81% | 97 bp | 23 |
| Apr 2026 | 9 | $325.8M | 98.82 | 5.90% | 121 bp | 25 |
| Mar 2026 | 9 | $677.2M | 98.79 | 5.98% | 134 bp | 34 |
| Feb 2026 | 9 | $262.2M | 100.39 | 5.68% | 114 bp | 21 |
| Jan 2026 | 9 | $331.2M | 99.53 | 5.89% | 127 bp | 26 |
| Dec 2025 | 9 | $677.2M | 99.46 | 5.95% | 136 bp | 34 |
| Nov 2025 | 9 | $279.0M | 99.31 | 5.76% | 132 bp | 22 |
| Oct 2025 | 9 | $385.9M | 98.98 | 5.76% | 135 bp | 26 |
| Sep 2025 | 9 | $573.4M | 98.98 | 5.74% | 123 bp | 33 |
| Aug 2025 | 9 | $254.3M | 99.00 | 5.99% | 119 bp | 23 |
| Jul 2025 | 9 | $385.0M | 98.25 | 6.07% | 130 bp | 29 |
Who holds the debt
Fund series in their latest quarterly N-PORT report, largest first, with the change in face value against each fund's own previous report. Names as reported in the filings. 45 added, 25 cut, 7 new holders and 13 exits in the latest quarter.
| Fund series | Report | Face value | Value | Change in face value |
|---|---|---|---|---|
| VANGUARD TOTAL BOND MARKET II INDEX FUND VANGUARD BOND INDEX FUNDS | 2026-06-30 | $121.9M | $120.1M | $0 |
| VANGUARD SHORT-TERM INVESTMENT-GRADE FUND VANGUARD FIXED INCOME SECURITIES FUNDS | 2026-07-31 | $110.5M | $111.0M | $0 |
| VANGUARD TOTAL BOND MARKET INDEX FUND VANGUARD BOND INDEX FUNDS | 2026-06-30 | $84.5M | $82.4M | $1.7M |
| VANGUARD INSTITUTIONAL INTERMEDIATE-TERM BOND FUND VANGUARD MALVERN FUNDS | 2026-06-30 | $68.0M | $69.4M | $0 |
| PIMCO Enhanced Short Maturity Active Exchange-Traded Fund PIMCO ETF Trust | 2026-06-30 | $61.9M | $62.0M | $751K |
| VANGUARD INTERMEDIATE-TERM CORPORATE BOND INDEX FUND VANGUARD SCOTTSDALE FUNDS | 2026-05-31 | $54.1M | $55.7M | $5.1M |
| VANGUARD INTERMEDIATE-TERM INVESTMENT-GRADE FUND VANGUARD FIXED INCOME SECURITIES FUNDS | 2026-07-31 | $50.0M | $50.5M | $0 |
| VANGUARD SHORT-TERM CORPORATE BOND INDEX FUND VANGUARD SCOTTSDALE FUNDS | 2026-05-31 | $32.4M | $32.9M | $2.4M |
| iShares iBoxx $ Investment Grade Corporate Bond ETF iShares Trust | 2026-05-31 | $31.6M | $31.9M | $2.8M |
| iShares Core U.S. Aggregate Bond ETF iShares Trust | 2026-05-31 | $24.1M | $23.3M | -$1.2M |
| PGIM Short-Term Corporate Bond Fund Prudential Short-Term Corporate Bond Fund, Inc. | 2026-06-30 | $22.7M | $22.8M | $0 |
| DFA Investment Grade Portfolio DFA INVESTMENT DIMENSIONS GROUP INC | 2026-07-31 | $22.4M | $22.7M | $0 |
| PIMCO Short Asset Portfolio PIMCO FUNDS | 2026-06-30 | $22.4M | $22.4M | $0 |
| Baird Core Plus Bond Fund Baird Funds Inc | 2026-06-30 | $22.4M | $22.1M | $0 |
| VANGUARD INTERMEDIATE-TERM BOND INDEX FUND VANGUARD BOND INDEX FUNDS | 2026-06-30 | $21.0M | $21.5M | $565K |
| VANGUARD SHORT-TERM BOND INDEX FUND VANGUARD BOND INDEX FUNDS | 2026-06-30 | $18.6M | $18.7M | $730K |
| Fidelity U.S. Bond Index Fund Fidelity Salem Street Trust | 2026-05-31 | $18.9M | $18.4M | $0 |
| Baird Intermediate Bond Fund Baird Funds Inc | 2026-06-30 | $18.0M | $18.2M | $0 |
| Nuveen Core Bond Fund TIAA-CREF Funds | 2026-06-30 | $17.8M | $17.2M | -$1.0M |
| AST PGIM Fixed Income Central Portfolio Advanced Series Trust | 2026-06-30 | $17.1M | $16.8M | $0 |
| AST Multi-Sector Fixed Income Portfolio Advanced Series Trust | 2026-06-30 | $17.6M | $16.4M | $0 |
| Baird Aggregate Bond Fund Baird Funds Inc | 2026-06-30 | $16.1M | $16.1M | $0 |
| VANGUARD CORE BOND FUND VANGUARD MALVERN FUNDS | 2026-06-30 | $15.7M | $15.9M | $0 |
| VANGUARD LONG-TERM CORPORATE BOND INDEX FUND VANGUARD SCOTTSDALE FUNDS | 2026-05-31 | $13.2M | $13.1M | -$2.6M |
| College Retirement Equities Fund - Core Bond Account College Retirement Equities Fund | 2026-06-30 | $13.9M | $13.0M | -$5.1M |
Largest exits in the latest quarter (fund held the bonds in its previous report, none now): Guggenheim Strategic Opportunities Fund ($6.6M), BNY Mellon Core Plus Fund ($4.0M), VOYA INTERMEDIATE BOND FUND ($3.1M), Multi-Manager Total Return Bond Strategies Fund ($1.4M), BNY Mellon Core Plus ETF ($1.3M), Six Circles Tax Aware Ultra Short Duration Fund ($1.0M), MFS Global Opportunistic Bond Fund ($512K), VALUE LINE CAPITAL APPRECIATION FUND INC ($500K), MFS Diversified Income Fund ($428K), Goldman Sachs Income Fund ($50K).
ETFs holding these bonds
From each ETF's own latest N-PORT report: the issuer's bonds as a share of the ETF's net assets. A holdings list, not a recommendation.
| ETF | Report | Bonds | Face value | Value | % of net assets |
|---|---|---|---|---|---|
| BND VANGUARD TOTAL BOND MARKET INDEX FUND | 2026-06-30 | 7 | $84.5M | $82.4M | 0.02% |
| MINT PIMCO Enhanced Short Maturity Active Exchange-Traded Fund | 2026-06-30 | 1 | $61.9M | $62.0M | 0.38% |
| VCIT VANGUARD INTERMEDIATE-TERM CORPORATE BOND INDEX FUND | 2026-05-31 | 1 | $54.1M | $55.7M | 0.08% |
| VCSH VANGUARD SHORT-TERM CORPORATE BOND INDEX FUND | 2026-05-31 | 2 | $32.4M | $32.9M | 0.07% |
| LQD iShares iBoxx $ Investment Grade Corporate Bond ETF | 2026-05-31 | 4 | $31.6M | $31.9M | 0.11% |
| AGG iShares Core U.S. Aggregate Bond ETF | 2026-05-31 | 7 | $24.1M | $23.3M | 0.02% |
| BIV VANGUARD INTERMEDIATE-TERM BOND INDEX FUND | 2026-06-30 | 1 | $21.0M | $21.5M | 0.04% |
| BSV VANGUARD SHORT-TERM BOND INDEX FUND | 2026-06-30 | 2 | $18.6M | $18.7M | 0.03% |
| VCLT VANGUARD LONG-TERM CORPORATE BOND INDEX FUND | 2026-05-31 | 3 | $13.2M | $13.1M | 0.14% |
| DFCF Dimensional Core Fixed Income ETF | 2026-07-31 | 3 | $11.8M | $12.1M | 0.11% |
| USIG iShares Broad USD Investment Grade Corporate Bond ETF | 2026-05-31 | 8 | $11.8M | $11.5M | 0.07% |
| IBDR iShares iBonds Dec 2026 Term Corporate ETF | 2026-07-31 | 1 | $11.1M | $11.1M | 0.33% |
| IGSB iShares 1-5 Year Investment Grade Corporate Bond ETF | 2026-05-31 | 2 | $9.9M | $9.9M | 0.05% |
| DFSD Dimensional Short-Duration Fixed Income ETF | 2026-07-31 | 1 | $9.1M | $9.1M | 0.13% |
| BSCU Invesco BulletShares 2030 Corporate Bond ETF | 2026-05-31 | 1 | $7.4M | $7.6M | 0.30% |
Default risk, three ways
Stock market: distance-to-default
Distance-to-default 6.75: safer than 64% of companies (71th percentile in Energy). Market-implied, prices to 2026-10-16, balance sheet 2026-06-30.
| Equity value | $133.22B |
| Debt barrier (short-term + ½ long-term debt) | $17.47B |
| Equity volatility (1 year) | 35.7% |
| Asset value / asset volatility (solved) | $149.96B / 31.7% |
| Risk-free rate (1-year Treasury) | 4.28% |
Bond market: priced-in odds
A 120 bp spread prices in about 2.0% a year of default odds (spread ÷ (1 − 40% recovery)). Fund-reported marks as of Jul 2026; the spread also pays for liquidity and risk premium, so this overstates actual defaults.
Accounts: Altman Z
Altman Z'' = 3.33 (latest balance sheet). A fundamentals cross-check; see methods for the variant used.
The stock side: 13F filings
What institutions report holding in MPC's stock and options. Options are reported at the value of the underlying shares, not the premium paid; 13F lists long positions only, lags 45 days after quarter-end, and does not show whether puts hedge a stock position.
| Quarter-end | Stock holders | Stock value | Put managers | Puts (underlying value) | Call managers | Calls (underlying value) | Convertible holders |
|---|---|---|---|---|---|---|---|
| 2026-09-30 filings still arriving | 368 | $914.9M | 3 | $29.6M | 1 | $435K | 0 |
| 2026-06-30 | 1,925 | $53.89B | 31 | $543.3M | 37 | $807.8M | 0 |
| 2026-03-31 | 1,864 | $42.53B | 34 | $569.7M | 37 | $828.2M | 0 |
| 2025-12-31 | 1,650 | $35.27B | 31 | $429.8M | 35 | $456.4M | 0 |
| 2025-09-30 | 1,630 | $41.43B | 37 | $528.0M | 40 | $718.1M | 0 |
| 2025-06-30 | 1,539 | $37.66B | 35 | $421.9M | 39 | $680.5M | 0 |
Officials trading MPC bonds
| Trade date | Official | Type | Description | Amount | Filing |
|---|---|---|---|---|---|
| 2023-06-28 | Ro Khanna | sale | Marathon Petroleum Corp | $1,001 - $15,000 | filing |
Sources: fund holdings and fund-reported marks from SEC Form N-PORT (published about 60 days after each month-end); 13F filings; House and Senate periodic transaction reports and OGE Form 278-T; Treasury yields from FRED. Findings from filings, not advice. How each number is computed.