Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionBoyd Watterson Asset Management Llc/oh
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Boyd Watterson Asset Management Llc/oh closes position in MPC / Marathon Petroleum Corporation

On June 20, 2013 - Boyd Watterson Asset Management Llc/oh filed a 13F-HR/A form disclosing ownership of 0 shares of Marathon Petroleum Corporation (MX:MPC) valued at $0 USD as of May 31, 2177. The entity filed a previous 13F-HR on April 27, 2026 disclosing 356 shares of Marathon Petroleum Corporation. This represents a change in shares of -100.00% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2013-06-20 2177-05-31 13F/A-1 Marathon Petroleum COM 56585A102 0 -356 -100.00 0 -100.00
2026-04-27 2026-03-31 13F Marathon Petroleum COM 56585A102 356 0 0.00 87 50.88 0.0267
2026-02-04 2025-12-31 13F Marathon Petroleum COM 56585A102 356 0 0.00 58 -16.18 0.0167
2025-11-05 2025-09-30 13F Marathon Petroleum COM 56585A102 356 -50 -12.32 69 1.49 0.0204
2025-08-01 2025-06-30 13F Marathon Petroleum COM 56585A102 406 0 0.00 67 13.56 0.0212
2025-05-06 2025-03-31 13F Marathon Petroleum COM 56585A102 406 0 0.00 59 5.36 0.0189
2025-02-03 2024-12-31 13F Marathon Petroleum COM 56585A102 406 0 0.00 57 -15.15 0.0157
2024-10-22 2024-09-30 13F Marathon Petroleum COM 56585A102 406 -30 -6.88 66 -12.00 0.0181
2024-08-14 2024-06-30 13F Marathon Petroleum COM 56585A102 436 0 0.00 76 -13.79 0.0216
2024-04-29 2024-03-31 13F Marathon Petroleum COM 56585A102 436 -165 -27.45 88 -2.25 0.0316
2024-02-02 2023-12-31 13F Marathon Petroleum COM 56585A102 601 0 0.00 89 -1.11 0.0353
2023-10-23 2023-09-30 13F Marathon Petroleum COM 56585A102 601 0 0.00 91 28.57 0.0399
2023-07-27 2023-06-30 13F Marathon Petroleum COM 56585A102 601 0 0.00 70 -13.58 0.0280
2023-04-19 2023-03-31 13F Marathon Petroleum COM 56585A102 601 0 0.00 81 17.39 0.0331
2023-01-18 2022-12-31 13F Marathon Petroleum COM 56585A102 601 601 70 0.0289
2020-04-20 2020-03-31 13F Marathon Petroleum COM 56585A102 0 -4,520 -100.00 0 -100.00
2020-01-16 2019-12-31 13F Marathon Petroleum COM 56585A102 4,520 -2,558 -36.14 272 -36.74 0.1788
2019-10-17 2019-09-30 13F Marathon Petroleum COM 56585A102 7,078 61 0.87 430 9.69 0.3011
2019-07-24 2019-06-30 13F Marathon Petroleum COM 56585A102 7,017 412 6.24 392 -0.76 0.2673
2019-04-09 2019-03-31 13F Marathon Petroleum COM 56585A102 6,605 203 3.17 395 4.50 0.2494
2019-01-16 2018-12-31 13F Marathon Petroleum COM 56585A102 6,402 -322 -4.79 378 -29.74 0.2759
2018-10-17 2018-09-30 13F Marathon Petroleum COM 56585A102 6,724 380 5.99 538 20.90 0.3075
2018-07-18 2018-06-30 13F Marathon Petroleum COM 56585A102 6,344 -5,635 -47.04 445 -49.20 0.2555
2018-04-19 2018-03-31 13F Marathon Petroleum COM 56585A102 11,979 5,803 93.96 876 115.23 0.4348
2018-01-11 2017-12-31 13F Marathon Petroleum COM 56585A102 6,176 -6,829 -52.51 407 -44.17 0.1964
2017-10-19 2017-09-30 13F Marathon Petroleum COM 56585A102 13,005 -133 -1.01 729 5.96 0.3603
2017-07-14 2017-06-30 13F Marathon Petroleum COM 56585A102 13,138 -4,364 -24.93 688 -22.26 0.3520
2017-04-24 2017-03-31 13F Marathon Petroleum COM 56585A102 17,502 5,396 44.57 885 45.08 0.4436
2017-01-13 2016-12-31 13F Marathon Petroleum COM 56585A102 12,106 -6,274 -34.13 610 -18.23 0.3233
2016-10-19 2016-09-30 13F Marathon Petroleum COM 056585A10 18,380 4,513 32.54 746 41.83 0.3657
2016-07-15 2016-06-30 13F Marathon Petroleum COM 056585A10 13,867 -3,975 -22.28 526 -20.66 0.2499
2016-04-15 2016-03-31 13F Marathon Petroleum COM 056585A10 17,842 11,596 185.65 663 104.63 0.3210
2016-01-25 2015-12-31 13F Marathon Petroleum COM 056585A10 6,246 300 5.05 324 17.82 0.1543
2015-10-14 2015-09-30 13F Marathon Petroleum COM 056585A10 5,946 -1,500 -20.15 275 -29.49 0.1173
2015-07-17 2015-06-30 13F Marathon Petroleum COM 056585A10 7,446 4,473 150.45 390 28.29 0.1524
2015-04-16 2015-03-31 13F Marathon Petroleum COM 056585A10 2,973 0 0.00 304 13.43 0.1220
2015-01-15 2014-12-31 13F Marathon Petroleum COM 056585A10 2,973 2,973 268 0.1145
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.