Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionDaiwa Securities Group Inc.
Latest Disclosed Ownership56,684 shares
Latest Disclosed Value $ 13,841,099
Daiwa Securities Group Inc. reports 13.24% decrease in ownership of MPC / Marathon Petroleum Corporation

On May 13, 2026 - Daiwa Securities Group Inc. filed a 13F-HR form disclosing ownership of 56,684 shares of Marathon Petroleum Corporation (MX:MPC) valued at $13,841,099 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 65,336 shares of Marathon Petroleum Corporation. This represents a change in shares of -13.24% 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)
2026-05-13 2026-03-31 13F MARATHON PETE COM 56585A102 56,684 -8,652 -13.24 13,841 138,310.00 0.0234
2026-02-10 2025-12-31 13F MARATHON PETE COM 56585A102 65,336 17,417 36.35 11 11.11 0.0339
2025-11-14 2025-09-30 13F MARATHON PETE COM 56585A102 47,919 1,545 3.33 9 28.57 0.0312
2025-08-14 2025-06-30 13F MARATHON PETE COM 56585A102 46,374 1,010 2.23 8 16.67 0.0284
2025-05-13 2025-03-31 13F MARATHON PETE COM 56585A102 45,364 2,266 5.26 7 0.00 0.0279
2025-02-07 2024-12-31 13F MARATHON PETE COM 56585A102 43,098 822 1.94 6 0.00 0.0268
2024-11-12 2024-09-30 13F MARATHON PETE COM 56585A102 42,276 1,662 4.09 7 -14.29 0.0318
2024-08-07 2024-06-30 13F MARATHON PETE COM 56585A102 40,614 2,264 5.90 7 0.00 0.0375
2024-05-02 2024-03-31 13F MARATHON PETE COM 56585A102 38,350 2,546 7.11 8 40.00 0.0436
2024-01-31 2023-12-31 13F MARATHON PETE COM 56585A102 35,804 -1,006 -2.73 5 0.00 0.0330
2023-11-01 2023-09-30 13F MARATHON PETE COM 56585A102 36,810 783 2.17 6 25.00 0.0397
2023-07-31 2023-06-30 13F MARATHON PETE COM 56585A102 36,027 -1,034 -2.79 4 0.00 0.0278
2023-05-02 2023-03-31 13F MARATHON PETE COM 56585A102 37,061 2,228 6.40 5 0.00 0.0347
2023-02-06 2022-12-31 13F MARATHON PETE COM 56585A102 34,833 -2,109 -5.71 4 -99.89 0.0311
2022-11-02 2022-09-30 13F MARATHON PETE COM 56585A102 36,942 108 0.29 3,669 21.17 0.0305
2022-08-09 2022-06-30 13F MARATHON PETE COM 56585A102 36,834 -663 -1.77 3,028 -5.55 0.0231
2022-04-29 2022-03-31 13F MARATHON PETE COM 56585A102 37,497 -1,739 -4.43 3,206 27.68 0.0148
2022-02-03 2021-12-31 13F MARATHON PETE COM 56585A102 39,236 2,581 7.04 2,511 10.81 0.0148
2021-11-05 2021-09-30 13F MARATHON PETE COM 56585A102 36,655 -6,266 -14.60 2,266 -12.61 0.0149
2021-08-06 2021-06-30 13F MARATHON PETE COM 56585A102 42,921 5,176 13.71 2,593 28.43 0.0175
2021-05-03 2021-03-31 13F MARATHON PETE COM 56585A102 37,745 700 1.89 2,019 31.79 0.0150
2021-02-04 2020-12-31 13F MARATHON PETE COM 56585A102 37,045 -10,275 -21.71 1,532 10.37 0.0118
2020-11-02 2020-09-30 13F MARATHON PETE COM 56585A102 47,320 -17,073 -26.51 1,388 -8.74 0.0126
2020-08-11 2020-06-30 13F MARATHON PETE COM 56585A102 64,393 0 0.00 1,521 0.00 0.0321
2020-05-14 2020-03-31 13F MARATHON PETE COM 56585A102 64,393 11,545 21.85 1,521 -52.23 0.0158
2020-01-31 2019-12-31 13F MARATHON PETE COM 56585A102 52,848 -3,641 -6.45 3,184 -7.23 0.0263
2019-11-04 2019-09-30 13F MARATHON PETE COM 56585A102 56,489 -6,570 -10.42 3,432 -2.61 0.0291
2019-07-24 2019-06-30 13F MARATHON PETE COM 56585A102 63,059 3,341 5.59 3,524 -1.40 0.0311
2019-04-26 2019-03-31 13F MARATHON PETE COM 56585A102 59,718 11,778 24.57 3,574 26.33 0.0312
2019-02-05 2018-12-31 13F MARATHON PETE COM 56585A102 47,940 13,551 39.41 2,829 2.87 0.0271
2018-11-01 2018-09-30 13F MARATHON PETE COM 56585A102 34,389 -18,420 -34.88 2,750 -25.78 0.0230
2018-07-30 2018-06-30 13F MARATHON PETE COM 56585A102 52,809 1,900 3.73 3,705 -0.46 0.0292
2018-05-02 2018-03-31 13F MARATHON PETE COM 56585A102 50,909 16,774 49.14 3,722 65.28 0.0298
2018-02-06 2017-12-31 13F MARATHON PETE COM 56585A102 34,135 849 2.55 2,252 20.62 0.0159
2017-11-02 2017-09-30 13F MARATHON PETE COM 56585A102 33,286 18,386 123.40 1,867 139.36 0.0128
2017-07-28 2017-06-30 13F MARATHON PETE COM 56585A102 14,900 550 3.83 780 7.59 0.0050
2017-05-02 2017-03-31 13F MARATHON PETE COM 56585A102 14,350 600 4.36 725 4.77 0.0046
2017-02-01 2016-12-31 13F MARATHON PETE COM 56585A102 13,750 550 4.17 692 29.10 0.0044
2017-01-10 2016-09-30 13F/A-1 MARATHON PETE COM 56585A102 13,200 -3,300 -20.00 536 -14.38 0.0032
2016-11-04 2016-09-30 13F MARATHON PETE COM 56585A102 13,200 536
2016-07-25 2016-06-30 13F MARATHON PETE COM 56585A102 16,500 600 3.77 626 5.92 0.0037
2016-05-12 2016-03-31 13F MARATHON PETE COM 56585A102 15,900 -34,400 -68.39 591 -77.34 0.0037
2016-02-04 2015-12-31 13F MARATHON PETE COM 56585A102 50,300 -6,500 -11.44 2,608 -0.91 0.0172
2015-11-10 2015-09-30 13F MARATHON PETE COM 56585A102 56,800 2,700 4.99 2,632 -7.00 0.0187
2015-08-05 2015-06-30 13F MARATHON PETE COM 56585A102 54,100 24,850 84.96 2,830 -5.51 0.0201
2015-05-12 2015-03-31 13F MARATHON PETE COM 56585A102 29,250 -27,500 -48.46 2,995 -41.53 0.0200
2015-02-13 2014-12-31 13F MARATHON PETE COM 56585A102 56,750 49,400 672.11 5,122 723.47 0.0362
2014-11-12 2014-09-30 13F MARATHON PETE COM 56585A102 7,350 -61,400 -89.31 622 -88.41 0.0047
2014-08-13 2014-06-30 13F/A-1 MARATHON PETE COM 56585A102 68,750 -15,800 -18.69 5,367 -27.07 0.0400
2014-08-13 2014-06-30 13F MARATHON PETE COM 56585A102 68,750 5,367
2014-05-14 2014-03-31 13F/A-1 MARATHON PETE COM 56585A102 84,550 74,000 7,359 0.0576
2014-05-15 2014-03-31 13F/A-2 MARATHON PETE COM 56585A102 84,550 74,000 701.42 7,359 661.01 0.0576
2014-05-13 2014-03-31 13F MARATHON PETE COM 56585A102 84,550 7,359
2014-02-13 2013-12-31 13F MARATHON PETE COM 56585A102 10,550 -1,000 -8.66 967 30.15 0.0082
2013-11-14 2013-09-30 13F MARATHON PETE COM 56585A102 11,550 -400 -3.35 743 -12.49 0.0059
2013-08-16 2013-06-30 13F/A-1 MARATHON PETE COM 56585A102 11,950 11,950 849 0.0064
2013-08-13 2013-06-30 13F MARATHON PETE COM 56585A102 11,950 849
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.