Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionMeeder Asset Management Inc
Latest Disclosed Ownership4,123 shares
Latest Disclosed Value $ 1,006,754
Meeder Asset Management Inc reports 3,096.12% increase in ownership of MPC / Marathon Petroleum Corporation

On May 7, 2026 - Meeder Asset Management Inc filed a 13F-HR form disclosing ownership of 4,123 shares of Marathon Petroleum Corporation (MX:MPC) valued at $1,006,754 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 129 shares of Marathon Petroleum Corporation. This represents a change in shares of 3,096.12% 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)
2026-05-07 2026-03-31 13F MARATHON PETE COM 56585A102 4,123 3,994 3,096.12 1,007 4,930.00 0.0280
2026-02-11 2025-12-31 13F MARATHON PETE COM 56585A102 129 -12 -8.51 21 -25.93 0.0011
2025-10-24 2025-09-30 13F MARATHON PETE COM 56585A102 141 2 1.44 27 17.39 0.0015
2025-08-07 2025-06-30 13F MARATHON PETE COM 56585A102 139 13 10.32 23 27.78 0.0014
2025-05-07 2025-03-31 13F MARATHON PETE COM 56585A102 126 126 18 0.0012
2024-05-07 2024-03-31 13F MARATHON PETROLEUM COM 56585A102 0 -7,737 -100.00 0 -100.00
2024-01-25 2023-12-31 13F MARATHON PETROLEUM COM 56585A102 7,737 3,725 92.85 1,148 88.96 0.0894
2023-11-13 2023-09-30 13F MARATHON PETE COM 56585A102 4,012 4,012 607 0.0479
2023-08-11 2023-06-30 13F MARATHON PETE COM 56585A102 0 -18,482 -100.00 0 -100.00
2023-05-15 2023-03-31 13F MARATHON PETE COM 56585A102 18,482 -49,114 -72.66 2,492 -68.34 0.1988
2023-02-14 2022-12-31 13F MARATHON PETE COM 56585A102 67,596 -35,164 -34.22 7,867 -22.93 0.6886
2022-11-14 2022-09-30 13F MARATHON PETE COM 56585A102 102,760 -4,842 -4.50 10,207 15.41 0.5885
2022-08-08 2022-06-30 13F MARATHON PETE COM 56585A102 107,602 -3,488 -3.14 8,844 -6.90 0.5133
2022-05-10 2022-03-31 13F MARATHON PETE COM 56585A102 111,090 4,473 4.20 9,499 39.24 0.3505
2022-05-10 2022-03-31 13F MARATHON PETE COM 56585A102 25,164 2,151
2022-02-11 2021-12-31 13F MARATHON PETE COMMON STOCKS 56585A102 106,617 100,217 1,565.89 6,822 1,622.73 0.6859
2021-11-08 2021-09-30 13F MARATHON PETE COM 56585A102 6,400 264 4.30 396 6.74 0.0208
2021-08-09 2021-06-30 13F MARATHON PETE COM 56585A102 6,136 1,032 20.22 371 35.90 0.0173
2021-04-28 2021-03-31 13F MARATHON PETE COM 56585A102 5,104 1,618 46.41 273 89.58 0.0140
2021-02-09 2020-12-31 13F MARATHON PETE COM 56585A102 3,486 676 24.06 144 75.61 0.0319
2020-11-02 2020-09-30 13F MARATHON PETE COM 56585A102 2,810 549 24.28 82 -3.53 0.0053
2020-08-11 2020-06-30 13F MARATHON PETE COM 56585A102 2,261 -35,263 -93.97 85 -90.40 0.0055
2020-05-15 2020-03-31 13F Marathon Petroleum Common Stock 56585A102 37,524 -50,033 -57.14 885 -83.22 0.0688
2020-02-13 2019-12-31 13F Marathon Petroleum Common Stock 56585A102 87,557 45,452 107.95 5,275 106.22 0.3222
2019-10-17 2019-09-30 13F Marathon Petroleum Common Stock 56585A102 42,105 31,389 292.92 2,558 327.05 0.1701
2019-08-05 2019-06-30 13F Marathon Petroleum Common Stock 56585A102 10,716 -116,636 -91.59 599 -92.14 0.0418
2019-04-16 2019-03-31 13F Marathon Petroleum Common Stock 56585A102 127,352 36,175 39.68 7,621 41.65 0.6018
2019-01-17 2018-12-31 13F Marathon Petroleum Common Stock 56585A102 91,177 14,311 18.62 5,380 -12.48 0.4798
2018-11-02 2018-09-30 13F Marathon Petroleum Common Stock 56585A102 76,866 -3,469 -4.32 6,147 -99.89 0.4612
2018-07-24 2018-06-30 13F Marathon Petroleum Common Stock 56585A102 80,335 9,373 13.21 5,636,303 108,541.15 0.4855
2018-05-03 2018-03-31 13F Marathon Petroleum Common Stock 56585A102 70,962 -670 -0.94 5,188 9.78 0.4816
2018-02-02 2017-12-31 13F Marathon Petroleum Common Stock 56585A102 71,632 -19,255 -21.19 4,726 -7.28 0.4016
2017-10-20 2017-09-30 13F Marathon Petroleum Common Stock 56585A102 90,887 -33,295 -26.81 5,097 -21.56 0.5551
2017-07-13 2017-06-30 13F Marathon Petroleum Common Stock 56585A102 124,182 29,561 31.24 6,498 35.88 0.6194
2017-05-12 2017-03-31 13F Marathon Petroleum Common Stock 56585A102 94,621 11,524 13.87 4,782 14.32 0.4280
2017-01-11 2016-12-31 13F Marathon Petroleum Common Stock 56585A102 83,097 52,529 171.84 4,183 237.34 0.4006
2016-10-19 2016-09-30 13F Marathon Petroleum Common Stock 56585A102 30,568 3,853 14.42 1,240 22.41 0.1052
2016-07-22 2016-06-30 13F Marathon Petroleum Common Stock 56585A102 26,715 -22,754 -46.00 1,013 -44.95 0.0948
2016-05-12 2016-03-31 13F Marathon Petroleum Common Stock 56585A102 49,469 -58,182 -54.05 1,840 -67.03 0.1730
2016-01-15 2015-12-31 13F Marathon Petroleum Common Stock 56585A102 107,651 -22,652 -17.38 5,580 -7.55 0.5038
2015-10-15 2015-09-30 13F Marathon Petroleum Common Stock 56585A102 130,303 78,899 153.49 6,036 124.39 0.5908
2015-07-20 2015-06-30 13F Marathon Petroleum Common Stock 56585A102 51,404 23,613 84.97 2,690 -5.45 0.2731
2015-04-29 2015-03-31 13F Marathon Petroleum Common Stock 56585A102 27,791 27,791 0.00 2,845 0.3050
2015-01-27 2014-12-31 13F Marathon Petroleum Common Stock 56585A102 0 -42,175 -100.00 0 -100.00
2014-10-15 2014-09-30 13F Marathon Petroleum Common Stock 56585A102 42,175 -92,815 -68.76 3,570 -62.78 0.5232
2013-07-16 2013-06-30 13F Marathon Petroleum Common Stock 56585A102 134,990 134,990 9,592 1.9039
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.