Marathon Petroleum Corporation
US ˙ NYSE ˙ US56585A1025

SecurityMPC / Marathon Petroleum Corporation
InstitutionProShare Advisors LLC
Latest Disclosed Ownership52,067 shares
Latest Disclosed Value $ 12,713,719
ProShare Advisors LLC reports 20.60% decrease in ownership of MPC / Marathon Petroleum Corporation

On April 24, 2026 - ProShare Advisors LLC filed a 13F-HR form disclosing ownership of 52,067 shares of Marathon Petroleum Corporation (US:MPC) valued at $12,713,720 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 65,575 shares of Marathon Petroleum Corporation. This represents a change in shares of -20.60% during the quarter. The current value of the position is $13,912,823 USD.

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)
2026-04-24 2026-03-31 13F MARATHON PETE COM 56585A102 52,067 -13,508 -20.60 12,714 19.21 0.0188
2026-02-06 2025-12-31 13F MARATHON PETE COM 56585A102 65,575 3,320 5.33 10,664 -11.13 0.0188
2025-11-06 2025-09-30 13F MARATHON PETE COM 56585A102 62,255 -3,987 -6.02 11,999 9.05 0.0251
2025-08-07 2025-06-30 13F MARATHON PETE COM 56585A102 66,242 -618 -0.92 11,003 12.97 0.0220
2025-05-08 2025-03-31 13F MARATHON PETE COM 56585A102 66,860 -38 -0.06 9,741 4.37 0.0220
2025-02-14 2024-12-31 13F MARATHON PETE COM 56585A102 66,898 5,007 8.09 9,332 -7.44 0.0213
2024-11-14 2024-09-30 13F MARATHON PETE COM 56585A102 61,891 -7,853 -11.26 10,083 -16.67 0.0247
2024-08-13 2024-06-30 13F MARATHON PETE COM 56585A102 69,744 3,858 5.86 12,099 -8.87 0.0324
2024-05-08 2024-03-31 13F MARATHON PETE COM 56585A102 65,886 -8,402 -11.31 13,276 20.46 0.0353
2024-02-14 2023-12-31 13F MARATHON PETE COM 56585A102 74,288 -15,342 -17.12 11,021 -18.75 0.0337
2023-11-13 2023-09-30 13F MARATHON PETE COM 56585A102 89,630 -22,442 -20.02 13,565 3.80 0.0423
2023-08-10 2023-06-30 13F MARATHON PETE COM 56585A102 112,072 -9,137 -7.54 13,068 -20.04 0.0379
2023-05-26 2023-03-31 13F/A-1 MARATHON PETE COM 56585A102 121,209 15,924 15.12 16,343 33.36 0.0499
2023-05-12 2023-03-31 13F MARATHON PETE COM 56585A102 121,209 15,924 16,343 0.0520
2023-02-02 2022-12-31 13F MARATHON PETE COM 56585A102 105,285 -8,216 -7.24 12,254 8.69 0.0430
2022-11-07 2022-09-30 13F MARATHON PETE COM 56585A102 113,501 -25,447 -18.31 11,274 -1.30 0.0433
2022-08-01 2022-06-30 13F MARATHON PETE COM 56585A102 138,948 -72,273 -34.22 11,423 -36.75 0.0379
2022-05-10 2022-03-31 13F MARATHON PETE COM 56585A102 211,221 -6,552 -3.01 18,059 29.60 0.0388
2022-02-08 2021-12-31 13F MARATHON PETE COM 56585A102 217,773 25,656 13.35 13,934 17.34 0.0273
2021-11-12 2021-09-30 13F MARATHON PETE COM 56585A102 192,117 -9,331 -4.63 11,875 -2.43 0.0334
2021-08-13 2021-06-30 13F MARATHON PETE COM 56585A102 201,448 29,753 17.33 12,171 32.52 0.0356
2021-05-14 2021-03-31 13F MARATHON PETE COM 56585A102 171,695 14,950 9.54 9,184 41.66 0.0289
2021-02-09 2020-12-31 13F MARATHON PETE COM 56585A102 156,745 -9,237 -5.57 6,483 33.12 0.0241
2020-11-13 2020-09-30 13F MARATHON PETE COM 56585A102 165,982 11,058 7.14 4,870 -15.90 0.0225
2020-08-03 2020-06-30 13F MARATHON PETE COM 56585A102 154,924 9,157 6.28 5,791 68.20 0.0309
2020-05-15 2020-03-31 13F MARATHON PETE COM 56585A102 145,767 -41,876 -22.32 3,443 -69.54 0.0247
2020-02-12 2019-12-31 13F MARATHON PETE COM 56585A102 187,643 42,598 29.37 11,305 28.31 0.0523
2019-11-12 2019-09-30 13F MARATHON PETE COM 56585A102 145,045 37,261 34.57 8,811 46.29 0.0493
2019-08-13 2019-06-30 13F MARATHON PETE COM 56585A102 107,784 -12,739 -10.57 6,023 -16.50 0.0360
2019-05-15 2019-03-31 13F MARATHON PETE COM 56585A102 120,523 -17,435 -12.64 7,213 -11.40 0.0432
2019-02-14 2018-12-31 13F MARATHON PETE COM 56585A102 137,958 55,092 66.48 8,141 22.85 0.0570
2018-11-14 2018-09-30 13F MARATHON PETE COM 56585A102 82,866 -17,347 -17.31 6,627 -5.75 0.0450
2018-08-13 2018-06-30 13F MARATHON PETE COM 56585A102 100,213 -11,975 -10.67 7,031 -14.28 0.0471
2018-05-14 2018-03-31 13F MARATHON PETE COM 56585A102 112,188 -4,245 -3.65 8,202 6.77 0.0534
2018-02-14 2017-12-31 13F MARATHON PETE COM 56585A102 116,433 13,479 13.09 7,682 33.04 0.0533
2017-11-13 2017-09-30 13F MARATHON PETE COM 56585A102 102,954 7,818 8.22 5,774 15.99 0.0531
2017-08-11 2017-06-30 13F MARATHON PETE COM 56585A102 95,136 -2,381 -2.44 4,978 0.99 0.0496
2017-05-12 2017-03-31 13F/A-2 MARATHON PETE COM 56585A102 97,517 135 0.14 4,929 0.53 0.0516
2017-05-08 2017-03-31 13F/A-1 MARATHON PETE COM 56585A102 97,517 0 4,929 0.0515
2017-04-25 2017-03-31 13F MARATHON PETE COM 56585A102 97,517 4,929
2017-02-13 2016-12-31 13F MARATHON PETE COM 56585A102 97,382 10,286 11.81 4,903 38.70 0.0543
2016-11-10 2016-09-30 13F MARATHON PETE COM 56585A102 87,096 -37,994 -30.37 3,535 -25.55 0.0494
2016-08-12 2016-06-30 13F MARATHON PETE COM 56585A102 125,090 -15,611 -11.10 4,748 -9.23 0.0612
2016-05-06 2016-03-31 13F MARATHON PETE COM 56585A102 140,701 15,938 12.77 5,231 -19.12 0.0720
2016-02-05 2015-12-31 13F MARATHON PETE COM 56585A102 124,763 6,634 5.62 6,468 18.18 0.0783
2015-11-06 2015-09-30 13F MARATHON PETE COM 56585A102 118,129 6,580 5.90 5,473 -6.20 0.0769
2015-08-11 2015-06-30 13F MARATHON PETE COM 56585A102 111,549 46,066 70.35 5,835 -12.98 0.0807
2015-05-08 2015-03-31 13F MARATHON PETE COM 56585A102 65,483 65,483 0.00 6,705 0.0790
2015-01-30 2014-12-31 13F MARATHON PETE COM 56585A102 0 -59,363 -100.00 0 -100.00
2014-11-06 2014-09-30 13F MARATHON PETE COM 56585A102 59,363 -7,073 -10.65 5,026 -3.10 0.0666
2014-08-08 2014-06-30 13F MARATHON PETE COM 56585A102 66,436 -12,713 -16.06 5,187 -24.71 0.0672
2014-05-07 2014-03-31 13F MARATHON PETE COM 56585A102 79,149 7,367 10.26 6,889 4.62 0.0862
2014-02-04 2013-12-31 13F MARATHON PETE COM 56585A102 71,782 25,505 55.11 6,585 121.20 0.0981
2013-11-07 2013-09-30 13F MARATHON PETE COM 56585A102 46,277 -27,268 -37.08 2,977 -43.03 0.0707
2013-07-25 2013-06-30 13F MARATHON PETE COM 56585A102 73,545 73,545 5,226 0.1026
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.