MPC Institutional Ownership & Shareholders
MARATHON PETROLEUM CORP (MPC) is currently held by 2,100 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $56.35B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of MPC tracked by InsiderSet, reporting ownership valued at approximately $6.65B in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $11.19B, representing an estimated gain of +68.34% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 51% of the total disclosed MPC value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Capital Management Llc, State Street Corp, and several other long-term asset managers with concentrated positions in MARATHON PETROLEUM CORP (MPC).
This page ranks the largest institutional MPC shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
2,100
Total Reported Value
$56.35B
Largest Holder
Blackrock, Inc.
Largest Position
$6.65B
Insider Transactions (90d)
7
Latest Filing Quarter
Q2 2026
New Institutional Positions
135
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.10% | 26,006,017 | $6,648,958,398 | $11,192,729,657 | +$4,543,771,259 | +68.34% | |
| Vanguard Capital Management Llc | 0.10% | 19,074,289 | $4,876,723,468 | $8,209,383,243 | +$3,332,659,775 | +68.34% | |
| State Street Corp | 0.14% | 18,471,905 | $4,722,711,951 | $7,950,123,193 | +$3,227,411,242 | +68.34% | |
| Vanguard Portfolio Management Llc | 0.18% | 15,631,265 | $3,996,445,522 | $6,727,540,143 | +$2,731,094,621 | +68.34% | |
| Geode Capital Management, Llc | 0.11% | 8,351,157 | $2,127,262,888 | $3,594,254,461 | +$1,466,991,573 | +68.96% | |
| Morgan Stanley | 0.08% | 5,887,382 | $1,505,227,534 | $2,533,870,339 | +$1,028,642,805 | +68.34% | |
| Raymond James Financial Inc | 0.40% | 5,684,963 | $1,453,474,692 | $2,446,751,226 | +$993,276,534 | +68.34% | |
| Fmr Llc | 0.06% | 5,419,718 | $1,385,659,271 | $2,332,592,430 | +$946,933,159 | +68.34% | |
| Bank Of New York Mellon Corp | 0.17% | 4,027,107 | $1,029,610,547 | $1,733,226,582 | +$703,616,035 | +68.34% | |
| Boston Partners | 0.80% | 3,515,417 | $905,824,428 | $1,513,000,323 | +$607,175,895 | +67.03% | |
| Wellington Management Group Llp | 0.14% | 3,252,153 | $831,477,956 | $1,399,694,130 | +$568,216,174 | +68.34% | |
| Northern Trust Corp | 0.09% | 3,126,059 | $799,239,505 | $1,345,424,533 | +$546,185,028 | +68.34% | |
| Dimensional Fund Advisors Lp | 0.14% | 3,056,082 | $781,452,353 | $1,315,307,132 | +$533,854,779 | +68.32% | |
| Goldman Sachs Group Inc | 0.08% | 2,884,591 | $737,503,289 | $1,241,499,120 | +$503,995,831 | +68.34% | |
| Jpmorgan Chase & Co | 0.04% | 2,736,206 | $709,279,688 | $1,177,635,700 | +$468,356,012 | +66.03% | |
| Charles Schwab Investment Management Inc | 0.09% | 2,622,511 | $670,497,388 | $1,128,702,509 | +$458,205,121 | +68.34% | |
| Norges Bank | 0.06% | 2,465,801 | $630,431,342 | $1,061,256,092 | +$430,824,750 | +68.34% | |
| Bank Of America Corp | 0.04% | 2,432,168 | $621,832,369 | $1,046,780,786 | +$424,948,417 | +68.34% | |
| Invesco Ltd. | 0.05% | 2,341,034 | $598,532,172 | $1,007,557,623 | +$409,025,451 | +68.34% | |
| Ameriprise Financial Inc | 0.11% | 2,030,778 | $519,537,399 | $874,026,543 | +$354,489,144 | +68.23% | |
| Ubs Group Ag | 0.07% | 1,842,485 | $471,068,140 | $792,987,119 | +$321,918,979 | +68.34% | |
| Price T Rowe Associates Inc | 0.05% | 1,839,897 | $470,407,000 | $791,873,270 | +$321,466,270 | +68.34% | |
| Principal Financial Group Inc | 0.23% | 1,125,230 | $444,938,915 | $484,287,740 | +$39,348,825 | +8.84% | |
| Vanguard Fiduciary Trust Co | 0.09% | 1,659,223 | $424,213,544 | $714,112,987 | +$289,899,443 | +68.34% | |
| Capital Wealth Planning, Llc | 2.02% | 1,577,970 | $403,439,711 | $679,142,508 | +$275,702,797 | +68.34% | |
| Allianz Asset Management Gmbh | 0.37% | 1,554,821 | $397,521,086 | $669,179,410 | +$271,658,324 | +68.34% | |
| Us Bancorp \De\ | 0.42% | 1,496,414 | $382,588,467 | $644,041,621 | +$261,453,154 | +68.34% | |
| Legal & General Group Plc | 0.08% | 1,489,205 | $380,745,042 | $640,938,940 | +$260,193,898 | +68.34% | |
| Lsv Asset Management | 0.67% | 1,444,352 | $369,277,000 | $621,634,657 | +$252,357,657 | +68.34% | |
| Pacer Advisors, Inc. | 0.83% | 1,252,598 | $320,252,000 | $539,105,653 | +$218,853,653 | +68.34% | |
| Two Sigma Investments, Lp | 0.24% | 1,239,241 | $316,836,746 | $533,356,934 | +$216,520,188 | +68.34% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.07% | 1,292,803 | $315,676,637 | $556,409,483 | +$240,732,846 | +76.26% | |
| Deutsche Bank Ag\ | 0.08% | 1,098,138 | $280,760,941 | $472,627,614 | +$191,866,673 | +68.34% | |
| Nuveen, Llc | 0.06% | 1,035,451 | $264,733,718 | $445,647,756 | +$180,914,038 | +68.34% | |
| Victory Capital Management Inc | 0.15% | 1,016,215 | $259,815,689 | $437,368,774 | +$177,553,085 | +68.34% | |
| Sumitomo Mitsui Trust Group, Inc. | 0.15% | 650,809 | $257,342,895 | $280,101,686 | +$22,758,791 | +8.84% | |
| Bnp Paribas Financial Markets | 0.13% | 964,443 | $246,579,142 | $415,086,623 | +$168,507,481 | +68.34% | |
| National Pension Service | 0.15% | 928,506 | $237,391,129 | $399,619,697 | +$162,228,568 | +68.34% | |
| Barclays Plc | 0.07% | 920,708 | $235,397,413 | $396,263,516 | +$160,866,103 | +68.34% | |
| Royal Bank Of Canada | 0.04% | 843,958 | $215,775,000 | $363,231,084 | +$147,456,084 | +68.34% | |
| Lord, Abbett & Co. Llc | 0.61% | 837,252 | $214,060,000 | $360,344,888 | +$146,284,888 | +68.34% | |
| Swiss National Bank | 0.11% | 830,666 | $212,376,376 | $357,510,340 | +$145,133,964 | +68.34% | |
| Aqr Capital Management Llc | 0.07% | 828,334 | $211,780,277 | $356,506,670 | +$144,726,393 | +68.34% | |
| Australiansuper Pty Ltd | 0.88% | 797,247 | $203,832,140 | $343,127,136 | +$139,294,996 | +68.34% | |
| American Century Companies Inc | 0.08% | 716,275 | $183,130,270 | $308,277,597 | +$125,147,327 | +68.34% | |
| Mitsubishi Ufj Asset Management Co., Ltd. | 0.10% | 711,745 | $181,971,844 | $306,327,931 | +$124,356,087 | +68.34% | |
| Vanguard Global Advisers, Llc | 0.08% | 696,456 | $178,062,906 | $299,747,698 | +$121,684,792 | +68.34% | |
| Wells Fargo & Company/Mn | 0.03% | 692,418 | $177,030,243 | $298,009,783 | +$120,979,540 | +68.34% | |
| Jones Financial Companies Lllp | 0.07% | 687,912 | $174,842,668 | $296,070,446 | +$121,227,778 | +69.34% | |
| Voya Investment Management Llc | 0.15% | 671,811 | $171,761,918 | $289,140,736 | +$117,378,818 | +68.34% |
Frequently asked questions about MPC
Who are the largest institutional holders of MPC?
The largest institutional holders of MPC reported in the latest SEC Form 13F filings include Blackrock, Inc., Vanguard Capital Management Llc, State Street Corp, Vanguard Portfolio Management Llc, and Geode Capital Management, Llc. InsiderSet ranks institutional holders by their latest reported MPC position.
What is MPC institutional ownership?
This page tracks MPC positions reported by institutional investment managers through SEC Form 13F. MARATHON PETROLEUM CORP (MPC) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own MPC?
InsiderSet currently tracks 2,100 institutional managers reporting MPC holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of MPC shareholders.
How much MPC stock do institutions own?
Institutional investment managers disclosed approximately $56.35B in MPC holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was MPC institutional ownership last updated?
The latest MPC institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional MPC holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its MPC position after the reporting date.
Are institutions buying or selling MPC?
Institutional buying and selling can be analyzed by comparing MPC positions across consecutive 13F reporting periods. InsiderSet's MPC Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View MPC ownership changes.
How has MPC institutional ownership changed over time?
InsiderSet tracks MPC institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.