MARATHON PETROLEUM CORP (MPC) Top Institutional Shareholders
MARATHON PETROLEUM CORP (MPC) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $50.83B in MPC holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of MPC tracked by InsiderSet, reporting ownership valued at approximately $5.96B in its March 31, 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 $5.97B, representing an estimated gain of +0.18% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 55% 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
1,848
Total Reported Value
$50.83B
Largest Holder
Blackrock, Inc.
Largest Position
$5.96B
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
174
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% | 24,394,842 | $5,956,732,436 | $5,967,222,302 | +$10,489,866 | +0.18% | |
| Vanguard Capital Management Llc | 0.12% | 19,170,094 | $4,680,953,552 | $4,689,196,693 | +$8,243,141 | +0.18% | |
| State Street Corp | 0.16% | 19,025,020 | $4,645,529,384 | $4,653,710,142 | +$8,180,758 | +0.18% | |
| Vanguard Portfolio Management Llc | 0.20% | 15,672,113 | $3,826,816,553 | $3,833,555,561 | +$6,739,008 | +0.18% | |
| Geode Capital Management, Llc | 0.12% | 7,821,524 | $1,902,584,033 | $1,913,222,986 | +$10,638,953 | +0.56% | |
| Morgan Stanley | 0.09% | 6,073,543 | $1,483,038,202 | $1,485,649,353 | +$2,611,151 | +0.18% | |
| Raymond James Financial Inc | 0.44% | 5,773,769 | $1,409,881,043 | $1,412,321,635 | +$2,440,592 | +0.17% | |
| Boston Partners | 1.44% | 5,649,204 | $1,378,883,125 | $1,381,851,790 | +$2,968,665 | +0.22% | |
| Wellington Management Group Llp | 0.26% | 5,637,187 | $1,376,488,321 | $1,378,912,312 | +$2,423,991 | +0.18% | |
| Fmr Llc | 0.06% | 4,911,081 | $1,199,187,849 | $1,201,299,523 | +$2,111,674 | +0.18% | |
| Bank Of New York Mellon Corp | 0.18% | 3,953,318 | $965,321,454 | $967,021,116 | +$1,699,662 | +0.18% | |
| Northern Trust Corp | 0.10% | 3,176,869 | $775,727,874 | $777,093,926 | +$1,366,052 | +0.18% | |
| Dimensional Fund Advisors Lp | 0.16% | 3,087,982 | $754,105,389 | $755,351,277 | +$1,245,888 | +0.17% | |
| Invesco Ltd. | 0.11% | 2,828,645 | $690,698,514 | $691,914,853 | +$1,216,339 | +0.18% | |
| Harris Associates L P | 0.92% | 2,805,972 | $685,162,133 | $686,368,811 | +$1,206,678 | +0.18% | |
| Goldman Sachs Group Inc | 0.09% | 2,754,843 | $672,677,579 | $673,862,146 | +$1,184,567 | +0.18% | |
| Charles Schwab Investment Management Inc | 0.10% | 2,729,389 | $666,462,206 | $667,635,843 | +$1,173,637 | +0.18% | |
| Bank Of America Corp | 0.05% | 2,595,084 | $633,667,731 | $634,783,497 | +$1,115,766 | +0.18% | |
| Ameriprise Financial Inc | 0.13% | 2,224,185 | $543,107,730 | $544,057,893 | +$950,163 | +0.17% | |
| Amundi | 0.13% | 1,905,379 | $465,255,444 | $466,074,757 | +$819,313 | +0.18% | |
| Allianz Asset Management Gmbh | 0.48% | 1,699,648 | $415,020,049 | $415,750,897 | +$730,848 | +0.18% | |
| Ubs Group Ag | 0.07% | 1,674,455 | $408,868,423 | $409,588,438 | +$720,015 | +0.18% | |
| Legal & General Group Plc | 0.09% | 1,661,076 | $405,601,533 | $406,315,800 | +$714,267 | +0.18% | |
| Vanguard Fiduciary Trust Co | 0.10% | 1,660,886 | $405,555,143 | $406,269,324 | +$714,181 | +0.18% | |
| Capital Wealth Planning, Llc | 2.21% | 1,641,315 | $400,776,379 | $401,482,062 | +$705,683 | +0.18% | |
| Us Bancorp \De\ | 0.46% | 1,548,556 | $378,126,526 | $378,792,283 | +$665,757 | +0.18% | |
| Two Sigma Investments, Lp | 0.31% | 1,524,286 | $372,200,155 | $372,855,598 | +$655,443 | +0.18% | |
| Principal Financial Group Inc | 0.20% | 1,519,520 | $371,036,619 | $371,689,787 | +$653,168 | +0.18% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.07% | 1,292,803 | $315,676,637 | $316,232,542 | +$555,905 | +0.18% | |
| Canada Pension Plan Investment Board | 0.18% | 1,121,573 | $273,865,695 | $274,347,972 | +$482,277 | +0.18% | |
| Deutsche Bank Ag\ | 0.09% | 1,118,979 | $273,232,293 | $273,713,453 | +$481,160 | +0.18% | |
| Nuveen, Llc | 0.07% | 984,658 | $240,433,791 | $240,857,193 | +$423,402 | +0.18% | |
| National Pension Service | 0.17% | 922,880 | $225,348,838 | $225,745,677 | +$396,839 | +0.18% | |
| Swiss National Bank | 0.12% | 882,166 | $215,407,294 | $215,786,625 | +$379,331 | +0.18% | |
| Royal Bank Of Canada | 0.04% | 858,218 | $209,559,000 | $209,928,705 | +$369,705 | +0.18% | |
| Barclays Plc | 0.07% | 847,725 | $206,997,491 | $207,362,012 | +$364,521 | +0.18% | |
| Wells Fargo & Company/Mn | 0.04% | 822,854 | $200,924,505 | $201,278,317 | +$353,812 | +0.18% | |
| Vanguard Global Advisers, Llc | 0.09% | 701,104 | $171,195,575 | $171,497,049 | +$301,474 | +0.18% | |
| Mitsubishi Ufj Asset Management Co., Ltd. | 0.11% | 674,813 | $164,775,838 | $165,066,008 | +$290,170 | +0.18% | |
| Voya Investment Management Llc | 0.16% | 648,617 | $158,379,299 | $158,658,204 | +$278,905 | +0.18% | |
| Sumitomo Mitsui Trust Group, Inc. | 0.10% | 643,815 | $157,206,747 | $157,483,587 | +$276,840 | +0.18% | |
| Jones Financial Companies Lllp | 0.08% | 621,765 | $156,294,011 | $152,089,937 | -$4,204,074 | -2.69% | |
| Rhumbline Advisers | 0.13% | 618,835 | $151,107,013 | $151,373,229 | +$266,216 | +0.18% | |
| Fifth Third Bancorp | 0.27% | 597,811 | $145,973,406 | $146,230,549 | +$257,143 | +0.18% | |
| Bnp Paribas Financial Markets | 0.10% | 591,959 | $144,544,549 | $144,799,091 | +$254,542 | +0.18% | |
| Vanguard Asset Management, Ltd | 0.12% | 568,369 | $138,784,342 | $139,028,741 | +$244,399 | +0.18% | |
| Mariner, Llc | 0.16% | 553,551 | $135,227,916 | $135,404,110 | +$176,194 | +0.13% | |
| Panagora Asset Management Inc | 0.50% | 551,934 | $134,771,244 | $135,008,576 | +$237,332 | +0.18% | |
| Citigroup Inc | 0.08% | 538,558 | $131,505,146 | $131,736,672 | +$231,526 | +0.18% | |
| California Public Employees Retirement System | 0.08% | 536,842 | $131,086,080 | $131,316,922 | +$230,842 | +0.18% |
Frequently asked questions about MPC
Who owns the most MPC stock?
The largest holders of MPC are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for MARATHON PETROLEUM CORP (MPC).
Is MPC widely held by superinvestors?
Many widely followed stocks like MPC appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly MPC is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.