MARATHON PETE CORP (MPC)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
Institutions report 219,218,857 shares against 280,824,763 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $6.6B | 26,006,017 | 0.10% | 8q | +6.6%+$411.9M |
| VANGUARD CAPITAL MANAGEMENT LLC | $4.9B | 19,074,289 | 0.10% | 2q | HELD |
| STATE STREET CORP | $4.7B | 18,471,905 | 0.14% | 31q | -2.9%-$141.4M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $4.0B | 15,631,265 | 0.18% | 2q | HELD |
| GEODE CAPITAL MANAGEMENT, LLC | $2.1B | 8,351,157 | 0.11% | 31q | +6.8%+$134.9M |
| MORGAN STANLEY | $1.5B | 5,887,382 | 0.08% | 35q | -3.1%-$47.6M |
| RAYMOND JAMES FINANCIAL INC | $1.5B | 5,684,963 | 0.39% | 7q | -1.5%-$22.7M |
| FMR LLC | $1.4B | 5,419,718 | 0.06% | 31q | +10.4%+$130.0M |
| Bank of New York Mellon Corp | $1.0B | 4,027,107 | 0.17% | 31q | +1.9%+$18.9M |
| Boston Partners | $905.8M | 3,515,417 | 0.80% | 31q | -37.8%-$549.8M |
| WELLINGTON MANAGEMENT GROUP LLP | $831.5M | 3,252,153 | 0.14% | 31q | -42.3%-$609.8M |
| NORTHERN TRUST CORP | $799.2M | 3,126,059 | 0.09% | 31q | -1.6%-$13.0M |
| DIMENSIONAL FUND ADVISORS LP | $781.5M | 3,056,082 | 0.14% | 31q | -1.0%-$8.2M |
| GOLDMAN SACHS GROUP INC | $774.5M incl. $37.0M options CALL+PUT | 2,884,591 | 0.07% | 31q | +4.7%+$34.8M |
| JPMORGAN CHASE & CO | $717.1M incl. $7.8M options CALL | 2,736,206 | 0.04% | 31q | -20.4%-$183.3M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $670.5M | 2,622,511 | 0.09% | 31q | -3.9%-$27.3M |
| NORGES BANK | $630.4M | 2,465,801 | 0.06% | 32q | -15.1%-$112.1M |
| BANK OF AMERICA CORP /DE/ | $621.8M | 2,432,168 | 0.04% | 31q | -6.3%-$41.7M |
| Invesco Ltd. | $598.5M | 2,341,034 | 0.05% | 31q | -17.2%-$124.7M |
| Amundi | $572.2M | 2,237,930 | 0.14% | 21q | +17.5%+$85.0M |
| AMERIPRISE FINANCIAL INC | $519.5M | 2,030,778 | 0.11% | 31q | -8.7%-$49.5M |
| UBS Group AG | $498.0M incl. $26.9M options CALL+PUT | 1,842,485 | 0.06% | 31q | +10.0%+$45.4M |
| PRICE T ROWE ASSOCIATES INC /MD/ | $470.4M | 1,839,897 | 0.05% | 31q | +43.4%+$142.4M |
| VANGUARD FIDUCIARY TRUST CO | $424.2M | 1,659,223 | 0.09% | 2q | HELD |
| Allianz Asset Management GmbH | $408.8M incl. $11.3M options CALL+PUT | 1,554,821 | 0.33% | 40q | -8.5%-$38.1M |
| Capital Wealth Planning, LLC | $403.4M | 1,577,970 | 2.02% | 19q | -3.9%-$16.2M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $385.7M | 1,508,489 | 0.07% | 31q | +16.7%+$55.1M |
| US BANCORP \DE\ | $382.6M | 1,496,414 | 0.42% | 31q | -3.4%-$13.3M |
| Legal & General Group Plc | $380.7M | 1,489,205 | 0.08% | 31q | -10.3%-$43.9M |
| LSV ASSET MANAGEMENT | $369.3M | 1,444,352 | 0.67% | 31q | +12.7%+$41.6M |
| PRINCIPAL FINANCIAL GROUP INC | $356.5M | 1,394,274 | 0.18% | 31q | -8.2%-$32.0M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $337.5M incl. $310.3M options CALL+PUT | 106,292 | 0.03% | 31q | +9.4%+$29.0M |
| TWO SIGMA INVESTMENTS, LP | $335.2M incl. $18.4M options CALL+PUT | 1,239,241 | 0.24% | 7q | -18.7%-$77.1M |
| Pacer Advisors, Inc. | $320.3M | 1,252,598 | 0.82% | 25q | -6.4%-$21.9M |
| CITADEL ADVISORS LLC | $292.6M incl. $187.2M options CALL+PUT | 412,252 | 0.03% | 31q | +104.0%+$149.2M |
| DEUTSCHE BANK AG\ | $280.8M | 1,098,138 | 0.08% | 34q | -1.9%-$5.3M |
| BNP PARIBAS FINANCIAL MARKETS | $278.9M incl. $32.3M options CALL+PUT | 964,443 | 0.10% | 31q | +62.9%+$107.7M |
| Nuveen, LLC | $264.7M | 1,035,451 | 0.06% | 6q | +5.2%+$13.0M |
| VICTORY CAPITAL MANAGEMENT INC | $259.8M | 1,016,215 | 0.15% | 31q | +140.4%+$151.7M |
| ROYAL BANK OF CANADA | $241.6M incl. $25.8M options CALL | 843,958 | 0.04% | 31q | -1.7%-$4.1M |
| National Pension Service | $237.4M | 928,506 | 0.15% | 31q | +0.6%+$1.4M |
| BARCLAYS PLC | $235.4M | 920,708 | 0.05% | 31q | +8.6%+$18.7M |
| LORD, ABBETT & CO. LLC | $214.1M | 837,252 | 0.61% | 31q | -8.8%-$20.6M |
| Swiss National Bank | $212.4M | 830,666 | 0.11% | 31q | -5.8%-$13.2M |
| AQR CAPITAL MANAGEMENT LLC | $211.8M | 828,334 | 0.07% | 31q | +91.5%+$101.2M |
| AustralianSuper Pty Ltd | $203.8M | 797,247 | 0.88% | 13q | +62.9%+$78.7M |
| WELLS FARGO & COMPANY/MN | $191.9M incl. $14.9M options CALL | 692,418 | 0.03% | 31q | -15.9%-$36.1M |
| JANE STREET GROUP, LLC | $190.5M incl. $184.8M options CALL+PUT | 22,062 | 0.02% | 31q | -22.5%-$55.3M |
| AMERICAN CENTURY COMPANIES INC | $183.1M | 716,275 | 0.08% | 25q | +363.8%+$143.6M |
| Mitsubishi UFJ Asset Management Co., Ltd. | $182.0M | 711,745 | 0.10% | 31q | +5.5%+$9.4M |
| Vanguard Global Advisers, LLC | $178.1M | 696,456 | 0.08% | 2q | -0.7%-$1.2M |
| JONES FINANCIAL COMPANIES LLLP | $174.8M | 687,912 | 0.07% | 29q | +10.6%+$16.8M |
| VOYA INVESTMENT MANAGEMENT LLC | $171.8M | 671,811 | 0.15% | 31q | +3.6%+$5.9M |
| Squarepoint Ops LLC | $162.9M incl. $21.2M options CALL+PUT | 554,045 | 0.18% | 24q | +50.0%+$54.3M |
| Sumitomo Mitsui Trust Group, Inc. | $161.7M | 632,538 | 0.09% | 31q | -1.8%-$2.9M |
| VANGUARD ASSET MANAGEMENT, Ltd | $161.6M | 632,097 | 0.11% | 2q | +11.2%+$16.3M |
| CITIGROUP INC | $157.5M incl. $16.0M options CALL+PUT | 553,625 | 0.05% | 31q | +2.8%+$4.3M |
| RHUMBLINE ADVISERS | $157.4M | 615,535 | 0.12% | 31q | -0.5%-$843.7K |
| California Public Employees Retirement System | $157.1M | 614,359 | 0.09% | 31q | +14.4%+$19.8M |
| FIFTH THIRD BANCORP | $152.2M | 595,156 | 0.25% | 31q | HELD |
| HSBC HOLDINGS PLC | $151.4M incl. $11.7M options CALL+PUT | 545,377 | 0.06% | 31q | +11.5%+$15.6M |
| PANAGORA ASSET MANAGEMENT INC | $148.8M | 581,908 | 0.46% | 31q | +5.4%+$7.7M |
| IMC-Chicago, LLC | $145.5M CALL+PUT | options only | 0.03% | 19q | OPTIONS |
| Mariner, LLC | $143.6M | 559,173 | 0.15% | 31q | +1.0%+$1.4M |
| MILLENNIUM MANAGEMENT LLC | $132.0M incl. $15.7M options CALL+PUT | 454,885 | 0.05% | 31q | +5.3%+$6.7M |
| CANADA PENSION PLAN INVESTMENT BOARD | $130.8M | 511,495 | 0.07% | 31q | -54.4%-$156.0M |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $128.8M | 503,816 | 0.12% | 31q | +44.5%+$39.6M |
| BANK OF MONTREAL /CAN/ | $123.7M | 483,814 | 0.04% | 31q | -8.5%-$11.4M |
| FEDERATED HERMES, INC. | $120.1M | 469,785 | 0.17% | 31q | +21.3%+$21.1M |
| LPL Financial LLC | $112.9M | 441,653 | 0.03% | 31q | +4.1%+$4.4M |
| Thrivent Financial for Lutherans | $112.1M | 438,578 | 0.19% | 31q | HELD |
| NATIXIS ADVISORS, LLC | $109.7M | 429,184 | 0.12% | 31q | +8.8%+$8.9M |
| FRANKLIN RESOURCES INC | $108.6M | 424,897 | 0.02% | 31q | +6.8%+$6.9M |
| Empyrean Capital Partners, LP | $101.1M | 395,600 | 3.34% | 6q | -0.6%-$639.2K |
| LOS ANGELES CAPITAL MANAGEMENT LLC | $98.0M | 383,151 | 0.36% | 22q | -23.6%-$30.3M |
| ACADIAN ASSET MANAGEMENT LLC | $95.9M | 375,026 | 0.11% | 25q | -29.3%-$39.8M |
| Robeco Institutional Asset Management B.V. | $93.5M | 365,555 | 0.11% | 38q | +3.7%+$3.3M |
| ENVESTNET ASSET MANAGEMENT INC | $91.9M | 359,389 | 0.02% | 31q | -1.7%-$1.6M |
| ALLIANCEBERNSTEIN L.P. | $90.5M | 370,777 | 0.03% | 31q | HELD |
| Bridgewater Associates, LP | $89.3M | 349,224 | 0.37% | 5q | +351.9%+$69.5M |
| SG Americas Securities, LLC | $87.7M incl. $742.0K options CALL | 340,285 | 0.05% | 31q | +127.0%+$49.1M |
| PNC Financial Services Group, Inc. | $84.6M | 330,999 | 0.04% | 31q | -3.8%-$3.4M |
| Russell Investments Group, Ltd. | $83.4M | 325,282 | 0.07% | 31q | -1.8%-$1.5M |
| Man Group plc | $75.1M | 293,849 | 0.12% | 12q | +106.6%+$38.8M |
| Calamos Advisors LLC | $74.4M | 290,934 | 0.25% | 31q | -8.8%-$7.2M |
| Merewether Investment Management, LP | $73.8M | 288,592 | 1.39% | 2q | -7.1%-$5.6M |
| AVIVA PLC | $69.7M | 272,489 | 0.10% | 31q | +0.7%+$477.6K |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | $67.1M | 262,567 | 0.31% | 31q | -5.2%-$3.7M |
| Quantinno Capital Management LP | $66.9M | 261,554 | 0.08% | 17q | +28.2%+$14.7M |
| LAZARD ASSET MANAGEMENT LLC | $65.1M | 254,813 | 0.10% | new | NEW |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | $64.1M | 250,813 | 0.11% | 31q | -6.8%-$4.7M |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM | $62.6M | 244,918 | 0.12% | 31q | -4.8%-$3.1M |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | $60.1M | 235,160 | 0.08% | 31q | -1.7%-$1.0M |
| PRUDENTIAL FINANCIAL INC | $59.9M | 234,107 | 0.07% | 33q | +5.5%+$3.1M |
| Rockefeller Capital Management L.P. | $59.0M | 230,883 | 0.09% | 31q | -7.8%-$5.0M |
| HARRIS ASSOCIATES L P | $58.6M | 229,011 | 0.08% | 6q | -91.8%-$658.9M |
| HM PAYSON & CO | $58.1M | 227,433 | 0.77% | 30q | -7.2%-$4.5M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $57.1M | 223,151 | 0.03% | 4q | -45.6%-$47.9M |
| ARS Investment Partners, LLC | $56.5M | 220,952 | 2.47% | 23q | +33.4%+$14.1M |
| Empowered Funds, LLC | $56.2M | 219,714 | 0.30% | 17q | +60.3%+$21.1M |
Q2 2026 in brief
In Q2 2026, 1,967 managers that file Form 13F reported holding Marathon Pete Corp (MPC), $57.5B in all, or about 78% of the shares outstanding. 175 managers opened a position and 122 sold out completely, against 1,914 holders the quarter before. Largest holders: Blackrock, Inc., Vanguard Capital Management Llc and State Street Corp. Largest new positions: Lazard Asset Management Llc ($65.1M), Hrt Financial Lp ($44.4M) and Arbejdsmarkedets Tillaegspension ($26.7M).
Q2 2026 is the latest quarter whose 13F deadline has passed. A 13F shows long US stock positions at quarter end, filed up to 45 days later; an adviser and a sub-adviser can both report the same shares.
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-10-27 | 13G/A | BlackRock, Inc. | 7.9% |
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-10-29 | 2026-10-28 | Directors or officers departed or appointed | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-17 | Benson Molly R | Chief Legal Ofc & Corp Sec | Sold | 17,196 | $6.2M ×3 |
| 2026-08-12 | Henschen Michael A II | Ex VP, Refining | Sold | 6,011 | $2.1M |
| 2026-06-04 | Henschen Michael A II | Ex VP, Refining | Sold | 6,336 | $1.7M ×2 |
| 2026-08-13 | Lyon Shawn M | SVP Log & Storage, MPLX GP LLC | Sold | 2,500 | $875.0K |
| 2026-08-31 | Lyon Shawn M | SVP Log & Storage, MPLX GP LLC | Sold | 1,000 | $375.8K |
| 2026-05-13 | Hessling Ricky D. | Chief Commercial Officer | Sold | 1,000 | $250.0K |
| 2026-08-27 | Brzezinski Erin M | VP and Controller | Sold | 570 | $206.8K |
| 2026-08-28 | Lyon Shawn M | SVP Log & Storage, MPLX GP LLC | Sold | 425 | $156.6K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 890 | $3.5B | 8,850,923 | 184 | 226 | 257 | 0.8% |
| Q2 2026 | 1,967 | $57.5B | 219,218,857 | 155 | 587 | 661 | 2.4% |
| Q1 2026 | 1,914 | $55.4B | 221,027,450 | 331 | 493 | 623 | 2.7% |
| Q4 2025 | 1,692 | $37.5B | 224,467,562 | 112 | 500 | 535 | 2.6% |
| Q3 2025 | 1,675 | $44.3B | 222,984,930 | 183 | 412 | 566 | 3.1% |
| Q2 2025 | 1,586 | $39.8B | 232,951,949 | 139 | 470 | 559 | 2.8% |
| Q1 2025 | 1,570 | $34.6B | 232,321,045 | 120 | 433 | 599 | 2.5% |
| Q4 2024 | 1,570 | $33.4B | 232,352,621 | 78 | 399 | 603 | 2.9% |
| Q3 2024 | 1,592 | $40.5B | 239,612,997 | 89 | 462 | 576 | 3.5% |
| Q2 2024 | 1,663 | $45.5B | 251,726,915 | 109 | 531 | 557 | 4.1% |
| Q1 2024 | 1,708 | $58.5B | 279,162,757 | 225 | 430 | 624 | 3.9% |
| Q4 2023 | 1,570 | $44.6B | 286,414,715 | 92 | 424 | 561 | 4.6% |
| Q3 2023 | 1,492 | $46.5B | 290,148,722 | 195 | 403 | 524 | 5.6% |
| Q2 2023 | 1,368 | $36.8B | 304,252,452 | 78 | 384 | 556 | 3.4% |
| Q1 2023 | 1,450 | $47.5B | 338,932,798 | 141 | 399 | 558 | 4.2% |
| Q4 2022 | 1,399 | $43.9B | 359,197,510 | 144 | 365 | 537 | 4.8% |
| Q3 2022 | 1,282 | $83.8B | 1,349,087,593 | 140 | 362 | 479 | 2.3% |
| Q2 2022 | 1,223 | $68.0B | 1,901,286,297 | 120 | 370 | 446 | 2.7% |
| Q1 2022 | 1,182 | $63.6B | 1,126,284,984 | 170 | 324 | 427 | 3.3% |
| Q4 2021 | 1,097 | $50.3B | 1,388,572,831 | 100 | 325 | 354 | 3.9% |
| Q3 2021 | 1,005 | $50.9B | 1,302,091,809 | 93 | 307 | 346 | 4.3% |
| Q2 2021 | 1,003 | $51.5B | 1,184,695,386 | 115 | 311 | 339 | 4.5% |
| Q1 2021 | 976 | $53.8B | 1,746,806,077 | 146 | 286 | 337 | 4.0% |
| Q4 2020 | 898 | $42.5B | 1,998,732,857 | 109 | 215 | 364 | 4.8% |
| Q3 2020 | 839 | $36.5B | 1,660,115,097 | 49 | 234 | 367 | 3.2% |
| Q2 2020 | 929 | $52.9B | 1,629,323,232 | 144 | 281 | 353 | 2.0% |
| Q1 2020 | 895 | $37.1B | 1,535,265,923 | 61 | 284 | 403 | 2.0% |
| Q4 2019 | 1,191 | $84.8B | 1,944,466,544 | 111 | 346 | 433 | 3.7% |
| Q3 2019 | 1,104 | $75.1B | 1,290,627,612 | 98 | 341 | 451 | 4.1% |
| Q2 2019 | 1,111 | $82.8B | 1,667,892,689 | 84 | 413 | 414 | 2.9% |
| Q1 2019 | 1,204 | $92.0B | 2,717,635,140 | 122 | 436 | 396 | 0.8% |
| Q4 2018 | 1,167 | $91.2B | 2,327,273,270 | 11 | 28 | 10 | 0.9% |