MPLX LP MPLX
COM UNIT REP LTD · MLP · CUSIP 55336V100
Public company in the United States
- SectorEnergy
- IndustryPipe Lines (No Natural Gas)
- HeadquartersFindlay, OH
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($40.4m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $56.33. Options: 8 managers hold calls ($230.1m notional), 9 hold puts ($73.2m).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 342 |
| Q4 2022 | 358 |
| Q1 2023 | 380 |
| Q2 2023 | 370 |
| Q3 2023 | 398 |
| Q4 2023 | 444 |
| Q1 2024 | 480 |
| Q2 2024 | 491 |
| Q3 2024 | 502 |
| Q4 2024 | 535 |
| Q1 2025 | 571 |
| Q2 2025 | 576 |
| Q3 2025 | 576 |
| Q4 2025 | 632 |
| Q1 2026 | 645 |
| Q2 2026 | 637 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 244 | 128 |
| Q4 2024 | 245 | 149 |
| Q1 2025 | 277 | 162 |
| Q2 2025 | 270 | 181 |
| Q3 2025 | 273 | 165 |
| Q4 2025 | 299 | 167 |
| Q1 2026 | 285 | 231 |
| Q2 2026 | 295 | 205 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $144.2m | $96.3m | 0.67 |
| Q4 2025 | $278.0m | $72.7m | 0.26 |
| Q1 2026 | $230.8m | $48.7m | 0.21 |
| Q2 2026 | $230.1m | $73.2m | 0.32 |
Biggest buyers
| ALPS ADVISORS INC | Added | +1.5m |
| HRT FINANCIAL LP | Added | +748.1k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | Added | +692.3k |
| Arax Advisory Partners | Added | +594.3k |
| MIZUHO MARKETS AMERICAS LLC | New | +575.0k |
| FMR LLC | Added | +560.0k |
| Recurrent Investment Advisors LLC | New | +544.7k |
| ROYAL BANK OF CANADA | Added | +483.6k |
| CIBC Bancorp USA Inc. | Added | +346.0k |
| MORGAN STANLEY | Added | +311.6k |
Biggest sellers
| TORTOISE CAPITAL ADVISORS, L.L.C. | Reduced | -2.8m |
| Blackstone Inc. | Reduced | -2.4m |
| BANK OF MONTREAL /CAN/ | Reduced | -1.5m |
| GOLDMAN SACHS GROUP INC | Reduced | -1.2m |
| KAYNE ANDERSON CAPITAL ADVISORS LP | Reduced | -963.6k |
| Brookfield Corp /ON/ | Reduced | -817.8k |
| JPMORGAN CHASE & CO | Reduced | -705.3k |
| ING GROEP NV | Reduced | -528.6k |
| BANK OF AMERICA CORP /DE/ | Reduced | -502.8k |
| Fractal Investments LLC | Reduced | -383.2k |
Biggest calls
| ROYAL BANK OF CANADA | New | $63.4m1.1m shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $46.8m831.0k shares |
| JANE STREET GROUP, LLC | Added | $38.8m689.4k shares |
| CITADEL ADVISORS LLC | Added | $31.0m551.1k shares |
| GROUP ONE TRADING LLC | Added | $26.6m472.2k shares |
| IMC-Chicago, LLC | Added | $12.3m219.0k shares |
| SIMPLEX TRADING, LLC | Reduced | $8.8m155.4k shares |
| PEAK6 LLC | Reduced | $2.3m41.7k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $34.6m614.7k shares |
| GROUP ONE TRADING LLC | Added | $14.0m248.9k shares |
| JANE STREET GROUP, LLC | Added | $8.7m153.9k shares |
| IMC-Chicago, LLC | Added | $8.2m145.6k shares |
| CITADEL ADVISORS LLC | Added | $5.0m89.4k shares |
| SIMPLEX TRADING, LLC | Added | $2.5m44.2k shares |
| Chicago Partners Investment Group LLC | New | $80.5k1.4k shares |
| PEAK6 LLC | Reduced | $28.2k500 shares |
| SIGNATUREFD, LLC | Unchanged | $13.3k5.0k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 1 | $189.0k | — |
| Q1 2025 | 1 | $211.0k | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 0 | — | 0 | — | — |
| Q3 2026 | 0 | — | 0 | — | — |
None reported since 1 Apr 2026.
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| ALPS ADVISORS INC 7.55% of their portfolio | 28.6m $1.6bn | Added +1.5m |
| Invesco Ltd. 0.08% of their portfolio | 18.3m $1.0bn | Added +6.8k |
| Blackstone Inc. 2.38% of their portfolio | 13.0m $729.9m | Reduced -2.4m |
| GOLDMAN SACHS GROUP INC 0.07% of their portfolio | 11.3m $638.2m | Reduced -1.2m |
| TORTOISE CAPITAL ADVISORS, L.L.C. 6.01% of their portfolio | 10.5m $591.5m | Reduced -2.8m |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.54% of their portfolio | 8.0m $451.3m | Added +692.3k |
| KAYNE ANDERSON CAPITAL ADVISORS LP 6.48% of their portfolio | 5.9m $330.3m | Reduced -963.6k |
| Energy Income Partners, LLC 4.77% of their portfolio | 5.4m $303.1m | Added +222.8k |
| MORGAN STANLEY 0.02% of their portfolio | 5.3m $297.2m | Added +311.6k |
| UBS Group AG 0.05% of their portfolio | 5.3m $296.3m | Added +25.8k |
| CHICKASAW CAPITAL MANAGEMENT LLC 10.56% of their portfolio | 5.2m $293.6m | Reduced -11.0k |
| FMR LLC 0.01% of their portfolio | 3.9m $220.9m | Added +560.0k |
| JPMORGAN CHASE & CO 0.01% of their portfolio | 3.4m $192.7m | Reduced -705.3k |
| Brave Warrior Advisors, LLC 3.90% of their portfolio | 3.2m $179.2m | Reduced -73.0k |
| CIBC Bancorp USA Inc. 0.21% of their portfolio | 3.0m $168.3m | Added +346.0k |
| BANK OF MONTREAL /CAN/ 0.05% of their portfolio | 2.5m $143.6m | Reduced -1.5m |
| Clearbridge Investments, LLC 0.11% of their portfolio | 2.3m $132.0m | Unchanged |
| MILLER HOWARD INVESTMENTS INC /NY 3.48% of their portfolio | 2.3m $131.0m | Added +86.1k |
| WESTWOOD HOLDINGS GROUP INC 0.90% of their portfolio | 2.1m $119.1m | Reduced -123.0k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 2.1m $116.6m | Reduced -502.8k |
| EAGLE GLOBAL ADVISORS LLC 3.35% of their portfolio | 1.8m $101.0m | Reduced -11.5k |
| Fractal Investments LLC 10.84% of their portfolio | 1.7m $94.0m | Reduced -383.2k |
| ROYAL BANK OF CANADA 0.02% of their portfolio | 1.6m $92.1m | Added +483.6k |
| DUFF & PHELPS INVESTMENT MANAGEMENT CO 0.86% of their portfolio | 1.6m $91.2m | Reduced -50.0k |
| AlphaCore Capital LLC 1.68% of their portfolio | 1.6m $91.0m | Added +77 |
| CUSHING ASSET MANAGEMENT, LP dba NXG INVESTMENT MANAGEMENT 4.07% of their portfolio | 1.6m $91.0m | Reduced -244.5k |
| Brookfield Corp /ON/ 0.10% of their portfolio | 1.4m $76.4m | Reduced -817.8k |
| BNP PARIBAS FINANCIAL MARKETS 0.04% of their portfolio | 1.3m $74.0m | Added +22.6k |
| STIFEL FINANCIAL CORP 0.06% of their portfolio | 1.3m $73.6m | Reduced -24.2k |
| ING GROEP NV 0.34% of their portfolio | 1.2m $69.8m | Reduced -528.6k |
| COHEN & STEERS, INC. 0.10% of their portfolio | 1.2m $66.4m | Added +248.9k |
| Mariner, LLC 0.07% of their portfolio | 1.1m $64.4m | Reduced -9.3k |
| Epoch Investment Partners, Inc. 0.34% of their portfolio | 1.0m $58.9m | Reduced -81.5k |
| Progeny 3, Inc. 2.95% of their portfolio | 1.0m $57.2m | Unchanged |
| BARCLAYS PLC 0.02% of their portfolio | 970.6k $54.7m | Added +83.4k |
| INFRASTRUCTURE CAPITAL ADVISORS, LLC 4.12% of their portfolio | 936.8k $52.8m | Reduced -131.5k |
| RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio | 922.2k $51.9m | Reduced -55.8k |
| VICTORY CAPITAL MANAGEMENT INC 0.03% of their portfolio | 872.8k $49.2m | Reduced -98.7k |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 863.1k $48.6m | Added +57.8k |
| Americana Partners, LLC 1.09% of their portfolio | 856.7k $48.3m | Added +91.2k |
| DEUTSCHE BANK AG\ 0.01% of their portfolio | 853.8k $48.1m | Unchanged |
| Allianz Asset Management GmbH 0.05% of their portfolio | 829.1k $46.7m | Unchanged |
| HRT FINANCIAL LP 0.11% of their portfolio | 821.0k $46.2m | Added +748.1k |
| NEUBERGER BERMAN GROUP LLC 0.03% of their portfolio | 749.8k $42.2m | Reduced -350.2k |
| REAVES W H & CO INC 0.57% of their portfolio | 670.5k $37.8m | Unchanged |
| Arax Advisory Partners 0.22% of their portfolio | 596.0k $33.6m | Added +594.3k |
| LONGFELLOW INVESTMENT MANAGEMENT CO LLC 6.67% of their portfolio | 579.5k $32.6m | Unchanged |
| MIZUHO MARKETS AMERICAS LLC 0.58% of their portfolio | 575.0k $32.4m | New |
| Recurrent Investment Advisors LLC 1.90% of their portfolio | 544.7k $30.7m | New |
| APPALOOSA LP 0.38% of their portfolio | 502.5k $28.3m | Unchanged |
| Chicago Partners Investment Group LLC 0.56% of their portfolio | 488.7k $28.1m | Added +2.1k |
| NEOS Investment Management LLC 0.10% of their portfolio | 486.0k $27.4m | Added +152.0k |
| LPL Financial LLC 0.01% of their portfolio | 470.1k $26.5m | Reduced -6.6k |
| JENNISON ASSOCIATES LLC 0.01% of their portfolio | 441.8k $24.9m | Reduced -103.3k |
| Oxbow Advisors, LLC 2.02% of their portfolio | 440.6k $24.8m | Added +6.5k |
| Bollard Group LLC 0.74% of their portfolio | 431.9k $24.3m | Added +26.2k |
| Sovereign Investment Advisors, LLC 3.95% of their portfolio | 374.0k $21.1m | Unchanged |
| EXCHANGE TRADED CONCEPTS, LLC 0.10% of their portfolio | 369.0k $20.8m | Reduced -34.9k |
| HighTower Advisors, LLC 0.02% of their portfolio | 365.7k $20.6m | Added +2.0k |
| Northside Capital Management, LLC 1.67% of their portfolio | 363.0k $20.4m | Added +874 |
| Maryland State Retirement & Pension System 0.34% of their portfolio | 355.4k $20.0m | Added +16.3k |
| Corient Private Wealth LP 0.03% of their portfolio | 348.1k $19.6m | Added +10.4k |
| Texas Yale Capital Corp. 0.42% of their portfolio | 344.3k $19.4m | Added +27.1k |
| Nuveen, LLC 0.00% of their portfolio | 341.6k $19.2m | Added +4.8k |
| Heronetta Management, L.P. 16.76% of their portfolio | 324.0k $18.3m | Unchanged |
| Catalyst Capital Advisors LLC 0.30% of their portfolio | 322.1k $18.1m | Added +43.5k |
| TECTONIC ADVISORS LLC 0.75% of their portfolio | 278.2k $15.7m | Added +15.5k |
| CITIGROUP INC 0.01% of their portfolio | 275.9k $15.5m | Added +54.0k |
| WALNUT PRIVATE EQUITY PARTNERS, LLC 8.46% of their portfolio | 268.0k $15.7m | Added +1.5k |
| TrueMark Investments, LLC 1.88% of their portfolio | 266.4k $15.0m | Added +34.6k |
| OPAL CAPITAL LLC 2.68% of their portfolio | 266.1k $15.0m | Added +34.6k |
| Private Capital Advisors, Inc. 1.29% of their portfolio | 260.5k $14.7m | Added +2.7k |
| Rockefeller Capital Management L.P. 0.02% of their portfolio | 258.9k $14.6m | Added +23.4k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 255.5k $14.4m | Added +6.7k |
| Waverly Advisors, LLC 0.08% of their portfolio | 239.6k $13.5m | Reduced -1.3k |
| DEROY & DEVEREAUX PRIVATE INVESTMENT COUNSEL INC 0.53% of their portfolio | 227.0k $12.8m | Reduced -500 |
| Adams Asset Advisors, LLC 1.41% of their portfolio | 221.5k $12.5m | Added +5.4k |
| &PARTNERS 0.05% of their portfolio | 219.8k $12.4m | Reduced -10.7k |
| RR Advisors, LLC 3.49% of their portfolio | 214.2k $12.1m | Unchanged |
| STEPHENS INC /AR/ 0.13% of their portfolio | 211.7k $11.9m | Added +60.0k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 209.1k $11.8m | Added +203.9k |
| Sequoia Financial Advisors, LLC 0.06% of their portfolio | 203.9k $11.5m | Added +3.7k |
| Cetera Investment Advisers 0.01% of their portfolio | 194.6k $11.0m | Reduced -4.5k |
| UNITED CAPITAL FINANCIAL ADVISORS, LLC 0.06% of their portfolio | 187.6k $10.6m | Reduced -218 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.01% of their portfolio | 186.8k $10.5m | Added +142.1k |
| Cambridge Investment Research Advisors, Inc. 0.01% of their portfolio | 186.8k $10.5m | Added +94.7k |
| AVENIR CORP 1.27% of their portfolio | 185.4k $10.4m | Reduced -1.5k |
| EVERGREEN CAPITAL MANAGEMENT LLC 0.18% of their portfolio | 177.0k $10.0m | Reduced -7.0k |
| Advisors Asset Management, Inc. 0.14% of their portfolio | 168.5k $9.5m | Added +5.1k |
| Empirical Finance, LLC 0.39% of their portfolio | 164.5k $9.3m | Reduced -53.0k |
| Empowered Funds, LLC 0.05% of their portfolio | 164.5k $9.3m | Reduced -53.0k |
| HENNESSY ADVISORS INC 0.29% of their portfolio | 162.5k $9.2m | Unchanged |
| Advisors Capital Management, LLC 0.09% of their portfolio | 157.8k $8.9m | Added +843 |
| Blueprint Investment Partners LLC 0.74% of their portfolio | 157.0k $8.8m | Added +5.0k |
| Blueprint Financial Advisors LLC 0.98% of their portfolio | 157.0k $8.8m | Added +3.0k |
| Susquehanna Portfolio Strategies, LLC 0.14% of their portfolio | 156.0k $8.8m | Reduced -97.2k |
| Gilman Hill Asset Management, LLC 1.19% of their portfolio | 154.1k $8.7m | Reduced -855 |
| GLENMEDE TRUST CO NA 0.04% of their portfolio | 152.7k $8.6m | Reduced -23.2k |
| Evercore Wealth Management, LLC 0.12% of their portfolio | 152.1k $8.6m | Added +20.0k |
| Turtle Creek Wealth Advisors, LLC 0.45% of their portfolio | 150.4k $8.5m | Added +4.3k |