MPLX LP
MPLX- Exchange
- NYSE
- Industry
- Pipe Lines (No Natural Gas)
- SEC CIK
- 0001552000
No open-market purchases or sales by MPLX LP insiders were filed in the last 90 days; 639 institutions reported holding it in 13F filings for Q2 2026, worth $11.1B in total; Appaloosa is the only superinvestor holding it.
13F holders, Q1 2026
Institutional positions in MPLX LP as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 646
- +19 vs. Q4 2025
- Shares held
- 202.7M
- +27.3M (+15.5%) vs. Q4 2025
- Total value
- $11.6B
- +$2.20B (+23.5%) vs. Q4 2025
- New holders
- 76
- 216 more added
- Sold out
- 57
- 173 more reduced
6 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MPLX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 639 | $11.1B |
| Q1 2026 | 646 | $11.6B |
| Q4 2025 | 633 | $9.52B |
| Q3 2025 | 576 | $10.5B |
| Q2 2025 | 575 | $11.2B |
| Q1 2025 | 570 | $11.6B |
| Q4 2024 | 535 | $10.4B |
| Q3 2024 | 502 | $10.3B |
| Q2 2024 | 491 | $10.2B |
| Q1 2024 | 480 | $9.32B |
| Q4 2023 | 444 | $8.15B |
| Q3 2023 | 398 | $8.18B |
| Q2 2023 | 370 | $7.62B |
| Q1 2023 | 381 | $7.91B |
| Q4 2022 | 359 | $7.36B |
| Q3 2022 | 342 | $6.98B |
| Q2 2022 | 340 | $6.97B |
| Q1 2022 | 350 | $8.20B |
| Q4 2021 | 341 | $7.48B |
| Q3 2021 | 311 | $7.51B |
| Q2 2021 | 301 | $8.20B |
| Q1 2021 | 306 | $7.34B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding MPLX LP; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Guggenheim Capital LLC | 20,290 | $1.16M | 0.01% | −1,021−4.8% | Reduced |
| Tred Avon Family Wealth, LLC | 20,342 | $1.16M | 0.39% | +3,495+20.7% | Added |
| CVFG LLC | 20,700 | $1.18M | 0.15% | +20,700 | New |
| Fayez Sarofim & Co | 20,814 | $1.19M | 0.00% | 00.0% | Unchanged |
| Trilogy Capital Inc. | 20,822 | $1.19M | 0.05% | −250−1.2% | Reduced |
| Linscomb & Williams, Inc. | 21,100 | $1.20M | 0.05% | +5,152+32.3% | Added |
| Smith, Moore & Co. | 21,165 | $1.21M | 0.09% | −1,300−5.8% | Reduced |
| Inspire Advisors, LLC | 21,235 | $1.21M | 0.10% | +1,798+9.3% | Added |
| Pasadena Private Wealth, LLC | 21,348 | $1.22M | 0.17% | −1,417−6.2% | Reduced |
| Westover Capital Advisors, LLC | 21,400 | $1.22M | 0.22% | +3,600+20.2% | Added |
| Allspring Global Investments Holdings, LLC | 22,481 | $1.26M | 0.00% | −399−1.7% | Reduced |
| SEI Investments Co | 22,175 | $1.27M | 0.00% | +201+0.9% | Added |
| Kovack Advisors, Inc. | 22,385 | $1.27M | 0.07% | −166−0.7% | Reduced |
| HB Wealth Management, LLC | 22,266 | $1.27M | 0.01% | −4,324−16.3% | Reduced |
| We Are One Seven, LLC | 22,298 | $1.27M | 0.03% | +2,122+10.5% | Added |
| C2C Wealth Management, LLC | 22,321 | $1.27M | 1.08% | +400+1.8% | Added |
| Inscription Capital, LLC | 22,656 | $1.29M | 0.14% | +91+0.4% | Added |
| Spears Abacus Advisors LLC | 22,800 | $1.30M | 0.03% | −6,700−22.7% | Reduced |
| AssuredPartners Investment Advisors, LLC | 23,995 | $1.34M | 0.15% | −6,038−20.1% | Reduced |
| Robertson Stephens Wealth Management, LLC | 23,533 | $1.34M | 0.04% | +525+2.3% | Added |
| Natixis | 23,958 | $1.37M | 0.01% | 00.0% | Unchanged |
| Mutual Advisors, LLC | 24,813 | $1.42M | 0.03% | +5,252+26.8% | Added |
| American Financial Group Inc | 25,000 | $1.43M | 0.53% | 00.0% | Unchanged |
| Chelsea Counsel Co | 25,000 | $1.43M | 0.63% | 00.0% | Unchanged |
| National Philanthropic Trust | 25,000 | $1.43M | 0.02% | 00.0% | Unchanged |
| Bramshill Investments, LLC | 25,559 | $1.46M | 0.13% | −3,943−13.4% | Reduced |
| Exencial Wealth Advisors, LLC | 25,685 | $1.47M | 0.05% | +187+0.7% | Added |
| Hourglass Capital, LLC | 25,872 | $1.48M | 0.31% | +25,872 | New |
| Johnson Investment Counsel Inc | 26,278 | $1.50M | 0.01% | +26,278 | New |
| IFG Advisory, LLC | 26,320 | $1.50M | 4.31% | +26,320 | New |
| Northwestern Mutual Wealth Management Co | 26,321 | $1.50M | 0.00% | +56+0.2% | Added |
| McIntyre Freedman & Flynn Investment Advisers Inc | 27,000 | $1.54M | 0.87% | 00.0% | Unchanged |
| Virtu Financial LLC | 27,027 | $1.54M | 0.06% | +6,705+33.0% | Added |
| Argyle Capital Partners, LLC | 27,077 | $1.55M | 1.11% | +415+1.6% | Added |
| Greenline Partners, LLC | 27,163 | $1.55M | 0.17% | +2,744+11.2% | Added |
| Acadian Asset Management LLC | 27,531 | $1.57M | 0.00% | 00.0% | Unchanged |
| Resolute Capital, LLC | 27,788 | $1.59M | 0.64% | +3,524+14.5% | Added |
| Outfitter Financial LLC | 27,972 | $1.60M | 1.24% | 00.0% | Unchanged |
| Snowden Capital Advisors LLC | 28,065 | $1.60M | 0.04% | −2,775−9.0% | Reduced |
| One Charles Private Wealth Services, LLC | 28,118 | $1.60M | 0.40% | +733+2.7% | Added |
| D.A. Davidson & Co. | 28,501 | $1.63M | 0.01% | +654+2.3% | Added |
| Independent Advisor Alliance | 28,543 | $1.63M | 0.02% | −20,628−42.0% | Reduced |
| Allworth Financial LP | 28,549 | $1.63M | 0.01% | +955+3.5% | Added |
| Northern Trust Corp | 28,953 | $1.65M | 0.00% | +2,477+9.4% | Added |
| Clear Trail Advisors, LLC | 29,844 | $1.70M | 0.28% | −186−0.6% | Reduced |
| Hartree Partners, LP | 30,000 | $1.71M | 0.37% | +30,000 | New |
| Fortem Financial Group, LLC | 30,073 | $1.72M | 0.43% | +1,979+7.0% | Added |
| Pingora Partners LLC | 30,223 | $1.72M | 1.02% | 00.0% | Unchanged |
| Quadrant Capital Group LLC | 31,150 | $1.78M | 0.05% | 00.0% | Unchanged |
| ProShare Advisors LLC | 31,376 | $1.79M | 0.00% | −3,779−10.7% | Reduced |
| CWA Asset Management Group, LLC | 31,376 | $1.79M | 0.06% | −2,399−7.1% | Reduced |
| Merit Financial Group, LLC | 31,679 | $1.81M | 0.01% | −11,555−26.7% | Reduced |
| Obermeyer Wood Investment Counsel, LLLP | 32,346 | $1.85M | 0.09% | 00.0% | Unchanged |
| Apollon Wealth Management, LLC | 32,804 | $1.87M | 0.03% | −716−2.1% | Reduced |
| Quantinno Capital Management LP | 32,878 | $1.88M | 0.00% | +12,379+60.4% | Added |
| Brookstone Capital Management | 33,143 | $1.89M | 0.02% | −4,401−11.7% | Reduced |
| Umb Bank N A | 33,536 | $1.91M | 0.03% | +1,624+5.1% | Added |
| Bank of New York Mellon Corp | 33,872 | $1.93M | 0.00% | −3,608−9.6% | Reduced |
| Prospera Financial Services Inc | 33,922 | $1.94M | 0.03% | +2,222+7.0% | Added |
| Sanctuary Advisors, LLC | 34,374 | $1.96M | 0.01% | −9,361−21.4% | Reduced |
| Oppenheimer Asset Management Inc. | 34,762 | $1.98M | 0.02% | +2,436+7.5% | Added |
| Geneva Partners, LLC | 35,000 | $2.00M | 0.96% | −5,000−12.5% | Reduced |
| Birch Capital Management, LLC | 35,627 | $2.03M | 1.07% | 00.0% | Unchanged |
| Ameriprise Financial Inc | 35,628 | $2.03M | 0.00% | −20,122−36.1% | Reduced |
| Silvercrest Asset Management Group LLC | 36,192 | $2.07M | 0.01% | −2,952−7.5% | Reduced |
| Oppenheimer & Co Inc | 36,259 | $2.07M | 0.03% | −99,928−73.4% | Reduced |
| Pathstone Holdings, LLC | 36,711 | $2.10M | 0.01% | −1,865−4.8% | Reduced |
| Lido Advisors, LLC | 37,155 | $2.12M | 0.01% | −26,249−41.4% | Reduced |
| Crescent Grove Advisors, LLC | 37,197 | $2.12M | 0.21% | +1,432+4.0% | Added |
| Barnett & Company, Inc. | 37,247 | $2.13M | 1.65% | −840−2.2% | Reduced |
| Haverford Trust Co | 37,303 | $2.13M | 0.02% | +37,303 | New |
| Kestra Private Wealth Services, LLC | 38,827 | $2.22M | 0.03% | −3,803−8.9% | Reduced |
| Blair William & Co | 38,911 | $2.22M | 0.01% | +1,767+4.8% | Added |
| CAPROCK Group, Inc. | 39,003 | $2.23M | 0.05% | −4,253−9.8% | Reduced |
| Pekin Hardy Strauss, Inc. | 39,045 | $2.23M | 0.23% | 00.0% | Unchanged |
| Reuter James Wealth Management, LLC | 39,048 | $2.23M | 0.32% | 00.0% | Unchanged |
| Keeler Thomas Management LLC | 40,364 | $2.30M | 0.97% | +40,364 | New |
| Colony Group, LLC | 40,905 | $2.33M | 0.00% | +9,628+30.8% | Added |
| Bahl & Gaynor Inc | 41,225 | $2.35M | 0.01% | 00.0% | Unchanged |
| Daymark Wealth Partners, LLC | 41,585 | $2.37M | 0.07% | +2,724+7.0% | Added |
| Castleark Management LLC | 41,892 | $2.39M | 0.08% | −11,220−21.1% | Reduced |
| Doliver Advisors, LP | 42,223 | $2.41M | 0.55% | −250−0.6% | Reduced |
| Zurich Insurance Group Ltd | 42,400 | $2.42M | 0.02% | 00.0% | Unchanged |
| Applied Capital LLC | 42,930 | $2.45M | 1.78% | +7,030+19.6% | Added |
| Keybank National Association | 42,970 | $2.45M | 0.01% | −981−2.2% | Reduced |
| Delta Investment Management, LLC | 43,572 | $2.49M | 0.44% | +3,497+8.7% | Added |
| Parkside Financial Bank & Trust | 43,801 | $2.50M | 0.19% | +25+0.1% | Added |
| Susquehanna International Group, LLP | 44,707 | $2.55M | 0.00% | −103,342−69.8% | Reduced |
| GraniteShares Advisors LLC | 45,223 | $2.58M | 1.86% | −5,168−10.3% | Reduced |
| Howard Financial Services, Ltd. | 45,575 | $2.60M | 0.29% | +841+1.9% | Added |
| PFG Investments, LLC | 45,860 | $2.62M | 0.12% | −448−1.0% | Reduced |
| Steward Partners Investment Advisory, LLC | 46,016 | $2.63M | 0.01% | −286−0.6% | Reduced |
| CFM Wealth Partners LLC | 46,729 | $2.67M | 0.40% | 00.0% | Unchanged |
| Stratos Wealth Partners, LTD. | 47,120 | $2.69M | 0.03% | +8,682+22.6% | Added |
| RMB Capital Management, LLC | 48,950 | $2.79M | 0.05% | +9,757+24.9% | Added |
| Private Management Group Inc | 50,000 | $2.85M | 0.08% | 00.0% | Unchanged |
| Fidelis Capital Partners, LLC | 50,194 | $2.86M | 0.20% | +41,162+455.7% | Added |
| Pathway Financial Advisers, LLC | 51,633 | $2.95M | 0.83% | +7,170+16.1% | Added |
| Williams Jones Wealth Management, LLC. | 52,581 | $3.00M | 0.04% | −450−0.8% | Reduced |
| Private Advisor Group, LLC | 53,692 | $3.06M | 0.01% | −2,575−4.6% | Reduced |