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Livermore
Livermore
ZHEN

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.

Institutional holdersQ1 2026: 646 institutions
Q1 2021: 306 institutionsQ2 2021: 301 institutionsQ3 2021: 311 institutionsQ4 2021: 341 institutionsQ1 2022: 350 institutionsQ2 2022: 340 institutionsQ3 2022: 342 institutionsQ4 2022: 359 institutionsQ1 2023: 381 institutionsQ2 2023: 370 institutionsQ3 2023: 398 institutionsQ4 2023: 444 institutionsQ1 2024: 480 institutionsQ2 2024: 491 institutionsQ3 2024: 502 institutionsQ4 2024: 535 institutionsQ1 2025: 570 institutionsQ2 2025: 575 institutionsQ3 2025: 576 institutionsQ4 2025: 633 institutionsQ1 2026: 646 institutionsQ2 2026: 639 institutions
Value heldQ1 2026: $11.6B
Q1 2021: $7.34BQ2 2021: $8.20BQ3 2021: $7.51BQ4 2021: $7.48BQ1 2022: $8.20BQ2 2022: $6.97BQ3 2022: $6.98BQ4 2022: $7.36BQ1 2023: $7.91BQ2 2023: $7.62BQ3 2023: $8.18BQ4 2023: $8.15BQ1 2024: $9.32BQ2 2024: $10.2BQ3 2024: $10.3BQ4 2024: $10.4BQ1 2025: $11.6BQ2 2025: $11.2BQ3 2025: $10.5BQ4 2025: $9.52BQ1 2026: $11.6BQ2 2026: $11.1B
Institutions holding MPLX and their total value by quarter
QuarterHoldersValue
Q2 2026639$11.1B
Q1 2026646$11.6B
Q4 2025633$9.52B
Q3 2025576$10.5B
Q2 2025575$11.2B
Q1 2025570$11.6B
Q4 2024535$10.4B
Q3 2024502$10.3B
Q2 2024491$10.2B
Q1 2024480$9.32B
Q4 2023444$8.15B
Q3 2023398$8.18B
Q2 2023370$7.62B
Q1 2023381$7.91B
Q4 2022359$7.36B
Q3 2022342$6.98B
Q2 2022340$6.97B
Q1 2022350$8.20B
Q4 2021341$7.48B
Q3 2021311$7.51B
Q2 2021301$8.20B
Q1 2021306$7.34B

Institutions, Q1 2026

Shares, value and share of portfolio for each institution holding MPLX LP; share changes are against Q4 2025.

Institutions holding MPLX in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Annex Advisory Services, LLC5,415$309.0K0.01%−845−13.5%Reduced
Outlook Wealth Advisors, LLC5,420$309.3K0.07%+30+0.6%Added
MBE Wealth Management, LLC5,426$309.7K0.13%+38+0.7%Added
JustInvest LLC5,444$310.7K0.00%−186−3.3%Reduced
Oak Family Advisors, LLC5,445$310.7K0.10%+8+0.1%Added
Annis Gardner Whiting Capital Advisors, LLC5,450$311.0K0.05%+5,450New
Madison Park Capital Advisors, LLC5,500$313.9K0.25%00.0%Unchanged
William John Sempolinski5,539$316.1K0.16%+700+14.5%Added
Procyon Private Wealth Partners, LLC5,553$316.9K0.02%+5,553New
Endeavor Private Wealth, Inc.5,587$318.8K0.09%−149−2.6%Reduced
Philadelphia Trust Co5,620$321.0K0.02%00.0%Unchanged
Allie Family Office LLC5,719$326.4K0.14%00.0%Unchanged
Verdence Capital Advisors LLC5,719$326.4K0.02%+5,719New
Savvy Advisors, Inc.5,725$326.7K0.01%+5,725New
Secure Asset Management, LLC5,729$326.9K0.05%+45+0.8%Added
Advisor Resource Council5,763$328.9K0.13%00.0%Unchanged
Mosaic Family Wealth Partners, LLC5,786$330.2K0.03%00.0%Unchanged
Van Cleef Asset Management,Inc5,808$331.5K0.04%00.0%Unchanged
Atwood & Palmer Inc5,844$333.5K0.02%00.0%Unchanged
Winebrenner Capital Management LLC5,948$339.5K0.22%00.0%Unchanged
Great Valley Advisor Group, Inc.5,988$341.6K0.01%+5,988New
Advus Financial Partners, LLC6,000$342.4K0.09%00.0%Unchanged
Formidable Asset Management, LLC6,432$343.3K0.05%−1,148−15.1%Reduced
Beverly Hills Private Wealth, LLC6,101$348.2K0.06%+522+9.4%Added
Corps Capital Advisors, LLC6,104$348.4K0.30%+6,104New
Empirical Financial Services, LLC d.b.a. Empirical Wealth Management6,166$351.9K0.01%+446+7.8%Added
Gladstone Institutional Advisory LLC6,172$352.3K0.01%−274−4.3%Reduced
GWN Securities Inc.6,198$353.8K0.07%+2,106+51.5%Added
Bell Bank6,200$353.8K0.02%00.0%Unchanged
Vestcor Inc6,285$359.0K0.01%00.0%Unchanged
Parallel Advisors, LLC6,299$359.5K0.01%+620+10.9%Added
Squarepoint Ops LLC6,300$359.5K0.00%+6,300New
Lavaca Capital LLC6,400$365.2K0.07%00.0%Unchanged
Hilltop National Bank6,400$365.2K0.09%00.0%Unchanged
Vestia Personal Wealth Advisors6,420$366.4K0.17%00.0%Unchanged
Aspen Grove Capital, LLC6,441$367.6K0.07%00.0%Unchanged
Principal Street Partners, LLC6,448$368.0K0.06%−70−1.1%Reduced
Severin Investments, LLC6,450$368.1K0.32%+52+0.8%Added
National Wealth Management Group, LLC6,476$369.6K0.14%−419−6.1%Reduced
Keudell/Morrison Wealth Management6,500$371.0K0.08%00.0%Unchanged
Redhawk Wealth Advisors, Inc.6,541$373.3K0.04%+251+4.0%Added
Level Four Advisory Services, LLC6,609$377.2K0.01%−11,204−62.9%Reduced
Clark Financial Services Group Inc6,618$377.7K0.21%+6,618New
Titleist Asset Management, LLC6,650$379.5K0.03%+96+1.5%Added
Washington Trust Advisors, Inc.6,745$384.9K0.03%+2,920+76.3%Added
ORBA Wealth Advisors, L.L.C.6,756$385.6K0.46%00.0%Unchanged
Foundations Investment Advisors, LLC6,799$388.0K0.00%−4,650−40.6%Reduced
Whittier Trust Co of Nevada Inc7,000$389.6K0.01%00.0%Unchanged
ORG Wealth Partners, LLC6,850$390.9K0.08%00.0%Unchanged
Icon Wealth Advisors, LLC7,168$398.0K0.03%+91+1.3%Added
Hancock Whitney Corp7,038$401.7K0.01%−1,950−21.7%Reduced
American National Bank7,126$406.7K0.04%−150−2.1%Reduced
Intrua Financial, LLC7,149$408.0K0.04%+79+1.1%Added
Farmers & Merchants Investments Inc7,285$415.8K0.01%−1,457−16.7%Reduced
Arista Wealth Management, LLC7,306$417.0K0.05%00.0%Unchanged
Amplify Investments, LLC7,327$418.2K7.50%00.0%Unchanged
Sigma Planning Corp7,346$419.2K0.01%+72+1.0%Added
Allegheny Financial Group LTD7,364$420.3K0.06%00.0%Unchanged
Lee Financial Co7,372$420.7K0.06%00.0%Unchanged
Traynor Capital Management, Inc.7,324$422.4K0.03%+55+0.8%Added
Sanders Morris Harris LLC7,484$427.1K0.07%+3,104+70.9%Added
Ulland Investment Advisors, LLC7,500$428.0K0.37%+2,500+50.0%Added
National Bank of Canada7,500$428.0K0.00%00.0%Unchanged
Glenview Trust Co7,500$428.0K0.01%+1,000+15.4%Added
First National Bank of Omaha7,489$431.9K0.01%−100−1.3%Reduced
Compass Financial Group, INC7,649$436.5K0.06%+7,649New
Pine Valley Investments Ltd Liability Co7,704$439.7K0.02%+18+0.2%Added
Advisor OS, LLC7,748$442.2K0.03%00.0%Unchanged
Fiduciary Financial Group, LLC7,785$444.3K0.06%−300−3.7%Reduced
Maia Wealth LLC7,810$445.7K0.08%+143+1.9%Added
Belfer Management LLC7,829$446.8K7.47%−20−0.3%Reduced
Golden State Equity Partners7,839$447.4K0.03%+7,839New
CWM, LLC7,894$450.5K0.00%−655−7.7%Reduced
VestGen Advisors, LLC8,287$450.8K0.01%+8,287New
Westco Advisory Services Inc7,915$451.7K0.29%+770+10.8%Added
NewEdge Wealth, LLC7,931$452.6K0.01%+1,194+17.7%Added
Signaturefd, LLC8,000$456.6K0.01%00.0%Unchanged
Matrix Private Capital Group LLC8,000$456.6K0.22%00.0%Unchanged
Quantum Financial Planning Services, Inc.8,000$456.6K0.16%00.0%Unchanged
Newman Dignan & Sheerar, Inc.8,100$462.3K0.10%00.0%Unchanged
Vestmark Advisory Solutions, Inc.8,229$469.7K0.01%+1,951+31.1%Added
MML Investors Services, LLC8,237$470.1K0.00%−2,530−23.5%Reduced
International Assets Investment Management, LLC8,424$471.1K0.03%+572+7.3%Added
Silver Oak Securities, Inc8,273$472.1K0.03%+143+1.8%Added
Stablepoint Partners, LLC8,283$472.7K0.07%00.0%Unchanged
Valeo Financial Advisors, LLC8,291$473.2K0.01%+422+5.4%Added
Carnegie Capital Asset Management, LLC8,316$474.6K0.01%−1,500−15.3%Reduced
Perigon Wealth Management, LLC8,331$475.4K0.01%−390−4.5%Reduced
Convergence Financial, LLC8,432$481.2K0.05%+8,432New
Citizens Financial Group Inc8,437$481.5K0.01%+144+1.7%Added
Foresight Global Investors, Inc.8,464$483.0K0.31%00.0%Unchanged
Chung Wu Investment Group, LLC8,500$485.1K0.42%00.0%Unchanged
Focus Financial Network, Inc.8,594$490.4K0.02%+400+4.9%Added
Csenge Advisory Group8,611$491.4K0.02%−81−0.9%Reduced
Farther Finance Advisors, LLC8,812$492.8K0.00%−4,484−33.7%Reduced
Strategic Financial Concepts, LLC8,670$494.8K0.12%+8,670New
Mount Yale Investment Advisors, LLC8,729$498.2K0.01%+2,451+39.0%Added
Argent Advisors, Inc.8,807$502.6K0.14%+8,807New
Ameritas Investment Partners, Inc.8,983$512.6K0.02%00.0%Unchanged
Wesbanco Bank Inc9,045$516.2K0.01%−1,000−10.0%Reduced