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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
Mountain Hill Investment Partners Corp.2$1220.00%00.0%Unchanged
DHJJ Financial Advisors, Ltd.10$5710.00%00.0%Unchanged
Cedar Mountain Advisors, LLC11$6280.00%+11New
Gunpowder Capital Management, LLC dba Oliver Wealth Management14$7990.00%00.0%Unchanged
Abound Wealth Management16$9330.00%00.0%Unchanged
Investors Research Corp20$1.14K0.00%00.0%Unchanged
TD Private Client Wealth LLC23$1.31K0.00%00.0%Unchanged
Plante Moran Financial Advisors, LLC26$1.48K0.00%00.0%Unchanged
Penserra Capital Management LLC63$3.00K0.00%00.0%Unchanged
Rialto Wealth Management, LLC55$3.14K0.00%00.0%Unchanged
UBS Asset Management Americas Inc69$3.94K0.00%+69New
Center for Financial Planning, Inc.85$4.85K0.00%00.0%Unchanged
Kozak & Associates, Inc.96$5.36K0.00%+2+2.1%Added
Grove Bank & Trust100$5.71K0.00%00.0%Unchanged
Measured Wealth Private Client Group, LLC100$5.71K0.00%00.0%Unchanged
Bullseye Investment Management, LLC100$5.71K0.00%00.0%Unchanged
Evolution Wealth Management Inc.100$5.71K0.00%+100New
JPL Wealth Management, LLC100$5.71K0.00%+100New
Costello Asset Management, INC104$5.93K0.00%00.0%Unchanged
Signature Resources Capital Management, LLC108$6.16K0.00%+108New
Strengthening Families & Communities, LLC126$7.19K0.00%00.0%Unchanged
Westside Investment Management, Inc.130$7.27K0.00%+130New
Vision Financial Markets LLC133$7.56K0.01%+3+2.3%Added
Pacific Center for Financial Services149$8.50K0.00%+149New
Atlantic Union Bankshares Corp194$11.1K0.00%00.0%Unchanged
Chilton Capital Management LLC200$11.4K0.00%−450−69.2%Reduced
Bravera Wealth200$11.4K0.01%−27−11.9%Reduced
Country Trust Bank200$11.4K0.00%00.0%Unchanged
HHM Wealth Advisors, LLC200$11.4K0.00%00.0%Unchanged
Financial Network Wealth Advisors LLC210$12.0K0.01%+1+0.5%Added
Signature Equity Partners, LLC215$12.3K0.01%−766−78.1%Reduced
Curio Wealth, LLC263$15.0K0.01%00.0%Unchanged
Sunbelt Securities, Inc.288$16.4K0.00%+4+1.4%Added
Key Financial Inc300$17.1K0.00%00.0%Unchanged
C M Bidwell & Associates Ltd326$18.6K0.01%00.0%Unchanged
Twin Peaks Wealth Advisors, LLC332$18.9K0.00%+332New
Ares Financial Consulting, LLC341$19.1K0.01%00.0%Unchanged
Archer Investment Corp354$20.2K0.00%+6+1.7%Added
Pacifica Partners Inc.400$22.8K0.01%00.0%Unchanged
Elequin Capital LP417$23.8K0.00%+417New
Ramirez Asset Management, Inc.450$25.7K0.00%00.0%Unchanged
Private Wealth Asset Management, LLC500$28.5K0.00%00.0%Unchanged
PlanVest Financial, Inc524$29.9K0.02%+524New
EverSource Wealth Advisors, LLC528$30.1K0.00%00.0%Unchanged
Assetmark, Inc559$31.9K0.00%+251+81.5%Added
Caldwell Trust Co635$36.2K0.00%00.0%Unchanged
Wolff Wiese Magana LLC659$37.6K0.02%+342+107.9%Added
Tanglewood Legacy Advisors, LLC696$39.7K0.01%00.0%Unchanged
Clear Investment Research, LLC700$39.9K0.06%+700New
VSM Wealth Advisory, LLC712$40.6K0.01%+17+2.4%Added
Trust Co of Toledo NA750$42.8K0.00%00.0%Unchanged
Root Financial Partners, LLC778$44.4K0.00%00.0%Unchanged
Wiser Advisor Group LLC786$44.8K0.05%+15+1.9%Added
Axiom Investment Management LLC800$45.7K0.03%+800New
Prosperity Bancshares Inc812$46.3K0.04%00.0%Unchanged
Quent Capital, LLC847$48.3K0.00%00.0%Unchanged
Hickory Point Bank & Trust900$51.4K0.03%+900New
Groesbeck Investment Management Corp910$52.0K0.10%00.0%Unchanged
Vision Retirement, LLC998$57.0K0.02%00.0%Unchanged
Harbor Investment Advisory, LLC1,000$57.1K0.00%00.0%Unchanged
WFA of San Diego, LLC1,000$57.1K0.05%00.0%Unchanged
Atlantic Private Wealth, LLC1,000$57.1K0.04%00.0%Unchanged
Fortitude Family Office, LLC1,009$57.6K0.01%00.0%Unchanged
1 North Wealth Services LLC1,060$60.5K0.02%+20+1.9%Added
Mather Group, LLC.1,064$60.7K0.00%+1,064New
Activest Wealth Management1,065$60.8K0.01%+20+1.9%Added
Geneos Wealth Management Inc.1,135$64.8K0.00%00.0%Unchanged
First Horizon Corp1,225$69.9K0.00%−90−6.8%Reduced
Trust Co1,235$70.5K0.01%00.0%Unchanged
Aventura Private Wealth, LLC1,243$70.9K0.03%00.0%Unchanged
Creative Financial Designs Inc1,260$71.9K0.00%00.0%Unchanged
McIlrath & Eck, LLC1,298$74.1K0.01%−79−5.7%Reduced
MCF Advisors LLC1,316$75.1K0.00%+1,316New
Avalon Trust Co1,387$79.2K0.01%00.0%Unchanged
Central Trust Co1,457$83.2K0.00%00.0%Unchanged
Citizens National Bank Trust Department1,465$83.6K0.01%00.0%Unchanged
Fifth Third Bancorp1,499$85.5K0.00%00.0%Unchanged
Ronald Blue Trust, Inc.1,535$87.6K0.00%−25−1.6%Reduced
Global Assets Advisory, LLC1,538$87.7K0.03%+1,538New
Heritage Wealth Advisors1,559$89.0K0.00%+107+7.4%Added
HM Payson & Co1,563$89.2K0.00%00.0%Unchanged
CWM Advisors, LLC1,624$92.7K0.01%−23,658−93.6%Reduced
Tiaa-Cref Individual & Institutional Services, LLC1,649$94.1K0.00%+1,649New
Russell Investments Group, Ltd.1,655$94.4K0.00%+31+1.9%Added
SRS Capital Advisors, Inc.1,730$98.7K0.00%−2,399−58.1%Reduced
Anfield Capital Management, LLC1,801$102.8K0.03%00.0%Unchanged
Private Trust Co NA2,000$114.1K0.01%00.0%Unchanged
Clear Street Markets LLC2,100$119.8K0.06%−32,200−93.9%Reduced
Proffitt & Goodson Inc2,148$122.6K0.02%−70−3.2%Reduced
Tower Research Capital LLC (TRC)2,154$122.9K0.00%+2,063+2,267.0%Added
Ritter Daniher Financial Advisory LLC2,173$124.0K0.02%+40+1.9%Added
Crewe Advisors LLC2,211$126.2K0.01%00.0%Unchanged
Keating Financial Advisory Services, Inc.2,363$134.9K0.02%+2,363New
Cary Street Partner Investment Advisory LLC2,400$137.0K0.03%+600+33.3%Added
Hilton Head Capital Partners, LLC2,442$139.4K0.08%−1,616−39.8%Reduced
Boyd Watterson Asset Management LLC2,465$140.7K0.04%00.0%Unchanged
Acumen Wealth Advisors, LLC2,603$148.6K0.04%00.0%Unchanged
Smithfield Trust Co2,725$155.0K0.01%00.0%Unchanged
Capital Advisors, Ltd. LLC2,939$168.0K0.02%+54+1.9%Added
Federation des caisses Desjardins du Quebec3,068$175.1K0.00%−2,590−45.8%Reduced