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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
Wealth Alliance Advisory Group, LLC4,270$243.7K0.04%+4,270New
SeaCrest Wealth Management, LLC4,250$242.5K0.03%+4,250New
Stillwater Wealth Management Group4,200$239.7K0.15%−500−10.6%Reduced
North Star Investment Management Corp.4,189$239.1K0.01%+4,189New
Thoroughbred Financial Services, LLC4,173$238.0K0.01%+4,173New
Archford Capital Strategies, LLC4,107$234.4K0.03%00.0%Unchanged
HFG Advisors, Inc.4,050$231.1K0.16%00.0%Unchanged
RSM US Wealth Management LLC4,049$231.1K0.00%+208+5.4%Added
Shepherd Financial Partners LLC4,042$230.7K0.02%+74+1.9%Added
Clearstead Advisors, LLC4,038$230.4K0.00%00.0%Unchanged
Welch & Forbes LLC4,029$229.9K0.00%00.0%Unchanged
Cyndeo Wealth Partners, LLC4,015$229.1K0.01%+4,015New
XML Financial, LLC4,000$228.3K0.02%+4,000New
Second Line Capital, LLC4,053$228.1K0.04%+10.0%Added
MONECO Advisors, LLC3,967$226.4K0.02%−146−3.5%Reduced
Teamwork Financial Advisors, LLC3,910$223.1K0.02%00.0%Unchanged
Huntington National Bank3,890$222.0K0.00%+90+2.4%Added
Panoramic Investment Advisors, LLC3,877$221.3K0.12%−80−2.0%Reduced
Kingswood Wealth Advisors, LLC3,837$219.0K0.01%+3,837New
Hanover Advisors Inc3,832$218.7K0.09%+3,832New
Founders Financial Alliance, LLC3,830$218.6K0.04%+3,830New
Balboa Wealth Partners3,821$218.1K0.04%00.0%Unchanged
Douglass Winthrop Advisors, LLC3,800$216.9K0.00%00.0%Unchanged
MinichMacGregor Wealth Management, LLC3,758$214.5K0.04%−107−2.8%Reduced
Vivaldi Asset Management, LLC3,754$214.2K0.01%00.0%Unchanged
Principal Securities, Inc.3,705$211.5K0.00%+3,705New
Adirondack Trust Co3,700$211.1K0.07%00.0%Unchanged
ETF Portfolio Partners, Inc.3,692$210.7K0.06%+3,692New
Stonebridge Financial Group, LLC3,691$210.6K0.18%−1,309−26.2%Reduced
Plan Group Financial, LLC3,674$209.7K0.05%+3,674New
Waterloo Capital, L.P.3,662$209.0K0.01%+3,662New
Ascent Group, LLC3,650$208.3K0.01%+3,650New
Requisite Capital Management, LLC3,642$207.8K0.04%+3,642New
Naples Global Advisors, LLC3,600$205.5K0.01%+3,600New
Nova R Wealth, Inc.3,590$204.9K0.07%+3,590New
Vista Investment Partners LLC3,529$201.4K0.05%+3,529New
Thrivent Financial for Lutherans3,519$201.0K0.00%+3,519New
Colonial Trust Co3,492$199.3K0.03%00.0%Unchanged
Arlington Trust Co LLC3,300$194.6K0.02%00.0%Unchanged
Sound Income Strategies, LLC3,432$191.9K0.01%−314−8.4%Reduced
Ancora Advisors, LLC3,327$189.9K0.00%00.0%Unchanged
Nemes Rush Group LLC3,264$186.3K0.02%+131+4.2%Added
Virtus Investment Advisers, Inc.3,210$183.2K0.05%+185+6.1%Added
SOA Wealth Advisors, LLC.3,191$182.1K0.03%00.0%Unchanged
Rowland & Co Investment Counsel3,114$177.7K0.04%−1,627−34.3%Reduced
Tiaa Trust, National Association3,104$177.1K0.01%+3,104New
Federation des caisses Desjardins du Quebec3,068$175.1K0.00%−2,590−45.8%Reduced
Capital Advisors, Ltd. LLC2,939$168.0K0.02%+54+1.9%Added
Smithfield Trust Co2,725$155.0K0.01%00.0%Unchanged
Acumen Wealth Advisors, LLC2,603$148.6K0.04%00.0%Unchanged
Boyd Watterson Asset Management LLC2,465$140.7K0.04%00.0%Unchanged
Hilton Head Capital Partners, LLC2,442$139.4K0.08%−1,616−39.8%Reduced
Cary Street Partner Investment Advisory LLC2,400$137.0K0.03%+600+33.3%Added
Keating Financial Advisory Services, Inc.2,363$134.9K0.02%+2,363New
Crewe Advisors LLC2,211$126.2K0.01%00.0%Unchanged
Ritter Daniher Financial Advisory LLC2,173$124.0K0.02%+40+1.9%Added
Tower Research Capital LLC (TRC)2,154$122.9K0.00%+2,063+2,267.0%Added
Proffitt & Goodson Inc2,148$122.6K0.02%−70−3.2%Reduced
Clear Street Markets LLC2,100$119.8K0.06%−32,200−93.9%Reduced
Private Trust Co NA2,000$114.1K0.01%00.0%Unchanged
Anfield Capital Management, LLC1,801$102.8K0.03%00.0%Unchanged
SRS Capital Advisors, Inc.1,730$98.7K0.00%−2,399−58.1%Reduced
Russell Investments Group, Ltd.1,655$94.4K0.00%+31+1.9%Added
Tiaa-Cref Individual & Institutional Services, LLC1,649$94.1K0.00%+1,649New
CWM Advisors, LLC1,624$92.7K0.01%−23,658−93.6%Reduced
HM Payson & Co1,563$89.2K0.00%00.0%Unchanged
Heritage Wealth Advisors1,559$89.0K0.00%+107+7.4%Added
Global Assets Advisory, LLC1,538$87.7K0.03%+1,538New
Ronald Blue Trust, Inc.1,535$87.6K0.00%−25−1.6%Reduced
Fifth Third Bancorp1,499$85.5K0.00%00.0%Unchanged
Citizens National Bank Trust Department1,465$83.6K0.01%00.0%Unchanged
Central Trust Co1,457$83.2K0.00%00.0%Unchanged
Avalon Trust Co1,387$79.2K0.01%00.0%Unchanged
MCF Advisors LLC1,316$75.1K0.00%+1,316New
McIlrath & Eck, LLC1,298$74.1K0.01%−79−5.7%Reduced
Creative Financial Designs Inc1,260$71.9K0.00%00.0%Unchanged
Aventura Private Wealth, LLC1,243$70.9K0.03%00.0%Unchanged
Trust Co1,235$70.5K0.01%00.0%Unchanged
First Horizon Corp1,225$69.9K0.00%−90−6.8%Reduced
Geneos Wealth Management Inc.1,135$64.8K0.00%00.0%Unchanged
Activest Wealth Management1,065$60.8K0.01%+20+1.9%Added
Mather Group, LLC.1,064$60.7K0.00%+1,064New
1 North Wealth Services LLC1,060$60.5K0.02%+20+1.9%Added
Fortitude Family Office, LLC1,009$57.6K0.01%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
Vision Retirement, LLC998$57.0K0.02%00.0%Unchanged
Groesbeck Investment Management Corp910$52.0K0.10%00.0%Unchanged
Hickory Point Bank & Trust900$51.4K0.03%+900New
Quent Capital, LLC847$48.3K0.00%00.0%Unchanged
Prosperity Bancshares Inc812$46.3K0.04%00.0%Unchanged
Axiom Investment Management LLC800$45.7K0.03%+800New
Wiser Advisor Group LLC786$44.8K0.05%+15+1.9%Added
Root Financial Partners, LLC778$44.4K0.00%00.0%Unchanged
Trust Co of Toledo NA750$42.8K0.00%00.0%Unchanged
VSM Wealth Advisory, LLC712$40.6K0.01%+17+2.4%Added
Clear Investment Research, LLC700$39.9K0.06%+700New
Tanglewood Legacy Advisors, LLC696$39.7K0.01%00.0%Unchanged
Wolff Wiese Magana LLC659$37.6K0.02%+342+107.9%Added