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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; 641 institutions reported holding it in 13F filings for Q2 2026, worth $11.1B in total; Appaloosa is the only superinvestor holding it.

Key figures

Market capClose on Nov 9, 2026
$57.5B
Insider buysOpen market, last 90 days
0
Insider sellsOpen market, last 90 days
0
13F holdersQ2 2026, 0 vs. previous quarter
641
13F valueReported value at the end of Q2 2026
$11.1B
Superinvestors holdingAt the end of Q2 2026
1

Price chart

From SEC filings, in USD.

Revenue, FY2025
$13.0B
+8.9% year over year
Net income, FY2025
$4.95B
+13.7% year over year
Free cash flow, FY2025
$4.10B
−16.1% year over year
Revenue, Q3 FY2026
$3.60B
−0.4% year over year

Revenue flow, FY2025

Green is profit; orange is costs, expenses and taxes. Percentages are shares of revenue.

Net income for FY2025: $4.95B (38.1% of revenue).

Short interest

See short data

From FINRA, settlement date Oct 15, 2026.

Short interest
6.48M
Shares sold short
Change
−203.5K
−3.0% vs. previous
Days to cover
5.23
At average daily volume

Superinvestors holding MPLX, Q2 2026

Go to the superinvestors tab

1 superinvestor reports holding MPLX LP on Form 13F. Percentages are the stock's share of each portfolio.

Appaloosa

David Tepper

0.4%

MPLX LP's share of the portfolio

Shares
502,460
Value
$28.3M

Latest insider trades

See all insider trades

Open-market purchases and sales by MPLX LP insiders from Form 4, newest first.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Mar 11, 2025 (view filing)Mar 74 daysLyon Shawn MSenior VP, Log. & StoragePPurchaseCommon Units (Limited Partner Interests)+4.00K$52.75+$211.0K+18.8%25.3K after
Nov 20, 2024 (view filing)Nov 182 daysHagedorn Carl KristopherExec VP & Chief Fin OfcSSaleCommon Units (Limited Partner Interests)−4.00K$47.24−$189.0K−21.3%14.8K after
Apr 21, 2022 (view filing)Apr 192 daysFloerke Gregory ScottExec. VP and COOSSaleCommon Units (Limited Partner Interests)−2.50K$35.00−$87.5K−3.0%80.2K after
Feb 9, 2022 (view filing)Feb 72 daysFloerke Gregory ScottExec. VP and COOSSaleCommon Units (Limited Partner Interests)−2.50K$33.20−$83.0K−3.2%76.8K after
Feb 3, 2022 (view filing)Feb 1-22 daysSemple Frank MDirectorSSaleCommon Units (Limited Partner Interests)−56.0K$33.50−$1.88M−14.4%333.3K after2 lots
Nov 10, 2021 (view filing)Nov 82 daysSemple Frank MDirectorSSaleCommon Units (Limited Partner Interests)−27.0K$32.00−$864.0K−6.5%389.3K after
Nov 10, 2021 (view filing)Nov 82 daysFloerke Gregory ScottExec. VP and COOSSaleCommon Units (Limited Partner Interests)−5.00K$31.26−$156.3K−6.0%78.9K after2 lots

Top 10 13F holders, Q2 2026

See all 641 holders

The largest institutional positions in MPLX LP at the end of Q2 2026; share changes are against Q1 2026.

Institutions holding MPLX in Q2 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Alps Advisors Inc28,601,592$1.61B7.55%+1,530,630+5.7%Added
Invesco Ltd.18,273,448$1.03B0.08%+6,8420.0%Added
Blackstone Group Inc.12,956,943$729.9M1.99%−2,393,740−15.6%Reduced
Goldman Sachs Group Inc11,329,340$638.2M0.07%−1,178,199−9.4%Reduced
Tortoise Capital Advisors, L.L.C.10,500,469$591.5M6.01%−2,760,115−20.8%Reduced
Mirae Asset Global ETFs Holdings Ltd.8,011,582$451.3M0.54%+692,332+9.5%Added
Kayne Anderson Capital Advisors LP5,862,925$330.3M6.48%−963,642−14.1%Reduced
Energy Income Partners, LLC5,380,295$303.1M4.77%+222,817+4.3%Added
Morgan Stanley5,275,829$297.2M0.02%+311,630+6.3%Added
UBS Group AG5,259,274$296.3M0.05%+25,762+0.5%Added

2 members of Congress reported 22 trades in MPLX LP since 2020. Newest filings:

  1. Mark E. Green

    House · TN · Jan 3, 2022

    Sell$500K-$1M

  2. Mark E. Green

    House · TN · Nov 18, 2021

    Buy$500K-$1M

  3. Mark E. Green

    House · TN · May 17, 2021

    Sell$500K-$1M

  4. David Perdue

    Senate · GA · May 2, 2021

    Sell (partial)$1K-$15K

  5. David Perdue

    Senate · GA · May 2, 2021

    Sell (full)$15K-$50K