MPLX LP owns and operates midstream energy infrastructure and logistics assets primarily in the United States. It operates in two segments, Crude Oil and Products Logistics; and Natural Gas and NGL Services. The company is involved in the gathering, processing, and transportation of natural gas; gathering, transportation, fractionation, storage, and marketing of natural gas liquids; gathering, storage, transportation, and distribution of crude oil and refined products, as well as other hydrocarbon-based products and renewables; and sale of residue gas and condensate. It also engages in inland marine businesses, comprising fleet of boats and barges transport light products, heavy oils, crude oil, renewable fuels, chemicals, and feedstocks in the Mid-Continent and Gulf Coast regions, as well as a marine repair facility located on the Ohio River; and distribution of fuel, as well as operates refining logistics, terminals, rail facilities, and storage caverns. In addition, it operates terminal facilities for the receipt, storage, blending, additization, handling, and redelivery of refined petroleum products through the pipeline, rail, marine, and truck transportation. MPLX GP LLC acts as the general partner of MPLX LP. The company was incorporated in 2012 and is headquartered in Findlay, Ohio. MPLX LP operates as a subsidiary of Marathon Petroleum Corporation.

MPLX LP (MPLX) Stock Price & Market Analysis
MPLX · NYSE · Oil & Gas Midstream
$56.38
▲ +$0.0300(+0.05%)4:00 PM ET - vs previous closeQuote as of Oct 2, 2026, 4:00 PM EDT
Regular-session close · Oct 2, 2026, 4:00 PM EDT.
Yahoo Finance · delayed, minutes not stated · as of Oct 2, 2026, 4:00 PM EDT · current source
Long-term rangesAvailable historyHide
Available history: 2012-10-26–2026-10-02. This is the supplied data window, not a verified inception date. Range extremes use intraday highs/lows where supplied, otherwise closes. Provider-reported; adjustment basis unspecified. The separate 52-week range uses Yahoo Finance figures; its adjustment basis is unspecified.
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PriceAt closeLast traded
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Company · Profile
About MPLX LP (MPLX)
Sector, leadership, and how MPLX LP earns its revenue.
Energy
Company · Profile
About MPLX LP (MPLX)
Sector, leadership, and how MPLX LP earns its revenue.
MPLX LP
NYSE · MPLX · US
Company narrative is editorial context. Source observation date: 2026-10-03T20:17:06.343Z. Narratives and leadership records are excluded from current quality ratings.
- Sector
- Energy
- Industry
- Oil & Gas Midstream
- Headquarters
- Findlay, OH, United States
- Country
- US
- CEO
- Ms. Maryann T. Mannen
- Exchange
- NYSE
Business model & operating evidence
AI business exposure
- Revenue exposure
- AI-specific revenue is not separated in the available company statements.
- Capital-spending dependency
- No reviewed quantitative dependency model is available.
- Compute role
- See the sourced business description; AI labels do not establish compute revenue.
- Platform examples
- An exhaustive, consistently defined product inventory is unavailable.
- Ecosystem links
- Supplier and customer links require reviewed disclosures.
Narrative versus numbers
Demand is expanding
Insufficient evidence: Unavailable
Year-over-year growth in the latest quarter. This is not the fiscal-year revenue change in the snapshot above. · Company financial statements · date unavailable
Growth produces accounting profit
Insufficient evidence: Unavailable
Reported-period net margin. A positive figure supports accounting profitability, not cash generation. · Company financial statements · date unavailable
The business generates cash after investment
Insufficient evidence: Unavailable
Latest reported free cash flow. It is not a forecast and it is not the fiscal-year snapshot. · Company financial statements · date unavailable
These are explicit tests of individual claims, not an overall bull/bear rating. Demand growth can coexist with valuation, concentration and financing risk.
Operating measures
Comparable operating figures are unavailable for this company.
Leadership
CEO: Ms. Maryann T. Mannen
Source: Yahoo Finance · 2026-10-03T20:17:06.343Z
Ownership filings and insider activityCompetitors & comparisons
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Governance & sustainability
All data sources
Search the dated figures used for this view. Each entry identifies its units, reporting period and calculation status.
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Next open: 2026-10-05 · 9:30 AM America/New_York
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