Mplx Lp (MPLX) stock price is $58.17, up 0.02% on the day, as of Oct 19, 2026. It has a market cap of $59.04Bn and a P/E ratio of 12.44, and is classified in the Oil and Gas Pipelines industry (Energy sector).
Enterprise Value
Margins
P/FCF
Key Stats
Market Cap59.04 Bn
P/E12.44
P/S4.47
Div. Yield0.07
Total Debt (Qtr)26.01 Bn
Revenue Growth (1y) (Qtr)10.29
Add ratio to table…
About
MPLX LP is a diversified large cap master limited partnership formed by MPC in 2012 that owns and operates midstream energy infrastructure and logistics assets and provides fuels distribution services. Its assets include a network of crude oil and refined product pipelines an inland marine business light product asphalt heavy oil and marine terminals storage caverns refinery tanks docks loading racks and associated piping crude oil and natural gas gathering systems and…
MPLX LP is a diversified large cap master limited partnership formed by MPC in 2012 that owns and operates midstream energy infrastructure and logistics assets and provides fuels distribution services. Its assets include a network of crude oil and refined product pipelines an inland marine business light product asphalt heavy oil and marine terminals storage caverns refinery tanks docks loading racks and associated piping crude oil and natural gas gathering systems and pipelines and natural gas and NGL treating processing and fractionation facilities positioned throughout the United States.
MPLX LP generates revenue primarily through tariffs for gathering and transporting crude oil refined products other hydrocarbon based products and renewables through its pipelines and barge docks. It also earns fees for storing crude oil refined products and renewables at its storage facilities. The marine business generates revenue under a fee based capacity contract with MPC. The fuels distribution business provides scheduling and marketing services for MPC s products and earns revenue based on the volume of MPC s products sold each month. Additionally the company operates pipelines owned by MPC or in joint interest and receives operating fees for those assets. In the Natural Gas and NGL Services segment revenue comes from gathering treating processing and transportation of natural gas and NGLs as well as transportation fractionation storage and marketing of NGLs and from product sales related to NGL transactions.
The company operates through the following segments: Crude Oil and Products Logistics and Natural Gas and NGL Services.
Crude Oil and Products Logistics includes the gathering transportation storage and distribution of crude oil refined products other hydrocarbon based products and renewables; its assets consist of 14,853 miles of wholly and jointly owned pipelines refining logistics at 13 refineries 88 terminals including rail and truck racks one export terminal storage caverns tank farm assets an inland marine business and a fuels distribution business; revenue is generated by charging tariffs for pipeline transport fees for storage marine fee based capacity contracts fuels distribution fees based on MPC s product volumes and operating fees for pipelines operated for MPC or joint interest.
Natural Gas and NGL Services gathers treats processes and transports natural gas; transports fractionates stores and markets NGLs; as of December 31 2025 the segment had approximately 9.4 Bcf per day of gas gathering capacity 11.2 Bcf per day of natural gas processing capacity and 819 mbpd of fractionation and de ethaneization capacity; it also owns or operates about 1,401 miles of NGL pipelines; revenue is earned from fee based percent of proceeds keep whole and purchase arrangements product sales from NGL transactions and services provided under various contract types with producers and third parties.
MPLX LP holds a strong position in the US midstream energy sector due to its extensive asset base and its strategic relationship with MPC which is one of the largest refiners in the country. The company benefits from long term fee based contracts minimum volume commitments and fee for capacity arrangements that provide stable and predictable cash flows. Competitors in the Crude Oil and Products Logistics segment include independent terminal and pipeline companies integrated petroleum companies refining and marketing companies distribution companies and wholesale petroleum distributors. In the Natural Gas and NGL Services segment competitors consist of other natural gas midstream providers major integrated oil companies independent exploration and production companies interstate and intrastate pipelines and marine and land based transporters of natural gas and NGLs. MPLX LP s competitive advantages include its access to both NGL and natural gas markets its critical connections to MPC s refining infrastructure its strategic gathering and processing agreements with key producers and the long term nature of many of its contracts which together support durable cash flow growth and cost competitiveness.
The company s primary customer is MPC which supplied approximately 48 percent of total revenues and other income in 2025 mainly through the Crude Oil and Products Logistics segment. In addition MPLX LP serves a broad range of producer customers operating in crude oil and natural gas resource plays including the Marcellus Shale Permian Basin Utica Shale STACK Shale and Bakken Shale among others. The Natural Gas and NGL Services segment also derives revenue from various third party customers in the Southwest and Marcellus regions whose specific names are not disclosed in the filing.
Sector:EnergySector rationaleMPLX LP operates midstream energy infrastructure, including crude oil and refined product pipelines, natural gas gathering systems, and NGL processing facilities. Its revenue is derived from tariffs and fees for transporting, storing, and processing hydrocarbon molecules, which aligns exactly with the Energy sector's scope for Oil and Gas Pipelines, LNG and Gas Processing, and Fuel Distribution.Industries:Oil and Gas PipelinesOil and Gas PipelinesPrimaryMPLX LP owns and operates a vast network of 14,853 miles of crude oil and refined product pipelines, as well as 88 terminals and storage caverns. Its primary revenue is generated through fee-based volumetric tariffs for gathering, transporting, and storing these energy commodities.LNG and Gas ProcessingLNG and Gas ProcessingSecondaryThe company operates a substantial Natural Gas and NGL Services segment with 11.2 Bcf per day of natural gas processing capacity and 819 mbpd of fractionation and de-ethanization capacity.Fuel DistributionFuel DistributionSecondaryThe company has a dedicated fuels distribution business that provides scheduling and marketing services for MPC's products, earning revenue based on the volume of products sold.Classified using BQ-MICSCIK: 0001552000
Bull & bear
Investment Thesis
▲ Bull case
MPLX's strategic focus on high-growth basins like the Permian and Marcellus positions it to capitalize on structural demand for natural gas and NGLs, with 90% of its $2.4 billion organic growth capital plan directed toward these opportunities, which are expected to generate mid-teens returns and drive continued mid-single-digit EBITDA growth beyond 2026. The company's integrated value chain approach—spanning gathering, processing, treating, fractionation, and export infrastructure—creates durable competitive advantages by locking in long-term producer contracts and ensuring high asset utilization, as evidenced by Marcellus processing utilization at 94% in Q1 2026, signaling strong underlying demand that will be met by upcoming projects like Harmon Creek III and Secretariat II. This integration reduces reliance on volatile commodity prices through fee-based revenue streams, while expanding export capacity via the Gulf Coast LPG Export Terminal JV and Blackcomb pipeline enhances access to premium international markets, supporting pricing power and volume growth even amid domestic price fluctuations.
The back-half-weighted EBITDA ramp in 2026, driven by projects such as Secretariat I (already in service), Harmon Creek III (3Q26), Titan gas treating complex expansion (4Q26), and Blackcomb pipeline (4Q26), provides a clear line of sight to growth exceeding 2025 levels, with management noting a typical 9- to 12-month ramp for new assets that will translate into meaningful EBITDA contribution in the latter half of the year. This phased rollout aligns with seasonal strength in energy demand and allows MPLX to benefit from increasing producer activity in sour gas windows of the Delaware Basin, where treated volumes already exceeded 150 MMcf/d in Q1 2026 and are set to expand to over 400 MMcf/d by year-end, capturing value from underserved infrastructure needs. The expansion of the BANGL pipeline to 300 mbpd and growth in Gulf Coast fractionation capacity further de-risk NGL logistics, ensuring takeaway capacity keeps pace with rising in-basin volumes and supporting sustained throughput growth across the value chain.
MPLX's strong financial foundation—including $1.5 billion in cash, $2.0 billion available on its revolving credit facility, and $1.5 billion via intercompany loan with MPC—combined with a leverage ratio of 3.7x (within management's target range of up to 4.0x), provides ample flexibility to fund growth initiatives, maintain distribution coverage above 1.3x, and continue returning capital via distributions and buybacks, with $1.1 billion remaining under repurchase authorizations as of March 31, 2026. The company's commitment to 12.5% annual distribution growth for 2026 and 2027 is underpinned by expected cash flow growth from newly operational assets, and its history of executing on capital allocation priorities—prioritizing distributions as the primary return mechanism while using buybacks flexibly—demonstrates disciplined stewardship that supports unitholder value creation even amid near-term volatility in crude prices or refining activity.
MPLX's strategic focus on high-growth basins like the Permian and Marcellus positions it to capitalize on structural demand for natural gas and NGLs, with 90% of its $2.4 billion organic growth capital plan directed toward these opportunities, which are expected to generate mid-teens returns and drive continued mid-single-digit EBITDA growth beyond 2026. The company's integrated value chain approach—spanning gathering, processing, treating, fractionation, and export infrastructure—creates durable competitive advantages by locking in long-term producer contracts and ensuring high asset utilization, as evidenced by Marcellus processing utilization at 94% in Q1 2026, signaling strong underlying demand that will be met by upcoming projects like Harmon Creek III and Secretariat II. This integration reduces reliance on volatile commodity prices through fee-based revenue streams, while expanding export capacity via the Gulf Coast LPG Export Terminal JV and Blackcomb pipeline enhances access to premium international markets, supporting pricing power and volume growth even amid domestic price fluctuations.
The back-half-weighted EBITDA ramp in 2026, driven by projects such as Secretariat I (already in service), Harmon Creek III (3Q26), Titan gas treating complex expansion (4Q26), and Blackcomb pipeline (4Q26), provides a clear line of sight to growth exceeding 2025 levels, with management noting a typical 9- to 12-month ramp for new assets that will translate into meaningful EBITDA contribution in the latter half of the year. This phased rollout aligns with seasonal strength in energy demand and allows MPLX to benefit from increasing producer activity in sour gas windows of the Delaware Basin, where treated volumes already exceeded 150 MMcf/d in Q1 2026 and are set to expand to over 400 MMcf/d by year-end, capturing value from underserved infrastructure needs. The expansion of the BANGL pipeline to 300 mbpd and growth in Gulf Coast fractionation capacity further de-risk NGL logistics, ensuring takeaway capacity keeps pace with rising in-basin volumes and supporting sustained throughput growth across the value chain.
MPLX's strong financial foundation—including $1.5 billion in cash, $2.0 billion available on its revolving credit facility, and $1.5 billion via intercompany loan with MPC—combined with a leverage ratio of 3.7x (within management's target range of up to 4.0x), provides ample flexibility to fund growth initiatives, maintain distribution coverage above 1.3x, and continue returning capital via distributions and buybacks, with $1.1 billion remaining under repurchase authorizations as of March 31, 2026. The company's commitment to 12.5% annual distribution growth for 2026 and 2027 is underpinned by expected cash flow growth from newly operational assets, and its history of executing on capital allocation priorities—prioritizing distributions as the primary return mechanism while using buybacks flexibly—demonstrates disciplined stewardship that supports unitholder value creation even amid near-term volatility in crude prices or refining activity.
MPLX's Natural Gas and NGL Services segment experienced a $42 million year-over-year decline in adjusted EBITDA in Q1 2026, driven by the lapse of a $37 million non-recurring benefit from a customer agreement in 2025, lower NGL prices, and higher operating expenses—factors that more than offset growth from equity affiliates and increased volumes, highlighting the segment's vulnerability to episodic revenue items and commodity price sensitivity despite management's emphasis on fee-based structures. The company's hedge program, while mitigating short-term NGL price exposure (with an economic hedge on 80% of its $20 million annual EBITDA impact per $0.05 NGL price change), resulted in a $56 million negative mark-to-market in Q1 2026, which, although expected to offset over time, reflects ongoing earnings volatility tied to commodity markets that contradicts the narrative of a purely stable, fee-driven business model.
Crude Oil and Products Logistics segment performance remains fragile, with pipeline and terminal volumes each down 4% year-over-year in Q1 2026 due to Marathon's refining turnarounds and maintenance activities in the Midwest and Gulf Coast, as well as less favorable market dynamics, revealing MPLX's continued dependence on its parent company's refinery utilization and exposing it to downstream demand shocks that are outside its control; although higher rates partially offset throughput declines, the segment's modest $14 million EBITDA gain underscores limited pricing power and susceptibility to cyclical refining activity, which could worsen if Marathon pursues further optimization or divestments amid shifting energy policies or margin pressures.
Despite ongoing projects, MPLX faces execution and timing risks that could delay EBITDA ramp-up, as seen in the reliance on third- and fourth-quarter 2026 in-service dates for Harmon Creek III, Titan complex expansion, BANGL pipeline, and Blackcomb pipeline—any slippage due to permitting delays, labor shortages, or supply chain constraints (particularly for specialized sour gas treating equipment) would push EBITDA contribution into 2027, undermining confidence in 2026 growth targets and potentially forcing revisions to distribution growth plans, especially given that distribution coverage was already 1.3x in Q1 2026 (down from 1.5x a year ago) and leaves little room for error if cash flow generation lags behind expectations.
MPLX's Natural Gas and NGL Services segment experienced a $42 million year-over-year decline in adjusted EBITDA in Q1 2026, driven by the lapse of a $37 million non-recurring benefit from a customer agreement in 2025, lower NGL prices, and higher operating expenses—factors that more than offset growth from equity affiliates and increased volumes, highlighting the segment's vulnerability to episodic revenue items and commodity price sensitivity despite management's emphasis on fee-based structures. The company's hedge program, while mitigating short-term NGL price exposure (with an economic hedge on 80% of its $20 million annual EBITDA impact per $0.05 NGL price change), resulted in a $56 million negative mark-to-market in Q1 2026, which, although expected to offset over time, reflects ongoing earnings volatility tied to commodity markets that contradicts the narrative of a purely stable, fee-driven business model.
Crude Oil and Products Logistics segment performance remains fragile, with pipeline and terminal volumes each down 4% year-over-year in Q1 2026 due to Marathon's refining turnarounds and maintenance activities in the Midwest and Gulf Coast, as well as less favorable market dynamics, revealing MPLX's continued dependence on its parent company's refinery utilization and exposing it to downstream demand shocks that are outside its control; although higher rates partially offset throughput declines, the segment's modest $14 million EBITDA gain underscores limited pricing power and susceptibility to cyclical refining activity, which could worsen if Marathon pursues further optimization or divestments amid shifting energy policies or margin pressures.
Despite ongoing projects, MPLX faces execution and timing risks that could delay EBITDA ramp-up, as seen in the reliance on third- and fourth-quarter 2026 in-service dates for Harmon Creek III, Titan complex expansion, BANGL pipeline, and Blackcomb pipeline—any slippage due to permitting delays, labor shortages, or supply chain constraints (particularly for specialized sour gas treating equipment) would push EBITDA contribution into 2027, undermining confidence in 2026 growth targets and potentially forcing revisions to distribution growth plans, especially given that distribution coverage was already 1.3x in Q1 2026 (down from 1.5x a year ago) and leaves little room for error if cash flow generation lags behind expectations.