MPLX Lp (MPLX) Stock

About MPLX Lp

MPLX LP, incorporated in 2012 and headquartered in Findlay, Ohio, operates as a subsidiary of Marathon Petroleum Corporation, with MPLX GP LLC serving as its general partner. The company is a prominent owner and operator of midstream energy infrastructure and logistics assets primarily across the United States. Its business is segmented into Logistics and Storage, and Gathering and Processing. MPLX's extensive operations involve the gathering, processing, and transportation of natural gas, alongside the gathering, transportation, fractionation, exchange, storage, and marketing of natural gas liquids. It also handles the collection, storage, transportation, and distribution of crude oil, refined products, and other hydrocarbon-based goods, including the sale of residue gas and condensate. Furthermore, the company manages inland marine businesses, focusing on the transportation of light products, heavy oils, crude oil, renewable fuels, chemicals, and feedstocks within the Mid-Continent and Gulf Coast regions, utilizing its owned and third-party chartered boats and barges, and maintaining a marine repair facility on the Ohio River. Complementing these activities, MPLX oversees fuel distribution, refining logistics, terminals, rail facilities, and storage caverns, and operates specialized terminal facilities for the receipt, storage, blending, additization, handling, and redelivery of refined petroleum products through various modes including pipeline, rail, marine, and over-the-road transport.

MPLX Lp is headquartered in US.

MPLX Lp (MPLX) stock trades at $56.72 with a market capitalization of $57.55B. The stock is valued at a price-to-earnings (P/E) ratio of 12.25, price-to-book of 4.10, price-to-sales of 4.65. Over the past 52 weeks the stock has ranged between $47.80 and $59.98, and currently trades 5.4% below its 52-week high.

On profitability, MPLX Lp generates a return on equity (ROE) of 33.27%, above the typical market range of roughly 12-15%, return on capital employed of 13.70%, an operating margin of 44.04%, a net profit margin of 37.99%.

In its most recent fiscal year, MPLX Lp reported annual revenue of $11.8B, net profit of $4.9B. Revenue grew at an average annual rate of 7.1% over the last 5 fiscal years.

The balance sheet shows a debt-to-equity ratio of 1.86, a current ratio of 1.10, total assets of $43.0B, $2.1B in cash and equivalents.

MPLX has an average daily trading volume of 1,871,119 shares, a beta of 0.45 (historically less volatile than the overall market).

Official website: www.mplx.com

MPLX Lp by the numbers, 2016–2025

Between 2016 and 2025 MPLX Lp reported revenue of $3.0B rising to $11.8B, a change of +292.6% across 10 years. Compounded, revenue has grown 7.1% a year over five years, 3.9% over three, 8.4% over the last twelve months. Net profit rose to $4.9B.

Operating margin went from 22.7% in 2016 to 40.3% in 2025, a gain of 17.6 percentage points. The most recent net margin is 37.99%. On a trailing twelve-month basis to Mar '26, revenue is $12.4B and net profit $4.7B.

Borrowings rose from $4.4B to $26.2B, cash on hand is $1.5B, cash from operations was $5.9B in the latest year, positive in 10 of the last 10.

Return on equity has averaged 29.7% over five years, and was 34.4% in the most recent year.

The share price itself has compounded at 26.4% a year over five years, 28.3% over three, 21.6% over the last year. Past price movement is history, not a forecast.

Figures are as reported and in the company's own reporting currency. They describe what has already happened and carry no implication about what follows.

MPLX Lp (MPLX) — frequently asked questions