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Also trades as: MPLXP (NYSE) · $vol 118M

MPLX NYSE

MPLX Lp
1W: +0.8% 1M: +3.2% 3M: +0.8% YTD: +11.0% 1Y: +17.7% 3Y: +93.0% 5Y: +178.3%
$58.11
-0.54 (-0.92%)
After Hours: $58.24 (+0.13, +0.22%)
Weekly Expected Move ±2.4%
$56 $58 $59 $61 $62
NYSE · Energy · Oil & Gas Midstream · Tech Score Buy · Power 64 · $58.9B mcap · 363M float · 0.379% daily turnover · Short 63% of daily vol
Credit Risk of going bust: lower than 87% of companies Debt: 30.3% of company value Bonds: $684.1M held by 578 funds, 99 bp over Treasuries → details ▾
Of US companies ranked in the safest four tenths, about 1 in 3,500 filed for bankruptcy within a year (2020-2025).
If the stock fell to about $1.03 (down 98%), MPLX Lp would be worth roughly what it owes.
Total debt $25.89B against a stock market value of $59.46B.
Distance to default 12.28 (Merton model): prices to 2026-10-26, balance sheet 2026-06-30, debt counted $13.45B (short-term plus half of long-term), stock volatility 17.0%; Altman Z'' 1.38. A ranking and a back-test, not a forecast.
Bond figures are fund-reported marks (SEC N-PORT) as of Jul 2026. How these are computed.
Smart Money Score
Watch 25
Insider—
Congress—
ETF Holdings—
Key Statistics
Market Cap$58.9B
52W Range50.22-60.95
Volume1,536,903
Avg Volume1,373,640
Beta0.48
Dividend$4.31
Analyst Ratings
19 Buy 9 Hold 0 Sell
Consensus Buy
Company Info
CEOMaryann T. Mannen
Employees5,762
SectorEnergy
IndustryOil & Gas Midstream
IPO Date2012-10-26
Websitemplx.com
200 East Hardin Street
Findlay, OH 45840-3229
US
419 421 2414
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.

Recent Insider Trades

NameTypeSharesPriceDate
STICE J MICHAEL A-Award 983 — 2026-08-14
SEMPLE FRANK M A-Award 1,073 — 2026-08-14
HELMS CHRISTOPHER A A-Award 1,337 — 2026-08-14
Breves Christine S A-Award 219 — 2026-08-14
Walker Ray N JR A-Award 82 — 2026-08-14

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For informational purposes only. Not investment advice. Data sourced from SEC filings. Privacy Terms