Institutional shares held 218 Million
4.43M calls
1.92M puts
Total value of holdings $11B
$224M calls
$96.9M puts
Market Cap $50.9B
1,006,280,000 Shares Out.
Institutional ownership 21.64%
# of Institutions 586


Latest Institutional Activity in MPLX

Top Purchases

Q1 2025
Walnut Private Equity Partners, LLC Shares Held: 211K ($10.7M)
Q1 2025
Greenup Street Wealth Management LLC Shares Held: 56.6K ($2.86M)
Q1 2025
Hennessy Advisors Inc Shares Held: 180K ($9.08M)
Q1 2025
Wealth Enhancement Advisory Services, LLC Shares Held: 109K ($5.51M)
Q1 2025
Capital Advisory Group Advisory Services, LLC Shares Held: 6.46K ($327K)

Top Sells

Q1 2025
Chickasaw Capital Management LLC Shares Held: 5.49M ($277M)
Q1 2025
Fort Washington Investment Advisors Inc Shares Held: 20.9K ($1.06M)
Q1 2025
Beach Investment Counsel Inc/Pa Shares Held: 848K ($42.9M)
Q1 2025
Adams Asset Advisors, LLC Shares Held: 196K ($9.9M)
Q1 2025
Exchange Traded Concepts, LLC Shares Held: 414K ($20.9M)

About MPLX

MPLX LP owns and operates midstream energy infrastructure and logistics assets primarily in the United States. It operates in two segments, Logistics and Storage, and Gathering and Processing. The company is involved in the gathering, processing, and transportation of natural gas; gathering, transportation, fractionation, exchange, 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 sale of residue gas and condensate. It also engages in the inland marine businesses comprising transportation of light products, heavy oils, crude oil, renewable fuels, chemicals, and feedstocks in the Mid-Continent and Gulf Coast regions, as well as owns and operates boats and barges, including third-party chartered equipment, and 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, the company operates terminal facilities for the receipt, storage, blending, additization, handling, and redelivery of refined petroleum products located through the pipeline, rail, marine, and over-the-road modes of 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.


Insider Transactions at MPLX

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
159K Shares
From 14 Insiders
Grant, award, or other acquisition 155K shares
Open market or private purchase 4K shares
Sell / Disposition
62.7K Shares
From 8 Insiders
Payment of exercise price or tax liability 58.7K shares
Open market or private sale 4K shares

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