Institutional shares held 217 Million
4.43M calls
1.93M puts
Total value of holdings $11B
$226M calls
$98.5M puts
Market Cap $51.2B
1,006,280,000 Shares Out.
Institutional ownership 21.55%
# of Institutions 607


Latest Institutional Activity in MPLX

Top Purchases

Q1 2025
Cushing Asset Management, LP Shares Held: 1.82M ($92.8M)
Q1 2025
Walnut Private Equity Partners, LLC Shares Held: 211K ($10.7M)
Q1 2025
Greenup Street Wealth Management LLC Shares Held: 56.6K ($2.88M)
Q1 2025
Catalyst Capital Advisors LLC Shares Held: 350K ($17.8M)
Q1 2025
Prevail Innovative Wealth Advisors, LLC Shares Held: 40.5K ($2.06M)

Top Sells

Q1 2025
Alps Advisors Inc Shares Held: 25.8M ($1.31B)
Q1 2025
Oppenheimer & CO Inc Shares Held: 28K ($1.42M)
Q1 2025
Chickasaw Capital Management LLC Shares Held: 5.49M ($279M)
Q1 2025
Fort Washington Investment Advisors Inc Shares Held: 20.9K ($1.07M)
Q1 2025
Miller Howard Investments Inc Shares Held: 2.32M ($118M)

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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P - Open market or private purchase×
S - Open market or private sale×
V - Transaction voluntarily reported earlier than required×
A - Grant, award, or other acquisition×
D - Sale (or disposition) back to the issuer×
F - Payment of exercise price or tax liability×
I - Discretionary transaction×
M - Exercise of conversion of derivative security×
C - Conversion of derivative security×
E - Expiration of short derivative position×
H - Expiration (or cancellation) of long derivative position with value received×
O - Exercise of out-of-the-money derivative securities×
X - Exercise of in-the-money or at-the-money derivatives securities×
G - Bona fide gift×
L - Small Acquisition×
W - Acquisition or disposition by will or laws×
Z - Deposit into or withdrawal from voting trust×
J - Other acquisition or disposition×
K - Transaction in equity swap or similar instrument×
U - Disposition due to a tender of shares in a change of control transaction×
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