MPLX LP (MPLX) Institutional Ownership

MPLX is currently held by 4 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $226.24M based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026.

The largest disclosed holder is Brave Warrior Advisors, which reported ownership valued at approximately $185.68M in its March 31, 2026 13F filing. Based on current market prices and the latest disclosed share count, Brave Warrior Advisors's MPLX position is now estimated to be worth approximately $187.66M, representing an estimated gain of +1.07% since the filing period.

Major shareholders tracked on this page include Brave Warrior Advisors, Appaloosa Management, Sequoia Financial Advisors, and other prominent asset managers. Collectively, these investors account for approximately 100% of the total disclosed value among the investors covered in this analysis.

This page tracks institutional position trends, hedge fund exposure, portfolio concentration, historical 13F filings, and estimated holding performance to help investors analyze smart money sentiment toward MPLX LP (MPLX).

Institutional Ownership Trend

Portfolio quarterInstitutional holdersTotal reported valueTotal shares
Q1 20264$226,238,4973,964,228
Q4 20254$283,109,1835,304,650
Q3 20254$260,094,6975,207,101
Q2 20254$260,372,7935,054,801
Q1 20254$275,152,2105,141,110
Q4 20244$249,994,5985,223,456
Q3 20244$231,809,5115,213,889
Q2 20243$206,773,5134,854,978
Q1 20243$153,506,3903,693,609
Q4 20233$25,153,200685,000
Q3 20233$7,196,700202,325
Q2 20233$6,866,911202,325

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