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True North Advisors, LLC

Position in MPLX — Mplx LP

CIK 1634556 Dallas, TX

Position in MPLX

as of Jun 30, 2026 · filed Jul 22, 2026
Position Value
$478,467
+$29,092 QoQ
Shares Held
8,494
+0.9% QoQ
Ownership
0.001%
of shares outstanding
% of Portfolio
0.08%
of 13F equity value
Holder Rank
#349
of 629 holders
Holding Since
Mar 2023
10 quarters on record
Voting authority Sole 0% Shared 0% None 100%

Common Shares in MPLX Over Time

Shares Held

Position Value (USD)

Position in Oil & Gas Midstream

Energy · as of Jun 30, 2026

True North Advisors, LLC holds $9,622,984 across 7 Oil & Gas Midstream names. MPLX ranks #4 (5.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 MPLX
Mplx LP
This page
8,494 $478,467

All Filings in MPLX

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10 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $478,467 8,494
2025-12-31 $449,375 8,420
2025-09-30 $418,680 8,382
2025-06-30 $429,953 8,347
2025-03-31 $482,375 9,013
2024-09-30 $397,739 8,946
2024-03-31 $368,928 8,877
2023-09-30 $288,223 8,103
2023-06-30 $273,827 8,068
2023-03-31 $276,736 8,033