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Merrion Investment Management Co, LLC

Position in MPLX — Mplx LP

CIK 1383782 Cranford, NJ

Position in MPLX

as of Jun 30, 2026 · filed Jul 13, 2026
Position Value
$649,203
-$8,528 QoQ
Shares Held
11,525
0.0% QoQ
Ownership
0.001%
of shares outstanding
% of Portfolio
0.34%
of 13F equity value
Holder Rank
#302
of 629 holders
Holding Since
Mar 2023
14 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in MPLX Over Time

Shares Held

Position Value (USD)

Position in Oil & Gas Midstream

Energy · as of Jun 30, 2026

Merrion Investment Management Co, LLC holds $4,526,002 across 6 Oil & Gas Midstream names. MPLX ranks #4 (14.3% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 MPLX
Mplx LP
This page
11,525 $649,203

All Filings in MPLX

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14 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $649,203 11,525
2026-03-31 $657,731 11,525
2025-12-31 $615,089 11,525
2025-09-30 $575,673 11,525
2025-06-30 $593,652 11,525
2025-03-31 $616,818 11,525
2024-12-31 $585,088 12,225
2024-09-30 $546,858 12,300
2024-06-30 $523,857 12,300
2024-03-31 $511,188 12,300
2023-12-31 $469,098 12,775
2023-09-30 $454,406 12,775
2023-06-30 $464,978 13,700
2023-03-31 $471,965 13,700