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BROWN BROTHERS HARRIMAN & CO

Position in MPLX — Mplx LP

CIK 14661 NEW YORK, NY

Position in MPLX

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$1,841,540
+$856,512 QoQ
Shares Held
32,692
+89.4% QoQ
Ownership
0.003%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#184
of 629 holders
Holding Since
Mar 2020
26 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

BROWN BROTHERS HARRIMAN & CO holds $25,262,261 across 23 Oil & Gas Midstream names. MPLX ranks #6 (7.3% of the industry book) .

# Ticker Company Shares Value (USD) Open
6 MPLX
Mplx LP
This page
32,692 $1,841,540

All Filings in MPLX

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $1,841,540 32,692
2026-03-31 $985,028 17,260
2025-12-31 $921,166 17,260
2025-09-30 $862,137 17,260
2025-06-30 $1,008,874 19,586
2025-03-31 $1,218,222 22,762
2024-12-31 $962,943 20,120
2024-09-30 $767,379 17,260
2024-06-30 $319,637 7,505
2024-03-31 $294,660 7,090
2023-12-31 $260,344 7,090
2023-09-30 $252,191 7,090
2023-06-30 $240,634 7,090
2023-03-31 $244,250 7,090
2022-12-31 $232,835 7,090
2022-09-30 $212,770 7,090
2022-06-30 $206,673 7,090
2022-03-31 $235,246 7,090
2021-12-31 $209,793 7,090
2021-09-30 $201,852 7,090
2021-06-30 $209,934 7,090
2021-03-31 $181,716 7,090
2020-12-31 $153,498 7,090
2020-09-30 $111,596 7,090
2020-06-30 $122,515 7,090
2020-03-31 $84,918 7,308