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LONGFELLOW INVESTMENT MANAGEMENT CO LLC

Position in MPLX — Mplx LP

CIK 1167487 BOSTON, MA

Position in MPLX

as of Mar 31, 2026 · filed May 12, 2026
Position Value
$33,069,382
-$7,840,270 QoQ
Shares Held
579,453
-24.4% QoQ
Ownership
0.057%
of shares outstanding
% of Portfolio
7.05%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Dec 2020
22 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in MPLX Over Time

Shares Held

Position Value (USD)

Position in Oil & Gas Midstream

Energy · as of Mar 31, 2026

LONGFELLOW INVESTMENT MANAGEMENT CO LLC holds $211,564,660 across 10 Oil & Gas Midstream names. MPLX ranks #4 (15.6% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 MPLX
Mplx LP
This page
579,453 $33,069,382

All Filings in MPLX

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22 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $33,069,382 579,453
2025-12-31 $40,909,652 766,529
2025-09-30 $38,288,123 766,529
2025-06-30 $39,483,908 766,529
2025-03-31 $41,024,632 766,529
2024-12-31 $36,686,077 766,529
2024-09-30 $34,079,879 766,529
2024-06-30 $36,919,737 866,864
2024-03-31 $45,430,815 1,093,138
2023-12-31 $40,140,027 1,093,138
2023-09-30 $38,882,918 1,093,138
2023-06-30 $44,691,343 1,316,775
2023-03-31 $45,362,898 1,316,775
2022-12-31 $43,242,891 1,316,775
2022-09-30 $39,516,417 1,316,775
2022-06-30 $38,383,991 1,316,775
2022-03-31 $43,690,594 1,316,775
2021-12-31 $45,159,222 1,526,165
2021-09-30 $41,351,166 1,452,447
2021-06-30 $43,006,955 1,452,447
2021-03-31 $34,740,106 1,355,447
2020-12-31 $24,159,083 1,115,893