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GROUP ONE TRADING LLC

Position in MPLX — Mplx LP

CIK 932540 CHICAGO, IL

Position in MPLX

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$4,106,288
+$4,067,227 QoQ
Shares Held
72,897
+5340.1% QoQ
Ownership
0.007%
of shares outstanding
% of Portfolio
0.14%
of 13F equity value
Holder Rank
#126
of 619 holders
Holding Since
Dec 2021
4 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

GROUP ONE TRADING LLC holds $58,241,938 across 21 Oil & Gas Midstream names. MPLX ranks #5 (7.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
5 MPLX
Mplx LP
This page
72,897 $4,106,288

All Filings in MPLX

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4 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $4,106,288 72,897
2022-06-30 $39,061 1,340
2022-03-31 $503,639 15,179
2021-12-31 $638,788 21,588