565 hedge funds and large institutions have $10.5B invested in MPLX in 2025 Q3 according to their latest regulatory filings, with 51 funds opening new positions, 219 increasing their positions, 121 reducing their positions, and 43 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
565
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
28
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$143M
Puts
$96.3M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
AL
51
Appaloosa LP
New Jersey
$26.7M
RA
52
RR Advisors
Texas
$24.9M
CPIG
53
Chicago Partners Investment Group
Illinois
$24.7M
LPL Financial
54
LPL Financial
California
$21.5M
BG
55
Bollard Group
Massachusetts
$20.3M
OA
56
Oxbow Advisors
Texas
$19.7M
ETC
57
Exchange Traded Concepts
Oklahoma
$18.9M
SIA
58
Sovereign Investment Advisors
Arizona
$18.7M
CCA
59
Catalyst Capital Advisors
New York
$18.2M
HM
60
Heronetta Management
New York
$17.8M
DCP
61
Distillate Capital Partners
Illinois
$17.7M
MSRPS
62
Maryland State Retirement & Pension System
Maryland
$17.5M
Susquehanna International Group
63
Susquehanna International Group
Pennsylvania
$17M
TYCC
64
Texas Yale Capital Corp
Florida
$15M
GAM
65
Goldentree Asset Management
New York
$14.6M
Corient Private Wealth
66
Corient Private Wealth
Florida
$13.8M
WPEP
67
Walnut Private Equity Partners
Nebraska
$12.9M
PCA
68
Private Capital Advisors
Connecticut
$12.8M
WA
69
Waverly Advisors
Alabama
$12.3M
Victory Capital Management
70
Victory Capital Management
Texas
$12.2M
Envestnet Asset Management
71
Envestnet Asset Management
Illinois
$12.1M
TA
72
Tectonic Advisors
Texas
$12.1M
SPS
73
Susquehanna Portfolio Strategies
Pennsylvania
$11.4M
Cetera Investment Advisers
74
Cetera Investment Advisers
Illinois
$11.2M
N
75
Nuveen
North Carolina
$11.2M