576 hedge funds and large institutions have $10.5B invested in MPLX in 2025 Q3 according to their latest regulatory filings, with 54 funds opening new positions, 221 increasing their positions, 123 reducing their positions, and 45 closing their positions.

New
Increased
Maintained
Reduced
Closed

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more call options, than puts

Call options by funds: $ | Put options by funds: $

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding

Funds holding:

0.65% less ownership

Funds ownership: 21.27%20.62% (-0.65%)

6% less capital invested

Capital invested by funds: $11.2B → $10.5B (-$672M)

7% less funds holding in top 10

Funds holding in top 10: 3028 (-2)

Holders
576
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
76
$10.9M
77
$10.5M
78
$10.2M
79
$10.1M
80
$10.1M
81
$9.82M
82
$9.67M
83
$9.59M
84
$9.48M
85
$9.34M
86
$9.34M
87
$8.97M
88
$8.33M
89
$7.88M
90
$7.78M
91
$7.64M
92
$7.46M
93
$7.17M
94
$7.01M
95
$6.99M
96
$6.73M
97
$6.68M
98
$6.6M
99
$6.51M
100
$6.49M