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
151
$2.7M
152
$2.69M
153
$2.58M
154
$2.5M
155
$2.43M
156
$2.37M
157
$2.34M
158
$2.33M
159
$2.23M
160
$2.21M
161
$2.17M
162
$2.14M
163
$2.14M
164
$2.13M
165
$2.12M
166
$2.12M
167
$2.08M
168
$2.08M
169
$2M
170
$1.99M
171
$1.96M
172
$1.95M
173
$1.95M
174
$1.94M
175
$1.89M