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MPLX
MPLX

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

80% more repeat investments, than reductions

Existing positions increased: 221 | Existing positions reduced: 123

48% more call options, than puts

Call options by funds: $143M | Put options by funds: $96.3M

20% more first-time investments, than exits

New positions opened: 54 | Existing positions closed: 45

0% more funds holding

Funds holding: 575 → 576 (+1)

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: 30 → 28 (-2)

Holders
576
Holders Change
+1
Holders Change %
+0.17%
% of All Funds
7.56%
Holding in Top 10
28
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-6.67%
% of All Funds
0.37%
New
54
Increased
221
Reduced
123
Closed
45
Calls
$143M
Puts
$96.3M
Net Calls
+$46.4M
Net Calls Change
-$46.2M

Top Buyers

1
N
Natixis
France
+$28.9M
2
TCA
Tortoise Capital Advisors
Kansas
+$16.7M
3
AA
ALPS Advisors
Colorado
+$16.5M
4
Susquehanna International Group
Susquehanna International Group
Pennsylvania
+$15.4M
5
Mirae Asset Global ETFs Holdings
Mirae Asset Global ETFs Holdings
Hong Kong
+$15.2M

Top Sellers

1
Blackstone Inc
Blackstone Inc
New York
-$148M
2
UBS Group
UBS Group
Switzerland
-$78.3M
3
Victory Capital Management
Victory Capital Management
Texas
-$60.9M
4
Goldman Sachs
Goldman Sachs
New York
-$53.2M
5
BC
Brookfield Corp
Ontario, Canada
-$47.3M
Name Holding Trade Value Shares
Change 		Change in
Stake
AA
1
ALPS Advisors
Colorado
$1.32B +$16.5M +325,451 +1%
Invesco
2
Invesco
Georgia
$977M +$7.27M +143,361 +0.7%
Blackstone Inc
3
Blackstone Inc
New York
$700M -$148M -2,925,721 -17%
TCA
4
Tortoise Capital Advisors
Kansas
$675M +$16.7M +329,642 +2%
Goldman Sachs
5
Goldman Sachs
New York
$654M -$53.2M -1,049,561 -7%
Bank of America
6
Bank of America
North Carolina
$467M -$26.8M -527,677 -5%
KACA
7
Kayne Anderson Capital Advisors
California
$361M -$19.5M -385,337 -5%
Mirae Asset Global ETFs Holdings
8
Mirae Asset Global ETFs Holdings
Hong Kong
$353M +$15.2M +300,321 +4%
EIP
9
Energy Income Partners
Connecticut
$283M +$5.99M +118,090 +2%
CCM
10
Chickasaw Capital Management
Tennessee
$280M +$6.1M +120,216 +2%
UBS Group
11
UBS Group
Switzerland
$263M -$78.3M -1,542,786 -23%
Morgan Stanley
12
Morgan Stanley
New York
$233M -$29.7M -586,044 -11%
JP Morgan Chase
13
JP Morgan Chase
New York
$233M -$10.6M -209,052 -4%
BWA
14
Brave Warrior Advisors
New York
$223M +$9.76M +192,441 +5%
IG
15
ING Group
Netherlands
$215M -$13.1M -258,200 -6%
BC
16
Brookfield Corp
Ontario, Canada
$141M -$47.3M -931,611 -25%
CIBC Private Wealth Group
17
CIBC Private Wealth Group
Georgia
$134M -$1.82M -35,979 -1%
MHI
18
Miller Howard Investments
New York
$113M +$940K +18,538 +0.8%
WHG
19
Westwood Holdings Group
Texas
$112M +$1.67M +32,918 +1%
ClearBridge Investments
20
ClearBridge Investments
New York
$108M +$1.1M +21,596 +1%
FI
21
Fractal Investments
Connecticut
$102M -$10.4M -205,202 -9%
EGA
22
Eagle Global Advisors
Texas
$96.8M +$887K +17,490 +0.9%
DPIM
23
Duff & Phelps Investment Management
Illinois
$91.8M +$238K +4,687 +0.3%
NIM
24
NXG Investment Management
Texas
$86.6M +$913K +18,000 +1%
Fidelity Investments
25
Fidelity Investments
Massachusetts
$83.2M +$12.3M +242,037 +17%
1
2 3 4 5

MPLX Hedge Fund Activity: Q3 2025 in Review

576 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in MPLX (MPLX) for Q3 2025, worth a combined $10.5B — down 6% from $11.2B a quarter earlier.

Buyers outnumbered sellers: 54 funds opened new MPLX positions and 45 closed out — a net gain of 9 holders — while 221 added to existing stakes and 123 trimmed.

The largest buyer was Natixis, adding an estimated $28.9M. The largest seller was Blackstone Inc, cutting an estimated $148M.

  • 576 institutional investors held MPLX (MPLX) as of Q3 2025, up from 575 in Q2 2025.
  • Funds reported $10.5B of MPLX stock for Q3 2025, down 6% quarter-over-quarter.
  • 54 funds opened new MPLX positions in Q3 2025 and 45 closed out, a net change of +9 holders.
  • The largest MPLX buyer in Q3 2025 was Natixis, an estimated $28.9M added.
  • The largest MPLX seller in Q3 2025 was Blackstone Inc, an estimated $148M sold.

Based on aggregated 13F filings for Q3 2025.