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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
ATI
601
ARK & TLK Investments
Oklahoma
– -$213K -4,129 Closed
KWM
602
Kingsview Wealth Management
Oregon
– -$211K -4,089 Closed
SB
603
Strategic Blueprint
Georgia
– -$209K -4,062 Closed
VDBMI
604
Van Den Berg Management I
Texas
– -$206K -3,990 Closed
ATC
605
Advantage Trust Company
Kansas
– -$72.1K -1,400 Closed
SWP
606
Strategic Wealth Partners
Ohio
– -$68.1K -1,322 Closed
GAM
607
Generali Asset Management
Italy
– -$65.6K -1,274 Closed
SOW
608
State of Wyoming
Wyoming
– -$57.3K -1,113 Closed
TCM
609
Traub Capital Management
Massachusetts
– -$56.7K -1,100 Closed
CPBTD
610
Central Pacific Bank - Trust Division
Hawaii
– -$51.5K -1,000 Closed
MWM
611
MorganRosel Wealth Management
Colorado
– -$46.4K -900 Closed
EWA
612
EQ Wealth Advisors
Texas
– -$30.6K -594 Closed
DJSG
613
D.J. St. Germain
Massachusetts
– -$22K -427 Closed
TSMHT
614
Thurston Springer Miller Herd & Titak
Indiana
– -$20.6K -400 Closed
BIG
615
Brooklyn Investment Group
New York
– -$13.7K -265 Closed
CIA
616
Cape Investment Advisory
Georgia
– -$10.3K -200 Closed
TCM
617
Tradewinds Capital Management
Washington
– -$10.3K -200 Closed
SC
618
Swan Capital
Florida
– -$6.28K -122 Closed
PSFG
619
Park Square Financial Group
Georgia
– -$5.92K -115 Closed
OW
620
Olistico Wealth
Oklahoma
– -$4.95K -96 Closed
T
621
Transce3nd
Texas
– -$45 -1 Closed
21 22 23 24
25

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.