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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
MHIP
576
Mountain Hill Investment Partners
New Jersey
$103 – – –
MIM
577
Merewether Investment Management
Texas
– -$71.1K -329,802 Closed
Citadel Advisors
578
Citadel Advisors
Florida
– -$11M -216,419 Closed
CIA
579
Corigliano Investment Advisers
North Carolina
– -$3.86M -75,000 Closed
CMF
580
Counterpoint Mutual Funds
California
– -$1.89M -36,767 Closed
AIC
581
Anthracite Investment Company
Texas
– -$1.55M -30,000 Closed
CIS
582
Custom Index Systems
New York
– -$985K -19,116 Closed
VF
583
Virtu Financial
New York
– -$962K -18,680 Closed
Geode Capital Management
584
Geode Capital Management
Massachusetts
– -$853K -16,557 Closed
MP
585
McDonald Partners
Ohio
– -$837K -16,248 Closed
MIM
586
Morningstar Investment Management
Illinois
– -$753K -14,610 Closed
Franklin Resources
587
Franklin Resources
California
– -$666K -12,920 Closed
BFG
588
Bleakley Financial Group
New Jersey
– -$550K -10,675 Closed
SFS
589
Sowell Financial Services
Arkansas
– -$454K -8,814 Closed
RCM
590
Requisite Capital Management
Texas
– -$448K -8,698 Closed
TI
591
Tidal Investments
Wisconsin
– -$381K -7,395 Closed
IA
592
Integrity Alliance
Iowa
– -$362K -7,031 Closed
FAIM
593
Financial Advocates Investment Management
Washington
– -$362K -7,027 Closed
FFG
594
Frisch Financial Group
New York
– -$314K -6,098 Closed
DWA
595
Douglass Winthrop Advisors
New York
– -$299K -5,800 Closed
MCM
596
Mainstay Capital Management
Michigan
– -$286K -5,548 Closed
VCA
597
Verdence Capital Advisors
Maryland
– -$268K -5,205 Closed
NRW
598
Nova R Wealth
Kansas
– -$242K -4,691 Closed
FTCM
599
First Trust Capital Management
Illinois
– -$220K -4,262 Closed
LMKC
600
L.M. Kohn & Company
Ohio
– -$218K -4,236 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.