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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
AC
26
AlphaCore Capital
California
$78.8M +$311K +6,140 +0.4%
Stifel Financial
27
Stifel Financial
Missouri
$70.8M +$2.73M +53,743 +4%
Barclays
28
Barclays
United Kingdom
$58.6M +$1.57M +31,049 +3%
ICA
29
Infrastructure Capital Advisors
New York
$57.8M -$3.39M -66,784 -6%
Mariner
30
Mariner
Kansas
$55.8M -$21.2K -417 -0%
Neuberger Berman Group
31
Neuberger Berman Group
New York
$54.7M +$2.39M +47,037 +4%
P3I
32
Progeny 3 Inc
Washington
$54.1M +$1.12M +22,100 +2%
BNP Paribas Financial Markets
33
BNP Paribas Financial Markets
France
$53M +$6.03M +118,882 +13%
EIP
34
Epoch Investment Partners
New York
$52.1M -$3.75M -74,014 -7%
N
35
Natixis
France
$48.6M +$28.9M +570,000 +141%
Raymond James Financial
36
Raymond James Financial
Florida
$47.3M +$1.98M +39,011 +4%
Deutsche Bank
37
Deutsche Bank
Germany
$46.5M -$2.68M -52,750 -5%
Allianz Asset Management
38
Allianz Asset Management
Germany
$45.5M -$5.27M -103,800 -10%
Jennison Associates
39
Jennison Associates
New York
$38.4M – – –
LIM
40
Longfellow Investment Management
Massachusetts
$38.3M – – –
Royal Bank of Canada
41
Royal Bank of Canada
Ontario, Canada
$37.2M -$3M -59,085 -7%
Wells Fargo
42
Wells Fargo
California
$36.8M -$607K -11,966 -2%
Cohen & Steers
43
Cohen & Steers
New York
$34.5M – – –
WHRC
44
W.H. Reaves & Co
New Jersey
$33.5M – – –
Citigroup
45
Citigroup
New York
$30.3M +$7.14M +140,697 +30%
NCM
46
Northside Capital Management
Oregon
$29.5M -$101K -1,989 -0.3%
BlackRock
47
BlackRock
New York
$29.2M -$101K -2,001 -0.3%
USCWA
48
U.S. Capital Wealth Advisors
Texas
$28.9M +$4.27M +84,151 +17%
HighTower Advisors
49
HighTower Advisors
Illinois
$27.9M -$4.07M -80,154 -13%
AP
50
Americana Partners
Texas
$27.4M +$1.45M +28,611 +6%
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.