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575 hedge funds and large institutions have $11.2B invested in MPLX in 2025 Q2 according to their latest regulatory filings, with 64 funds opening new positions, 214 increasing their positions, 132 reducing their positions, and 48 closing their positions.

New
Increased
Maintained
Reduced
Closed

125% more call options, than puts

Call options by funds: $167M | Put options by funds: $74.1M

62% more repeat investments, than reductions

Existing positions increased: 214 | Existing positions reduced: 132

33% more first-time investments, than exits

New positions opened: 64 | Existing positions closed: 48

1% more funds holding

Funds holding: 567575 (+8)

0.05% less ownership

Funds ownership: 21.32%21.27% (-0.05%)

4% less capital invested

Capital invested by funds: $11.6B → $11.2B (-$476M)

3% less funds holding in top 10

Funds holding in top 10: 3130 (-1)

Holders
575
Holders Change
+8
Holders Change %
+1.41%
% of All Funds
7.57%
Holding in Top 10
30
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-3.23%
% of All Funds
0.39%
New
64
Increased
214
Reduced
132
Closed
48
Calls
$167M
Puts
$74.1M
Net Calls
+$92.6M
Net Calls Change
-$111M
Name Holding Trade Value Shares
Change
Change in
Stake
Victory Capital Management
26
Victory Capital Management
Texas
$74.5M +$73.5M +1,445,745 New
Fidelity Investments
27
Fidelity Investments
Massachusetts
$73.3M -$26.4M -519,583 -27%
Stifel Financial
28
Stifel Financial
Missouri
$70.3M -$3.42M -67,345 -5%
ICA
29
Infrastructure Capital Advisors
New York
$62.1M +$52.9M +1,041,289 +636%
Barclays
30
Barclays
United Kingdom
$58.8M -$2.84M -55,827 -5%
EIP
31
Epoch Investment Partners
New York
$57.6M -$4.39M -86,383 -7%
Mariner
32
Mariner
Kansas
$57.6M +$2.57M +50,568 +5%
P3I
33
Progeny 3 Inc
Washington
$54.6M +$249K +4,900 +0.5%
Neuberger Berman Group
34
Neuberger Berman Group
New York
$54M +$2.61M +51,367 +5%
Allianz Asset Management
35
Allianz Asset Management
Germany
$52.3M -$13.2M -259,900 -20%
Deutsche Bank
36
Deutsche Bank
Germany
$50.6M +$5.22M +102,750 +12%
BNP Paribas Financial Markets
37
BNP Paribas Financial Markets
France
$48.6M -$12.9M -252,995 -21%
Raymond James Financial
38
Raymond James Financial
Florida
$46.8M +$1.54M +30,331 +3%
Royal Bank of Canada
39
Royal Bank of Canada
Ontario, Canada
$41.4M +$1.16M +22,756 +3%
Jennison Associates
40
Jennison Associates
New York
$39.6M -$156K -3,063 -0.4%
LIM
41
Longfellow Investment Management
Massachusetts
$39.5M
Wells Fargo
42
Wells Fargo
California
$38.6M -$9.15M -180,102 -19%
Cohen & Steers
43
Cohen & Steers
New York
$35.6M +$1.74M +34,320 +5%
WHRC
44
W.H. Reaves & Co
New Jersey
$34.5M +$28.5M +560,500 +510%
HighTower Advisors
45
HighTower Advisors
Illinois
$32.9M +$1.17M +23,043 +4%
NCM
46
Northside Capital Management
Oregon
$30.5M +$30.1M +592,056 New
BlackRock
47
BlackRock
New York
$30.2M +$24.1M +474,842 +429%
AL
48
Appaloosa LP
New Jersey
$29.8M
AP
49
Americana Partners
Texas
$26.8M -$61.2K -1,204 -0.2%
RA
50
RR Advisors
Texas
$25.7M -$661K -13,000 -3%

MPLX Hedge Fund Activity: Q2 2025 in Review

575 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in MPLX (MPLX) for Q2 2025, worth a combined $11.2B — down 4.1% from $11.6B a quarter earlier.

Buyers outnumbered sellers: 64 funds opened new MPLX positions and 48 closed out — a net gain of 16 holders — while 214 added to existing stakes and 132 trimmed.

The largest buyer was Victory Capital Management, opening a new position worth an estimated $73.5M. The largest seller was Amundi, exiting entirely with an estimated $73.6M sold.

  • 575 institutional investors held MPLX (MPLX) as of Q2 2025, up from 567 in Q1 2025.
  • Funds reported $11.2B of MPLX stock for Q2 2025, down 4.1% quarter-over-quarter.
  • 64 funds opened new MPLX positions in Q2 2025 and 48 closed out, a net change of +16 holders.
  • The largest MPLX buyer in Q2 2025 was Victory Capital Management, an estimated $73.5M added.
  • The largest MPLX seller in Q2 2025 was Amundi, an estimated $73.6M sold.

Based on aggregated 13F filings for Q2 2025.