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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 65 funds opening new positions, 213 increasing their positions, 131 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

63% more repeat investments, than reductions

Existing positions increased: 213 | Existing positions reduced: 131

35% more first-time investments, than exits

New positions opened: 65 | Existing positions closed: 48

1% more funds holding

Funds holding: 567 → 575 (+8)

2% more capital inflows, than outflows

Capital inflows: $527M | Capital outflows: $516M

0.05% less ownership

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

3% less funds holding in top 10

Funds holding in top 10: 31 → 30 (-1)

Holders
575
Holders Change
+8
Holders Change %
+1.41%
% of All Funds
7.55%
Holding in Top 10
30
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-3.23%
% of All Funds
0.39%
New
65
Increased
213
Reduced
131
Closed
48
Calls
$167M
Puts
$74.1M
Net Calls
+$92.6M
Net Calls Change
-$111M

MPLX Hedge Fund Activity: Q2 2025 in Review

575 of the 7,620 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: 65 funds opened new MPLX positions and 48 closed out — a net gain of 17 holders — while 213 added to existing stakes and 131 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.
  • 65 funds opened new MPLX positions in Q2 2025 and 48 closed out, a net change of +17 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.