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Montauk Renewables
MNTK

82 hedge funds and large institutions have $33.3M invested in Montauk Renewables in 2025 Q4 according to their latest regulatory filings, with 4 funds opening new positions, 25 increasing their positions, 33 reducing their positions, and 13 closing their positions.

New
Increased
Maintained
Reduced
Closed

0.61% less ownership

Funds ownership: 14.59% → 13.98% (-0.61%)

10% less funds holding

Funds holding: 91 → 82 (-9)

20% less capital invested

Capital invested by funds: $41.7M → $33.3M (-$8.45M)

24% less repeat investments, than reductions

Existing positions increased: 25 | Existing positions reduced: 33

69% less first-time investments, than exits

New positions opened: 4 | Existing positions closed: 13

Holders
82
Holders Change
-9
Holders Change %
-9.89%
% of All Funds
1%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
4
Increased
25
Reduced
33
Closed
13
Calls
$16K
Puts
–
Net Calls
+$16K
Net Calls Change
+$16K

Top Buyers

Rank Fund Capital Flow
1
Morgan Stanley
Morgan Stanley
New York
+$176K
2
BlackRock
BlackRock
New York
+$110K
3
Deutsche Bank
Deutsche Bank
Germany
+$89.9K
4
Geode Capital Management
Geode Capital Management
Massachusetts
+$71.7K
5
Jane Street
Jane Street
New York
+$62.2K

Top Sellers

Rank Fund Capital Flow
1
Vanguard Group
Vanguard Group
Pennsylvania
-$812K
2
Millennium Management
Millennium Management
New York
-$338K
3
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
-$276K
4
Barclays
Barclays
United Kingdom
-$266K
5
Northern Trust
Northern Trust
Illinois
-$118K
Name Holding Trade Value Shares
Change 		Change in
Stake
FFA
76
Farther Finance Advisors
California
$100 – – –
EP
77
Essential Partners
California
$37 +$2 +1 +5%
AF
78
Allworth Financial
California
$26 +$29 +15 New
SS
79
SBI Securities
Japan
$23 -$8 -4 -22%
TWD
80
True Wealth Design
Ohio
$21 -$154 -80 -87%
XT
81
XTX Topco
Cayman Islands
– -$50.6K -25,178 Closed
Squarepoint
82
Squarepoint
New York
– -$36.2K -17,997 Closed
QC
83
Quadrature Capital
United Kingdom
– -$31.7K -15,707 Closed
VF
84
Virtu Financial
New York
– -$28K -14,151 Closed
Nisa Investment Advisors
85
Nisa Investment Advisors
Missouri
– -$23.7K -11,800 Closed
Corient Private Wealth
86
Corient Private Wealth
Florida
– -$22.1K -11,000 Closed
Zurich Cantonal Bank
87
Zurich Cantonal Bank
Switzerland
– -$17K -8,835 Closed
MAM
88
Meeder Asset Management
Ohio
– -$8.44K -4,199 Closed
PWMG
89
Private Wealth Management Group
New Jersey
– -$3.27K -1,628 Closed
Simplex Trading
90
Simplex Trading
Illinois
– -$1.79K -930 Closed
PWA
91
Physician Wealth Advisors
Utah
– -$909 -452 Closed
AAP
92
Arax Advisory Partners
Colorado
– -$318 -158 Closed
VCM
93
Versant Capital Management
Arizona
– -$306 -152 Closed
C
94
Covestor
United Kingdom
– -$2 -1 -4%
1 2 3
4

MNTK Hedge Fund Activity: Q4 2025 in Review

82 of the 8,224 institutional investors tracked by Wall St. Rank reported a position in Montauk Renewables (MNTK) for Q4 2025, worth a combined $33.3M — down 20% from $41.7M a quarter earlier.

Sellers outnumbered buyers: 13 funds closed out of MNTK and 4 opened new positions — a net loss of 9 holders — while 33 trimmed existing stakes and 25 added.

The largest buyer was Morgan Stanley, adding an estimated $176K. The largest seller was Vanguard Group, cutting an estimated $812K.

  • 82 institutional investors held Montauk Renewables (MNTK) as of Q4 2025, down from 91 in Q3 2025.
  • Funds reported $33.3M of Montauk Renewables stock for Q4 2025, down 20% quarter-over-quarter.
  • 4 funds opened new Montauk Renewables positions in Q4 2025 and 13 closed out, a net change of -9 holders.
  • The largest Montauk Renewables buyer in Q4 2025 was Morgan Stanley, an estimated $176K added.
  • The largest Montauk Renewables seller in Q4 2025 was Vanguard Group, an estimated $812K sold.

Based on aggregated 13F filings for Q4 2025.