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Montauk Renewables
MNTK

91 hedge funds and large institutions have $41.7M invested in Montauk Renewables in 2025 Q3 according to their latest regulatory filings, with 13 funds opening new positions, 25 increasing their positions, 33 reducing their positions, and 8 closing their positions.

New
Increased
Maintained
Reduced
Closed

63% more first-time investments, than exits

New positions opened: 13 | Existing positions closed: 8

6% more funds holding

Funds holding: 86 → 91 (+5)

0.09% less ownership

Funds ownership: 14.68% → 14.59% (-0.09%)

10% less capital invested

Capital invested by funds: $46.4M → $41.7M (-$4.72M)

24% less repeat investments, than reductions

Existing positions increased: 25 | Existing positions reduced: 33

Holders
91
Holders Change
+5
Holders Change %
+5.81%
% of All Funds
1.19%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
13
Increased
25
Reduced
33
Closed
8
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Citadel Advisors
Citadel Advisors
Florida
+$281K
2
JP Morgan Chase
JP Morgan Chase
New York
+$242K
3
Barclays
Barclays
United Kingdom
+$195K
4
Goldman Sachs
Goldman Sachs
New York
+$157K
5
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$91.7K

Top Sellers

Rank Fund Capital Flow
1
BlackRock
BlackRock
New York
-$234K
2
Susquehanna International Group
Susquehanna International Group
Pennsylvania
-$194K
3
SAM
Storebrand Asset Management
Norway
-$185K
4
Marshall Wace
Marshall Wace
United Kingdom
-$126K
5
Deutsche Bank
Deutsche Bank
Germany
-$124K
Name Holding Trade Value Shares
Change 		Change in
Stake
QC
51
Quadrature Capital
United Kingdom
$31.7K +$33.6K +15,707 New
Neuberger Berman Group
52
Neuberger Berman Group
New York
$29.4K -$3.19K -1,490 -9%
VF
53
Virtu Financial
New York
$28K +$30.3K +14,151 New
VOYA Investment Management
54
VOYA Investment Management
Georgia
$27.5K -$17.3K -8,054 -37%
Citigroup
55
Citigroup
New York
$27.5K -$34.5K -16,095 -54%
EGM
56
Engineers Gate Manager
New York
$27.4K +$29.2K +13,626 New
BNP Paribas Financial Markets
57
BNP Paribas Financial Markets
France
$26.5K +$13.5K +6,323 +92%
Nisa Investment Advisors
58
Nisa Investment Advisors
Missouri
$23.7K +$223 +104 +0.9%
ProShare Advisors
59
ProShare Advisors
Maryland
$23.1K -$4.91K -2,292 -17%
Corient Private Wealth
60
Corient Private Wealth
Florida
$22.1K -$10.7K -5,000 -31%
Two Sigma Advisers
61
Two Sigma Advisers
New York
$20.7K +$22.1K +10,300 New
TRCT
62
Tower Research Capital (TRC)
New York
$20.2K -$15K -7,021 -41%
NEWAS
63
N.E.W. Advisory Services
Wisconsin
$20.1K – – –
Acadian Asset Management
64
Acadian Asset Management
Massachusetts
$20K +$22.2K +10,378 New
Zurich Cantonal Bank
65
Zurich Cantonal Bank
Switzerland
$17.8K -$122K -56,988 -87%
AIP
66
Ameritas Investment Partners
Nebraska
$13.3K – – –
Legal & General Group
67
Legal & General Group
United Kingdom
$12.2K – – –
California State Teachers Retirement System (CalSTRS)
68
California State Teachers Retirement System (CalSTRS)
California
$9.62K +$6 +3 +0.1%
MAM
69
Meeder Asset Management
Ohio
$8.44K – – –
SCM
70
Sterling Capital Management
North Carolina
$7.42K +$4.76K +2,224 +152%
New York State Common Retirement Fund
71
New York State Common Retirement Fund
New York
$6.76K – – –
GI
72
GAMMA Investing
California
$5.18K +$3.59K +1,677 +186%
AB
73
Amalgamated Bank
New York
$4K – – –
Fidelity Investments
74
Fidelity Investments
Massachusetts
$3.31K +$600 +280 +20%
PWMG
75
Private Wealth Management Group
New Jersey
$3.27K – – –
1 2
3
4

MNTK Hedge Fund Activity: Q3 2025 in Review

91 of the 7,621 institutional investors tracked by Wall St. Rank reported a position in Montauk Renewables (MNTK) for Q3 2025, worth a combined $41.7M — down 10% from $46.4M a quarter earlier.

Buyers outnumbered sellers: 13 funds opened new MNTK positions and 8 closed out — a net gain of 5 holders — while 25 added to existing stakes and 33 trimmed.

The largest buyer was Citadel Advisors, adding an estimated $281K. The largest seller was BlackRock, cutting an estimated $234K.

  • 91 institutional investors held Montauk Renewables (MNTK) as of Q3 2025, up from 86 in Q2 2025.
  • Funds reported $41.7M of Montauk Renewables stock for Q3 2025, down 10% quarter-over-quarter.
  • 13 funds opened new Montauk Renewables positions in Q3 2025 and 8 closed out, a net change of +5 holders.
  • The largest Montauk Renewables buyer in Q3 2025 was Citadel Advisors, an estimated $281K added.
  • The largest Montauk Renewables seller in Q3 2025 was BlackRock, an estimated $234K sold.

Based on aggregated 13F filings for Q3 2025.