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Montauk Renewables
MNTK

94 hedge funds and large institutions have $24M invested in Montauk Renewables in 2026 Q1 according to their latest regulatory filings, with 22 funds opening new positions, 29 increasing their positions, 29 reducing their positions, and 9 closing their positions.

New
Increased
Maintained
Reduced
Closed

144% more first-time investments, than exits

New positions opened: 22 | Existing positions closed: 9

15% more funds holding

Funds holding: 82 → 94 (+12)

0.64% more ownership

Funds ownership: 13.98% → 14.62% (+0.64%)

0% more repeat investments, than reductions

Existing positions increased: 29 | Existing positions reduced: 29

28% less capital invested

Capital invested by funds: $33.3M → $24M (-$9.29M)

Holders
94
Holders Change
+12
Holders Change %
+14.63%
% of All Funds
1.16%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
22
Increased
29
Reduced
29
Closed
9
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Barclays
Barclays
United Kingdom
+$1.4M
2
Marshall Wace
Marshall Wace
United Kingdom
+$308K
3
Millennium Management
Millennium Management
New York
+$273K
4
Goldman Sachs
Goldman Sachs
New York
+$204K
5
JDLA
J. Derek Lewis & Associates
California
+$128K

Top Sellers

Rank Fund Capital Flow
1
Citadel Advisors
Citadel Advisors
Florida
-$334K
2
BlackRock
BlackRock
New York
-$159K
3
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
-$145K
4
Jane Street
Jane Street
New York
-$143K
5
D.E. Shaw & Co
D.E. Shaw & Co
New York
-$112K
Name Holding Trade Value Shares
Change 		Change in
Stake
BlackRock
1
BlackRock
New York
$4.85M -$159K -105,289 -2%
VCM
2
Vanguard Capital Management
Pennsylvania
$3.09M +$4.05M +2,688,714 New
Geode Capital Management
3
Geode Capital Management
Massachusetts
$2.02M +$51.8K +34,345 +2%
BBA
4
Baader Bank Aktiengesellschaft
Germany
$1.85M – – –
State Street
5
State Street
Massachusetts
$1.57M -$30.9K -20,487 -1%
Barclays
6
Barclays
United Kingdom
$1.19M +$1.4M +929,541 +850%
American Century Companies
7
American Century Companies
Missouri
$1.1M -$969 -643 -0.1%
Dimensional Fund Advisors
8
Dimensional Fund Advisors
Texas
$847K -$145K -95,950 -12%
Charles Schwab
9
Charles Schwab
California
$599K -$36.2K -24,038 -4%
Northern Trust
10
Northern Trust
Illinois
$581K +$59.8K +39,639 +9%
VFT
11
Vanguard Fiduciary Trust
Pennsylvania
$497K +$652K +432,268 New
HP
12
Hosking Partners
United Kingdom
$456K +$1.03K +682 +0.2%
VPM
13
Vanguard Portfolio Management
Pennsylvania
$447K +$586K +388,919 New
Renaissance Technologies
14
Renaissance Technologies
New York
$408K +$17.9K +11,900 +3%
Goldman Sachs
15
Goldman Sachs
New York
$381K +$204K +135,157 +69%
First Trust Advisors
16
First Trust Advisors
Illinois
$359K -$39.6K -26,269 -8%
GCP
17
GSA Capital Partners
United Kingdom
$333K +$71.2K +47,248 +19%
Morgan Stanley
18
Morgan Stanley
New York
$301K -$101K -67,264 -20%
Millennium Management
19
Millennium Management
New York
$238K +$273K +181,204 +706%
Marshall Wace
20
Marshall Wace
United Kingdom
$235K +$308K +204,636 New
Bank of New York Mellon
21
Bank of New York Mellon
New York
$225K -$20.6K -13,661 -7%
JEST
22
JTC Employer Solutions Trustee
Jersey
$217K – – –
JP Morgan Chase
23
JP Morgan Chase
New York
$193K -$15K -9,940 -6%
AllianceBernstein
24
AllianceBernstein
Tennessee
$163K – – –
N
25
Nuveen
North Carolina
$161K +$1.29K +858 +0.6%
1
2 3 4 5

MNTK Hedge Fund Activity: Q1 2026 in Review

94 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in Montauk Renewables (MNTK) for Q1 2026, worth a combined $24M — down 28% from $33.3M a quarter earlier.

Buyers outnumbered sellers: 22 funds opened new MNTK positions and 9 closed out — a net gain of 13 holders — while 29 added to existing stakes and 29 trimmed.

The largest buyer was Barclays, adding an estimated $1.4M. The largest seller was Citadel Advisors, exiting entirely with an estimated $334K sold.

  • 94 institutional investors held Montauk Renewables (MNTK) as of Q1 2026, up from 82 in Q4 2025.
  • Funds reported $24M of Montauk Renewables stock for Q1 2026, down 28% quarter-over-quarter.
  • 22 funds opened new Montauk Renewables positions in Q1 2026 and 9 closed out, a net change of +13 holders.
  • The largest Montauk Renewables buyer in Q1 2026 was Barclays, an estimated $1.4M added.
  • The largest Montauk Renewables seller in Q1 2026 was Citadel Advisors, an estimated $334K sold.

Based on aggregated 13F filings for Q1 2026.