Montauk Renewables
MNTK
86 hedge funds and large institutions have $46.4M invested in Montauk Renewables in 2025 Q2 according to their latest regulatory filings, with 13 funds opening new positions, 28 increasing their positions, 33 reducing their positions, and 20 closing their positions.
2% more capital invested
Capital invested by funds: $45.4M → $46.4M (+$1.07M)
0.55% less ownership
Funds ownership: 15.24% → 14.68% (-0.55%)
8% less funds holding
Funds holding: 93 → 86 (-7)
15% less repeat investments, than reductions
Existing positions increased: 28 | Existing positions reduced: 33
35% less first-time investments, than exits
New positions opened: 13 | Existing positions closed: 20
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
GCP
GSA Capital Partners
London,
United Kingdom
|
+$516K |
| 2 |
Millennium Management
New York
|
+$409K |
| 3 |
Vanguard Group
Malvern,
Pennsylvania
|
+$289K |
| 4 |
Citadel Advisors
Miami,
Florida
|
+$156K |
| 5 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
+$145K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
HP
Hosking Partners
London,
United Kingdom
|
-$774K |
| 2 |
UBS AM
Chicago,
Illinois
|
-$400K |
| 3 |
BlackRock
New York
|
-$373K |
| 4 |
Swiss National Bank
Zurich,
Switzerland
|
-$201K |
| 5 |
State Street
Boston,
Massachusetts
|
-$190K |
MNTK Hedge Fund Activity: Q2 2025 in Review
86 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in Montauk Renewables (MNTK) for Q2 2025, worth a combined $46.4M — up 2.4% from $45.4M a quarter earlier.
Sellers outnumbered buyers: 20 funds closed out of MNTK and 13 opened new positions — a net loss of 7 holders — while 33 trimmed existing stakes and 28 added.
The largest buyer was GSA Capital Partners, opening a new position worth an estimated $516K. The largest seller was Hosking Partners, cutting an estimated $774K.
- 86 institutional investors held Montauk Renewables (MNTK) as of Q2 2025, down from 93 in Q1 2025.
- Funds reported $46.4M of Montauk Renewables stock for Q2 2025, up 2.4% quarter-over-quarter.
- 13 funds opened new Montauk Renewables positions in Q2 2025 and 20 closed out, a net change of -7 holders.
- The largest Montauk Renewables buyer in Q2 2025 was GSA Capital Partners, an estimated $516K added.
- The largest Montauk Renewables seller in Q2 2025 was Hosking Partners, an estimated $774K sold.
Based on aggregated 13F filings for Q2 2025.