1 institutions reported holding $410 of MONTAUK RENEWABLES INC COM (MNTK) in SEC 13F filings for 2026-06-30. Largest institutional holders: GAMMA Investing LLC ($410). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GAMMA Investing LLC | $410 | 263 | Trimmed |
Source: SEC Form 13F filings · as of 2026-06-30