Montauk RenewablesMNTK
13F holders, Q4 2025 (December 31)83holders −8
4new positions
12sold out
6famous investors
$1.67avg. 13F price*
At the end of Q4 2025, 83 institutions reported holding Montauk Renewables Inc. (MNTK) in their 13F filings, down 8 from Q3 2025. 4 opened new positions and 12 sold out. The largest holders were BlackRock, Inc. ($7.2M), Vanguard Group Inc. ($5.9M) and Geode Capital Management, LLC ($2.9M). 6 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Montauk Renewables Inc.
- CUSIP
- 61218C103
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 4 | $62K |
| Exits | 12 | $207K |
All 13F filers, Q3 2025 → Q4 2025: 473,293 shares bought and 1,332,720 shares sold, net −859,427 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 83 holders
| BlackRock, Inc. | 0.00% | Add +1.4% | 4,324,286 | $7.2M |
| Vanguard Group Inc. | 0.00% | Reduce -10.7% | 3,528,926 | $5.9M |
| Geode Capital Management, LLC | 0.00% | Add +2.2% | 1,724,933 | $2.9M |
| Baader Bank Aktiengesellschaft | 0.22% | No change | 1,605,000 | $2.7M |
| State Street Corp. | 0.00% | Reduce -0.5% | 1,385,960 | $2.3M |
| American Century Companies Inc. | 0.00% | No change | 955,111 | $1.6M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -14.7% | 832,534 | $1.4M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -0.1% | 544,649 | $910K |
| Northern Trust Corp. | 0.00% | Reduce -11.7% | 465,735 | $778K |
| Hosking Partners LLP | 0.02% | Add +0.1% | 396,250 | $662K |
| Renaissance Technologies | 0.00% | Add +1.9% | 342,700 | $572K |
| First Trust Advisors LP | 0.00% | Add +0.2% | 338,219 | $565K |
| Morgan Stanley | 0.00% | Add +38.6% | 328,662 | $549K |
| Gsa Capital Partners LLP | 0.03% | Add +14.2% | 242,646 | $405K |
| JTC Employer Solutions Trustee Ltd | 0.02% | No change | 197,859 | $363K |
| Bank of New York Mellon Corp | 0.00% | Reduce -21.2% | 209,568 | $350K |
| Citadel Advisors | 0.00% | Reduce -2.3% | 200,021 | $334K |
| Goldman Sachs Group Inc. | 0.00% | Add +18.3% | 196,032 | $327K |
| D. E. Shaw & Co. | 0.00% | Reduce -13.8% | 192,348 | $321K |
| JPMorgan Chase & Co. | 0.00% | Reduce -3.2% | 172,192 | $288K |
| Nuveen, LLC | 0.00% | No change | 138,750 | $232K |
| Jane Street Group, LLC | 0.00% | Add +32.9% | 130,687 | $229K |
| Barclays PLC | 0.00% | Reduce -55.8% | 109,376 | $183K |
| Storebrand Asset Management As | 0.00% | Reduce -24.6% | 99,407 | $166K |
| Alliancebernstein L.P. | 0.00% | No change | 97,520 | $163K |
| Rhumbline Advisers | 0.00% | Reduce -23.1% | 96,708 | $161K |
| Rathbones Group PLC | 0.00% | No change | 92,000 | $154K |
| Wells Fargo & Company | 0.00% | Add +51.9% | 75,049 | $125K |
| UBS Group AG | 0.00% | Reduce -4.8% | 69,056 | $115K |
| Bank of America Corp. | 0.00% | Add +92.4% | 59,149 | $99K |
| Deutsche Bank AG | 0.00% | Add +20885.3% | 47,007 | $79K |
| Andina Capital Management, LLC | 0.04% | Add +28.1% | 41,572 | $69K |
| STRS Ohio | 0.00% | No change | 40,000 | $67K |
| Two Sigma Securities, LLC | 0.01% | Reduce -22.1% | 37,293 | $62K |
| Los Angeles Capital Management LLC | 0.00% | No change | 29,205 | $59K |
| T. Rowe Price Associates Inc. | 0.00% | No change | 33,876 | $57K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -36.6% | 32,588 | $55K |
| Arrowstreet Capital, Limited Partnership | 0.00% | No change | 32,288 | $54K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +0.3% | 32,126 | $54K |
| Intech Investment Management LLC | 0.00% | Reduce -44.5% | 31,486 | $53K |
| Invesco Ltd. | 0.00% | Add +35.0% | 31,055 | $52K |
| R Squared Ltd | 0.02% | Add +18.2% | 28,945 | $48K |
| HRT Financial LP | 0.00% | New | 26,353 | $44K |
| Millennium Management | 0.00% | Reduce -87.3% | 25,650 | $43K |
| Two Sigma Investments, LP | 0.00% | Add +36.9% | 23,215 | $39K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -7.6% | 20,582 | $34K |
| Two Sigma Advisers, LP | 0.00% | Add +63.1% | 16,800 | $28K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 16,326 | $27K |
| Susquehanna International Group, LLP | 0.00% | Reduce -27.6% | 15,812 | $26K |
| AQR Capital Management | 0.00% | Reduce -11.7% | 14,557 | $24K |
| BNP Paribas Financial Markets | 0.00% | Add +9.3% | 14,407 | $24K |
| Voya Investment Management LLC | 0.00% | No change | 13,694 | $23K |
| Engineers Gate Manager LP | 0.00% | Reduce -0.4% | 13,574 | $23K |
| Neuberger Berman Group LLC | 0.00% | Reduce -14.3% | 12,525 | $21K |
| ProShare Advisors LLC | 0.00% | Add +6.8% | 12,291 | $21K |
| Acadian Asset Management LLC | 0.00% | Add +15.0% | 11,932 | $19K |
| Point72 Asset Management | 0.00% | New | 10,418 | $17K |
| N.E.W. Advisory Services LLC | 0.00% | No change | 10,000 | $17K |
| FMR LLC | 0.00% | Add +456.4% | 9,158 | $15K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | Reduce -5.8% | 8,324 | $14K |
| Citigroup Inc. | 0.00% | Reduce -47.0% | 7,263 | $12K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 6,625 | $11K |
| Legal & General Group Plc | 0.00% | No change | 6,061 | $10K |
| GAMMA Investing LLC | 0.00% | Add +132.8% | 6,002 | $10K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -41.4% | 5,875 | $10K |
| California State Teachers Retirement System | 0.00% | Reduce -13.5% | 4,138 | $7K |
| New York State Common Retirement Fund | 0.00% | No change | 3,365 | $6K |
| Sterling Capital Management LLC | 0.00% | Reduce -14.8% | 3,145 | $5K |
| Amalgamated Bank | 0.00% | Reduce -5.4% | 2,114 | $4K |
| Royal Bank of Canada | 0.00% | Reduce -95.0% | 2,002 | $3K |
| Towarzystwo Funduszy Inwestycyjnych Pzu SA | 0.00% | No change | 1,200 | $2K |
| Cwm, LLC | 0.00% | Reduce -21.6% | 1,127 | $2K |
| Optiver Holding B.V. | 0.00% | No change | 1,084 | $2K |
| PNC Financial Services Group, Inc. | 0.00% | Add +98.6% | 288 | $481 |
| EverSource Wealth Advisors, LLC | 0.00% | Reduce -20.6% | 123 | $205 |
| Rothschild Investment LLC | 0.00% | New | 86 | $144 |
| Farther Finance Advisors, LLC | 0.00% | No change | 60 | $100 |
| Essential Partners LLC | 0.00% | Add +4.8% | 22 | $37 |
| Allworth Financial LP | 0.00% | New | 15 | $26 |
| SBI Securities Co., Ltd. | 0.00% | Reduce -22.2% | 14 | $23 |
| True Wealth Design, LLC | 0.00% | Reduce -87.0% | 12 | $21 |
| Bessemer Group Inc. | 0.00% | No change | 90 | $0 |
| Covestor Ltd | 0.00% | Reduce -4.3% | 22 | $0 |
"% of holder's portfolio" is MNTK's weight in each manager's 13F, not the share of Montauk Renewables Inc. the manager owns.