Montauk RenewablesMNTK
13F holders, Q3 2025 (September 30)91holders +5
13new positions
8sold out
5famous investors
$2.01avg. 13F price*
At the end of Q3 2025, 91 institutions reported holding Montauk Renewables Inc. (MNTK) in their 13F filings, up 5 from Q2 2025. 13 opened new positions and 8 sold out. The largest holders were BlackRock, Inc. ($8.6M), Vanguard Group Inc. ($7.9M) and Geode Capital Management, LLC ($3.4M). 5 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 Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 13 | $265K |
| Exits | 8 | $484K |
All 13F filers, Q2 2025 → Q3 2025: 746,222 shares bought and 905,401 shares sold, net −159,179 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 91 holders
| BlackRock, Inc. | 0.00% | Reduce -2.5% | 4,266,765 | $8.6M |
| Vanguard Group Inc. | 0.00% | Reduce -0.6% | 3,951,495 | $7.9M |
| Geode Capital Management, LLC | 0.00% | Add +0.6% | 1,687,618 | $3.4M |
| Baader Bank Aktiengesellschaft | 0.27% | No change | 1,605,000 | $3.2M |
| State Street Corp. | 0.00% | Add +2.3% | 1,393,303 | $2.8M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -0.6% | 976,038 | $2.0M |
| American Century Companies Inc. | 0.00% | No change | 955,111 | $1.9M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +4.0% | 545,009 | $1.1M |
| Northern Trust Corp. | 0.00% | Add +2.0% | 527,234 | $1.1M |
| Hosking Partners LLP | 0.03% | Add +0.1% | 395,948 | $796K |
| First Trust Advisors LP | 0.00% | Reduce -5.1% | 337,560 | $678K |
| Renaissance Technologies | 0.00% | Reduce -2.3% | 336,400 | $676K |
| Bank of New York Mellon Corp | 0.00% | Reduce -2.5% | 265,973 | $535K |
| Barclays PLC | 0.00% | Add +58.0% | 247,656 | $498K |
| Morgan Stanley | 0.00% | Reduce -6.6% | 237,081 | $477K |
| D. E. Shaw & Co. | 0.00% | Add +23.7% | 223,277 | $449K |
| Gsa Capital Partners LLP | 0.04% | Reduce -12.8% | 212,504 | $427K |
| Citadel Advisors | 0.00% | Add +178.3% | 204,707 | $411K |
| Millennium Management | 0.00% | Reduce -6.6% | 201,735 | $405K |
| JTC Employer Solutions Trustee Ltd | 0.03% | No change | 197,859 | $400K |
| JPMorgan Chase & Co. | 0.00% | Add +174.6% | 177,855 | $357K |
| Goldman Sachs Group Inc. | 0.00% | Add +79.0% | 165,759 | $333K |
| Nuveen, LLC | 0.00% | No change | 138,750 | $279K |
| Storebrand Asset Management As | 0.00% | Reduce -39.5% | 131,861 | $265K |
| Rhumbline Advisers | 0.00% | Add +18.7% | 125,712 | $253K |
| Jane Street Group, LLC | 0.00% | Reduce -8.4% | 98,323 | $197K |
| Alliancebernstein L.P. | 0.00% | Add +6.9% | 97,520 | $196K |
| Rathbones Group PLC | 0.00% | No change | 92,000 | $185K |
| UBS Group AG | 0.00% | Reduce -13.1% | 72,527 | $146K |
| Intech Investment Management LLC | 0.00% | Add +67.6% | 56,734 | $114K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -1.0% | 51,423 | $103K |
| Wells Fargo & Company | 0.00% | Add +19.4% | 49,404 | $99K |
| Two Sigma Securities, LLC | 0.01% | Add +51.7% | 47,887 | $96K |
| Royal Bank of Canada | 0.00% | Reduce -42.3% | 39,803 | $81K |
| STRS Ohio | 0.00% | No change | 40,000 | $80K |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -52.9% | 33,876 | $69K |
| Andina Capital Management, LLC | 0.04% | Add +13.4% | 32,465 | $65K |
| Arrowstreet Capital, Limited Partnership | 0.00% | No change | 32,288 | $65K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -15.1% | 32,028 | $64K |
| Bank of America Corp. | 0.00% | Reduce -10.9% | 30,737 | $62K |
| Los Angeles Capital Management LLC | 0.00% | No change | 29,205 | $59K |
| XTX Topco Ltd | 0.00% | New | 25,178 | $51K |
| R Squared Ltd | 0.02% | New | 24,491 | $49K |
| Invesco Ltd. | 0.00% | Add +10.7% | 23,001 | $46K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -3.1% | 22,282 | $45K |
| Susquehanna International Group, LLP | 0.00% | Reduce -80.6% | 21,845 | $44K |
| Squarepoint Ops LLC | 0.00% | Reduce -32.9% | 17,997 | $36K |
| Two Sigma Investments, LP | 0.00% | New | 16,955 | $34K |
| AQR Capital Management | 0.00% | Reduce -43.0% | 16,478 | $33K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 16,326 | $33K |
| Quadrature Capital Ltd | 0.00% | New | 15,707 | $32K |
| Neuberger Berman Group LLC | 0.00% | Reduce -9.3% | 14,622 | $29K |
| Virtu Financial LLC | 0.00% | New | 14,151 | $28K |
| Voya Investment Management LLC | 0.00% | Reduce -37.0% | 13,694 | $28K |
| Citigroup Inc. | 0.00% | Reduce -54.0% | 13,690 | $28K |
| Engineers Gate Manager LP | 0.00% | New | 13,626 | $27K |
| BNP Paribas Financial Markets | 0.00% | Add +92.3% | 13,175 | $26K |
| Nisa Investment Advisors, LLC | 0.00% | Add +0.9% | 11,800 | $24K |
| ProShare Advisors LLC | 0.00% | Reduce -16.6% | 11,506 | $23K |
| Corient Private Wealth LP | 0.00% | Reduce -31.3% | 11,000 | $22K |
| Two Sigma Advisers, LP | 0.00% | New | 10,300 | $21K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -41.2% | 10,032 | $20K |
| N.E.W. Advisory Services LLC | 0.00% | No change | 10,000 | $20K |
| Acadian Asset Management LLC | 0.00% | New | 10,378 | $20K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | Reduce -86.6% | 8,835 | $18K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 6,625 | $13K |
| Legal & General Group Plc | 0.00% | No change | 6,061 | $12K |
| California State Teachers Retirement System | 0.00% | Add +0.1% | 4,785 | $10K |
| Meeder Asset Management Inc. | 0.00% | No change | 4,199 | $8K |
| Sterling Capital Management LLC | 0.00% | Add +151.8% | 3,689 | $7K |
| New York State Common Retirement Fund | 0.00% | No change | 3,365 | $7K |
| GAMMA Investing LLC | 0.00% | Add +186.1% | 2,578 | $5K |
| Amalgamated Bank | 0.00% | No change | 2,235 | $4K |
| FMR LLC | 0.00% | Add +20.5% | 1,646 | $3K |
| Private Wealth Management Group, LLC | 0.00% | No change | 1,628 | $3K |
| Cwm, LLC | 0.00% | Reduce -56.5% | 1,438 | $3K |
| Towarzystwo Funduszy Inwestycyjnych Pzu SA | 0.00% | No change | 1,200 | $2K |
| Optiver Holding B.V. | 0.00% | New | 1,084 | $2K |
| Simplex Trading, LLC | 0.00% | Add +715.8% | 930 | $1K |
| Physician Wealth Advisors, Inc. | 0.00% | No change | 452 | $909 |
| Deutsche Bank AG | 0.00% | Reduce -99.6% | 224 | $450 |
| Arax Advisory Partners | 0.00% | New | 158 | $318 |
| EverSource Wealth Advisors, LLC | 0.00% | Reduce -10.9% | 155 | $311 |
| Versant Capital Management, Inc | 0.00% | New | 152 | $306 |
| PNC Financial Services Group, Inc. | 0.00% | Reduce -66.7% | 145 | $291 |
| True Wealth Design, LLC | 0.00% | Add +84.0% | 92 | $185 |
| Farther Finance Advisors, LLC | 0.00% | No change | 60 | $121 |
| Essential Partners LLC | 0.00% | New | 21 | $42 |
| SBI Securities Co., Ltd. | 0.00% | Reduce -73.5% | 18 | $36 |
| Bessemer Group Inc. | 0.00% | New | 90 | $0 |
| Covestor Ltd | 0.00% | No change | 23 | $0 |
"% of holder's portfolio" is MNTK's weight in each manager's 13F, not the share of Montauk Renewables Inc. the manager owns.