Montauk Renewables, Inc.
MNTK- Exchange
- Nasdaq
- Industry
- Gas & Other Services Combined
- SEC CIK
- 0001826600
No open-market purchases or sales by Montauk Renewables, Inc. insiders were filed in the last 90 days; 90 institutions reported holding it in 13F filings for Q2 2026, worth $33.3M in total; no superinvestor holds it.
13F holders, Q3 2025
Institutional positions in Montauk Renewables, Inc. as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 91
- +5 vs. Q2 2025
- Shares held
- 20.8M
- −159.2K (−0.8%) vs. Q2 2025
- Total value
- $41.7M
- −$4.72M (−10.2%) vs. Q2 2025
- New holders
- 13
- 25 more added
- Sold out
- 8
- 33 more reduced
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MNTK on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 90 | $33.3M |
| Q1 2026 | 94 | $24.0M |
| Q4 2025 | 83 | $33.3M |
| Q3 2025 | 91 | $41.7M |
| Q2 2025 | 86 | $46.4M |
| Q1 2025 | 93 | $45.4M |
| Q4 2024 | 96 | $88.6M |
| Q3 2024 | 95 | $115.6M |
| Q2 2024 | 111 | $130.7M |
| Q1 2024 | 114 | $98.2M |
| Q4 2023 | 105 | $212.1M |
| Q3 2023 | 95 | $209.4M |
| Q2 2023 | 93 | $176.1M |
| Q1 2023 | 94 | $189.0M |
| Q4 2022 | 97 | $268.3M |
| Q3 2022 | 90 | $393.4M |
| Q2 2022 | 76 | $209.0M |
| Q1 2022 | 47 | $156.3M |
| Q4 2021 | 26 | $126.2M |
| Q3 2021 | 20 | $70.1M |
| Q2 2021 | 20 | $21.2M |
| Q1 2021 | 24 | $42.3M |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding Montauk Renewables, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 4,266,765 | $8.58M | 0.00% | −109,449−2.5% | Reduced |
| Vanguard Group Inc | 3,951,495 | $7.94M | 0.00% | −23,499−0.6% | Reduced |
| Geode Capital Management, LLC | 1,687,618 | $3.39M | 0.00% | +9,831+0.6% | Added |
| Baader Bank INC | 1,605,000 | $3.23M | 0.27% | 00.0% | Unchanged |
| State Street Corp | 1,393,303 | $2.80M | 0.00% | +30,690+2.3% | Added |
| Dimensional Fund Advisors LP | 976,038 | $1.96M | 0.00% | −6,231−0.6% | Reduced |
| American Century Companies Inc | 955,111 | $1.92M | 0.00% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 545,009 | $1.10M | 0.00% | +20,896+4.0% | Added |
| Northern Trust Corp | 527,234 | $1.06M | 0.00% | +10,317+2.0% | Added |
| Hosking Partners LLP | 395,948 | $795.9K | 0.03% | +217+0.1% | Added |
| First Trust Advisors LP | 337,560 | $678.5K | 0.00% | −17,991−5.1% | Reduced |
| Renaissance Technologies LLC | 336,400 | $676.2K | 0.00% | −7,813−2.3% | Reduced |
| Bank of New York Mellon Corp | 265,973 | $534.6K | 0.00% | −6,917−2.5% | Reduced |
| Barclays PLC | 247,656 | $497.8K | 0.00% | +90,897+58.0% | Added |
| Morgan Stanley | 237,081 | $476.5K | 0.00% | −16,780−6.6% | Reduced |
| D. E. Shaw & Co., Inc. | 223,277 | $448.8K | 0.00% | +42,794+23.7% | Added |
| Gsa Capital Partners LLP | 212,504 | $427.0K | 0.04% | −31,157−12.8% | Reduced |
| Citadel Advisors LLC | 204,707 | $411.5K | 0.00% | +131,164+178.4% | Added |
| Millennium Management LLC | 201,735 | $405.5K | 0.00% | −14,343−6.6% | Reduced |
| JTC Employer Solutions Trusteee Ltd | 197,859 | $400.0K | 0.03% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 177,855 | $357.5K | 0.00% | +113,083+174.6% | Added |
| Goldman Sachs Group Inc | 165,759 | $333.2K | 0.00% | +73,171+79.0% | Added |
| Nuveen, LLC | 138,750 | $278.9K | 0.00% | 00.0% | Unchanged |
| Storebrand Asset Management AS | 131,861 | $265.0K | 0.00% | −86,159−39.5% | Reduced |
| Rhumbline Advisers | 125,712 | $252.7K | 0.00% | +19,831+18.7% | Added |
| Jane Street Group, LLC | 98,323 | $197.1K | 0.00% | −9,028−8.4% | Reduced |
| Alliancebernstein L.P. | 97,520 | $196.0K | 0.00% | +6,300+6.9% | Added |
| Rathbone Brothers plc | 92,000 | $184.9K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 72,527 | $145.8K | 0.00% | −10,903−13.1% | Reduced |
| Intech Investment Management LLC | 56,734 | $114.0K | 0.00% | +22,876+67.6% | Added |
| Russell Investments Group, Ltd. | 51,423 | $103.3K | 0.00% | −523−1.0% | Reduced |
| Wells Fargo & Company | 49,404 | $99.3K | 0.00% | +8,017+19.4% | Added |
| Two Sigma Securities, LLC | 47,887 | $96.3K | 0.01% | +16,319+51.7% | Added |
| Royal Bank of Canada | 39,803 | $81.0K | 0.00% | −29,142−42.3% | Reduced |
| STRS Ohio | 40,000 | $80.4K | 0.00% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 33,876 | $69.0K | 0.00% | −38,000−52.9% | Reduced |
| Andina Capital Management, LLC | 32,465 | $65.3K | 0.04% | +3,835+13.4% | Added |
| Arrowstreet Capital, Limited Partnership | 32,288 | $64.9K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 32,028 | $64.4K | 0.00% | −5,709−15.1% | Reduced |
| Bank of America Corp | 30,737 | $61.8K | 0.00% | −3,758−10.9% | Reduced |
| Los Angeles Capital Management LLC | 29,205 | $58.7K | 0.00% | 00.0% | Unchanged |
| XTX Topco Ltd | 25,178 | $50.6K | 0.00% | +25,178 | New |
| R Squared Ltd | 24,491 | $49.2K | 0.02% | +24,491 | New |
| Invesco Ltd. | 23,001 | $46.2K | 0.00% | +2,224+10.7% | Added |
| Manufacturers Life Insurance Company, The | 22,282 | $44.8K | 0.00% | −720−3.1% | Reduced |
| Susquehanna International Group, LLP | 21,845 | $43.9K | 0.00% | −90,628−80.6% | Reduced |
| Squarepoint Ops LLC | 17,997 | $36.2K | 0.00% | −8,838−32.9% | Reduced |
| Two Sigma Investments, LP | 16,955 | $34.1K | 0.00% | +16,955 | New |
| AQR Capital Management LLC | 16,478 | $33.1K | 0.00% | −12,406−43.0% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 16,326 | $32.8K | 0.00% | 00.0% | Unchanged |
| Quadrature Capital Ltd | 15,707 | $31.7K | 0.00% | +15,707 | New |
| Neuberger Berman Group LLC | 14,622 | $29.4K | 0.00% | −1,490−9.2% | Reduced |
| Virtu Financial LLC | 14,151 | $28.0K | 0.00% | +14,151 | New |
| Voya Investment Management LLC | 13,694 | $27.5K | 0.00% | −8,054−37.0% | Reduced |
| Citigroup Inc | 13,690 | $27.5K | 0.00% | −16,095−54.0% | Reduced |
| Engineers Gate Manager LP | 13,626 | $27.4K | 0.00% | +13,626 | New |
| BNP Paribas Arbitrage, SA | 13,175 | $26.5K | 0.00% | +6,323+92.3% | Added |
| Nisa Investment Advisors, LLC | 11,800 | $23.7K | 0.00% | +104+0.9% | Added |
| ProShare Advisors LLC | 11,506 | $23.1K | 0.00% | −2,292−16.6% | Reduced |
| CI Private Wealth, LLC | 11,000 | $22.1K | 0.00% | −5,000−31.3% | Reduced |
| Two Sigma Advisers, LP | 10,300 | $20.7K | 0.00% | +10,300 | New |
| Tower Research Capital LLC (TRC) | 10,032 | $20.2K | 0.00% | −7,021−41.2% | Reduced |
| N.E.W. Advisory Services LLC | 10,000 | $20.1K | 0.00% | 00.0% | Unchanged |
| Acadian Asset Management LLC | 10,378 | $20.0K | 0.00% | +10,378 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 8,835 | $17.8K | 0.00% | −56,988−86.6% | Reduced |
| Ameritas Investment Partners, Inc. | 6,625 | $13.3K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 6,061 | $12.2K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 4,785 | $9.62K | 0.00% | +3+0.1% | Added |
| Meeder Asset Management Inc | 4,199 | $8.44K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 3,689 | $7.42K | 0.00% | +2,224+151.8% | Added |
| New York State Common Retirement Fund | 3,365 | $6.76K | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 2,578 | $5.18K | 0.00% | +1,677+186.1% | Added |
| Amalgamated Bank | 2,235 | $4.00K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 1,646 | $3.31K | 0.00% | +280+20.5% | Added |
| Private Wealth Management Group, LLC | 1,628 | $3.27K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 1,438 | $3.00K | 0.00% | −1,871−56.5% | Reduced |
| Towarzystwo Funduszy Inwestycyjnych Pzu SA | 1,200 | $2.41K | 0.00% | 00.0% | Unchanged |
| Optiver Holding B.V. | 1,084 | $2.18K | 0.00% | +1,084 | New |
| Simplex Trading, LLC | 930 | $1.00K | 0.00% | +816+715.8% | Added |
| UMA Financial Services, Inc. | 452 | $909 | 0.00% | 00.0% | Unchanged |
| Deutsche Bank AG | 224 | $450 | 0.00% | −57,849−99.6% | Reduced |
| SRS Capital Advisors, Inc. | 158 | $318 | 0.00% | +158 | New |
| EverSource Wealth Advisors, LLC | 155 | $311 | 0.00% | −19−10.9% | Reduced |
| Versant Capital Management, Inc | 152 | $306 | 0.00% | +152 | New |
| The PNC Financial Services Group, Inc. | 145 | $291 | 0.00% | −290−66.7% | Reduced |
| True Wealth Design, LLC | 92 | $185 | 0.00% | +42+84.0% | Added |
| Farther Finance Advisors, LLC | 60 | $121 | 0.00% | 00.0% | Unchanged |
| Essential Partners LLC | 21 | $42 | 0.00% | +21 | New |
| SBI Securities Co., Ltd. | 18 | $36 | 0.00% | −50−73.5% | Reduced |
| Covestor Ltd | 23 | $0 | 0.00% | 00.0% | Unchanged |
| Bessemer Group Inc | 90 | $0 | 0.00% | +90 | New |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −56,901−100.0% | Sold out |
| MetLife Investment Management | 0 | $0 | 0.00% | −44,434−100.0% | Sold out |
| Abc Arbitrage SA | 0 | $0 | 0.00% | −38,167−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −26,774−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −26,234−100.0% | Sold out |
| State Board of Administration of Florida Retirement System | 0 | $0 | 0.00% | −19,080−100.0% | Sold out |
| Shell Asset Management Co | 0 | $0 | 0.00% | −6,794−100.0% | Sold out |
| Allworth Financial LP | 0 | $0 | 0.00% | −4−100.0% | Sold out |