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, Q4 2025
Institutional positions in Montauk Renewables, Inc. as of Dec 31, 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
- 83
- −8 vs. Q3 2025
- Shares held
- 19.9M
- −859.4K (−4.1%) vs. Q3 2025
- Total value
- $33.3M
- −$8.44M (−20.2%) vs. Q3 2025
- New holders
- 4
- 25 more added
- Sold out
- 12
- 34 more reduced
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Montauk Renewables, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Bessemer Group Inc | 90 | $0 | 0.00% | 00.0% | Unchanged |
| Covestor Ltd | 22 | $0 | 0.00% | −1−4.3% | Reduced |
| True Wealth Design, LLC | 12 | $21 | 0.00% | −80−87.0% | Reduced |
| SBI Securities Co., Ltd. | 14 | $23 | 0.00% | −4−22.2% | Reduced |
| Allworth Financial LP | 15 | $26 | 0.00% | +15 | New |
| Essential Partners LLC | 22 | $37 | 0.00% | +1+4.8% | Added |
| Farther Finance Advisors, LLC | 60 | $100 | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 86 | $144 | 0.00% | +86 | New |
| EverSource Wealth Advisors, LLC | 123 | $205 | 0.00% | −32−20.6% | Reduced |
| The PNC Financial Services Group, Inc. | 288 | $481 | 0.00% | +143+98.6% | Added |
| Optiver Holding B.V. | 1,084 | $1.81K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 1,127 | $2.00K | 0.00% | −311−21.6% | Reduced |
| Towarzystwo Funduszy Inwestycyjnych Pzu SA | 1,200 | $2.00K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 2,002 | $3.00K | 0.00% | −37,801−95.0% | Reduced |
| Amalgamated Bank | 2,114 | $4.00K | 0.00% | −121−5.4% | Reduced |
| Sterling Capital Management LLC | 3,145 | $5.25K | 0.00% | −544−14.7% | Reduced |
| New York State Common Retirement Fund | 3,365 | $5.62K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 4,138 | $6.91K | 0.00% | −647−13.5% | Reduced |
| Tower Research Capital LLC (TRC) | 5,875 | $9.81K | 0.00% | −4,157−41.4% | Reduced |
| GAMMA Investing LLC | 6,002 | $10.0K | 0.00% | +3,424+132.8% | Added |
| Legal & General Group Plc | 6,061 | $10.1K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 6,625 | $11.1K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 7,263 | $12.1K | 0.00% | −6,427−46.9% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 8,324 | $13.9K | 0.00% | −511−5.8% | Reduced |
| FMR LLC | 9,158 | $15.3K | 0.00% | +7,512+456.4% | Added |
| N.E.W. Advisory Services LLC | 10,000 | $16.7K | 0.00% | 00.0% | Unchanged |
| Point72 Asset Management, L.P. | 10,418 | $17.4K | 0.00% | +10,418 | New |
| Acadian Asset Management LLC | 11,932 | $19.0K | 0.00% | +1,554+15.0% | Added |
| ProShare Advisors LLC | 12,291 | $20.5K | 0.00% | +785+6.8% | Added |
| Neuberger Berman Group LLC | 12,525 | $20.9K | 0.00% | −2,097−14.3% | Reduced |
| Engineers Gate Manager LP | 13,574 | $22.7K | 0.00% | −52−0.4% | Reduced |
| Voya Investment Management LLC | 13,694 | $22.9K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 14,407 | $24.1K | 0.00% | +1,232+9.4% | Added |
| AQR Capital Management LLC | 14,557 | $24.3K | 0.00% | −1,921−11.7% | Reduced |
| Susquehanna International Group, LLP | 15,812 | $26.4K | 0.00% | −6,033−27.6% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 16,326 | $27.3K | 0.00% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 16,800 | $28.1K | 0.00% | +6,500+63.1% | Added |
| Manufacturers Life Insurance Company, The | 20,582 | $34.4K | 0.00% | −1,700−7.6% | Reduced |
| Two Sigma Investments, LP | 23,215 | $38.8K | 0.00% | +6,260+36.9% | Added |
| Millennium Management LLC | 25,650 | $42.8K | 0.00% | −176,085−87.3% | Reduced |
| HRT Financial LP | 26,353 | $44.0K | 0.00% | +26,353 | New |
| R Squared Ltd | 28,945 | $48.3K | 0.02% | +4,454+18.2% | Added |
| Invesco Ltd. | 31,055 | $51.9K | 0.00% | +8,054+35.0% | Added |
| Intech Investment Management LLC | 31,486 | $52.6K | 0.00% | −25,248−44.5% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 32,126 | $53.6K | 0.00% | +98+0.3% | Added |
| Arrowstreet Capital, Limited Partnership | 32,288 | $53.9K | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 32,588 | $55.3K | 0.00% | −18,835−36.6% | Reduced |
| Price T Rowe Associates Inc | 33,876 | $57.0K | 0.00% | 00.0% | Unchanged |
| Los Angeles Capital Management LLC | 29,205 | $58.7K | 0.00% | 00.0% | Unchanged |
| Two Sigma Securities, LLC | 37,293 | $62.3K | 0.01% | −10,594−22.1% | Reduced |
| STRS Ohio | 40,000 | $66.8K | 0.00% | 00.0% | Unchanged |
| Andina Capital Management, LLC | 41,572 | $69.4K | 0.04% | +9,107+28.1% | Added |
| Deutsche Bank AG | 47,007 | $78.5K | 0.00% | +46,783+20,885.3% | Added |
| Bank of America Corp | 59,149 | $98.8K | 0.00% | +28,412+92.4% | Added |
| UBS Group AG | 69,056 | $115.3K | 0.00% | −3,471−4.8% | Reduced |
| Wells Fargo & Company | 75,049 | $125.3K | 0.00% | +25,645+51.9% | Added |
| Rathbone Brothers plc | 92,000 | $153.6K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 96,708 | $161.5K | 0.00% | −29,004−23.1% | Reduced |
| Alliancebernstein L.P. | 97,520 | $162.9K | 0.00% | 00.0% | Unchanged |
| Storebrand Asset Management AS | 99,407 | $166.0K | 0.00% | −32,454−24.6% | Reduced |
| Barclays PLC | 109,376 | $182.7K | 0.00% | −138,280−55.8% | Reduced |
| Jane Street Group, LLC | 130,687 | $228.9K | 0.00% | +32,364+32.9% | Added |
| Nuveen, LLC | 138,750 | $231.7K | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 172,192 | $287.6K | 0.00% | −5,663−3.2% | Reduced |
| D. E. Shaw & Co., Inc. | 192,348 | $321.2K | 0.00% | −30,929−13.9% | Reduced |
| Goldman Sachs Group Inc | 196,032 | $327.4K | 0.00% | +30,273+18.3% | Added |
| Citadel Advisors LLC | 200,021 | $334.0K | 0.00% | −4,686−2.3% | Reduced |
| Bank of New York Mellon Corp | 209,568 | $350.0K | 0.00% | −56,405−21.2% | Reduced |
| JTC Employer Solutions Trusteee Ltd | 197,859 | $363.0K | 0.02% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 242,646 | $405.0K | 0.03% | +30,142+14.2% | Added |
| Morgan Stanley | 328,662 | $548.9K | 0.00% | +91,581+38.6% | Added |
| First Trust Advisors LP | 338,219 | $564.8K | 0.00% | +659+0.2% | Added |
| Renaissance Technologies LLC | 342,700 | $572.3K | 0.00% | +6,300+1.9% | Added |
| Hosking Partners LLP | 396,250 | $661.7K | 0.02% | +302+0.1% | Added |
| Northern Trust Corp | 465,735 | $777.8K | 0.00% | −61,499−11.7% | Reduced |
| Charles Schwab Investment Management Inc | 544,649 | $909.6K | 0.00% | −360−0.1% | Reduced |
| Dimensional Fund Advisors LP | 832,534 | $1.39M | 0.00% | −143,504−14.7% | Reduced |
| American Century Companies Inc | 955,111 | $1.60M | 0.00% | 00.0% | Unchanged |
| State Street Corp | 1,385,960 | $2.31M | 0.00% | −7,343−0.5% | Reduced |
| Baader Bank INC | 1,605,000 | $2.68M | 0.22% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 1,724,933 | $2.88M | 0.00% | +37,315+2.2% | Added |
| Vanguard Group Inc | 3,528,926 | $5.89M | 0.00% | −422,569−10.7% | Reduced |
| BlackRock, Inc. | 4,324,286 | $7.22M | 0.00% | +57,521+1.3% | Added |
| XTX Topco Ltd | 0 | $0 | 0.00% | −25,178−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −17,997−100.0% | Sold out |
| Quadrature Capital Ltd | 0 | $0 | 0.00% | −15,707−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −14,151−100.0% | Sold out |
| Nisa Investment Advisors, LLC | 0 | $0 | 0.00% | −11,800−100.0% | Sold out |
| CI Private Wealth, LLC | 0 | $0 | 0.00% | −11,000−100.0% | Sold out |
| Meeder Asset Management Inc | 0 | $0 | 0.00% | −4,199−100.0% | Sold out |
| Private Wealth Management Group, LLC | 0 | $0 | 0.00% | −1,628−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −930−100.0% | Sold out |
| UMA Financial Services, Inc. | 0 | $0 | 0.00% | −452−100.0% | Sold out |
| SRS Capital Advisors, Inc. | 0 | $0 | 0.00% | −158−100.0% | Sold out |
| Versant Capital Management, Inc | 0 | $0 | 0.00% | −152−100.0% | Sold out |