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