Montauk Renewables, Inc. - MNTK
Detailed investor-level table based on 13F positions.
Early Q1 2026 data: only 2 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | History | Added to | 4,324,286 | 7,221 | 0.0% | 0.0% | 1 | +57,521 | 1.35% | Q4 2025 | Feb 12, 2026 |
| VANGUARD GROUP INC | History | Reduced | 3,528,926 | 5,893 | 0.0% | 0.0% | 2 | -422,569 | -10.69% | Q4 2025 | Jan 29, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Added to | 1,724,933 | 2,881 | 0.0% | 0.0% | 3 | +37,315 | 2.21% | Q4 2025 | Feb 09, 2026 |
| Baader Bank Aktiengesellschaft | History | No change | 1,605,000 | 2,680 | 0.18% | 0.21% | 4 | 0 | 0.0% | Q4 2025 | Feb 05, 2026 |
| STATE STREET CORP | History | Reduced | 1,385,960 | 2,314 | 0.0% | 0.0% | 5 | -7,343 | -0.53% | Q4 2025 | Feb 13, 2026 |
| AMERICAN CENTURY COMPANIES INC | History | No change | 955,111 | 1,595 | 0.0% | 0.0% | 6 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| DIMENSIONAL FUND ADVISORS LP | History | Reduced | 832,534 | 1,390 | 0.0% | 0.0% | 7 | -143,504 | -14.7% | Q4 2025 | Feb 12, 2026 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | History | Reduced | 544,649 | 909 | 0.0% | 0.0% | 8 | -360 | -0.07% | Q4 2025 | Feb 13, 2026 |
| NORTHERN TRUST CORP | History | Reduced | 465,735 | 777 | 0.0% | 0.0% | 9 | -61,499 | -11.66% | Q4 2025 | Feb 17, 2026 |
| Hosking Partners LLP | History | Added to | 396,250 | 661 | 0.02% | 0.03% | 10 | +302 | 0.08% | Q4 2025 | Feb 04, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | History | Added to | 342,700 | 572 | 0.0% | 0.0% | 11 | +6,300 | 1.87% | Q4 2025 | Feb 12, 2026 |
| FIRST TRUST ADVISORS LP | History | Added to | 338,219 | 564 | 0.0% | 0.0% | 12 | +659 | 0.2% | Q4 2025 | Feb 13, 2026 |
| MORGAN STANLEY | History | Added to | 328,662 | 548 | 0.0% | 0.0% | 13 | +91,581 | 38.63% | Q4 2025 | Feb 13, 2026 |
| GSA CAPITAL PARTNERS LLP | History | Added to | 242,646 | 405 | 0.03% | 0.04% | 14 | +30,142 | 14.18% | Q4 2025 | Feb 06, 2026 |
| JTC Employer Solutions Trustee Ltd | History | No change | 197,859 | 363 | 0.02% | 0.03% | 15 | 0 | 0.0% | Q4 2025 | Feb 10, 2026 |
| Bank of New York Mellon Corp | History | Reduced | 209,568 | 349 | 0.0% | 0.0% | 16 | -56,405 | -21.21% | Q4 2025 | Feb 10, 2026 |
| CITADEL ADVISORS LLC | History | Reduced | 200,021 | 334 | 0.0% | 0.0% | 17 | -4,686 | -2.29% | Q4 2025 | Feb 17, 2026 |
| GOLDMAN SACHS GROUP INC | History | Added to | 196,032 | 327 | 0.0% | 0.0% | 18 | +30,273 | 18.26% | Q4 2025 | Mar 25, 2026 |
| D. E. Shaw & Co., Inc. | History | Reduced | 192,348 | 321 | 0.0% | 0.0% | 19 | -30,929 | -13.85% | Q4 2025 | Feb 17, 2026 |
| JPMORGAN CHASE & CO | History | Reduced | 172,192 | 287 | 0.0% | 0.0% | 20 | -5,663 | -3.18% | Q4 2025 | Feb 11, 2026 |
| Nuveen, LLC | History | No change | 138,750 | 231 | 0.0% | 0.0% | 21 | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |
| JANE STREET GROUP, LLC | History | Added to | 130,687 | 228 | 0.0% | 0.0% | 22 | +32,364 | 32.92% | Q4 2025 | Feb 12, 2026 |
| BARCLAYS PLC | History | Reduced | 109,376 | 182 | 0.0% | 0.0% | 23 | -138,280 | -55.84% | Q4 2025 | Feb 13, 2026 |
| ALLIANCEBERNSTEIN L.P. | History | No change | 97,520 | 162 | 0.0% | 0.0% | 24 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| RHUMBLINE ADVISERS | History | Reduced | 96,708 | 161 | 0.0% | 0.0% | 25 | -29,004 | -23.07% | Q4 2025 | Feb 13, 2026 |
| Rathbones Group PLC | History | No change | 92,000 | 153 | 0.0% | 0.0% | 26 | 0 | 0.0% | Q4 2025 | Feb 06, 2026 |
| WELLS FARGO & COMPANY/MN | History | Added to | 75,049 | 125 | 0.0% | 0.0% | 27 | +25,645 | 51.91% | Q4 2025 | Feb 13, 2026 |
| UBS Group AG | History | Reduced | 69,056 | 115 | 0.0% | 0.0% | 28 | -3,471 | -4.79% | Q4 2025 | Jan 29, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Added to | 59,149 | 98 | 0.0% | 0.0% | 29 | +28,412 | 92.44% | Q4 2025 | Feb 17, 2026 |
| DEUTSCHE BANK AG\ | History | Added to | 47,007 | 78 | 0.0% | — | 30 | +46,783 | 20885.27% | Q4 2025 | Feb 11, 2026 |
| Andina Capital Management, LLC | History | Added to | 41,572 | 69 | 0.04% | 0.04% | 31 | +9,107 | 28.05% | Q4 2025 | Feb 12, 2026 |
| STRS OHIO | History | No change | 40,000 | 66 | 0.0% | 0.0% | 32 | 0 | 0.0% | Q4 2025 | Feb 02, 2026 |
| TWO SIGMA SECURITIES, LLC | History | Reduced | 37,293 | 62 | 0.01% | 0.01% | 33 | -10,594 | -22.12% | Q4 2025 | Feb 17, 2026 |
| LOS ANGELES CAPITAL MANAGEMENT LLC | History | No change | 29,205 | 58 | 0.0% | 0.0% | 34 | 0 | 0.0% | Q4 2025 | Feb 11, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | History | No change | 33,876 | 57 | 0.0% | 0.0% | 35 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Russell Investments Group, Ltd. | History | Reduced | 32,588 | 55 | 0.0% | 0.0% | 36 | -18,835 | -36.63% | Q4 2025 | Feb 17, 2026 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | History | Added to | 32,126 | 53 | 0.0% | 0.0% | 38 | +98 | 0.31% | Q4 2025 | Feb 17, 2026 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | History | No change | 32,288 | 53 | 0.0% | 0.0% | 37 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| INTECH INVESTMENT MANAGEMENT LLC | History | Reduced | 31,486 | 52 | 0.0% | 0.0% | 39 | -25,248 | -44.5% | Q4 2025 | Feb 10, 2026 |
| Invesco Ltd. | History | Added to | 31,055 | 51 | 0.0% | 0.0% | 40 | +8,054 | 35.02% | Q4 2025 | Feb 19, 2026 |
| R Squared Ltd | History | Added to | 28,945 | 48 | 0.02% | 0.02% | 41 | +4,454 | 18.19% | Q4 2025 | Jan 30, 2026 |
| HRT FINANCIAL LP | History | New | 26,353 | 44 | 0.0% | — | 42 | +26,353 | New | Q4 2025 | Feb 12, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | Reduced | 25,650 | 42 | 0.0% | 0.0% | 43 | -176,085 | -87.29% | Q4 2025 | Feb 17, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | Added to | 23,215 | 38 | 0.0% | 0.0% | 44 | +6,260 | 36.92% | Q4 2025 | Feb 17, 2026 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | History | New | 20,582 | 34 | 0.0% | — | 45 | +20,582 | New | Q4 2025 | Feb 13, 2026 |
| TWO SIGMA ADVISERS, LP | History | Added to | 16,800 | 28 | 0.0% | 0.0% | 46 | +6,500 | 63.11% | Q4 2025 | Feb 17, 2026 |
| Police & Firemen's Retirement System of New Jersey | History | No change | 16,326 | 27 | 0.0% | 0.0% | 47 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Reduced | 15,812 | 26 | 0.0% | 0.0% | 48 | -6,033 | -27.62% | Q4 2025 | Feb 17, 2026 |
| AQR CAPITAL MANAGEMENT LLC | History | Reduced | 14,557 | 24 | 0.0% | 0.0% | 50 | -1,921 | -11.66% | Q4 2025 | Feb 17, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | Added to | 14,407 | 24 | 0.0% | 0.0% | 49 | +1,232 | 9.35% | Q4 2025 | Feb 10, 2026 |
| Engineers Gate Manager LP | History | Reduced | 13,574 | 22 | 0.0% | 0.0% | 52 | -52 | -0.38% | Q4 2025 | Feb 17, 2026 |
| VOYA INVESTMENT MANAGEMENT LLC | History | No change | 13,694 | 22 | 0.0% | 0.0% | 51 | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |
| Neuberger Berman Group LLC | History | Reduced | 12,525 | 20 | 0.0% | 0.0% | 54 | -2,097 | -14.34% | Q4 2025 | Feb 13, 2026 |
| ProShare Advisors LLC | History | Added to | 12,291 | 20 | 0.0% | 0.0% | 53 | +785 | 6.82% | Q4 2025 | Feb 06, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | History | Added to | 11,932 | 19 | 0.0% | 0.0% | 55 | +1,554 | 14.97% | Q4 2025 | Feb 10, 2026 |
| Point72 Asset Management, L.P. | History | New | 10,418 | 17 | 0.0% | — | 56 | +10,418 | New | Q4 2025 | Feb 17, 2026 |
| N.E.W. Advisory Services LLC | History | No change | 10,000 | 16 | 0.0% | 0.0% | 57 | 0 | 0.0% | Q4 2025 | Jan 28, 2026 |
| FMR LLC | History | Added to | 9,158 | 15 | 0.0% | 0.0% | 58 | +7,512 | 456.38% | Q4 2025 | Feb 17, 2026 |
| Zurcher Kantonalbank (Zurich Cantonalbank) | History | Reduced | 8,324 | 13 | 0.0% | 0.0% | 59 | -511 | -5.78% | Q4 2025 | Jan 27, 2026 |
| CITIGROUP INC | History | Reduced | 7,263 | 12 | 0.0% | 0.0% | 60 | -6,427 | -46.95% | Q4 2025 | Feb 13, 2026 |
| Ameritas Investment Partners, Inc. | History | No change | 6,625 | 11 | 0.0% | 0.0% | 61 | 0 | 0.0% | Q4 2025 | Feb 11, 2026 |
| GAMMA Investing LLC | History | Added to | 6,002 | 10 | 0.0% | 0.0% | 63 | +3,424 | 132.82% | Q4 2025 | Jan 05, 2026 |
| Legal & General Group Plc | History | No change | 6,061 | 10 | 0.0% | 0.0% | 62 | 0 | 0.0% | Q4 2025 | Feb 09, 2026 |
| Tower Research Capital LLC (TRC) | History | Reduced | 5,875 | 9 | 0.0% | 0.0% | 64 | -4,157 | -41.44% | Q4 2025 | Feb 17, 2026 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | History | Reduced | 4,138 | 6 | 0.0% | 0.0% | 65 | -647 | -13.52% | Q4 2025 | Feb 17, 2026 |
| Sterling Capital Management LLC | History | Reduced | 3,145 | 5 | 0.0% | 0.0% | 67 | -544 | -14.75% | Q4 2025 | Feb 13, 2026 |
| NEW YORK STATE COMMON RETIREMENT FUND | History | No change | 3,365 | 5 | 0.0% | 0.0% | 66 | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |
| AMALGAMATED BANK | History | Reduced | 2,114 | 4 | 0.0% | 0.0% | 68 | -121 | -5.41% | Q4 2025 | Feb 05, 2026 |
| ROYAL BANK OF CANADA | History | New | 2,002 | 3 | 0.0% | — | 69 | +2,002 | New | Q4 2025 | Feb 17, 2026 |
| CWM, LLC | History | Reduced | 1,127 | 2 | 0.0% | 0.0% | 70 | -311 | -21.63% | Q4 2025 | Jan 26, 2026 |
| TOWARZYSTWO FUNDUSZY INWESTYCYJNYCH PZU SA | History | No change | 1,200 | 2 | 0.0% | 0.0% | 71 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| Optiver Holding B.V. | History | No change | 1,084 | 1 | 0.0% | 0.0% | 72 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| XTX Topco Ltd | History | Closed out | 0 | 0 | — | 0.0% | — | -25,178 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Squarepoint Ops LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -17,997 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Quadrature Capital Ltd | History | Closed out | 0 | 0 | — | 0.0% | — | -15,707 | -100.0% | Q3 2025 | Nov 13, 2025 |
| Virtu Financial LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -14,151 | -100.0% | Q3 2025 | Nov 14, 2025 |
| NISA INVESTMENT ADVISORS, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -11,800 | -100.0% | Q3 2025 | Oct 23, 2025 |
| Corient Private Wealth LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -11,000 | -100.0% | Q3 2025 | Nov 14, 2025 |
| MEEDER ASSET MANAGEMENT INC | History | Closed out | 0 | 0 | — | 0.0% | — | -4,199 | -100.0% | Q3 2025 | Oct 24, 2025 |
| Private Wealth Management Group, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -1,628 | -100.0% | Q3 2025 | Oct 17, 2025 |
| SIMPLEX TRADING, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -930 | -100.0% | Q3 2025 | Nov 12, 2025 |
| Physician Wealth Advisors, Inc. | History | Closed out | 0 | 0 | — | — | — | -452 | -100.0% | Q3 2025 | Nov 04, 2025 |
| Arax Advisory Partners | History | Closed out | 0 | 0 | — | — | — | -158 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Versant Capital Management, Inc | History | Closed out | 0 | 0 | — | — | — | -152 | -100.0% | Q3 2025 | Oct 27, 2025 |
| PNC FINANCIAL SERVICES GROUP, INC. | History | Added to | 288 | 0 | — | — | — | +143 | 98.62% | Q4 2025 | Feb 06, 2026 |
| ROTHSCHILD INVESTMENT LLC | History | New | 86 | 0 | — | — | — | +86 | New | Q4 2025 | Feb 10, 2026 |
| True Wealth Design, LLC | History | Reduced | 12 | 0 | — | — | — | -80 | -86.96% | Q4 2025 | Jan 08, 2026 |
| EverSource Wealth Advisors, LLC | History | Reduced | 123 | 0 | — | — | — | -32 | -20.65% | Q4 2025 | Feb 06, 2026 |
| Allworth Financial LP | History | New | 15 | 0 | — | — | — | +15 | New | Q4 2025 | Feb 05, 2026 |
| SBI Securities Co., Ltd. | History | Reduced | 14 | 0 | — | — | — | -4 | -22.22% | Q4 2025 | Feb 03, 2026 |
| Covestor Ltd | History | Reduced | 22 | 0 | — | — | — | -1 | -4.35% | Q4 2025 | Feb 06, 2026 |
| BESSEMER GROUP INC | History | No change | 90 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 05, 2026 |
| Farther Finance Advisors, LLC | History | No change | 60 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Jan 23, 2026 |