MNTK Montauk Renewables, Inc.
Montauk Renewables, Inc. (MNTK) Institutional Ownership
What the institutions did with MNTK last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 4.7M | 22.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.7M | 12.7% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.9M | 8.8% |
| Baader Bank Aktiengesellschaft | 1.6M | 7.5% |
| STATE STREET CORP | 1.4M | 6.4% |
| BARCLAYS PLC | 953.5K | 4.5% |
| AMERICAN CENTURY COMPANIES INC | 950.4K | 4.4% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 539.3K | 2.5% |
| NORTHERN TRUST CORP | 536.1K | 2.5% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 469.1K | 2.2% |
| DIMENSIONAL FUND ADVISORS LP | 448.8K | 2.1% |
| VANGUARD FIDUCIARY TRUST CO | 438.8K | 2.1% |
| Hosking Partners LLP | 390.5K | 1.8% |
| FIRST TRUST ADVISORS LP | 381.9K | 1.8% |
| GOLDMAN SACHS GROUP INC | 377.3K | 1.8% |
| RENAISSANCE TECHNOLOGIES LLC | 364.8K | 1.7% |
| JPMORGAN CHASE & CO | 271.0K | 1.3% |
| AQR CAPITAL MANAGEMENT LLC | 238.2K | 1.1% |
| GSA CAPITAL PARTNERS LLP | 201.1K | 0.9% |
| JTC Employer Solutions Trustee Ltd | 197.9K | 0.9% |
| Bank of New York Mellon Corp | 195.9K | 0.9% |
| MORGAN STANLEY | 167.2K | 0.8% |
| Nuveen, LLC | 162.0K | 0.8% |
| ALLIANCEBERNSTEIN L.P. | 142.1K | 0.7% |
| Caprock Group, LLC | 119.8K | 0.6% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| BlackRock, Inc. | Increased | 4.2M | 4.7M | +490.9K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 736.6K | 448.8K | -287.8K |
| AQR CAPITAL MANAGEMENT LLC | Increased | 38.4K | 238.2K | +199.8K |
| MILLENNIUM MANAGEMENT LLC | Reduced | 206.9K | 43.5K | -163.4K |
| MARSHALL WACE, LLP | Reduced | 204.6K | 80.5K | -124.1K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 1.8M | 1.9M | +120.0K |
| Caprock Group, LLC | New | 0 | 119.8K | +119.8K |
| Rathbones Group PLC | Reduced | 204.0K | 92.0K | -112.0K |
| JPMORGAN CHASE & CO | Increased | 162.3K | 271.0K | +108.7K |
| MORGAN STANLEY | Reduced | 261.4K | 167.2K | -94.2K |
| GSA CAPITAL PARTNERS LLP | Reduced | 289.9K | 201.1K | -88.8K |
| BARCLAYS PLC | Reduced | 1.0M | 953.5K | -85.4K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 388.9K | 469.1K | +80.1K |
| FIRST TRUST ADVISORS LP | Increased | 312.0K | 381.9K | +69.9K |
| CITADEL ADVISORS LLC | New | 0 | 58.8K | +58.8K |
| GOLDMAN SACHS GROUP INC | Increased | 331.2K | 377.3K | +46.1K |
| ALLIANCEBERNSTEIN L.P. | Increased | 97.5K | 142.1K | +44.6K |
| JANE STREET GROUP, LLC | Sold Out | 35.6K | 0 | -35.6K |
| WELLS FARGO & COMPANY/MN | Increased | 25.2K | 58.5K | +33.3K |
| IEQ CAPITAL, LLC | New | 0 | 33.1K | +33.1K |
| NORTHERN TRUST CORP | Increased | 505.4K | 536.1K | +30.7K |
| LOS ANGELES CAPITAL MANAGEMENT LLC | Sold Out | 29.2K | 0 | -29.2K |
| Quadrature Capital Ltd | Sold Out | 26.9K | 0 | -26.9K |
| UBS Group AG | Increased | 41.9K | 68.6K | +26.8K |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 56.1K | 81.8K | +25.7K |
| Russell Investments Group, Ltd. | Increased | 31.3K | 56.5K | +25.2K |
| PRUDENTIAL FINANCIAL INC | Increased | 14.8K | 40.0K | +25.2K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Sold Out | 24.5K | 0 | -24.5K |
| Squarepoint Ops LLC | Reduced | 35.9K | 12.1K | -23.8K |
| Boyer Financial Services, Inc. | Sold Out | 23.0K | 0 | -23.0K |
| Nuveen, LLC | Increased | 139.6K | 162.0K | +22.4K |
| J. Derek Lewis & Associates Inc. | Increased | 85.0K | 106.5K | +21.5K |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | Sold Out | 19.0K | 0 | -19.0K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Increased | 520.6K | 539.3K | +18.7K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 2.7M | 2.7M | +18.2K |
| Vontobel Holding Ltd. | New | 0 | 17.9K | +17.9K |
| D. E. Shaw & Co., Inc. | Reduced | 118.3K | 101.5K | -16.8K |
| NEUBERGER BERMAN GROUP LLC | Sold Out | 16.7K | 0 | -16.7K |
| TWO SIGMA SECURITIES, LLC | Sold Out | 16.5K | 0 | -16.5K |
| CITIGROUP INC | Increased | 15.8K | 31.8K | +16.0K |
| BANK OF AMERICA CORP /DE/ | Reduced | 60.7K | 45.1K | -15.6K |
| Centiva Capital, LP | New | 0 | 14.4K | +14.4K |
| VOYA INVESTMENT MANAGEMENT LLC | Sold Out | 13.7K | 0 | -13.7K |
| Mariner, LLC | New | 0 | 13.6K | +13.6K |
| Tidal Investments LLC | Sold Out | 11.7K | 0 | -11.7K |
| ROYAL BANK OF CANADA | Increased | 3.0K | 14.2K | +11.2K |
| Point72 Asset Management, L.P. | Sold Out | 10.9K | 0 | -10.9K |
| Cerity Partners LLC | New | 0 | 10.4K | +10.4K |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | New | 0 | 10.3K | +10.3K |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 354.6K | 364.8K | +10.2K |
| STRS OHIO | Increased | 40.0K | 48.8K | +8.8K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | Reduced | 7.9K | 246 | -7.6K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 432.3K | 438.8K | +6.5K |
| Hosking Partners LLP | Reduced | 396.9K | 390.5K | -6.4K |
| STOREBRAND ASSET MANAGEMENT AS | Increased | 82.2K | 88.1K | +5.9K |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | 14.7K | 10.5K | -4.2K |
| STATE STREET CORP | Increased | 1.4M | 1.4M | +4.2K |
| XTX Topco Ltd | Reduced | 14.2K | 10.1K | -4.1K |
| SIMPLEX TRADING, LLC | Reduced | 4.9K | 864 | -4.1K |
| AMERICAN CENTURY COMPANIES INC | Reduced | 954.5K | 950.4K | -4.0K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.