MONTAUK RENEWABLES INC MNTK
COM · Common Stock · CUSIP 61218C103
- SectorUtilities
- IndustryGas & Other Services Combined
- HeadquartersPittsburgh, PA
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($146.1k this quarter). Holder counts are more reliable. Shares outstanding: 142.4m as of 2025-03-07, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $2.09. Options: 1 managers hold calls ($0 notional), 2 hold puts ($3.0k).
Trends to Q1 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 90 |
| Q4 2022 | 98 |
| Q1 2023 | 95 |
| Q2 2023 | 94 |
| Q3 2023 | 96 |
| Q4 2023 | 106 |
| Q1 2024 | 115 |
| Q2 2024 | 112 |
| Q3 2024 | 96 |
| Q4 2024 | 97 |
| Q1 2025 | 94 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2023 | 56 | 41 |
| Q3 2023 | 52 | 41 |
| Q4 2023 | 61 | 37 |
| Q1 2024 | 62 | 56 |
| Q2 2024 | 63 | 63 |
| Q3 2024 | 36 | 62 |
| Q4 2024 | 42 | 43 |
| Q1 2025 | 41 | 46 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2024 | $2.3k | $4.6k | 2.00 |
| Q3 2024 | $0 | $0 | — |
| Q4 2024 | $0 | $0 | — |
| Q1 2025 | $0 | $3.0k | — |
Biggest buyers
| DIMENSIONAL FUND ADVISORS LP | Added | +96.9k |
| ABC ARBITRAGE SA | Added | +94.0k |
| JANE STREET GROUP, LLC | Added | +75.8k |
| BARCLAYS PLC | Added | +60.2k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | +58.4k |
| INTECH INVESTMENT MANAGEMENT LLC | Added | +52.7k |
| VANGUARD GROUP INC | Added | +52.6k |
| Rathbones Group PLC | Added | +42.0k |
| AMERICAN CENTURY COMPANIES INC | Added | +33.9k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +32.0k |
Biggest sellers
| BlackRock, Inc. | Reduced | -217.8k |
| JPMORGAN CHASE & CO | Reduced | -159.8k |
| MORGAN STANLEY | Reduced | -136.9k |
| STATE STREET CORP | Reduced | -114.6k |
| GOLDMAN SACHS GROUP INC | Reduced | -110.1k |
| FIRST TRUST ADVISORS LP | Reduced | -96.1k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Reduced | -89.5k |
| UBS Group AG | Reduced | -81.1k |
| Russell Investments Group, Ltd. | Reduced | -80.4k |
| FRANKLIN RESOURCES INC | Sold out | -42.2k |
Biggest calls
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| SIMPLEX TRADING, LLC | New | $3.0k1.8k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
Aktiv Investment Management (Pty) Ltd
13D · may seek influence
new · filed 2025-11-10
Stated purposeThe Reporting Person holds the Shares for investment purposes Full filing |
15.7% |
Fell to 5% or below in the last year: Peresec Prime Brokers (Pty) Ltd (—, 2025-11-24)
Insider purchases and sales in Q1 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
None reported in Q1 2025.
Holders, Q1 2025
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 4.6m $9.5m | Reduced -217.8k |
| VANGUARD GROUP INC 0.00% of their portfolio | 3.8m $8.0m | Added +52.6k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 1.7m $3.5m | Added +32.0k |
| Baader Bank Aktiengesellschaft 0.34% of their portfolio | 1.6m $3.4m | Unchanged |
| STATE STREET CORP 0.00% of their portfolio | 1.5m $3.0m | Reduced -114.6k |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 1.0m $2.1m | Added +33.9k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 948.2k $2.0m | Added +96.9k |
| Hosking Partners LLP 0.07% of their portfolio | 761.3k $1.6m | Reduced -7.8k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 580.3k $1.2m | Reduced -38.3k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 508.7k $1.1m | Added +12.2k |
| FIRST TRUST ADVISORS LP 0.00% of their portfolio | 378.4k $790.8k | Reduced -96.1k |
| MORGAN STANLEY 0.00% of their portfolio | 313.5k $655.1k | Reduced -136.9k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 284.5k $594.6k | Added +13.0k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 236.6k $494.4k | Reduced -826 |
| STOREBRAND ASSET MANAGEMENT AS 0.00% of their portfolio | 235.5k $492.1k | Reduced -2.7k |
| JTC Employer Solutions Trustee Ltd 0.03% of their portfolio | 197.9k $421.0k | Unchanged |
| BARCLAYS PLC 0.00% of their portfolio | 194.2k $405.8k | Added +60.2k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 191.2k $399.6k | Reduced -89.5k |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 190.4k $397.8k | Reduced -26.6k |
| Nuveen, LLC 0.00% of their portfolio | 171.8k $359.0k | First filing |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 142.4k $297.5k | Reduced -110.1k |
| UBS Group AG 0.00% of their portfolio | 138.2k $288.9k | Reduced -81.1k |
| ABC ARBITRAGE SA 0.04% of their portfolio | 107.9k $225.5k | Added +94.0k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 100.8k $213.5k | Added +75.8k |
| INTECH INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 100.2k $209.5k | Added +52.7k |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 96.7k $202.2k | Added +18.4k |
| Swiss National Bank 0.00% of their portfolio | 96.4k $201.4k | Added +11.4k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 94.1k $196.6k | Added +3.6k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 91.5k $191.9k | Reduced -80.4k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 88.9k $185.8k | Added +58.4k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 85.7k $179.2k | Added +1.9k |
| Rathbones Group PLC 0.00% of their portfolio | 72.4k $151.3k | Added +42.0k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 66.1k $138.2k | Reduced -5.1k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 65.8k $138.0k | Added +17.1k |
| Pictet Asset Management Holding SA 0.00% of their portfolio | 61.2k $127.9k | Added +27.1k |
| CITIGROUP INC 0.00% of their portfolio | 58.8k $122.8k | Reduced -6.1k |
| Legal & General Group Plc 0.00% of their portfolio | 53.6k $111.9k | Unchanged |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 51.8k $108.3k | Reduced -159.8k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 48.1k $100.6k | Unchanged |
| SG Americas Securities, LLC 0.00% of their portfolio | 45.9k $96.0k | Added +14.2k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 41.5k $86.7k | Reduced -34.6k |
| STRS OHIO 0.00% of their portfolio | 40.0k $83.6k | Unchanged |
| Invesco Ltd. 0.00% of their portfolio | 39.7k $83.0k | Reduced -2.8k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 39.4k $82.4k | Added +1.7k |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 38.7k $80.8k | Added +16.4k |
| Corebridge Financial, Inc. 0.00% of their portfolio | 32.3k $67.6k | Reduced -479 |
| Squarepoint Ops LLC 0.00% of their portfolio | 31.8k $66.4k | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 31.5k $65.9k | Added +696 |
| JANUS HENDERSON GROUP PLC 0.00% of their portfolio | 30.2k $63.2k | Unchanged |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 29.5k $61.7k | New |
| Simplicity Wealth,LLC 0.00% of their portfolio | 26.9k $56.2k | New |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 25.5k $53.3k | Reduced -5.6k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 22.9k $47.8k | Reduced -10.4k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 22.0k $46.0k | Reduced -21.7k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio | 19.1k $39.9k | Unchanged |
| Allianz Asset Management GmbH 0.00% of their portfolio | 17.4k $36.4k | Added +6.6k |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 16.3k $34.1k | Unchanged |
| Brevan Howard Capital Management LP 0.00% of their portfolio | 15.9k $33.2k | Reduced -3.0k |
| CIBC WORLD MARKETS CORP 0.00% of their portfolio | 14.6k $30.6k | New |
| ARIZONA STATE RETIREMENT SYSTEM 0.00% of their portfolio | 14.4k $30.0k | Reduced -204 |
| ProShare Advisors LLC 0.00% of their portfolio | 14.3k $29.9k | Reduced -4.3k |
| Andina Capital Management, LLC 0.02% of their portfolio | 13.4k $28.0k | New |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 13.4k $27.9k | Added +8.1k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 12.5k $26.1k | Reduced -15.1k |
| SHELL ASSET MANAGEMENT CO 0.00% of their portfolio | 12.5k $26.0k | Reduced -494 |
| GREAT LAKES ADVISORS, LLC 0.00% of their portfolio | 11.4k $23.9k | New |
| CHICAGO TRUST Co NA 0.00% of their portfolio | 11.4k $23.9k | New |
| Jain Global LLC 0.00% of their portfolio | 11.3k $23.6k | New |
| N.E.W. Advisory Services LLC 0.00% of their portfolio | 10.0k $20.9k | Unchanged |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 6.6k $13.8k | Unchanged |
| SUMMIT SECURITIES GROUP LLC 0.01% of their portfolio | 6.3k $13.3k | New |
| KLP KAPITALFORVALTNING AS 0.00% of their portfolio | 6.3k $13.2k | Unchanged |
| MetLife Investment Management, LLC 0.00% of their portfolio | 6.2k $13.0k | Reduced -31.9k |
| SIMPLEX TRADING, LLC 0.00% of their portfolio | 5.6k $11.0k | Added +5.5k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 4.2k $8.9k | First filing |
| CWM, LLC 0.00% of their portfolio | 4.1k $9.0k | Added +2.8k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 3.4k $7.0k | Unchanged |
| MEEDER ASSET MANAGEMENT INC 0.00% of their portfolio | 2.5k $5.2k | Unchanged |
| AMALGAMATED BANK 0.00% of their portfolio | 2.2k $5.0k | Unchanged |
| NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio | 1.3k $2.7k | Reduced -149 |
| TOWARZYSTWO FUNDUSZY INWESTYCYJNYCH PZU SA 0.00% of their portfolio | 1.2k $2.5k | Unchanged |
| LAZARD ASSET MANAGEMENT LLC 0.00% of their portfolio | 837 $1.0k | Added +627 |
| FMR LLC 0.00% of their portfolio | 811 $1.7k | Reduced -866 |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 567 $1.0k | Reduced -2.0k |
| COLDSTREAM CAPITAL MANAGEMENT INC 0.00% of their portfolio | 187 $391 | New |
| CoreCap Advisors, LLC 0.00% of their portfolio | 118 $247 | New |
| Sterling Capital Management LLC 0.00% of their portfolio | 68 $142 | Unchanged |
| SBI Securities Co., Ltd. 0.00% of their portfolio | 68 $142 | Added +3 |
| Farther Finance Advisors, LLC 0.00% of their portfolio | 60 $133 | Unchanged |
| EverSource Wealth Advisors, LLC 0.00% of their portfolio | 29 $61 | New |
| Covestor Ltd 0.00% of their portfolio | 24 $0 | Unchanged |
| True Wealth Design, LLC 0.00% of their portfolio | 21 $44 | New |
| IFP Advisors, Inc 0.00% of their portfolio | 2 $4 | Unchanged |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. — of their portfolio | 0 $0 | Unchanged |