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Disclosery

MNTK MONTAUK RENEWABLES INC

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COMMON STOCK (common), issuer CIK 1826600

90 managers (91 13F filers) reported a position in MNTK shares at 2025-09-30, 20,754,552 shares in all. 13 filers opened a position and 8 filers sold out during the quarter.

Managers
90
13F filers
91
New
13
Added
25
Reduced
33
Sold out
8
Shares held by filers
20,754,552

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.4,266,765$8.58M<0.01%-109,44913F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC3,951,495$7.94M<0.01%-23,49913F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,687,618$3.39M<0.01%+9,83113F-HRTimelineGroup
Baader Bank Aktiengesellschaft1,605,000$3.23M0.27%013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
STATE STREET CORPin group STATE STREET CORP1,393,303$2.8M<0.01%+30,69013F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP976,038$1.96M<0.01%-6,23113F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC955,111$1.92M<0.01%013F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co545,009$1.1M<0.01%+20,89613F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP527,234$1.06M<0.01%+10,31713F-HRTimelineGroup
Hosking Partners LLP395,948$796K0.03%+21713F-HRTimeline
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP337,560$678K<0.01%-17,99113F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC336,400$676K<0.01%-7,81313F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp265,973$535K<0.01%-6,91713F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC247,656$498K<0.01%+90,89713F-HR/ATimelineGroup
MORGAN STANLEYin group MORGAN STANLEY237,081$477K<0.01%-16,78013F-HR/ATimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.223,277$449K<0.01%+42,79413F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP212,504$427K0.04%-31,15713F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC204,707$411K<0.01%+131,16413F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC201,735$405K<0.01%-14,34313F-HRTimelineGroup
JTC Employer Solutions Trustee Ltd197,859$400K0.03%013F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO177,855$357K<0.01%+113,08313F-HR/ATimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC165,759$333K<0.01%+73,17113F-HRTimelineGroup
Nuveen, LLCin group TIAA138,750$279K<0.01%013F-HRTimelineGroup
STOREBRAND ASSET MANAGEMENT AS131,861$265K<0.01%-86,15913F-HRTimeline
RHUMBLINE ADVISERS125,712$253K<0.01%+19,83113F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC98,323$197K<0.01%-9,02813F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.97,520$196K<0.01%+6,30013F-HRTimeline
Rathbones Group PLC92,000$185K<0.01%013F-HRTimeline
UBS Group AGin group UBS Group AG72,527$146K<0.01%-10,90313F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC56,734$114K<0.01%+22,87613F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…51,423$103K<0.01%-52313F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN49,404$99.3K<0.01%+8,01713F-HRTimelineGroup
TWO SIGMA SECURITIES, LLC47,887$96.3K0.01%+16,31913F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA39,803$81K<0.01%-29,14213F-HRTimelineGroup
STRS OHIO40,000$80.4K<0.01%013F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/33,876$69K<0.01%-38,00013F-HRTimeline
Andina Capital Management, LLC32,465$65.3K0.04%+3,83513F-HRTimeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …32,288$64.9K<0.01%013F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…32,028$64.4K<0.01%-5,70913F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/30,737$61.8K<0.01%-3,75813F-HR/ATimelineGroup
LOS ANGELES CAPITAL MANAGEMENT LLC29,205$58.7K<0.01%013F-HRTimeline
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding27,255$54.8KnewTimeline
XTX Topco Ltdin group XTX Topco Ltd25,178$50.6K<0.01%new13F-HRTimelineGroup
R Squared Ltd24,491$49.2K0.02%new13F-HRTimeline
Invesco Ltd.in group Invesco Ltd.23,001$46.2K<0.01%+2,22413F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …22,282$44.8K<0.01%-72013F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…21,845$43.9K<0.01%-90,62813F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC17,997$36.2K<0.01%-8,83813F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC16,478$33.1K<0.01%-12,40613F-HRTimelineGroup
Police & Firemen's Retirement System of…16,326$32.8K<0.01%013F-HRTimeline
Quadrature Capital Ltdin group Quadrature Capital Ltd15,707$31.7K<0.01%new13F-HRTimelineGroup
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC14,622$29.4K<0.01%-1,49013F-HRTimelineGroup
Virtu Financial LLCin group Virtu Financial LLC14,151$28K<0.01%new13F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC13,694$27.5K<0.01%-8,05413F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC13,690$27.5K<0.01%-16,09513F-HRTimelineGroup
Engineers Gate Manager LP13,626$27.4K<0.01%new13F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS13,175$26.5K<0.01%+6,32313F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC11,800$23.7K<0.01%+10413F-HRTimeline
ProShare Advisors LLC11,506$23.1K<0.01%-2,29213F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP11,000$22.1K<0.01%-5,00013F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…10,032$20.2K<0.01%-7,02113F-HRTimelineGroup
N.E.W. Advisory Services LLC10,000$20.1K<0.01%013F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC10,378$20K<0.01%new13F-HRTimelineGroup
Zurcher Kantonalbank (Zurich Cantonalba…8,835$17.8K<0.01%-56,98813F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…6,625$13.3K<0.01%013F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc6,061$12.2K<0.01%013F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…4,785$9.62K<0.01%+313F-HRTimeline
MEEDER ASSET MANAGEMENT INCin group Meeder Advisory Services, Inc.4,199$8.44K<0.01%013F-HRTimelineGroup
Sterling Capital Management LLC3,689$7.42K<0.01%+2,22413F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND3,365$6.76K<0.01%013F-HRTimeline
GAMMA Investing LLC2,578$5.18K<0.01%+1,67713F-HRTimeline
AMALGAMATED BANK2,235$4K<0.01%013F-HRTimeline
FMR LLCin group FMR LLC1,646$3.31K<0.01%+28013F-HRTimelineGroup
Private Wealth Management Group, LLC1,628$3.27K<0.01%013F-HRTimeline
CWM, LLCin group CWM, LLC1,438$3K<0.01%-1,87113F-HRTimelineGroup
TOWARZYSTWO FUNDUSZY INWESTYCYJNYCH PZU…1,200$2.41K<0.01%013F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.1,084$2.18K<0.01%new13F-HRTimelineGroup
SIMPLEX TRADING, LLC930$1K<0.01%+81613F-HRTimeline
Physician Wealth Advisors, Inc.452$909<0.01%013F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\224$450<0.01%-57,84913F-HRTimelineGroup
Arax Advisory Partners158$318<0.01%new13F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…155$311<0.01%-1913F-HRTimelineGroup
Versant Capital Management, Inc152$306<0.01%new13F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…145$291<0.01%-29013F-HRTimelineGroup
True Wealth Design, LLC92$185<0.01%+4213F-HRTimeline
Farther Finance Advisors, LLC60$121<0.01%013F-HRTimeline
Essential Partners LLC21$42<0.01%new13F-HRTimeline
SBI Securities Co., Ltd.18$36<0.01%-5013F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC90$00%new13F-HRTimelineGroupValue filed as zero, left out of ratios.
Covestor Ltd23$00%013F-HRTimelineValue filed as zero, left out of ratios.