MONTAUK RENEWABLES INC

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MNTK·61218C103·US·Common Stock·Basic Materials - Specialty Chemicals-Activist

MNTK (MONTAUK RENEWABLES INC) is held by 65 institutional investors as of Q2 2026. Largest holders: BlackRock, Inc. ($7.3M), VANGUARD CAPITAL MANAGEMENT LLC ($4.2M), GEODE CAPITAL MANAGEMENT, LLC ($2.9M). Net institutional sentiment: Mixed.

65

Holders

(4 Elite)

$28.8M

Total Value

57% (69)

Consensus

39 buying - 30 selling

13F: Jun 30, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)34

Insider (Form 4)38

Activist (13D/13G)48

Congressional (STOCK Act)42

Holder Quality

17

★★★★★

Elite

13

★★★★

Strong

25

★★★

Solid

63

★★

Below

78

★

Weak

Held by 65 funds

4 elite

Who's Trading

Source dates: Price Aug 28, 2026 · Insiders May 13, 2026 · Activists Nov 24, 2025 · Congress none

InsiderCACopelyn John ABuy $25KMay 11, 2026

ActivistPPPeresec Prime Brokers (Pty) Ltd$64KNov 24, 2025

ActivistAIAktiv Investment Management (Pty) Ltd15.7%Nov 10, 2025

View all insider tradesView all activist filings

Top Holders

Top Holders (65)History

AllNewIncreasedHeldDecreasedExited

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Increased	4.7M(+11.6%)	$7.3M	0.0%	-52.80%	31
VAVANGUARD CAPITAL MANAGEMENT LLC	Increased	2.7M(+0.7%)	$4.2M	0.0%	+13.38%	27
GEODE CAPITAL MANAGEMENT, LLC	Increased	1.9M(+6.8%)	$2.9M	0.0%	-79.82%	28
STATE STREET CORP	Increased	1.4M(+0.3%)	$2.1M	0.0%	-79.20%	26
BARCLAYS PLC	Decreased	953,510(-8.2%)	$1.5M	0.0%	-9.21%	0
AMERICAN CENTURY COMPANIES INC	Decreased	950,442(-0.4%)	$1.5M	0.0%	-62.88%	0
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Increased	539,334(+3.6%)	$841,361	0.0%	-81.55%	26
NORTHERN TRUST CORP	Increased	536,057(+6.1%)	$836,249	0.0%	-79.31%	26
VPVANGUARD PORTFOLIO MANAGEMENT LLC	Increased	469,053(+20.6%)	$731,723	0.0%	+13.50%	20
DIMENSIONAL FUND ADVISORS LP	Decreased	448,818(-39.1%)	$700,155	0.0%	-71.53%	0
VFVANGUARD FIDUCIARY TRUST CO	Increased	438,777(+1.5%)	$684,492	0.0%	+13.38%	25
FIRST TRUST ADVISORS LP	Increased	381,889(+22.4%)	$595,746	0.0%	-86.46%	29
GOLDMAN SACHS GROUP INC	Increased	377,277(+13.9%)	$588,551	0.0%	-21.87%	28
RENAISSANCE TECHNOLOGIES LLC	Increased	364,800(+2.9%)	$569,088	0.0%	-62.79%	25
JPMORGAN CHASE & CO	Increased	270,982(+67.0%)	$422,732	0.0%	-12.22%	24
AQR CAPITAL MANAGEMENT LLC	Increased	238,152(+521.0%)	$371,517	0.0%	+11.71%	38
Bank of New York Mellon Corp	Unchanged	195,907	$305,615	0.0%	-81.47%	0
MORGAN STANLEY	Decreased	167,182(-36.0%)	$260,805	0.0%	-60.90%	0
Nuveen, LLC	Increased	162,044(+16.1%)	$252,788	0.0%	-11.61%	27
ALLIANCEBERNSTEIN L.P.	Increased	142,138(+45.8%)	$163,459	0.0%	-70.61%	31

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MNTKMONTAUK RENEWABLES INC

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High Conviction Moves-Smart Money Convergence-Fund Consensus-Double-Down Detection

Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer