Montauk Renewables, Inc. (MNTK) Institutional Ownership

Institutions by Trading Activity

153,300,000Shares Outstanding

0Shares held by institutions

$0Value of institutional holdings

0.00%Institutional ownership %

125.24%Shares Changed QoQ

2No. of institutional investors

According to SEC filings for the period ending December 2025, Montauk Renewables, Inc. (NASDAQ:MNTK) is held by 2 institutional firms.

The collective stake of institutional investors in Montauk Renewables moved to 0.0% in December 2025, a shift down from the 13.4% reported for September 2025.
On a quarter-over-quarter basis, institutional holdings shifted by 125.24%, with a year-over-year a decrease of 97.92% in the count of filers.
Of these 2 institutional investors, 1 increased their holdings in Montauk Renewables, while 1 of them reduced positions, and 0 investors maintained their exposure.
The aggregate institutional position in Montauk Renewables now stands at 6.01K shares as of December 2025, after investors increased their holdings (up by 3.34K shares quarter on quarter which is down 21.92Mn shares year over year).
The top institutional stake in Montauk Renewables as of December 31, 2025 belongs to GAMMA Investing LLC, which owns 6.00K shares, or 0.00% of the company.
Among the most significant buyers of Montauk Renewables during December 2025 were GAMMA Investing LLC (3.42K).
Leading sellers of Montauk Renewables stock in December 2025 included True Wealth Design, LLC (80).
The top 2 institutional holders of Montauk Renewables for the quarter ending December 2025 included GAMMA Investing LLC (6.00K), True Wealth Design, LLC (12).

0 Total Shares Held

Rows:

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	30 Sep, 2025	4,266,765	-109,449	-2.50%	$8,576,197.00
VANGUARD GROUP INC	30 Sep, 2025	3,951,495	-23,499	-0.59%	$7,942,505.00
GEODE CAPITAL MANAGEMENT, LLC	30 Sep, 2025	1,687,618	9,831	0.59%	$3,392,888.00
Baader Bank Aktiengesellschaft	30 Sep, 2025	1,605,000	0	0.00%	$3,226,050.00
STATE STREET CORP	30 Sep, 2025	1,393,303	30,690	2.25%	$2,800,539.00
DIMENSIONAL FUND ADVISORS LP	30 Sep, 2025	976,038	-6,231	-0.63%	$1,962,006.00
AMERICAN CENTURY COMPANIES INC	30 Sep, 2025	955,111	0	0.00%	$1,919,773.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	30 Sep, 2025	545,009	20,896	3.99%	$1,095,468.00
NORTHERN TRUST CORP	30 Sep, 2025	527,234	10,317	2.00%	$1,059,740.00
Hosking Partners LLP	30 Sep, 2025	395,948	217	0.05%	$795,855.00
FIRST TRUST ADVISORS LP	30 Sep, 2025	337,560	-17,991	-5.06%	$678,495.00
RENAISSANCE TECHNOLOGIES LLC	30 Sep, 2025	336,400	-7,813	-2.27%	$676,164.00
Bank of New York Mellon Corp	30 Sep, 2025	265,973	-6,917	-2.53%	$534,606.00
BARCLAYS PLC	30 Sep, 2025	247,656	90,897	57.99%	$497,788.00
MORGAN STANLEY	30 Sep, 2025	237,081	-16,780	-6.61%	$476,533.00
D. E. Shaw & Co., Inc.	30 Sep, 2025	223,277	42,794	23.71%	$448,787.00
GSA CAPITAL PARTNERS LLP	30 Sep, 2025	212,504	-31,157	-12.79%	$427.00
CITADEL ADVISORS LLC	30 Sep, 2025	204,707	204,707	0.00%	$411,462.00
MILLENNIUM MANAGEMENT LLC	30 Sep, 2025	201,735	-14,343	-6.64%	$405,487.00
JTC Employer Solutions Trustee Ltd	30 Sep, 2025	197,859	0	0.00%	$400.00

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