Vault-13

MONTAUK RENEWABLES INC MNTK

COM · Common Stock · CUSIP 61218C103

94 institutional holders -3 vs Q4 2024
21,653,63221.7m shares reported held*
15.2% of all shares outstanding*
$45.3mreported value*
13 new 28 added 31 reduced 15 sold out net sold ≈ $1.1m (-507.5k shares)

* 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

050100150Q3 22: 90Q4 22: 98Q1 23: 95Q2 23: 94Q3 23: 96Q4 23: 106Q1 24: 115Q2 24: 112Q3 24: 96Q4 24: 97Q1 25: 9494Q3 22Q1 23Q3 23Q1 24Q3 24Q1 25
Numbers
QuarterHolders
Q3 202290
Q4 202298
Q1 202395
Q2 202394
Q3 202396
Q4 2023106
Q1 2024115
Q2 2024112
Q3 202496
Q4 202497
Q1 202594

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
1000100Q2 23: 56 bought or addedQ2 23: 41 cut or sold outQ3 23: 52 bought or addedQ3 23: 41 cut or sold outQ3 23Q4 23: 61 bought or addedQ4 23: 37 cut or sold outQ1 24: 62 bought or addedQ1 24: 56 cut or sold outQ1 24Q2 24: 63 bought or addedQ2 24: 63 cut or sold outQ3 24: 36 bought or addedQ3 24: 62 cut or sold outQ3 24Q4 24: 42 bought or addedQ4 24: 43 cut or sold outQ1 25: 41 bought or addedQ1 25: 46 cut or sold outQ1 25
Numbers
QuarterBought or addedCut or sold out
Q2 20235641
Q3 20235241
Q4 20236137
Q1 20246256
Q2 20246363
Q3 20243662
Q4 20244243
Q1 20254146

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$2k$4k$6kQ2 24 calls: $2.3kQ2 24 puts: $4.6kQ2 24P/C 2.00Q3 24 calls: $0Q3 24 puts: $0Q3 24P/C —Q4 24 calls: $0Q4 24 puts: $0Q4 24P/C —Q1 25 calls: $0Q1 25 puts: $3.0kQ1 25P/C —
Numbers
QuarterCallsPutsP/C
Q2 2024$2.3k$4.6k2.00
Q3 2024$0$0—
Q4 2024$0$0—
Q1 2025$0$3.0k—

Biggest buyers

DIMENSIONAL FUND ADVISORS LP Added +96,894+96.9k
ABC ARBITRAGE SA Added +94,026+94.0k
JANE STREET GROUP, LLC Added +75,836+75.8k
BARCLAYS PLC Added +60,193+60.2k
SUSQUEHANNA INTERNATIONAL GROUP, LLP Added +58,378+58.4k
INTECH INVESTMENT MANAGEMENT LLC Added +52,666+52.7k
VANGUARD GROUP INC Added +52,574+52.6k
Rathbones Group PLC Added +42,000+42.0k
AMERICAN CENTURY COMPANIES INC Added +33,910+33.9k
GEODE CAPITAL MANAGEMENT, LLC Added +31,961+32.0k

Biggest sellers

BlackRock, Inc. Reduced -217,780-217.8k
JPMORGAN CHASE & CO Reduced -159,806-159.8k
MORGAN STANLEY Reduced -136,854-136.9k
STATE STREET CORP Reduced -114,643-114.6k
GOLDMAN SACHS GROUP INC Reduced -110,100-110.1k
FIRST TRUST ADVISORS LP Reduced -96,064-96.1k
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Reduced -89,457-89.5k
UBS Group AG Reduced -81,127-81.1k
Russell Investments Group, Ltd. Reduced -80,426-80.4k
FRANKLIN RESOURCES INC Sold out -42,197-42.2k

Biggest calls

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.

HolderStakeChangeShares Last filed
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% new 22.3m≈ $34.8m 2025-11-10

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

#ManagerLocationShares Value% of their portfolioChangeShares change
1 BlackRock, Inc. 0.00% of their portfolio New York, NY 4,552,2754.6m $9.5m $9.5m 0.00% Reduced -217.8k -217,780
2 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 3,838,2993.8m $8.0m $8.0m 0.00% Added +52.6k +52,574
3 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 1,677,8851.7m $3.5m $3.5m 0.00% Added +32.0k +31,961
4 Baader Bank Aktiengesellschaft 0.34% of their portfolio Unterschleissheim, 2M 1,605,0001.6m $3.4m $3.4m 0.34% Unchanged
5 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 1,452,3601.5m $3.0m $3.0m 0.00% Reduced -114.6k -114,643
6 AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio KANSAS CITY, MO 1,025,9991.0m $2.1m $2.1m 0.00% Added +33.9k +33,910
7 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 948,239948.2k $2.0m $2.0m 0.00% Added +96.9k +96,894
8 Hosking Partners LLP 0.07% of their portfolio LONDON, X0 761,336761.3k $1.6m $1.6m 0.07% Reduced -7.8k -7,776
9 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 580,311580.3k $1.2m $1.2m 0.00% Reduced -38.3k -38,318
10 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 508,654508.7k $1.1m $1.1m 0.00% Added +12.2k +12,248
11 FIRST TRUST ADVISORS LP 0.00% of their portfolio Wheaton, IL 378,363378.4k $790.8k $790.8k 0.00% Reduced -96.1k -96,064
12 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 313,455313.5k $655.1k $655.1k 0.00% Reduced -136.9k -136,854
13 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 284,500284.5k $594.6k $594.6k 0.00% Added +13.0k +13,000
14 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 236,568236.6k $494.4k $494.4k 0.00% Reduced -826 -826
15 STOREBRAND ASSET MANAGEMENT AS 0.00% of their portfolio LYSAKER, Q8 235,478235.5k $492.1k $492.1k 0.00% Reduced -2.7k -2,744
16 JTC Employer Solutions Trustee Ltd 0.03% of their portfolio ST HELIER, Y9 197,859197.9k $421.0k $421.0k 0.03% Unchanged
17 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 194,156194.2k $405.8k $405.8k 0.00% Added +60.2k +60,193
18 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 191,182191.2k $399.6k $399.6k 0.00% Reduced -89.5k -89,457
19 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 190,352190.4k $397.8k $397.8k 0.00% Reduced -26.6k -26,599
20 Nuveen, LLC 0.00% of their portfolio CHARLOTTE, NC 171,759171.8k $359.0k $359.0k 0.00% First filing
21 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 142,359142.4k $297.5k $297.5k 0.00% Reduced -110.1k -110,100
22 UBS Group AG 0.00% of their portfolio ZURICH, V8 138,243138.2k $288.9k $288.9k 0.00% Reduced -81.1k -81,127
23 ABC ARBITRAGE SA 0.04% of their portfolio PARIS, I0 107,912107.9k $225.5k $225.5k 0.04% Added +94.0k +94,026
24 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 100,834100.8k $213.5k $213.5k 0.00% Added +75.8k +75,836
25 INTECH INVESTMENT MANAGEMENT LLC 0.00% of their portfolio WEST PALM BEACH, FL 100,233100.2k $209.5k $209.5k 0.00% Added +52.7k +52,666
26 Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio ZURICH, V8 96,73896.7k $202.2k $202.2k 0.00% Added +18.4k +18,439
27 Swiss National Bank 0.00% of their portfolio ZURICH, V8 96,36196.4k $201.4k $201.4k 0.00% Added +11.4k +11,384
28 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 94,06194.1k $196.6k $196.6k 0.00% Added +3.6k +3,622
29 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 91,49391.5k $191.9k $191.9k 0.00% Reduced -80.4k -80,426
30 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 88,90788.9k $185.8k $185.8k 0.00% Added +58.4k +58,378
31 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 85,72085.7k $179.2k $179.2k 0.00% Added +1.9k +1,900
32 Rathbones Group PLC 0.00% of their portfolio Liverpool, X0 72,40072.4k $151.3k $151.3k 0.00% Added +42.0k +42,000
33 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 66,12566.1k $138.2k $138.2k 0.00% Reduced -5.1k -5,142
34 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 65,83165.8k $138.0k $138.0k 0.00% Added +17.1k +17,119
35 Pictet Asset Management Holding SA 0.00% of their portfolio CAROUGE, V8 61,20461.2k $127.9k $127.9k 0.00% Added +27.1k +27,076
36 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 58,75858.8k $122.8k $122.8k 0.00% Reduced -6.1k -6,140
37 Legal & General Group Plc 0.00% of their portfolio London, X0 53,55553.6k $111.9k $111.9k 0.00% Unchanged
38 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 51,79851.8k $108.3k $108.3k 0.00% Reduced -159.8k -159,806
39 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 48,11348.1k $100.6k $100.6k 0.00% Unchanged
40 SG Americas Securities, LLC 0.00% of their portfolio NEW YORK, NY 45,86645.9k $96.0k $96.0k 0.00% Added +14.2k +14,151
41 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 41,50341.5k $86.7k $86.7k 0.00% Reduced -34.6k -34,585
42 STRS OHIO 0.00% of their portfolio COLUMBUS, OH 40,00040.0k $83.6k $83.6k 0.00% Unchanged
43 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 39,72539.7k $83.0k $83.0k 0.00% Reduced -2.8k -2,808
44 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio CAUSEWAY BAY, K3 39,41939.4k $82.4k $82.4k 0.00% Added +1.7k +1,653
45 VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio ATLANTA, GA 38,68238.7k $80.8k $80.8k 0.00% Added +16.4k +16,357
46 Corebridge Financial, Inc. 0.00% of their portfolio HOUSTON, TX 32,33532.3k $67.6k $67.6k 0.00% Reduced -479 -479
47 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 31,75631.8k $66.4k $66.4k 0.00% New
48 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 31,53631.5k $65.9k $65.9k 0.00% Added +696 +696
49 JANUS HENDERSON GROUP PLC 0.00% of their portfolio LONDON, X0 30,18330.2k $63.2k $63.2k 0.00% Unchanged
50 AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio Greenwich, CT 29,50029.5k $61.7k $61.7k 0.00% New
51 Simplicity Wealth,LLC 0.00% of their portfolio SUMMIT, NJ 26,89526.9k $56.2k $56.2k 0.00% New
52 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 25,51825.5k $53.3k $53.3k 0.00% Reduced -5.6k -5,641
53 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 22,89322.9k $47.8k $47.8k 0.00% Reduced -10.4k -10,365
54 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 21,98722.0k $46.0k $46.0k 0.00% Reduced -21.7k -21,746
55 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio TALLAHASSEE, FL 19,08019.1k $39.9k $39.9k 0.00% Unchanged
56 Allianz Asset Management GmbH 0.00% of their portfolio MUNICH, 2M 17,40017.4k $36.4k $36.4k 0.00% Added +6.6k +6,600
57 Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio TRENTON, NJ 16,32616.3k $34.1k $34.1k 0.00% Unchanged
58 Brevan Howard Capital Management LP 0.00% of their portfolio ST. HELIER, Y9 15,86315.9k $33.2k $33.2k 0.00% Reduced -3.0k -3,010
59 CIBC WORLD MARKETS CORP 0.00% of their portfolio NEW YORK, NY 14,64514.6k $30.6k $30.6k 0.00% New
60 ARIZONA STATE RETIREMENT SYSTEM 0.00% of their portfolio PHOENIX, AZ 14,35314.4k $30.0k $30.0k 0.00% Reduced -204 -204
61 ProShare Advisors LLC 0.00% of their portfolio BETHESDA, MD 14,28814.3k $29.9k $29.9k 0.00% Reduced -4.3k -4,300
62 Andina Capital Management, LLC 0.02% of their portfolio LOGAN, UT 13,40213.4k $28.0k $28.0k 0.02% New
63 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 13,36413.4k $27.9k $27.9k 0.00% Added +8.1k +8,064
64 STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio MADISON, WI 12,48912.5k $26.1k $26.1k 0.00% Reduced -15.1k -15,055
65 SHELL ASSET MANAGEMENT CO 0.00% of their portfolio THE HAGUE, P7 12,47912.5k $26.0k $26.0k 0.00% Reduced -494 -494
66 GREAT LAKES ADVISORS, LLC 0.00% of their portfolio CHICAGO, IL 11,44511.4k $23.9k $23.9k 0.00% New
67 CHICAGO TRUST Co NA 0.00% of their portfolio GRAYSLAKE, IL 11,44511.4k $23.9k $23.9k 0.00% New
68 Jain Global LLC 0.00% of their portfolio NEW YORK, NY 11,30011.3k $23.6k $23.6k 0.00% New
69 N.E.W. Advisory Services LLC 0.00% of their portfolio DE PERE, WI 10,00010.0k $20.9k $20.9k 0.00% Unchanged
70 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 6,6256.6k $13.8k $13.8k 0.00% Unchanged
71 SUMMIT SECURITIES GROUP LLC 0.01% of their portfolio NEW YORK, NY 6,3506.3k $13.3k $13.3k 0.01% New
72 KLP KAPITALFORVALTNING AS 0.00% of their portfolio OSLO, Q8 6,3006.3k $13.2k $13.2k 0.00% Unchanged
73 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 6,2266.2k $13.0k $13.0k 0.00% Reduced -31.9k -31,932
74 SIMPLEX TRADING, LLC 0.00% of their portfolio CHICAGO, IL 5,6385.6k $11.0k $11.0k 0.00% Added +5.5k +5,519
75 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 4,2404.2k $8.9k $8.9k 0.00% First filing
76 CWM, LLC 0.00% of their portfolio OMAHA, NE 4,0834.1k $9.0k $9.0k 0.00% Added +2.8k +2,771
77 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 3,3653.4k $7.0k $7.0k 0.00% Unchanged
78 MEEDER ASSET MANAGEMENT INC 0.00% of their portfolio DUBLIN, OH 2,4842.5k $5.2k $5.2k 0.00% Unchanged
79 AMALGAMATED BANK 0.00% of their portfolio NEW YORK, NY 2,2352.2k $5.0k $5.0k 0.00% Unchanged
80 NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio ST. LOUIS, MO 1,3001.3k $2.7k $2.7k 0.00% Reduced -149 -149
81 TOWARZYSTWO FUNDUSZY INWESTYCYJNYCH PZU SA 0.00% of their portfolio WARSAW, R9 1,2001.2k $2.5k $2.5k 0.00% Unchanged
82 LAZARD ASSET MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 837837 $1.0k $1.0k 0.00% Added +627 +627
83 FMR LLC 0.00% of their portfolio BOSTON, MA 811811 $1.7k $1.7k 0.00% Reduced -866 -866
84 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 567567 $1.0k $1.0k 0.00% Reduced -2.0k -1,998
85 COLDSTREAM CAPITAL MANAGEMENT INC 0.00% of their portfolio BELLEVUE, WA 187187 $391 $391 0.00% New
86 CoreCap Advisors, LLC 0.00% of their portfolio SOUTHFIELD, MI 118118 $247 $247 0.00% New
87 Sterling Capital Management LLC 0.00% of their portfolio CHARLOTTE, NC 6868 $142 $142 0.00% Unchanged
88 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 6868 $142 $142 0.00% Added +3 +3
89 Farther Finance Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 6060 $133 $133 0.00% Unchanged
90 EverSource Wealth Advisors, LLC 0.00% of their portfolio BIRMINGHAM, AL 2929 $61 $61 0.00% New
91 Covestor Ltd 0.00% of their portfolio LONDON, X0 2424 $0 $0 0.00% Unchanged
92 True Wealth Design, LLC 0.00% of their portfolio AKRON, OH 2121 $44 $44 0.00% New
93 IFP Advisors, Inc 0.00% of their portfolio TAMPA, FL 22 $4 $4 0.00% Unchanged
94 CONCOURSE FINANCIAL GROUP SECURITIES, INC. — of their portfolio BIRMINGHAM, AL 00 $0 $0 — Unchanged