MONTAUK RENEWABLES INC (MNTK) Institutional Ownership Changes & 13F Activity

MONTAUK RENEWABLES INC (MNTK). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Aqr Capital Management Llc, Millennium Management Llc, Marshall Wace, Llp, Morgan Stanley, and Barclays Plc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Citadel Advisors LlcBuy+58,82658,826$91.77KQ2 2026Sep 02, 2026
California State Teachers Retirement SystemSell-2,698-74.1%943$1.47KQ2 2026Aug 24, 2026
Aqr Capital Management LlcBuy+199,801+521.0%238,152$371.52KQ2 2026Aug 14, 2026
Millennium Management LlcSell-163,399-79.0%43,455$67.79KQ2 2026Aug 14, 2026
Barclays PlcSell-85,407-8.2%953,510$1.49MQ2 2026Aug 14, 2026
Goldman Sachs Group IncBuy+46,088+13.9%377,277$588.55KQ2 2026Aug 14, 2026
Alliancebernstein L.P.Buy+44,618+45.8%142,138$163.46KQ2 2026Aug 14, 2026
Invesco Ltd.Buy+35,87935,879$55.97KQ2 2026Aug 14, 2026
Wells Fargo & Company/MnBuy+33,296+132.1%58,510$91.28KQ2 2026Aug 14, 2026
Squarepoint Ops LlcSell-23,750-66.2%12,143$18.94KQ2 2026Aug 14, 2026
Charles Schwab Investment Management IncBuy+18,723+3.6%539,334$841.36KQ2 2026Aug 14, 2026
D. E. Shaw & Co., Inc.Sell-16,759-14.2%101,497$158.34KQ2 2026Aug 14, 2026
Bank Of America CorpSell-15,632-25.7%45,075$70.32KQ2 2026Aug 14, 2026
Royal Bank Of CanadaBuy+11,211+372.7%14,219$22.00KQ2 2026Aug 14, 2026
Cerity Partners LlcBuy+10,44210,442$16.29KQ2 2026Aug 14, 2026
Xtx Topco LtdSell-4,068-28.7%10,105$15.76KQ2 2026Aug 14, 2026
Engineers Gate Manager LpSell-2,061-11.1%16,567$25.84KQ2 2026Aug 14, 2026
Jones Financial Companies LllpBuy+1,741+18.8%11,000$16.61KQ2 2026Aug 14, 2026
Mirae Asset Global Etfs Holdings Ltd.Sell-1,349-4.1%31,543$49.21KQ2 2026Aug 14, 2026
Jpl Wealth Management, LlcBuy+99$15.00Q2 2026Aug 14, 2026
Marshall Wace, LlpSell-124,110-60.6%80,526$125.62KQ2 2026Aug 13, 2026
Morgan StanleySell-94,216-36.0%167,182$260.81KQ2 2026Aug 13, 2026
Vanguard Portfolio Management LlcBuy+80,134+20.6%469,053$731.72KQ2 2026Aug 13, 2026
Northern Trust CorpBuy+30,683+6.1%536,057$836.25KQ2 2026Aug 13, 2026
Ubs Group AgBuy+26,763+63.9%68,630$107.06KQ2 2026Aug 13, 2026
Acadian Asset Management LlcBuy+25,654+45.7%81,760$126.00KQ2 2026Aug 13, 2026
Vanguard Capital Management LlcBuy+18,186+0.7%2,706,900$4.22MQ2 2026Aug 13, 2026
Centiva Capital, LpBuy+14,39114,391$22.45KQ2 2026Aug 13, 2026
Mariner, LlcBuy+13,58513,585$21.19KQ2 2026Aug 13, 2026
Renaissance Technologies LLCBuy+10,200+2.9%364,800$569.09KQ2 2026Aug 13, 2026
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Frequently asked questions about MNTK activity

  • Which institutional owners are buying MNTK?

    Institutional owners buying MNTK include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in MNTK activity?

    "Buy" means an investor increased their reported position in MNTK compared to the prior reporting period. This reflects growing exposure to MONTAUK RENEWABLES INC (MNTK) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in MNTK increasing?

    Institutional interest in MNTK can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.