MAMMOTH ENERGY SERVICES INC (TUSK) Institutional Ownership Changes & 13F Activity

MAMMOTH ENERGY SERVICES INC (TUSK). 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 Wexford Capital Lp, Jane Street Group, Llc, Marshall Wace, Llp, Johns Hopkins University, and State Street Corp.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
State Street CorpSell-320,058-75.9%101,864$331.06KQ2 2026Sep 22, 2026
Citadel Advisors LlcBuy+120,796+36.5%452,163$1.47MQ2 2026Sep 02, 2026
Archer Investment CorpSell-3,000-26.8%8,200$26.65KQ2 2026Aug 19, 2026
Wexford Capital LpSell-9,996,389-45.3%12,071,823$39.23MQ2 2026Aug 14, 2026
Jane Street Group, LlcBuy+483,808+2117.0%506,662$1.65MQ2 2026Aug 14, 2026
Johns Hopkins UniversityBuy+387,359—387,359$1.26MQ2 2026Aug 14, 2026
Goldman Sachs Group IncSell-168,561-75.4%54,928$178.52KQ2 2026Aug 14, 2026
Millennium Management LlcBuy+124,186—124,186$403.60KQ2 2026Aug 14, 2026
Aqr Capital Management LlcBuy+111,093+166.5%177,824$577.93KQ2 2026Aug 14, 2026
Osaic Holdings, Inc.Sell-72,269-99.8%150$487.00Q2 2026Aug 14, 2026
Point72 Asset Management, L.P.Buy+72,091—72,091$234.30KQ2 2026Aug 14, 2026
Bank Of America CorpBuy+71,457+279.2%97,046$315.40KQ2 2026Aug 14, 2026
Aster Capital Management (Difc) LtdBuy+67,570—67,570$219.60KQ2 2026Aug 14, 2026
Qube Research & Technologies LtdBuy+58,859—58,859$191.29KQ2 2026Aug 14, 2026
Two Sigma Investments, LpBuy+58,538—58,538$190.25KQ2 2026Aug 14, 2026
Xtx Topco LtdBuy+49,261—49,261$160.10KQ2 2026Aug 14, 2026
Charles Schwab Investment Management IncSell-48,122-81.8%10,739$34.90KQ2 2026Aug 14, 2026
Hsbc Holdings PlcBuy+33,706—33,706$108.03KQ2 2026Aug 14, 2026
Hrt Financial LpBuy+30,632—30,632$99.00KQ2 2026Aug 14, 2026
Wellington Management Group LlpSell-20,929-30.6%47,486$154.33KQ2 2026Aug 14, 2026
Barclays PlcBuy+19,972+357.9%25,553$83.05KQ2 2026Aug 14, 2026
Susquehanna International Group, LlpBuy+13,621+37.5%49,920$162.24KQ2 2026Aug 14, 2026
Prelude Capital Management, LlcBuy+10,800—10,800$35.10KQ2 2026Aug 14, 2026
Wells Fargo & Company/MnSell-9,169-96.8%300$975.00Q2 2026Aug 14, 2026
Royal Bank Of CanadaBuy+4,536+453600.0%4,537$14.00KQ2 2026Aug 14, 2026
Schonfeld Strategic Advisors LlcSell-1,461-8.0%16,864$54.81KQ2 2026Aug 14, 2026
Group One Trading LlcBuy+777—777$2.52KQ2 2026Aug 14, 2026
Mcguire Capital Advisors IncBuy+200—200$650.00Q2 2026Aug 14, 2026
Marshall Wace, LlpBuy+395,583—395,583$1.29MQ2 2026Aug 13, 2026
Arrowstreet Capital, Limited PartnershipBuy+290,096—290,096$942.81KQ2 2026Aug 13, 2026
Showing 30 of 105

Frequently asked questions about TUSK activity

  • Which institutional owners are buying TUSK?

    Institutional owners buying TUSK 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 TUSK activity?

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

  • Is institutional interest in TUSK increasing?

    Institutional interest in TUSK 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.