Mammoth Energy Services (TUSK) Institutional Ownership $2.29 -0.14 (-5.76%) Closing price 04:00 PM EasternExtended Trading$2.32 +0.02 (+1.09%) As of 06:26 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Ownership Stock AnalysisChartCompetitorsEarningsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for Mammoth Energy Services (NASDAQ:TUSK)CurrentInstitutional OwnershipPercentage79.67%Number ofInstitutional Buyers(last 12 months)25TotalInstitutional Inflows(last 12 months)$5.32MNumber ofInstitutional Sellers(last 12 months)11TotalInstitutional Outflows(last 12 months)$1.75M Get TUSK Insider Trade Alerts Want to know when executives and insiders are buying or selling Mammoth Energy Services stock? 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Email Address Skip Chart & View Institutional Buying and Selling Data TUSK Institutional Buying and Selling by Quarter Mammoth Energy Services Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails8/13/2025Marshall Wace LLP57,436$161K0.0%N/A0.119% 8/12/2025 XTX Topco Ltd36,662$103K0.0%N/A0.076% 8/12/2025 JPMorgan Chase & Co.185,761$520K0.0%+726.7%0.386% 8/8/2025 Intech Investment Management LLC12,080$34K0.0%-32.4%0.025% 8/8/2025 Police & Firemen s Retirement System of New Jersey9,637$27K0.0%N/A0.020% 8/8/2025 Geode Capital Management LLC580,659$1.63M0.0%+6.5%1.206% 7/10/2025 Wealth Enhancement Advisory Services LLC12,121$34K0.0%N/A0.025% 6/27/2025Goldman Sachs Group Inc.66,588$136K0.0%-25.6%0.138% 5/16/2025 Empowered Funds LLC159,685$326K0.0%+8.9%0.332% 5/16/2025Goldman Sachs Group Inc.66,588$136K0.0%-25.6%0.138% Get the Latest News and Ratings for TUSK and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Mammoth Energy Services and its competitors with MarketBeat's FREE daily newsletter. 5/16/2025Adage Capital Partners GP L.L.C.4,150,000$8.47M0.0%+1.2%8.623% 5/14/2025 Valueworks LLC2,808,860$5.73M2.2%-0.5%5.836% 5/14/2025Wellington Management Group LLP61,799$126K0.0%+24.7%0.128% 5/12/2025 Nuveen LLC36,843$75K0.0%N/A0.077% 5/6/2025 Royce & Associates LP1,293,637$2.64M0.0%-10.8%2.688% 4/9/2025 NBC Securities Inc.56,940$116K0.0%+101,578.6%0.118% 4/1/2025 Penbrook Management LLC14,000$29K0.0%-36.9%0.029% 2/17/2025 Valueworks LLC2,823,185$8.47M2.8%-10.0%5.866% 2/17/2025Occudo Quantitative Strategies LP13,749$41K0.0%N/A0.029% 2/17/2025Bridgeway Capital Management LLC460,274$1.38M0.0%+14.1%0.956% 2/17/2025Bank of America Corp DE22,882$69K0.0%+45.8%0.048% 2/14/2025PDT Partners LLC15,450$46K0.0%N/A0.032% 2/14/2025Northern Trust Corp206,039$618K0.0%+2.1%0.428% 2/14/2025Adage Capital Partners GP L.L.C.4,100,000$12.30M0.0%+1.1%8.519% 2/14/2025 Dimensional Fund Advisors LP991,223$2.97M0.0%+11.0%2.059% 2/13/2025Marshall Wace LLP14,163$42K0.0%N/A0.029% 2/13/2025Barclays PLC61,549$185K0.0%+7.8%0.128% 2/13/2025Invesco Ltd.10,122$30K0.0%N/A0.021% 2/12/2025Rangeley Capital LLC432,338$1.30M1.2%N/A0.898% 2/12/2025 Geode Capital Management LLC537,376$1.61M0.0%+1.6%1.117% 2/12/2025 JPMorgan Chase & Co.63,079$189K0.0%+465.2%0.131% 2/11/2025 LPL Financial LLC10,057$30K0.0%-35.4%0.021% 2/10/2025 Royce & Associates LP1,449,922$4.35M0.0%+7.3%3.013% 2/6/2025 Charles Schwab Investment Management Inc.70,674$212K0.0%+11.1%0.147% 2/4/2025 Bank of New York Mellon Corp121,993$366K0.0%-18.2%0.253% 1/28/2025 Empowered Funds LLC146,574$440K0.0%+76.3%0.305% 1/23/2025 Penbrook Management LLC22,200$67K0.0%-32.1%0.046% 12/26/2024 JPMorgan Chase & Co.11,160$46K0.0%-54.1%0.023% 11/19/2024Barclays PLC57,081$233K0.0%+65.1%0.119% 11/16/2024 Geode Capital Management LLC528,850$2.16M0.0%+1.9%1.099% Trump’s national nightmare is here (Ad)Porter Stansberry and Jeff Brown say a new U.S. national emergency is already underway — and it could trigger the biggest forced rotation of capital since World War II. They reveal why Trump is mobilizing America’s tech giants… and name the two stocks most likely to soar as trillions shift behind the scenes.Watch the National Emergency broadcast here11/15/2024Barclays PLC57,081$233K0.0%+65.1%0.119% 11/15/2024 XTX Topco Ltd12,964$53K0.0%N/A0.027% 11/15/2024Jane Street Group LLC18,544$76K0.0%-50.0%0.039% 11/15/2024Wellington Management Group LLP48,071$197K0.0%N/A0.100% 11/15/2024Wexford Capital LP22,068,212$90.26M21.6%0.0%45.851% 11/15/2024State Street Corp403,688$1.65M0.0%+1.4%0.839% 11/13/2024FMR LLC10,967$45K0.0%+32.7%0.023% 11/6/2024 Archer Investment Corp12,400$51K0.0%-42.1%0.026% 11/6/2024 Empowered Funds LLC83,157$340K0.0%+5.3%0.173% 11/6/2024 Royce & Associates LP1,351,224$5.53M0.1%+15.2%2.807% 10/3/2024 SG Americas Securities LLC10,345$42K0.0%N/A0.021% 8/9/2024Renaissance Technologies LLC130,672$429K0.0%-2.7%0.271% 8/9/2024 Dimensional Fund Advisors LP806,280$2.65M0.0%+14.0%1.675% 8/6/2024 Acadian Asset Management LLC54,357$177K0.0%-73.9%0.113% 7/26/2024 Bank of New York Mellon Corp166,591$546K0.0%+6.9%0.346% 7/24/2024 Penbrook Management LLC61,900$203K0.1%-4.6%0.129% 5/13/2024 O Shaughnessy Asset Management LLC19,247$70K0.0%-31.8%0.040% 5/10/2024 Acadian Asset Management LLC207,961$756K0.0%-14.8%0.433% 5/10/2024 Vanguard Group Inc.723,772$2.64M0.0%+2.5%1.508% 5/7/2024 Empowered Funds LLC73,423$267K0.0%+8.0%0.153% 5/1/2024BNP Paribas Financial Markets11,265$41K0.0%+55.8%0.023% 4/18/2024 Penbrook Management LLC64,900$236K0.1%-15.6%0.135% 4/5/2024 NBC Securities Inc.55,140$211K0.0%-6.1%0.115% 2/14/2024CastleKnight Management LP167,433$747K0.0%-10.7%0.349% 1/31/2024 Archer Investment Corp21,400$95K0.0%+25.1%0.045% 1/16/2024 Penbrook Management LLC76,900$343K0.2%-4.9%0.160% 1/12/2024 SG Americas Securities LLC12,699$57K0.0%+26.5%0.026% 11/15/2023Adage Capital Partners GP L.L.C.3,700,000$17.17M0.0%+12.1%7.718% 11/14/2023 O Shaughnessy Asset Management LLC57,096$265K0.0%+56.0%0.119% 11/13/2023 Connor Clark & Lunn Investment Management Ltd.93,214$433K0.0%-3.8%0.194% 11/13/2023 Acadian Asset Management LLC437,601$2.03M0.0%-12.5%0.913% 11/13/2023 Valueworks LLC3,374,263$15.62M5.7%-0.3%7.039% 11/13/2023 Stokes Family Office LLC12,390$57K0.0%N/A0.026% 11/13/2023WINTON GROUP Ltd35,816$166K0.0%+250.0%0.075% 11/8/2023 Boston Partners35,093$163K0.0%-43.6%0.073% 11/7/2023New York State Common Retirement Fund10,680$50K0.0%-48.9%0.022% 11/4/2023 NBC Securities Inc.58,740$272K0.0%N/A0.123% 10/27/2023 Allspring Global Investments Holdings LLC8,089$38K0.0%N/A0.017% 10/13/2023 SG Americas Securities LLC10,036$47K0.0%N/A0.021% 9/21/2023Barclays PLC29,674$143K0.0%-42.4%0.062% 8/15/2023 Kanen Wealth Management LLC1,767,074$8.54M5.7%-0.5%3.704% 8/14/2023Wexford Capital LP22,566,238$109.00M21.6%+0.4%47.299% 8/14/2023 X Square Capital LLC215,092$1.04M0.7%-46.9%0.451% 8/14/2023Prelude Capital Management LLC10,403$50K0.0%N/A0.022% 8/10/2023Cruiser Capital Advisors LLC17,125$83K0.1%N/A0.036% 8/10/2023 Boston Partners62,186$300K0.0%+53.8%0.130% 8/7/2023 Acadian Asset Management LLC500,157$2.42M0.0%-25.1%1.048% 8/4/2023 American International Group Inc.11,214$54K0.0%N/A0.024% 7/27/2023EA Series Trust25,616$124K0.0%N/A0.054% 7/17/2023 Ritholtz Wealth Management10,936$53K0.0%-36.0%0.023% Trump’s national nightmare is here (Ad)Porter Stansberry and Jeff Brown say a new U.S. national emergency is already underway — and it could trigger the biggest forced rotation of capital since World War II. They reveal why Trump is mobilizing America’s tech giants… and name the two stocks most likely to soar as trillions shift behind the scenes.Watch the National Emergency broadcast here5/15/2023Wexford Capital LP22,474,914$94.84M19.6%0.0%47.104% 5/15/2023 Valueworks LLC3,400,768$14.35M5.5%-3.2%7.128% 5/12/2023Long Focus Capital Management LLC29,470$124K0.0%-48.9%0.062% 5/11/2023 Acadian Asset Management LLC668,056$2.82M0.0%+140.7%1.400% 5/11/2023 X Square Capital LLC405,092$1.71M1.0%+3.8%0.849% 5/10/2023 Connor Clark & Lunn Investment Management Ltd.95,825$404K0.0%+36.8%0.201% 5/9/2023 Archer Investment Corp17,000$72K0.0%+54.5%0.036% 5/9/2023 Boston Partners40,428$171K0.0%-10.3%0.085% 5/9/2023Russell Investments Group Ltd.147,488$622K0.0%-10.8%0.309% 5/3/2023Jump Financial LLC67,937$287K0.0%+64.1%0.142% (Data available from 1/1/2016 forward) TUSK Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of TUSK shares? During the previous two years, 49 institutional investors and hedge funds held shares of Mammoth Energy Services. The most heavily invested institutionals were Wexford Capital LP ($90.26M), Kanen Wealth Management LLC ($8.54M), Adage Capital Partners GP L.L.C. ($8.47M), Valueworks LLC ($5.73M), Dimensional Fund Advisors LP ($2.97M), Royce & Associates LP ($2.64M), and Vanguard Group Inc. ($2.64M).Learn more on Mammoth Energy Services' institutional investors. What percentage of Mammoth Energy Services' stock is owned by institutional investors? 79.67% of Mammoth Energy Services' stock is owned by institutional investors. Learn more on TUSK's institutional investor holdings. Which institutional investors have been buying Mammoth Energy Services' stock? Of the 35 institutional investors that purchased Mammoth Energy Services' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Adage Capital Partners GP L.L.C. ($496.28K), Rangeley Capital LLC ($432.34K), Royce & Associates LP ($276.94K), JPMorgan Chase & Co. ($215.21K), Dimensional Fund Advisors LP ($197.39K), NBC Securities Inc. ($115.62K), and Wexford Capital LP ($91.32K). How much institutional buying is happening at Mammoth Energy Services? Institutional investors have bought a total of 1,733,325 shares in the last 24 months. This purchase volume represents approximately $5.32M in transactions. Which of Mammoth Energy Services' major shareholders have been selling company stock? Of the 11 institutional investors that sold Mammoth Energy Services' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Valueworks LLC ($327.51K), Royce & Associates LP ($156.29K), Goldman Sachs Group Inc. ($45.71K), Bank of New York Mellon Corp ($27.19K), Penbrook Management LLC ($18.70K), Jane Street Group LLC ($18.55K), and JPMorgan Chase & Co. ($13.18K). How much institutional selling is happening at Mammoth Energy Services? Institutional investors have sold a total of 637,700 shares in the last 24 months. This volume of shares sold represents approximately $1.75M in transactions. Related Companies NOA Institutional Ownership BORR Institutional Ownership TBN Institutional Ownership GPRK Institutional Ownership GFR Institutional Ownership RNGR Institutional Ownership PNRG Institutional Ownership KGEI Institutional Ownership EPM Institutional Ownership AMPY Institutional Ownership This page (NASDAQ:TUSK) was last updated on 8/14/2025 by MarketBeat.com Staff From Our PartnersGENIUS Act: Cancel Your Money?A new law called the GENIUS Act could quietly trigger the most radical shift in American finance in decades. 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