Mammoth Energy Services (TUSK) Institutional Ownership $2.44 -0.01 (-0.41%) Closing price 04:00 PM EasternExtended Trading$2.42 -0.02 (-0.61%) As of 04:11 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)24TotalInstitutional Inflows(last 12 months)$4.80MNumber ofInstitutional Sellers(last 12 months)12TotalInstitutional Outflows(last 12 months)$2.21M 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 CompanyDetails5/16/2025 Empowered Funds LLC159,685$326K0.0%+8.9%0.332% 5/16/2025 Goldman Sachs Group Inc.66,588$136K0.0%-25.6%0.138% 5/16/2025 Adage 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% 5/14/2025 Wellington 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% 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. 2/17/2025 Occudo Quantitative Strategies LP13,749$41K0.0%N/A0.029% 2/17/2025 Bridgeway Capital Management LLC460,274$1.38M0.0%+14.1%0.956% 2/17/2025 Bank of America Corp DE22,882$69K0.0%+45.8%0.048% 2/14/2025 PDT Partners LLC15,450$46K0.0%N/A0.032% 2/14/2025 Northern Trust Corp206,039$618K0.0%+2.1%0.428% 2/14/2025 Adage 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% 2/13/2025 Marshall Wace LLP14,163$42K0.0%N/A0.029% 2/13/2025 Barclays PLC61,549$185K0.0%+7.8%0.128% 2/13/2025 Invesco Ltd.10,122$30K0.0%N/A0.021% 2/12/2025 Rangeley 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% 11/19/2024 Barclays PLC57,081$233K0.0%+65.1%0.119% 11/16/2024 Geode Capital Management LLC528,850$2.16M0.0%+1.9%1.099% 11/15/2024 Barclays PLC57,081$233K0.0%+65.1%0.119% 11/15/2024 XTX Topco Ltd12,964$53K0.0%N/A0.027% 11/15/2024 Jane Street Group LLC18,544$76K0.0%-50.0%0.039% 11/15/2024 Wellington Management Group LLP48,071$197K0.0%N/A0.100% 11/15/2024 Wexford Capital LP22,068,212$90.26M21.6%0.0%45.851% 11/15/2024 State Street Corp403,688$1.65M0.0%+1.4%0.839% 11/13/2024 FMR LLC10,967$45K0.0%+32.7%0.023% 11/6/2024 Archer Investment Corp12,400$51K0.0%-42.1%0.026% Market Panic: Trump Just Dropped a Bomb on Your Stocks (Ad)tock Market Panic: Trump Just Dropped a Bomb on Your Stocks The market is in freefall—and Trump's new tariffs just lit the fuse. Millions of investors are blindsided as stocks plunge… but this is only Phase 1. If you're still holding the wrong assets, you could lose 30% or more in the coming weeks.Don't wait for the next drop to wipe you out. Get the FREE Guide Before Markets Open Tomorrow11/6/2024 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% 8/9/2024 Renaissance Technologies LLC130,672$429K0.0%-2.7%0.271% 8/9/2024 Dimensional Fund Advisors LP806,280$2.65M0.0%+14.0%1.675% 8/6/2024Acadian 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% 5/10/2024Acadian 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% 5/1/2024 BNP 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% 2/14/2024 CastleKnight 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% 11/15/2023 Adage 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% 11/13/2023Acadian 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% 11/13/2023 WINTON GROUP Ltd35,816$166K0.0%+250.0%0.075% 11/8/2023 Boston Partners35,093$163K0.0%-43.6%0.073% 11/7/2023 New 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% 9/21/2023 Barclays PLC29,674$143K0.0%-42.4%0.062% 8/15/2023 Kanen Wealth Management LLC1,767,074$8.54M5.7%-0.5%3.704% 8/14/2023 Wexford 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% 8/14/2023 Prelude Capital Management LLC10,403$50K0.0%N/A0.022% 8/10/2023 Cruiser Capital Advisors LLC17,125$83K0.1%N/A0.036% 8/10/2023 Boston Partners62,186$300K0.0%+53.8%0.130% 8/7/2023Acadian 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% 5/15/2023 Wexford 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% 5/12/2023 Long Focus Capital Management LLC29,470$124K0.0%-48.9%0.062% 5/11/2023Acadian 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% Market Panic: Trump Just Dropped a Bomb on Your Stocks (Ad)tock Market Panic: Trump Just Dropped a Bomb on Your Stocks The market is in freefall—and Trump's new tariffs just lit the fuse. Millions of investors are blindsided as stocks plunge… but this is only Phase 1. If you're still holding the wrong assets, you could lose 30% or more in the coming weeks.Don't wait for the next drop to wipe you out. Get the FREE Guide Before Markets Open Tomorrow5/9/2023 Russell Investments Group Ltd.147,488$622K0.0%-10.8%0.309% 5/3/2023 Jump Financial LLC67,937$287K0.0%+64.1%0.142% 5/2/2023 Exencial Wealth Advisors LLC507,610$2.14M0.1%+53.7%1.064% 5/1/2023 Virtu Financial LLC12,288$52K0.0%N/A0.026% 4/20/2023 Penbrook Management LLC81,300$343K0.3%N/A0.172% 4/20/2023 Ritholtz Wealth Management17,091$72K0.0%-33.5%0.036% 2/14/2023 683 Capital Management LLC32,070$277K0.0%N/A0.068% 2/13/2023 Kanen Wealth Management LLC1,114,576$9.64M4.9%+8.6%2.356% 2/10/2023 Connor Clark & Lunn Investment Management Ltd.70,030$606K0.0%+20.7%0.148% 2/10/2023 HRT Financial LP61,993$536K0.0%N/A0.131% (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, 50 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 TUSK's 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 37 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), Dimensional Fund Advisors LP ($197.39K), NBC Securities Inc. ($115.62K), Wexford Capital LP ($91.32K), and Empowered Funds LLC ($86.11K). How much institutional buying is happening at Mammoth Energy Services? Institutional investors have bought a total of 2,275,148 shares in the last 24 months. This purchase volume represents approximately $8.27M in transactions. Which Mammoth Energy Services major shareholders have been selling company stock? Of the 22 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: Acadian Asset Management LLC ($420.08K), Valueworks LLC ($336.71K), X Square Capital LLC ($190K), Royce & Associates LP ($156.29K), Penbrook Management LLC ($37.70K), Bank of New York Mellon Corp ($27.19K), and Boston Partners ($27.09K). How much institutional selling is happening at Mammoth Energy Services? Institutional investors have sold a total of 1,360,907 shares in the last 24 months. This volume of shares sold represents approximately $4.97M in transactions. Related Companies BORR Institutional Ownership GPRK Institutional Ownership TBN Institutional Ownership PNRG Institutional Ownership GFR Institutional Ownership RNGR Institutional Ownership KGEI Institutional Ownership GTE Institutional Ownership EPM Institutional Ownership EPSN Institutional Ownership This page (NASDAQ:TUSK) was last updated on 5/21/2025 by MarketBeat.com Staff From Our PartnersMarket Panic: Trump Just Dropped a Bomb on Your Stockstock Market Panic: Trump Just Dropped a Bomb on Your Stocks The market is in freefall—and Trump's new tarif...American Alternative | SponsoredGold Hits New Highs as Global Markets SpiralWhen Trump took office in 2017, gold was just $1,100 an ounce. By the time he left, it had soared to $1,839. ...Premier Gold Co | SponsoredWhite House to reset Social Security?Elon Musk's parting DOGE gift looks set to shock America... 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