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Mammoth Energy Services (TUSK) Institutional Ownership

Mammoth Energy Services logo
$3.06 -0.17 (-5.26%)
As of 04:00 PM Eastern
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Institutional Ownership Changes (13F Filings) for Mammoth Energy Services (NASDAQ:TUSK)

Current
Institutional Ownership
Percentage
79.67%
Number of
Institutional Buyers
(last 12 months)
33
Total
Institutional Inflows
(last 12 months)
$7.15M
Number of
Institutional Sellers
(last 12 months)
11
Total
Institutional Outflows
(last 12 months)
$1.75M
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TUSK Institutional Buying and Selling by Quarter

Mammoth Energy Services Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/21/2026 Round Rock Advisors LLC152,841$497K0.1%N/A0.318%
8/20/2026 Susquehanna International Group LLP49,920$162K0.0%+37.5%0.104%
8/19/2026 Hsbc Holdings PLC33,706$108K0.0%N/A0.070%
8/19/2026 Wellington Management Group LLP47,486$154K0.0%-30.6%0.099%
8/19/2026 Archer Investment Corp8,200$27K0.0%N/A0.017%
8/18/2026 Empowered Funds LLC241,313$784K0.0%N/A0.501%
8/17/2026 Bank of America Corp DE97,046$315K0.0%N/A0.202%
8/14/2026 Hsbc Holdings PLC33,706$108K0.0%N/A0.070%
8/14/2026 Algert Global LLC45,997$149K0.0%N/A0.096%
8/13/2026 Connor Clark & Lunn Investment Management Ltd.28,581$93K0.0%N/A0.059%
8/12/2026 Ieq Capital LLC24,392$79K0.0%N/A0.051%
8/7/2026 BlackRock Inc.407,976$1.33M0.0%N/A0.847%
8/6/2026 Bank of New York Mellon Corp62,007$202K0.0%N/A0.129%
8/6/2026 GSA Capital Partners LLP129,547$421K0.0%N/A0.269%
7/10/2026 Marquette Asset Management LLC109,826$357K0.0%N/A0.228%
7/8/2026 FNY Investment Advisers LLC76,481$248K0.1%N/A0.159%
6/16/2026 Empowered Funds LLC241,313$591K0.0%+10.2%0.501%
5/19/2026 Bank of America Corp DE25,589$63K0.0%+15.9%0.053%
5/18/2026 Empowered Funds LLC241,313$591K0.0%+10.2%0.501%
5/14/2026 Renaissance Technologies LLC231,972$568K0.0%+24.7%0.482%
5/14/2026 Sei Investments Co.13,579$33K0.0%N/A0.028%
5/13/2026 Levin Capital Strategies L.P.25,000$61K0.0%N/A0.052%
5/7/2026 Dimensional Fund Advisors LP686,199$1.68M0.0%-1.9%1.419%
5/5/2026 Sanctuary Advisors LLC16,676$41K0.0%N/A0.034%
3/9/2026 Corient Private Wealth LLC97,902$181K0.0%N/A0.203%
2/19/2026 Corient Private Wealth LLC97,902$181K0.0%N/A0.203%
2/18/2026 NewEdge Advisors LLC20,498$38K0.0%-19.6%0.043%
2/18/2026 Empowered Funds LLC218,991$405K0.0%+10.1%0.454%
2/18/2026 XTX Topco Ltd45,235$84K0.0%+80.3%0.094%
2/18/2026 Quadrature Capital Ltd65,875$122K0.0%N/A0.137%
2/18/2026 Bridgeway Capital Management LLC409,991$758K0.0%+5.1%0.851%
2/17/2026 Osaic Holdings Inc.79,686$147K0.0%+156.2%0.165%
2/17/2026 Russell Investments Group Ltd.247,491$458K0.0%+11,736.0%0.514%
2/16/2026 Squarepoint Ops LLC76,164$141K0.0%N/A0.158%
2/16/2026 Landscape Capital Management L.L.C.72,619$134K0.0%N/A0.151%
2/16/2026 Barclays PLC38,064$70K0.0%-35.8%0.079%
2/13/2026 Marshall Wace LLP30,801$57K0.0%-30.8%0.064%
2/13/2026 Wells Fargo & Company MN27,501$51K0.0%+45.5%0.057%
2/12/2026 Jane Street Group LLC39,652$73K0.0%-23.5%0.082%
2/12/2026 Renaissance Technologies LLC186,072$344K0.0%+38.9%0.386%
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2/12/2026 Dimensional Fund Advisors LP699,678$1.29M0.0%-25.3%1.452%
2/11/2026 Empowered Funds LLC218,991$405K0.0%+10.1%0.454%
2/11/2026 Franklin Resources Inc.72,088$133K0.0%+356.5%0.150%
2/10/2026 Goldman Sachs Group Inc.89,944$166K0.0%+72.7%0.187%
2/9/2026 Geode Capital Management LLC585,719$1.08M0.0%+1.1%1.215%
1/26/2026 Steinberganna Wealth Management13,615$25K0.0%-43.9%0.028%
11/17/2025 NewEdge Advisors LLC25,494$58K0.0%N/A0.053%
11/14/2025 Valueworks LLC2,038,205$4.67M1.4%-14.7%4.230%
11/14/2025 Virtu Financial LLC14,148$32K0.0%N/A0.029%
11/14/2025 Bridgeway Capital Management LLC389,964$893K0.0%+11.3%0.809%
11/13/2025 Franklin Resources Inc.15,791$36K0.0%N/A0.033%
11/12/2025 Dimensional Fund Advisors LP936,414$2.15M0.0%-5.8%1.943%
11/12/2025 Royce & Associates LP17,954$41K0.0%-56.4%0.037%
11/7/2025Vanguard Group Inc.945,630$2.17M0.0%-1.2%1.962%
10/23/2025 Steinberganna Wealth Management24,265$56K0.0%N/A0.050%
9/4/2025 Osaic Holdings Inc.29,433$82K0.0%-50.6%0.061%
8/15/2025 Bridgeway Capital Management LLC350,454$981K0.0%+4.4%0.727%
8/15/2025 Adage Capital Partners GP L.L.C.4,575,000$12.81M0.0%+10.2%9.494%
8/14/2025 Jane Street Group LLC17,268$48K0.0%+48.3%0.036%
8/13/2025 Marshall 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%
6/27/2025 Goldman Sachs Group Inc.66,588$136K0.0%-25.6%0.138%
5/16/2025Empowered Funds LLC159,685$326K0.0%+8.9%0.332%
5/16/2025Goldman Sachs Group Inc.66,588$136K0.0%-25.6%0.138%
5/16/2025Adage Capital Partners GP L.L.C.4,150,000$8.47M0.0%+1.2%8.623%
5/14/2025Valueworks LLC2,808,860$5.73M2.2%-0.5%5.836%
5/14/2025Wellington Management Group LLP61,799$126K0.0%+24.7%0.128%
5/12/2025Nuveen LLC36,843$75K0.0%N/A0.077%
5/6/2025Royce & Associates LP1,293,637$2.64M0.0%-10.8%2.688%
4/9/2025NBC Securities Inc.56,940$116K0.0%+101,578.6%0.118%
4/1/2025Penbrook Management LLC14,000$29K0.0%-36.9%0.029%
2/17/2025Valueworks 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%
2/14/2025Dimensional 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%
2/12/2025Geode Capital Management LLC537,376$1.61M0.0%+1.6%1.117%
2/12/2025JPMorgan Chase & Co.63,079$189K0.0%+465.2%0.131%
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2/11/2025LPL Financial LLC10,057$30K0.0%-35.4%0.021%
2/10/2025Royce & Associates LP1,449,922$4.35M0.0%+7.3%3.013%
2/6/2025Charles Schwab Investment Management Inc.70,674$212K0.0%+11.1%0.147%
2/4/2025Bank of New York Mellon Corp121,993$366K0.0%-18.2%0.253%
1/28/2025Empowered Funds LLC146,574$440K0.0%+76.3%0.305%
1/23/2025Penbrook Management LLC22,200$67K0.0%-32.1%0.046%
12/26/2024JPMorgan Chase & Co.11,160$46K0.0%-54.1%0.023%
11/19/2024Barclays PLC57,081$233K0.0%+65.1%0.119%
11/16/2024Geode Capital Management LLC528,850$2.16M0.0%+1.9%1.099%
11/15/2024Barclays PLC57,081$233K0.0%+65.1%0.119%


TUSK Institutional Ownership - Frequently Asked Questions

During the previous two years, 60 institutional investors and hedge funds held shares of Mammoth Energy Services. The most heavily invested institutionals were Wexford Capital LP ($90.26M), Adage Capital Partners GP L.L.C. ($12.81M), Valueworks LLC ($4.67M), Vanguard Group Inc. ($2.17M), Dimensional Fund Advisors LP ($1.68M), State Street Corp ($1.65M), and BlackRock Inc. ($1.33M).Learn more on Mammoth Energy Services' institutional investors.

79.67% of Mammoth Energy Services' stock is owned by institutional investors. Learn more on TUSK's institutional investor holdings.

Of the 54 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. ($521.28K), Rangeley Capital LLC ($432.34K), BlackRock Inc. ($407.98K), Empowered Funds LLC ($406.69K), Royce & Associates LP ($276.94K), Russell Investments Group Ltd. ($245.40K), and JPMorgan Chase & Co. ($215.21K).

Institutional investors have bought a total of 2,679,915 shares in the last 24 months. This purchase volume represents approximately $7.15M in transactions.

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 ($350.83K), Dimensional Fund Advisors LP ($307.72K), Osaic Holdings Inc. ($30.12K), Royce & Associates LP ($23.20K), Barclays PLC ($21.21K), Wellington Management Group LLP ($20.93K), and Marshall Wace LLP ($13.72K).

Institutional investors have sold a total of 807,116 shares in the last 24 months. This volume of shares sold represents approximately $1.75M in transactions.


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Institutional ownership data for NASDAQ:TUSK is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 8/21/2026. New 13F filings are added each quarter as they're published.
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