Mammoth Energy Services, Inc.
TUSK- Exchange
- Nasdaq
- Industry
- Oil & Gas Field Services, NEC
- SEC CIK
- 0001679268
In the last 90 days, Mammoth Energy Services, Inc. insiders filed 1 open-market purchase and 0 sales; 93 institutions reported holding it in 13F filings for Q2 2026, worth $84.7M in total; no superinvestor holds it.
13F holders, Q4 2021
Institutional positions in Mammoth Energy Services, Inc. as of Dec 31, 2021. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 44
- −2 vs. Q3 2021
- Shares held
- 30.2M
- +22.6M (+297.6%) vs. Q3 2021
- Total value
- $14.5M
- −$7.61M (−34.4%) vs. Q3 2021
- New holders
- 6
- 7 more added
- Sold out
- 8
- 17 more reduced
Compare with Q3 2021: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting TUSK on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 93 | $84.7M |
| Q1 2026 | 90 | $86.0M |
| Q4 2025 | 72 | $63.6M |
| Q3 2025 | 77 | $82.6M |
| Q2 2025 | 66 | $101.9M |
| Q1 2025 | 66 | $76.1M |
| Q4 2024 | 67 | $112.6M |
| Q3 2024 | 64 | $151.9M |
| Q2 2024 | 67 | $127.0M |
| Q1 2024 | 67 | $141.9M |
| Q4 2023 | 67 | $175.4M |
| Q3 2023 | 75 | $183.6M |
| Q2 2023 | 72 | $186.7M |
| Q1 2023 | 77 | $161.9M |
| Q4 2022 | 80 | $323.2M |
| Q3 2022 | 58 | $126.1M |
| Q2 2022 | 49 | $27.8M |
| Q1 2022 | 50 | $21.5M |
| Q4 2021 | 44 | $14.5M |
| Q3 2021 | 46 | $22.1M |
| Q2 2021 | 52 | $134.0M |
| Q1 2021 | 54 | $153.3M |
Institutions, Q4 2021
Shares, value and share of portfolio for each institution holding Mammoth Energy Services, Inc.; share changes are against Q3 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Valueworks LLC | 3,541,258 | $6.45M | 2.55% | −38,321−1.1% | Reduced |
| Royce & Associates LP | 1,259,416 | $2.29M | 0.02% | +431,626+52.1% | Added |
| Vanguard Group Inc | 484,617 | $882.0K | 0.00% | −23,513−4.6% | Reduced |
| Bridgeway Capital Management, LLC | 387,989 | $706.0K | 0.01% | −113,027−22.6% | Reduced |
| Geode Capital Management, LLC | 280,404 | $510.0K | 0.00% | −22,280−7.4% | Reduced |
| Exencial Wealth Advisors, LLC | 245,777 | $447.0K | 0.02% | 00.0% | Unchanged |
| BlackRock Inc. | 230,566 | $420.0K | 0.00% | +6,561+2.9% | Added |
| Russell Investments Group, Ltd. | 180,917 | $329.0K | 0.00% | 00.0% | Unchanged |
| Dimensional Fund Advisors LP | 157,866 | $287.0K | 0.00% | −4,757−2.9% | Reduced |
| Long Focus Capital Management, LLC | 122,681 | $223.0K | 0.06% | +122,681 | New |
| Renaissance Technologies LLC | 116,472 | $212.0K | 0.00% | −23,500−16.8% | Reduced |
| Susquehanna International Group, LLP | 105,925 | $193.0K | 0.00% | +76,263+257.1% | Added |
| Yaupon Capital Management LP | 100,000 | $182.0K | 0.10% | +100,000 | New |
| Bank of New York Mellon Corp | 91,232 | $166.0K | 0.00% | 00.0% | Unchanged |
| Millennium Management LLC | 88,909 | $162.0K | 0.00% | +44,213+98.9% | Added |
| Two Sigma Advisers, LP | 84,100 | $153.0K | 0.00% | −4,300−4.9% | Reduced |
| State Street Corp | 70,714 | $129.0K | 0.00% | 00.0% | Unchanged |
| Full Sail Capital, LLC | 67,721 | $125.0K | 0.01% | +67,721 | New |
| Boston Partners | 62,701 | $114.0K | 0.00% | −13,677−17.9% | Reduced |
| Stifel Financial Corp | 55,572 | $101.0K | 0.00% | 00.0% | Unchanged |
| Northern Trust Corp | 44,651 | $81.0K | 0.00% | −5,826−11.5% | Reduced |
| Invesco Ltd. | 36,693 | $67.0K | 0.00% | −2,374−6.1% | Reduced |
| NJ State Employees Deferred Compensation Plan | 24,000 | $44.0K | 0.01% | 00.0% | Unchanged |
| Winton Group Ltd | 18,803 | $34.0K | 0.00% | −35,140−65.1% | Reduced |
| Price T Rowe Associates Inc | 18,000 | $33.0K | 0.00% | −21,800−54.8% | Reduced |
| Charles Schwab Investment Management Inc | 15,843 | $29.0K | 0.00% | 00.0% | Unchanged |
| Virtu Financial LLC | 15,850 | $29.0K | 0.00% | +15,850 | New |
| HSBC Holdings PLC | 14,243 | $26.0K | 0.00% | 00.0% | Unchanged |
| Occudo Quantitative Strategies LP | 13,029 | $24.0K | 0.00% | 00.0% | Unchanged |
| Mad River Investors | 10,700 | $19.0K | 0.01% | 00.0% | Unchanged |
| Simplex Trading, LLC | 8,347 | $15.0K | 0.00% | +2,656+46.7% | Added |
| Morgan Stanley | 7,788 | $14.0K | 0.00% | −18,942−70.9% | Reduced |
| UBS Group AG | 4,745 | $9.00K | 0.00% | +3,951+497.6% | Added |
| Tower Research Capital LLC (TRC) | 4,418 | $8.00K | 0.00% | +4,418 | New |
| Barclays PLC | 2,872 | $5.00K | 0.00% | −162−5.3% | Reduced |
| American Portfolios Advisors | 2,280 | $4.15K | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 1,957 | $4.00K | 0.00% | −8,109−80.6% | Reduced |
| Advisor Group Holdings, Inc. | 2,123 | $4.00K | 0.00% | 00.0% | Unchanged |
| NEXT Financial Group, Inc | 1,900 | $3.00K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 586 | $1.00K | 0.00% | −1,279−68.6% | Reduced |
| Royal Bank of Canada | 488 | $1.00K | 0.00% | +73+17.6% | Added |
| BNP Paribas Arbitrage, SA | 534 | $972 | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 16 | $0 | 0.00% | −11,587−99.9% | Reduced |
| Wexford Capital LP | 22,240,173 | – | – | +22,240,173 | New |
| Cambridge Investment Research Advisors, Inc. | 0 | $0 | 0.00% | −55,029−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −45,576−100.0% | Sold out |
| Sigma Planning Corp | 0 | $0 | 0.00% | −14,500−100.0% | Sold out |
| Ergoteles LLC | 0 | $0 | 0.00% | −14,599−100.0% | Sold out |
| PDT Partners, LLC | 0 | $0 | 0.00% | −13,913−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −800−100.0% | Sold out |
| Harbour Investments, Inc. | 0 | $0 | 0.00% | −205−100.0% | Sold out |
| O'Shaughnessy Asset Management, LLC | 0 | $0 | 0.00% | −286−100.0% | Sold out |