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, Q3 2021
Institutional positions in Mammoth Energy Services, Inc. as of Sep 30, 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
- 46
- −5 vs. Q2 2021
- Shares held
- 7.60M
- +470.5K (+6.6%) vs. Q2 2021
- Total value
- $22.1M
- −$10.6M (−32.4%) vs. Q2 2021
- New holders
- 2
- 12 more added
- Sold out
- 7
- 17 more reduced
1 institution that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2021
Shares, value and share of portfolio for each institution holding Mammoth Energy Services, Inc.; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Valueworks LLC | 3,579,579 | $10.4M | 4.44% | +66,708+1.9% | Added |
| Royce & Associates LP | 827,790 | $2.41M | 0.02% | +761,814+1,154.7% | Added |
| Vanguard Group Inc | 508,130 | $1.48M | 0.00% | −345,211−40.5% | Reduced |
| Bridgeway Capital Management, LLC | 501,016 | $1.46M | 0.03% | +24,516+5.1% | Added |
| Geode Capital Management, LLC | 302,684 | $880.0K | 0.00% | −7,685−2.5% | Reduced |
| Exencial Wealth Advisors, LLC | 245,777 | $715.0K | 0.03% | +245,777 | New |
| BlackRock Inc. | 224,005 | $651.0K | 0.00% | +22,490+11.2% | Added |
| Russell Investments Group, Ltd. | 180,917 | $525.0K | 0.00% | +140,662+349.4% | Added |
| Dimensional Fund Advisors LP | 162,623 | $473.0K | 0.00% | −34,407−17.5% | Reduced |
| Renaissance Technologies LLC | 139,972 | $407.0K | 0.00% | −82,552−37.1% | Reduced |
| Bank of New York Mellon Corp | 91,232 | $265.0K | 0.00% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 88,400 | $257.0K | 0.00% | −52,800−37.4% | Reduced |
| Boston Partners | 76,378 | $222.0K | 0.00% | +28,653+60.0% | Added |
| State Street Corp | 70,714 | $206.0K | 0.00% | +18,307+34.9% | Added |
| Stifel Financial Corp | 55,572 | $162.0K | 0.00% | 00.0% | Unchanged |
| Cambridge Investment Research Advisors, Inc. | 55,029 | $160.0K | 0.00% | 00.0% | Unchanged |
| Winton Group Ltd | 53,943 | $157.0K | 0.01% | −6,378−10.6% | Reduced |
| Northern Trust Corp | 50,477 | $147.0K | 0.00% | −26,516−34.4% | Reduced |
| Squarepoint Ops LLC | 45,576 | $133.0K | 0.00% | −40,224−46.9% | Reduced |
| Millennium Management LLC | 44,696 | $130.0K | 0.00% | −39,640−47.0% | Reduced |
| Price T Rowe Associates Inc | 39,800 | $116.0K | 0.00% | 00.0% | Unchanged |
| Invesco Ltd. | 39,067 | $114.0K | 0.00% | +1,364+3.6% | Added |
| Susquehanna International Group, LLP | 29,662 | $86.0K | 0.00% | +16,657+128.1% | Added |
| Morgan Stanley | 26,730 | $77.0K | 0.00% | −36,338−57.6% | Reduced |
| NJ State Employees Deferred Compensation Plan | 24,000 | $70.0K | 0.01% | 00.0% | Unchanged |
| Mad River Investors | 10,700 | $49.0K | 0.03% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 15,843 | $47.0K | 0.00% | 00.0% | Unchanged |
| Sigma Planning Corp | 14,500 | $42.0K | 0.00% | −7,500−34.1% | Reduced |
| HSBC Holdings PLC | 14,243 | $42.0K | 0.00% | 00.0% | Unchanged |
| Ergoteles LLC | 14,599 | $42.0K | 0.00% | +14,599 | New |
| PDT Partners, LLC | 13,913 | $40.0K | 0.00% | −5,400−28.0% | Reduced |
| Occudo Quantitative Strategies LP | 13,029 | $38.0K | 0.00% | −822−5.9% | Reduced |
| JPMorgan Chase & Co | 11,603 | $34.0K | 0.00% | −7,776−40.1% | Reduced |
| Bank of America Corp | 10,066 | $29.0K | 0.00% | +3,316+49.1% | Added |
| Simplex Trading, LLC | 5,691 | $25.0K | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 3,034 | $8.00K | 0.00% | +162+5.6% | Added |
| American Portfolios Advisors | 2,280 | $6.63K | 0.00% | 00.0% | Unchanged |
| NEXT Financial Group, Inc | 1,900 | $6.00K | 0.00% | −700−26.9% | Reduced |
| Advisor Group Holdings, Inc. | 2,123 | $6.00K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 1,865 | $5.00K | 0.00% | −143−7.1% | Reduced |
| UBS Group AG | 794 | $2.00K | 0.00% | −1,238−60.9% | Reduced |
| Group One Trading, L.P. | 800 | $2.00K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 534 | $1.55K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 415 | $1.00K | 0.00% | +81+24.3% | Added |
| Harbour Investments, Inc. | 205 | $1.00K | 0.00% | 00.0% | Unchanged |
| O'Shaughnessy Asset Management, LLC | 286 | $1.00K | 0.00% | 00.0% | Unchanged |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −102,360−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −45,720−100.0% | Sold out |
| Brandywine Global Investment Management, LLC | 0 | $0 | 0.00% | −19,038−100.0% | Sold out |
| Schroder Investment Management Group | 0 | $0 | 0.00% | −6,500−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −5,200−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| FMR LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Wexford Capital LP | – | – | – | – | Not filed |