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, Q2 2021
Institutional positions in Mammoth Energy Services, Inc. as of Jun 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
- 52
- −2 vs. Q1 2021
- Shares held
- 29.2M
- +376.4K (+1.3%) vs. Q1 2021
- Total value
- $134.0M
- −$19.3M (−12.6%) vs. Q1 2021
- New holders
- 7
- 19 more added
- Sold out
- 9
- 13 more reduced
Compare with Q1 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, Q2 2021
Shares, value and share of portfolio for each institution holding Mammoth Energy Services, Inc.; share changes are against Q1 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 1 | $0 | 0.00% | +1 | New |
| O'Shaughnessy Asset Management, LLC | 286 | $1.00K | 0.00% | 00.0% | Unchanged |
| Harbour Investments, Inc. | 205 | $1.00K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 334 | $2.00K | 0.00% | −3,538−91.4% | Reduced |
| Advisory Services Network, LLC | 500 | $2.00K | 0.00% | +500 | New |
| BNP Paribas Arbitrage, SA | 534 | $2.45K | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 800 | $4.00K | 0.00% | −3,100−79.5% | Reduced |
| Wells Fargo & Company | 2,008 | $9.00K | 0.00% | +10.0% | Added |
| UBS Group AG | 2,032 | $9.00K | 0.00% | +2,020+16,833.3% | Added |
| Advisor Group Holdings, Inc. | 2,123 | $10.0K | 0.00% | 00.0% | Unchanged |
| American Portfolios Advisors | 2,280 | $10.5K | 0.00% | 00.0% | Unchanged |
| NEXT Financial Group, Inc | 2,600 | $12.0K | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 2,872 | $13.0K | 0.00% | +546+23.5% | Added |
| Tower Research Capital LLC (TRC) | 5,200 | $24.0K | 0.00% | +4,666+873.8% | Added |
| Simplex Trading, LLC | 5,691 | $26.0K | 0.00% | +125+2.2% | Added |
| Schroder Investment Management Group | 6,500 | $30.0K | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 6,750 | $31.0K | 0.00% | +5,801+611.3% | Added |
| Mad River Investors | 10,700 | $49.0K | 0.03% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 13,005 | $60.0K | 0.00% | −96,953−88.2% | Reduced |
| Occudo Quantitative Strategies LP | 13,851 | $64.0K | 0.01% | +7+0.1% | Added |
| HSBC Holdings PLC | 14,243 | $64.0K | 0.00% | +14,243 | New |
| Charles Schwab Investment Management Inc | 15,843 | $73.0K | 0.00% | 00.0% | Unchanged |
| Brandywine Global Investment Management, LLC | 19,038 | $87.0K | 0.00% | +88+0.5% | Added |
| JPMorgan Chase & Co | 19,379 | $89.0K | 0.00% | +17,965+1,270.5% | Added |
| PDT Partners, LLC | 19,313 | $89.0K | 0.01% | +19,313 | New |
| Sigma Planning Corp | 22,000 | $101.0K | 0.00% | +500+2.3% | Added |
| NJ State Employees Deferred Compensation Plan | 24,000 | $110.0K | 0.01% | 00.0% | Unchanged |
| Invesco Ltd. | 37,703 | $173.0K | 0.00% | −315−0.8% | Reduced |
| Price T Rowe Associates Inc | 39,800 | $183.0K | 0.00% | −4,470−10.1% | Reduced |
| Russell Investments Group, Ltd. | 40,255 | $184.0K | 0.00% | +40,255 | New |
| Two Sigma Investments, LP | 45,720 | $210.0K | 0.00% | −13,458−22.7% | Reduced |
| Boston Partners | 47,725 | $219.0K | 0.00% | +47,725 | New |
| State Street Corp | 52,407 | $241.0K | 0.00% | +41,507+380.8% | Added |
| Cambridge Investment Research Advisors, Inc. | 55,029 | $253.0K | 0.00% | 00.0% | Unchanged |
| Stifel Financial Corp | 55,572 | $255.0K | 0.00% | 00.0% | Unchanged |
| Winton Group Ltd | 60,321 | $277.0K | 0.01% | −2,582−4.1% | Reduced |
| Morgan Stanley | 63,068 | $290.0K | 0.00% | +62,991+81,806.5% | Added |
| Royce & Associates LP | 65,976 | $303.0K | 0.00% | +65,976 | New |
| Northern Trust Corp | 76,993 | $354.0K | 0.00% | −6,591−7.9% | Reduced |
| Millennium Management LLC | 84,336 | $387.0K | 0.00% | −148,783−63.8% | Reduced |
| Squarepoint Ops LLC | 85,800 | $394.0K | 0.00% | +583+0.7% | Added |
| Bank of New York Mellon Corp | 91,232 | $419.0K | 0.00% | −12,153−11.8% | Reduced |
| Acadian Asset Management LLC | 102,360 | $470.0K | 0.00% | +33,514+48.7% | Added |
| Two Sigma Advisers, LP | 141,200 | $648.0K | 0.00% | −23,300−14.2% | Reduced |
| Dimensional Fund Advisors LP | 197,030 | $904.0K | 0.00% | −8,756−4.3% | Reduced |
| BlackRock Inc. | 201,515 | $925.0K | 0.00% | −84,662−29.6% | Reduced |
| Renaissance Technologies LLC | 222,524 | $1.02M | 0.00% | +88,452+66.0% | Added |
| Geode Capital Management, LLC | 310,369 | $1.42M | 0.00% | +3,391+1.1% | Added |
| Bridgeway Capital Management, LLC | 476,500 | $2.19M | 0.04% | +22,700+5.0% | Added |
| Vanguard Group Inc | 853,341 | $3.92M | 0.00% | +215,841+33.9% | Added |
| Valueworks LLC | 3,512,871 | $16.1M | 6.95% | +245,135+7.5% | Added |
| Wexford Capital LP | 22,066,259 | $101.3M | 15.26% | 00.0% | Unchanged |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −40,601−100.0% | Sold out |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −36,871−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −26,542−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −12,755−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −11,424−100.0% | Sold out |
| Pinz Capital Management, LP | 0 | $0 | 0.00% | −8,028−100.0% | Sold out |
| Citigroup Inc | 0 | $0 | 0.00% | −6,197−100.0% | Sold out |
| Dorsey Wright & Associates | 0 | $0 | 0.00% | −6,190−100.0% | Sold out |
| International Assets Investment Management, LLC | 0 | $0 | 0.00% | −204−100.0% | Sold out |