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 2026
Institutional positions in Mammoth Energy Services, Inc. as of Jun 30, 2026. 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
- 93
- +4 vs. Q1 2026
- Shares held
- 26.1M
- −8.99M (−25.6%) vs. Q1 2026
- Total value
- $84.7M
- −$1.23M (−1.4%) vs. Q1 2026
- New holders
- 27
- 32 more added
- Sold out
- 23
- 24 more reduced
1 institution that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 2026
Shares, value and share of portfolio for each institution holding Mammoth Energy Services, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Sanctuary Advisors, LLC | 0 | $0 | 0.00% | −16,676−100.0% | Sold out |
| SEI Investments Co | 0 | $0 | 0.00% | −13,579−100.0% | Sold out |
| Price T Rowe Associates Inc | 0 | $0 | 0.00% | −13,385−100.0% | Sold out |
| Mirae Asset Global ETFs Holdings Ltd. | 0 | $0 | 0.00% | −12,570−100.0% | Sold out |
| Valueworks LLC | 0 | $0 | 0.00% | −10,720−100.0% | Sold out |
| New York State Common Retirement Fund | 0 | $0 | 0.00% | −10,696−100.0% | Sold out |
| Police & Firemen's Retirement System of New Jersey | 0 | $0 | 0.00% | −9,637−100.0% | Sold out |
| Alliancebernstein L.P. | 0 | $0 | 0.00% | −10,950−100.0% | Sold out |
| Legal & General Group Plc | 0 | $0 | 0.00% | −2,179−100.0% | Sold out |
| Ameritas Investment Partners, Inc. | 0 | $0 | 0.00% | −1,924−100.0% | Sold out |
| Sterling Capital Management LLC | 0 | $0 | 0.00% | −803−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| Optiver Holding B.V. | 0 | $0 | 0.00% | −200−100.0% | Sold out |
| MAI Capital Management | 0 | $0 | 0.00% | −168−100.0% | Sold out |
| Root Financial Partners, LLC | 0 | $0 | 0.00% | −32−100.0% | Sold out |
| Wealth Preservation Advisors, LLC | 0 | $0 | 0.00% | −15−100.0% | Sold out |
| CWM, LLC | – | – | – | – | Not filed |