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 2025
Institutional positions in Mammoth Energy Services, Inc. as of Sep 30, 2025. 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
- 77
- +11 vs. Q2 2025
- Shares held
- 36.1M
- −340.2K (−0.9%) vs. Q2 2025
- Total value
- $82.6M
- −$19.4M (−19.0%) vs. Q2 2025
- New holders
- 16
- 17 more added
- Sold out
- 5
- 30 more reduced
Compare with Q2 2025: 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 2025
Shares, value and share of portfolio for each institution holding Mammoth Energy Services, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Allworth Financial LP | 1 | $3 | 0.00% | +1 | New |
| Essential Partners LLC | 2 | $5 | 0.00% | −1−33.3% | Reduced |
| EverSource Wealth Advisors, LLC | 4 | $9 | 0.00% | 00.0% | Unchanged |
| True Wealth Design, LLC | 8 | $19 | 0.00% | −4−33.3% | Reduced |
| Clearstead Advisors, LLC | 11 | $26 | 0.00% | +11 | New |
| IFP Advisors, Inc | 30 | $69 | 0.00% | +30 | New |
| SRS Capital Advisors, Inc. | 70 | $160 | 0.00% | +70 | New |
| SBI Securities Co., Ltd. | 120 | $275 | 0.00% | −2−1.6% | Reduced |
| Transamerica Financial Advisors, Inc. | 156 | $357 | 0.00% | +156 | New |
| Optiver Holding B.V. | 328 | $751 | 0.00% | +328 | New |
| Nisa Investment Advisors, LLC | 431 | $987 | 0.00% | −1,386−76.3% | Reduced |
| CWM, LLC | 653 | $1.00K | 0.00% | +16+2.5% | Added |
| Advisory Services Network, LLC | 500 | $1.15K | 0.00% | +500 | New |
| Citigroup Inc | 727 | $1.67K | 0.00% | −8,731−92.3% | Reduced |
| Amalgamated Bank | 785 | $2.00K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 1,674 | $3.83K | 0.00% | +1,023+157.1% | Added |
| California State Teachers Retirement System | 1,762 | $4.04K | 0.00% | +1+0.1% | Added |
| Ameritas Investment Partners, Inc. | 1,924 | $4.41K | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 2,091 | $4.79K | 0.00% | +2,091 | New |
| Legal & General Group Plc | 2,179 | $4.99K | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 3,745 | $8.57K | 0.00% | −342−8.4% | Reduced |
| Union Bancaire Privee, UBP SA | 4,230 | $10.3K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 4,870 | $11.2K | 0.00% | −2,699−35.7% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 9,637 | $22.1K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 10,696 | $24.5K | 0.00% | 00.0% | Unchanged |
| Invesco Ltd. | 10,733 | $24.6K | 0.00% | +10,733 | New |
| Archer Investment Corp | 11,200 | $25.6K | 0.01% | −1,000−8.2% | Reduced |
| AQR Capital Management LLC | 11,299 | $25.9K | 0.00% | +11,299 | New |
| Alliancebernstein L.P. | 11,390 | $26.1K | 0.00% | +1,200+11.8% | Added |
| Bank of America Corp | 11,831 | $27.1K | 0.00% | −1,238−9.5% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 11,946 | $27.4K | 0.00% | −2,024−14.5% | Reduced |
| Intech Investment Management LLC | 12,175 | $27.9K | 0.00% | +95+0.8% | Added |
| FMR LLC | 12,646 | $29.0K | 0.00% | +1,732+15.9% | Added |
| Price T Rowe Associates Inc | 13,385 | $31.0K | 0.00% | −29,900−69.1% | Reduced |
| Virtu Financial LLC | 14,148 | $32.0K | 0.00% | +14,148 | New |
| HRT Financial LP | 15,076 | $34.0K | 0.00% | +15,076 | New |
| BNP Paribas Arbitrage, SA | 15,470 | $35.4K | 0.00% | +1,945+14.4% | Added |
| Franklin Resources Inc | 15,791 | $36.2K | 0.00% | +15,791 | New |
| Royce & Associates LP | 17,954 | $41.1K | 0.00% | −23,200−56.4% | Reduced |
| Wells Fargo & Company | 18,903 | $43.3K | 0.00% | +3,335+21.4% | Added |
| UBS Group AG | 20,468 | $46.9K | 0.00% | −16,203−44.2% | Reduced |
| NJ State Employees Deferred Compensation Plan | 24,000 | $55.0K | 0.01% | 00.0% | Unchanged |
| Steinberganna Wealth Management | 24,265 | $55.6K | 0.03% | +24,265 | New |
| XTX Topco Ltd | 25,082 | $57.4K | 0.00% | −11,580−31.6% | Reduced |
| GWM Advisors LLC | 25,494 | $58.4K | 0.00% | +25,494 | New |
| Advisor Group Holdings, Inc. | 31,103 | $73.7K | 0.00% | +1,670+5.7% | Added |
| Rhumbline Advisers | 34,781 | $79.6K | 0.00% | +2,977+9.4% | Added |
| NBC Securities, Inc. | 36,200 | $82.9K | 0.01% | −8,380−18.8% | Reduced |
| Nuveen, LLC | 36,843 | $84.4K | 0.00% | 00.0% | Unchanged |
| Acadian Asset Management LLC | 40,242 | $90.0K | 0.00% | +11,679+40.9% | Added |
| Marshall Wace, LLP | 44,517 | $101.9K | 0.00% | −12,919−22.5% | Reduced |
| Jane Street Group, LLC | 51,803 | $118.6K | 0.00% | +34,535+200.0% | Added |
| Goldman Sachs Group Inc | 52,081 | $119.3K | 0.00% | −1,520−2.8% | Reduced |
| Wellington Management Group LLP | 56,398 | $129.2K | 0.00% | −58,814−51.0% | Reduced |
| Barclays PLC | 59,269 | $135.7K | 0.00% | −7,279−10.9% | Reduced |
| Charles Schwab Investment Management Inc | 70,674 | $161.8K | 0.00% | 00.0% | Unchanged |
| Deutsche Bank AG | 72,183 | $165.3K | 0.00% | +72,183 | New |
| Susquehanna International Group, LLP | 72,878 | $166.9K | 0.00% | −49,674−40.5% | Reduced |
| Royal Bank of Canada | 84,135 | $193.0K | 0.00% | −3,154−3.6% | Reduced |
| Stifel Financial Corp | 105,869 | $242.4K | 0.00% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 133,755 | $306.3K | 0.00% | +1,610+1.2% | Added |
| Renaissance Technologies LLC | 133,972 | $306.8K | 0.00% | +1,800+1.4% | Added |
| Morgan Stanley | 145,300 | $332.7K | 0.00% | −39,960−21.6% | Reduced |
| CastleKnight Management LP | 167,433 | $383.4K | 0.02% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 182,781 | $418.6K | 0.00% | −2,980−1.6% | Reduced |
| Northern Trust Corp | 192,469 | $440.8K | 0.00% | −1,373−0.7% | Reduced |
| Empowered Funds, LLC | 198,964 | $455.6K | 0.00% | +24,510+14.0% | Added |
| Citadel Advisors LLC | 268,315 | $614.4K | 0.00% | +121,833+83.2% | Added |
| Bridgeway Capital Management, LLC | 389,964 | $893.0K | 0.02% | +39,510+11.3% | Added |
| State Street Corp | 406,916 | $931.8K | 0.00% | −1,847−0.5% | Reduced |
| Geode Capital Management, LLC | 579,105 | $1.33M | 0.00% | −1,554−0.3% | Reduced |
| Dimensional Fund Advisors LP | 936,414 | $2.14M | 0.00% | −57,500−5.8% | Reduced |
| Vanguard Group Inc | 945,630 | $2.17M | 0.00% | −11,611−1.2% | Reduced |
| BlackRock, Inc. | 1,452,463 | $3.33M | 0.00% | −16,636−1.1% | Reduced |
| Valueworks LLC | 2,038,205 | $4.67M | 1.36% | −350,826−14.7% | Reduced |
| Adage Capital Partners GP, L.L.C. | 4,575,000 | $10.5M | 0.02% | 00.0% | Unchanged |
| Wexford Capital LP | 22,096,068 | $50.6M | 15.24% | 00.0% | Unchanged |
| Millennium Management LLC | 0 | $0 | 0.00% | −21,851−100.0% | Sold out |
| Penbrook Management LLC | 0 | $0 | 0.00% | −13,000−100.0% | Sold out |
| Wealth Enhancement Advisory Services, LLC | 0 | $0 | 0.00% | −12,121−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −8,164−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −2,419−100.0% | Sold out |