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 2025
Institutional positions in Mammoth Energy Services, Inc. as of Dec 31, 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
- 72
- −5 vs. Q3 2025
- Shares held
- 34.4M
- −1.69M (−4.7%) vs. Q3 2025
- Total value
- $63.6M
- −$19.0M (−23.0%) vs. Q3 2025
- New holders
- 9
- 22 more added
- Sold out
- 14
- 26 more reduced
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Mammoth Energy Services, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| CWM, LLC | 265 | $0 | 0.00% | −388−59.4% | Reduced |
| True Wealth Design, LLC | 4 | $8 | 0.00% | −4−50.0% | Reduced |
| EverSource Wealth Advisors, LLC | 8 | $15 | 0.00% | +4+100.0% | Added |
| Northwestern Mutual Wealth Management Co | 28 | $52 | 0.00% | +28 | New |
| Transamerica Financial Advisors, Inc. | 31 | $57 | 0.00% | −125−80.1% | Reduced |
| IFP Advisors, Inc | 31 | $57 | 0.00% | +1+3.3% | Added |
| SBI Securities Co., Ltd. | 120 | $222 | 0.00% | 00.0% | Unchanged |
| Westside Investment Management, Inc. | 187 | $346 | 0.00% | +187 | New |
| Optiver Holding B.V. | 328 | $607 | 0.00% | 00.0% | Unchanged |
| Amalgamated Bank | 762 | $1.00K | 0.00% | −23−2.9% | Reduced |
| Citigroup Inc | 549 | $1.02K | 0.00% | −178−24.5% | Reduced |
| Royal Bank of Canada | 1,100 | $2.00K | 0.00% | −83,035−98.7% | Reduced |
| California State Teachers Retirement System | 1,487 | $2.75K | 0.00% | −275−15.6% | Reduced |
| Sterling Capital Management LLC | 1,674 | $3.10K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 1,924 | $3.56K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 2,179 | $4.03K | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 3,622 | $6.70K | 0.00% | −123−3.3% | Reduced |
| Tower Research Capital LLC (TRC) | 5,551 | $10.3K | 0.00% | +681+14.0% | Added |
| Police & Firemen's Retirement System of New Jersey | 9,637 | $17.8K | 0.00% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 10,264 | $19.0K | 0.00% | −62,614−85.9% | Reduced |
| New York State Common Retirement Fund | 10,696 | $19.8K | 0.00% | 00.0% | Unchanged |
| Invesco Ltd. | 10,710 | $19.8K | 0.00% | −23−0.2% | Reduced |
| FMR LLC | 11,106 | $20.5K | 0.00% | −1,540−12.2% | Reduced |
| Archer Investment Corp | 11,200 | $20.7K | 0.00% | 00.0% | Unchanged |
| AQR Capital Management LLC | 11,255 | $20.8K | 0.00% | −44−0.4% | Reduced |
| Alliancebernstein L.P. | 11,390 | $21.1K | 0.00% | 00.0% | Unchanged |
| Creative Planning | 12,106 | $22.4K | 0.00% | +12,106 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 12,298 | $22.8K | 0.00% | +352+2.9% | Added |
| Valueworks LLC | 12,775 | $23.6K | 0.01% | −2,025,430−99.4% | Reduced |
| Price T Rowe Associates Inc | 13,385 | $25.0K | 0.00% | 00.0% | Unchanged |
| Steinberganna Wealth Management | 13,615 | $25.2K | 0.01% | −10,650−43.9% | Reduced |
| Point72 Asset Management, L.P. | 14,925 | $27.6K | 0.00% | +14,925 | New |
| BNP Paribas Arbitrage, SA | 17,014 | $31.5K | 0.00% | +1,544+10.0% | Added |
| UBS Group AG | 17,614 | $32.6K | 0.00% | −2,854−13.9% | Reduced |
| Virtu Financial LLC | 17,973 | $33.0K | 0.00% | +3,825+27.0% | Added |
| GWM Advisors LLC | 20,498 | $37.9K | 0.00% | −4,996−19.6% | Reduced |
| Bank of America Corp | 22,072 | $40.8K | 0.00% | +10,241+86.6% | Added |
| Wells Fargo & Company | 27,501 | $50.9K | 0.00% | +8,598+45.5% | Added |
| Marshall Wace, LLP | 30,801 | $57.0K | 0.00% | −13,716−30.8% | Reduced |
| Rhumbline Advisers | 32,643 | $60.4K | 0.00% | −2,138−6.1% | Reduced |
| Nuveen, LLC | 36,843 | $68.2K | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 38,064 | $70.4K | 0.00% | −21,205−35.8% | Reduced |
| Jane Street Group, LLC | 39,652 | $73.4K | 0.00% | −12,151−23.5% | Reduced |
| Centiva Capital, LP | 41,317 | $76.4K | 0.00% | +41,317 | New |
| XTX Topco Ltd | 45,235 | $83.7K | 0.00% | +20,153+80.3% | Added |
| Wellington Management Group LLP | 56,398 | $104.3K | 0.00% | 00.0% | Unchanged |
| Quadrature Capital Ltd | 65,875 | $121.9K | 0.00% | +65,875 | New |
| Charles Schwab Investment Management Inc | 70,674 | $130.7K | 0.00% | 00.0% | Unchanged |
| Franklin Resources Inc | 72,088 | $133.4K | 0.00% | +56,297+356.5% | Added |
| Landscape Capital Management, L.L.C. | 72,619 | $134.3K | 0.01% | +72,619 | New |
| Squarepoint Ops LLC | 76,164 | $140.9K | 0.00% | +76,164 | New |
| Advisor Group Holdings, Inc. | 79,686 | $147.4K | 0.00% | +48,583+156.2% | Added |
| Goldman Sachs Group Inc | 89,944 | $166.4K | 0.00% | +37,863+72.7% | Added |
| CI Private Wealth, LLC | 97,902 | $181.1K | 0.00% | +97,902 | New |
| Acadian Asset Management LLC | 106,892 | $195.0K | 0.00% | +66,650+165.6% | Added |
| Stifel Financial Corp | 105,572 | $195.3K | 0.00% | −297−0.3% | Reduced |
| Bank of New York Mellon Corp | 132,674 | $245.4K | 0.00% | −1,081−0.8% | Reduced |
| JPMorgan Chase & Co | 165,984 | $307.1K | 0.00% | −16,797−9.2% | Reduced |
| Northern Trust Corp | 167,845 | $310.5K | 0.00% | −24,624−12.8% | Reduced |
| Renaissance Technologies LLC | 186,072 | $344.2K | 0.00% | +52,100+38.9% | Added |
| Empowered Funds, LLC | 218,991 | $405.1K | 0.01% | +20,027+10.1% | Added |
| Citadel Advisors LLC | 220,111 | $407.2K | 0.00% | −48,204−18.0% | Reduced |
| Russell Investments Group, Ltd. | 247,491 | $457.9K | 0.00% | +245,400+11,736.0% | Added |
| Morgan Stanley | 292,698 | $541.5K | 0.00% | +147,398+101.4% | Added |
| State Street Corp | 408,484 | $755.7K | 0.00% | +1,568+0.4% | Added |
| Bridgeway Capital Management, LLC | 409,991 | $758.5K | 0.02% | +20,027+5.1% | Added |
| Geode Capital Management, LLC | 585,719 | $1.08M | 0.00% | +6,614+1.1% | Added |
| Dimensional Fund Advisors LP | 699,678 | $1.29M | 0.00% | −236,736−25.3% | Reduced |
| Vanguard Group Inc | 1,022,411 | $1.89M | 0.00% | +76,781+8.1% | Added |
| BlackRock, Inc. | 1,473,044 | $2.73M | 0.00% | +20,581+1.4% | Added |
| Adage Capital Partners GP, L.L.C. | 4,575,000 | $8.46M | 0.01% | 00.0% | Unchanged |
| Wexford Capital LP | 22,096,068 | $40.9M | 10.51% | 00.0% | Unchanged |
| CastleKnight Management LP | 0 | $0 | 0.00% | −167,433−100.0% | Sold out |
| Deutsche Bank AG | 0 | $0 | 0.00% | −72,183−100.0% | Sold out |
| NBC Securities, Inc. | 0 | $0 | 0.00% | −36,200−100.0% | Sold out |
| NJ State Employees Deferred Compensation Plan | 0 | $0 | 0.00% | −24,000−100.0% | Sold out |
| Royce & Associates LP | 0 | $0 | 0.00% | −17,954−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −15,076−100.0% | Sold out |
| Intech Investment Management LLC | 0 | $0 | 0.00% | −12,175−100.0% | Sold out |
| Union Bancaire Privee, UBP SA | 0 | $0 | 0.00% | −4,230−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| Nisa Investment Advisors, LLC | 0 | $0 | 0.00% | −431−100.0% | Sold out |
| SRS Capital Advisors, Inc. | 0 | $0 | 0.00% | −70−100.0% | Sold out |
| Clearstead Advisors, LLC | 0 | $0 | 0.00% | −11−100.0% | Sold out |
| Essential Partners LLC | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Allworth Financial LP | 0 | $0 | 0.00% | −1−100.0% | Sold out |