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