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 2025
Institutional positions in Mammoth Energy Services, Inc. as of Jun 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
- 66
- 0 vs. Q1 2025
- Shares held
- 36.4M
- −912.9K (−2.4%) vs. Q1 2025
- Total value
- $101.9M
- +$25.8M (+33.9%) vs. Q1 2025
- New holders
- 6
- 30 more added
- Sold out
- 6
- 18 more reduced
Compare with Q1 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, Q2 2025
Shares, value and share of portfolio for each institution holding Mammoth Energy Services, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Essential Partners LLC | 3 | $8 | 0.00% | +3 | New |
| EverSource Wealth Advisors, LLC | 4 | $11 | 0.00% | 00.0% | Unchanged |
| True Wealth Design, LLC | 12 | $34 | 0.00% | +5+71.4% | Added |
| SBI Securities Co., Ltd. | 122 | $342 | 0.00% | +2+1.7% | Added |
| Sterling Capital Management LLC | 651 | $1.82K | 0.00% | +214+49.0% | Added |
| Amalgamated Bank | 785 | $2.00K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 637 | $2.00K | 0.00% | −4−0.6% | Reduced |
| California State Teachers Retirement System | 1,761 | $4.93K | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 1,817 | $5.09K | 0.00% | +1,683+1,256.0% | Added |
| Ameritas Investment Partners, Inc. | 1,924 | $5.39K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 2,419 | $6.00K | 0.00% | −8,660−78.2% | Reduced |
| Legal & General Group Plc | 2,179 | $6.10K | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 4,087 | $11.4K | 0.00% | +1,783+77.4% | Added |
| Union Bancaire Privee, UBP SA | 4,230 | $12.2K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 7,569 | $21.2K | 0.00% | +2,933+63.3% | Added |
| Group One Trading, L.P. | 8,164 | $22.9K | 0.00% | +2,375+41.0% | Added |
| Citigroup Inc | 9,458 | $26.5K | 0.00% | −7,861−45.4% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 9,637 | $27.0K | 0.00% | +9,637 | New |
| Alliancebernstein L.P. | 10,190 | $28.5K | 0.00% | +10,190 | New |
| New York State Common Retirement Fund | 10,696 | $29.9K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 10,914 | $30.6K | 0.00% | −2,520−18.8% | Reduced |
| Intech Investment Management LLC | 12,080 | $33.8K | 0.00% | −5,793−32.4% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 12,121 | $33.9K | 0.00% | +12,121 | New |
| Archer Investment Corp | 12,200 | $34.2K | 0.01% | 00.0% | Unchanged |
| Penbrook Management LLC | 13,000 | $36.4K | 0.03% | −1,000−7.1% | Reduced |
| Bank of America Corp | 13,069 | $36.6K | 0.00% | −1,108−7.8% | Reduced |
| BNP Paribas Arbitrage, SA | 13,525 | $37.9K | 0.00% | +2,987+28.3% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 13,970 | $39.1K | 0.00% | −624−4.3% | Reduced |
| Wells Fargo & Company | 15,568 | $43.6K | 0.00% | +984+6.7% | Added |
| Jane Street Group, LLC | 17,268 | $48.4K | 0.00% | +5,621+48.3% | Added |
| Millennium Management LLC | 21,851 | $61.2K | 0.00% | −36,823−62.8% | Reduced |
| NJ State Employees Deferred Compensation Plan | 24,000 | $67.2K | 0.01% | 00.0% | Unchanged |
| Acadian Asset Management LLC | 28,563 | $79.0K | 0.00% | +16,852+143.9% | Added |
| Advisor Group Holdings, Inc. | 29,433 | $82.4K | 0.00% | −30,117−50.6% | Reduced |
| Rhumbline Advisers | 31,804 | $89.0K | 0.00% | +7,757+32.3% | Added |
| XTX Topco Ltd | 36,662 | $102.7K | 0.00% | +36,662 | New |
| UBS Group AG | 36,671 | $102.7K | 0.00% | +6,450+21.3% | Added |
| Nuveen, LLC | 36,843 | $103.2K | 0.00% | 00.0% | Unchanged |
| Royce & Associates LP | 41,154 | $115.2K | 0.00% | −1,252,483−96.8% | Reduced |
| Price T Rowe Associates Inc | 43,285 | $122.0K | 0.00% | +16,812+63.5% | Added |
| NBC Securities, Inc. | 44,580 | $124.0K | 0.01% | −12,360−21.7% | Reduced |
| Goldman Sachs Group Inc | 53,601 | $150.1K | 0.00% | −12,987−19.5% | Reduced |
| Marshall Wace, LLP | 57,436 | $160.8K | 0.00% | +57,436 | New |
| Barclays PLC | 66,548 | $186.3K | 0.00% | +17,027+34.4% | Added |
| Charles Schwab Investment Management Inc | 70,674 | $197.9K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 87,289 | $244.0K | 0.00% | +83,379+2,132.5% | Added |
| Stifel Financial Corp | 105,869 | $296.4K | 0.00% | +297+0.3% | Added |
| Wellington Management Group LLP | 115,212 | $322.6K | 0.00% | +53,413+86.4% | Added |
| Susquehanna International Group, LLP | 122,552 | $343.1K | 0.00% | +29,063+31.1% | Added |
| Bank of New York Mellon Corp | 132,145 | $370.0K | 0.00% | +10,896+9.0% | Added |
| Renaissance Technologies LLC | 132,172 | $370.1K | 0.00% | −3,100−2.3% | Reduced |
| Citadel Advisors LLC | 146,482 | $410.1K | 0.00% | −37,589−20.4% | Reduced |
| CastleKnight Management LP | 167,433 | $468.8K | 0.03% | 00.0% | Unchanged |
| Empowered Funds, LLC | 174,454 | $488.5K | 0.01% | +14,769+9.2% | Added |
| Morgan Stanley | 185,260 | $518.7K | 0.00% | +94,026+103.1% | Added |
| JPMorgan Chase & Co | 185,761 | $520.1K | 0.00% | +163,291+726.7% | Added |
| Northern Trust Corp | 193,842 | $542.8K | 0.00% | −9,185−4.5% | Reduced |
| Bridgeway Capital Management, LLC | 350,454 | $981.3K | 0.02% | +14,769+4.4% | Added |
| State Street Corp | 408,763 | $1.14M | 0.00% | +6,400+1.6% | Added |
| Geode Capital Management, LLC | 580,659 | $1.63M | 0.00% | +35,495+6.5% | Added |
| Vanguard Group Inc | 957,241 | $2.68M | 0.00% | +12,706+1.3% | Added |
| Dimensional Fund Advisors LP | 993,914 | $2.78M | 0.00% | −7,290−0.7% | Reduced |
| BlackRock, Inc. | 1,469,099 | $4.11M | 0.00% | +8,302+0.6% | Added |
| Valueworks LLC | 2,389,031 | $6.70M | 2.21% | −419,829−14.9% | Reduced |
| Adage Capital Partners GP, L.L.C. | 4,575,000 | $12.8M | 0.02% | +425,000+10.2% | Added |
| Wexford Capital LP | 22,096,068 | $61.9M | 17.26% | +27,856+0.1% | Added |
| Rangeley Capital, LLC | 0 | $0 | 0.00% | −205,880−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −12,029−100.0% | Sold out |
| PDT Partners, LLC | 0 | $0 | 0.00% | −12,074−100.0% | Sold out |
| Corebridge Financial, Inc. | 0 | $0 | 0.00% | −11,904−100.0% | Sold out |
| Wolverine Trading, LLC | 0 | $0 | 0.00% | −10,872−100.0% | Sold out |
| IFP Advisors, Inc | 0 | $0 | 0.00% | 0 | Sold out |