TUSK
Mammoth Energy Services, Inc.
$2.85
+0.01 (+0.35%)
At close · Jul 16
Market Cap
$137.29M
Shares
48,170,647
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
The Jun 30, 2026 filing window is
still open — showing the latest known positions. Funds that have not filed yet
carry their prior-quarter positions; a fund that filed without this stock counts
as sold out.
Holders: 91
Total Value: $86,223,585
Total Shares: 35,132,475
Institutional Ownership Trend
26 quarters
Holder Concentration
Across 89 13F filersTop Holder
63.1%
of institutional value
Top 5
84.7%
of institutional value
Top 10
91.3%
of institutional value
HHI
4,199
Highly concentrated
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Small WEXFORD CAPITAL LP | $54,067,119 | 62.71% | 22,068,212 | Shares | Sole | 2026-05-15 | ||||
| Large ADAGE CAPITAL PARTNERS GP, L.L.C. | $11,208,750 | 13.00% | 4,575,000 | Shares | Sole | 2026-05-15 | ||||
| Mega BlackRock, Inc. | $3,564,353 | 4.13% | 1,454,839 | Shares | Sole | 2026-05-13 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $2,006,844 | 2.33% | 819,120 | Shares | Defined | 2026-05-15 | ||||
| Mega DIMENSIONAL FUND ADVISORS LP | $1,681,186 | 1.95% | 686,199 | Shares | Sole | 2026-05-07 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $1,496,768 | 1.74% | 610,926 | Shares | Defined | 2026-05-15 | ||||
| Small Peapod Lane Capital LLC | $1,469,522 | 1.70% | 599,805 | Shares | Sole | 2026-05-04 | ||||
| Mega STATE STREET CORP | $1,033,708 | 1.20% | 421,922 | Shares | Defined | 2026-05-15 | ||||
| Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC | $814,166 | 0.94% | 332,313 | Shares | Sole | 2026-05-15 | ||||
| Mega CITADEL ADVISORS LLC | $811,849 | 0.94% | 331,367 | Shares | Defined | 2026-05-15 | ||||
| Large Empowered Funds, LLC | $591,216 | 0.69% | 241,313 | Shares | Other | 2026-05-15 | ||||
| Large RENAISSANCE TECHNOLOGIES LLC | $568,331 | 0.66% | 231,972 | Shares | Sole | 2026-05-14 | ||||
| Mega GOLDMAN SACHS GROUP INC | $547,546 | 0.64% | 223,489 | Shares | Defined | 2026-05-15 | ||||
| Large ACADIAN ASSET MANAGEMENT LLC | $500,057 | 0.58% | 204,105 | Shares | Defined | 2026-05-13 | ||||
| Mega NORTHERN TRUST CORP Bank | $458,461 | 0.53% | 187,128 | Shares | Defined | 2026-05-14 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $416,820 | 0.48% | 170,131 | Shares | Defined | 2026-05-08 | ||||
| Large LOS ANGELES CAPITAL MANAGEMENT LLC | $399,984 | 0.46% | 163,259 | Shares | Sole | 2026-05-08 | ||||
| Large Boston Partners | $378,250 | 0.44% | 154,388 | Shares | Defined | 2026-05-11 | ||||
| Mega MORGAN STANLEY | $374,169 | 0.43% | 152,723 | Shares | Defined | 2026-05-15 | ||||
| Micro Marquette Asset Management, LLC | $356,934 | 0.41% | 109,826 | Shares | Sole | 2026-07-09 | ||||
| Mega Bank of New York Mellon Corp Bank | $324,720 | 0.38% | 132,539 | Shares | Defined | 2026-05-05 | ||||
| Large Centiva Capital, LP | $272,214 | 0.32% | 111,108 | Shares | Sole | 2026-05-14 | ||||
| Large STIFEL FINANCIAL CORP | $258,651 | 0.30% | 105,572 | Shares | Defined | 2026-05-12 | ||||
| Small FNY Investment Advisers, LLC | $248,563 | 0.29% | 76,481 | Shares | Sole | 2026-07-08 | ||||
| Large OSAIC HOLDINGS, INC. | $177,426 | 0.21% | 72,419 | Shares | Defined | 2026-05-15 | ||||
| Mega WELLINGTON MANAGEMENT GROUP LLP | $167,616 | 0.19% | 68,415 | Shares | Defined | 2026-05-15 | ||||
| Large Russell Investments Group, Ltd. | $166,673 | 0.19% | 68,030 | Shares | Defined | 2026-05-08 | ||||
| Mega AQR CAPITAL MANAGEMENT LLC | $163,489 | 0.19% | 66,731 | Shares | Other | 2026-05-15 | ||||
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $144,209 | 0.17% | 58,861 | Shares | Sole | 2026-05-15 | ||||
| Large Squarepoint Ops LLC | $126,469 | 0.15% | 51,620 | Shares | Defined | 2026-05-15 | ||||
| Mega Nuveen, LLC | $90,264 | 0.10% | 36,843 | Shares | Defined | 2026-04-30 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $88,932 | 0.10% | 36,299 | Shares | Other | 2026-05-15 | ||||
| Mega RHUMBLINE ADVISERS | $80,514 | 0.09% | 32,863 | Shares | Sole | 2026-05-12 | ||||
| Mid OCCUDO QUANTITATIVE STRATEGIES LP | $71,873 | 0.08% | 29,336 | Shares | Sole | 2026-05-15 | ||||
| Large Mariner, LLC | $65,838 | 0.08% | 26,873 | Shares | Sole | 2026-05-13 | ||||
| Mega BANK OF AMERICA CORP /DE/ Bank | $62,693 | 0.07% | 25,589 | Shares | Defined | 2026-05-18 | ||||
| Mid LEVIN CAPITAL STRATEGIES, L.P. | $61,250 | 0.07% | 25,000 | Shares | Other | 2026-05-13 | ||||
| Mega JANE STREET GROUP, LLC | $55,991 | 0.06% | 22,854 | Shares | Defined | 2026-05-12 | ||||
| Micro Verdad Advisers, LP | $55,686 | 0.06% | 22,729 | Shares | Sole | 2026-05-15 | ||||
| Small STEINBERGANNA WEALTH MANAGEMENT | $44,982 | 0.05% | 18,360 | Shares | Sole | 2026-04-15 | ||||
| Large Schonfeld Strategic Advisors LLC | $44,896 | 0.05% | 18,325 | Shares | Sole | 2026-05-15 | ||||
| Large Creative Planning | $41,527 | 0.05% | 16,950 | Shares | Sole | 2026-05-12 | ||||
| Mega BNP PARIBAS ARBITRAGE, SA | $41,030 | 0.05% | 16,747 | Shares | Defined | 2026-05-12 | ||||
| Mid Sanctuary Advisors, LLC | $40,856 | 0.05% | 16,676 | Shares | Sole | 2026-05-05 | ||||
| Large Connor, Clark & Lunn Investment Management Ltd. | $35,549 | 0.04% | 14,510 | Shares | Sole | 2026-05-11 | ||||
| Mid GSA CAPITAL PARTNERS LLP | $34,077 | 0.04% | 13,909 | Shares | Sole | 2026-05-08 | ||||
| Large SEI INVESTMENTS CO | $33,268 | 0.04% | 13,579 | Shares | Sole | 2026-05-13 | ||||
| Mega PRICE T ROWE ASSOCIATES INC /MD/ | $32,793 | 0.04% | 13,385 | Shares | Defined | 2026-05-15 | ||||
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund | $30,796 | 0.04% | 12,570 | Shares | Defined | 2026-05-15 | ||||
| Mid Tower Research Capital LLC (TRC) | $30,678 | 0.04% | 12,522 | Shares | Defined | 2026-05-15 | ||||
| Mega FMR LLC | $29,747 | 0.03% | 12,142 | Shares | Defined | 2026-05-15 | ||||
| Mega JANE STREET GROUP, LLC | $29,155 | 0.03% | 11,900 | Call | Defined | 2026-05-12 | ||||
| Small Archer Investment Corp | $27,440 | 0.03% | 11,200 | Shares | Sole | 2026-05-04 | ||||
| Mega ALLIANCEBERNSTEIN L.P. | $26,827 | 0.03% | 10,950 | Shares | Defined | 2026-05-15 | ||||
| Small VALUEWORKS LLC | $26,264 | 0.03% | 10,720 | Shares | Sole | 2026-05-15 | ||||
| Large NEW YORK STATE COMMON RETIREMENT FUND Pension | $26,205 | 0.03% | 10,696 | Shares | Sole | 2026-05-06 | ||||
| Mega CITADEL ADVISORS LLC | $25,970 | 0.03% | 10,600 | Put | Defined | 2026-05-15 | ||||
| Mega JPMORGAN CHASE & CO | $25,173 | 0.03% | 10,275 | Shares | Defined | 2026-05-13 | ||||
| Large Police & Firemen's Retirement System of New Jersey Pension | $23,610 | 0.03% | 9,637 | Shares | Defined | 2026-04-29 | ||||
| Mega WELLS FARGO & COMPANY/MN | $23,199 | 0.03% | 9,469 | Shares | Defined | 2026-05-11 | ||||
| Mega Vanguard Global Advisers, LLC | $21,496 | 0.02% | 8,774 | Shares | Defined | 2026-05-08 | ||||
| Mega UBS Group AG | $18,783 | 0.02% | 7,667 | Shares | Defined | 2026-05-05 | ||||
| Large CWM, LLC | $14,192 | 0.02% | 5,793 | Shares | Sole | 2026-05-14 | ||||
| Mega PNC FINANCIAL SERVICES GROUP, INC. | $14,013 | 0.02% | 5,720 | Shares | Defined | 2026-05-08 | ||||
| Mega BARCLAYS PLC | $13,673 | 0.02% | 5,581 | Shares | Defined | 2026-05-15 | ||||
| Mid SIMPLEX TRADING, LLC | $13,568 | 0.02% | 5,538 | Shares | Sole | 2026-05-14 | ||||
| Mega Legal & General Group Plc | $5,338 | 0.01% | 2,179 | Shares | Defined | 2026-05-08 | ||||
| Mid Ameritas Investment Partners, Inc. | $4,713 | 0.01% | 1,924 | Shares | Other | 2026-05-13 | ||||
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $3,469 | 0.00% | 1,416 | Shares | Defined | 2026-05-13 | ||||
| Mega CITIGROUP INC | $2,760 | 0.00% | 1,127 | Shares | Defined | 2026-05-11 | ||||
| Mid Sterling Capital Management LLC | $1,967 | 0.00% | 803 | Shares | Sole | 2026-04-22 | ||||
| Mid Allianz SE | $1,960 | 0.00% | 800 | Shares | Defined | 2026-05-11 | ||||
| Mid Advisory Services Network, LLC | $1,225 | 0.00% | 500 | Shares | Sole | 2026-05-15 | ||||
| Mid Allworth Financial LP | $494 | 0.00% | 202 | Shares | Sole | 2026-05-15 | ||||
| Mid Optiver Holding B.V. | $490 | 0.00% | 200 | Shares | Defined | 2026-05-15 | ||||
| Small Westside Investment Management, Inc. | $458 | 0.00% | 187 | Shares | Sole | 2026-05-04 | ||||
| Mid MAI Capital Management | $411 | 0.00% | 168 | Shares | Sole | 2026-05-15 | ||||
| Mid ROTHSCHILD INVESTMENT LLC | $325 | 0.00% | 133 | Shares | Sole | 2026-05-07 | ||||
| Mid SBI Securities Co., Ltd. Broker-Dealer | $247 | 0.00% | 101 | Shares | Defined | 2026-04-28 | ||||
| Mid EverSource Wealth Advisors, LLC | $204 | 0.00% | 84 | Shares | Sole | 2026-05-18 | ||||
| Small Basecamp Wealth Advisors LLC | $139 | 0.00% | 57 | Shares | Sole | 2026-06-24 | ||||
| Micro True Wealth Design, LLC | $120 | 0.00% | 37 | Shares | Sole | 2026-07-16 | ||||
| Small Root Financial Partners, LLC | $78 | 0.00% | 32 | Shares | Sole | 2026-04-24 | ||||
| Small Transamerica Financial Advisors, LLC | $75 | 0.00% | 31 | Shares | Sole | 2026-05-15 | ||||
| Small Essential Partners LLC | $49 | 0.00% | 20 | Shares | Sole | 2026-05-21 | ||||
| Small SJS Investment Consulting Inc. | $41 | 0.00% | 17 | Shares | Defined | 2026-04-23 | ||||
| Mid Arax Advisory Partners | $41 | 0.00% | 17 | Shares | Sole | 2026-05-13 | ||||
| Micro Wealth Preservation Advisors, LLC | $36 | 0.00% | 15 | Shares | Sole | 2026-05-15 | ||||
| Mid Farther Finance Advisors, LLC | $34 | 0.00% | 14 | Shares | Sole | 2026-04-07 | ||||
| Small JPL Wealth Management, LLC | $22 | 0.00% | 9 | Shares | Sole | 2026-05-08 | ||||
| Mid IFP Advisors, Inc | $12 | 0.00% | 5 | Shares | Sole | 2026-04-13 | ||||
| Small Caitong International Asset Management Co., Ltd | $4 | 0.00% | 2 | Shares | Sole | 2026-05-11 | ||||
| Mega ROYAL BANK OF CANADA Bank | $2 | 0.00% | 1 | Shares | Sole | 2026-05-15 | ||||
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