MAMMOTH ENERGY SERVICES INC (TUSK) Top Institutional Shareholders
MAMMOTH ENERGY SERVICES INC (TUSK) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $85.38M in TUSK holdings during the latest filing period.
Wexford Capital Lp is currently the largest disclosed institutional shareholder of TUSK tracked by InsiderSet, reporting ownership valued at approximately $54.07M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $67.09M, representing an estimated gain of +24.08% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 92% of the total disclosed TUSK value among the investors covered in this analysis. Major shareholders include Wexford Capital Lp, Adage Capital Partners Gp, L.L.C., Blackrock, Inc., and several other long-term asset managers with concentrated positions in MAMMOTH ENERGY SERVICES INC (TUSK).
This page ranks the largest institutional TUSK shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
86
Total Reported Value
$85.38M
Largest Holder
Wexford Capital Lp
Largest Position
$54.07M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
100
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Wexford Capital Lp | 8.91% | 22,068,212 | $54,067,120 | $67,087,364 | +$13,020,244 | +24.08% | |
| Adage Capital Partners Gp, L.L.C. | 0.02% | 4,575,000 | $11,208,750 | $13,908,000 | +$2,699,250 | +24.08% | |
| Blackrock, Inc. | 0.00% | 1,454,839 | $3,564,356 | $4,422,711 | +$858,355 | +24.08% | |
| Vanguard Capital Management Llc | 0.00% | 819,120 | $2,006,844 | $2,490,125 | +$483,281 | +24.08% | |
| Dimensional Fund Advisors Lp | 0.00% | 686,199 | $1,681,522 | $2,086,045 | +$404,523 | +24.06% | |
| Peapod Lane Capital Llc | 1.24% | 599,805 | $1,513,348 | $1,823,407 | +$310,059 | +20.49% | |
| Geode Capital Management, Llc | 0.00% | 610,926 | $1,496,928 | $1,857,215 | +$360,287 | +24.07% | |
| State Street Corp | 0.00% | 421,922 | $1,033,709 | $1,282,643 | +$248,934 | +24.08% | |
| Bridgeway Capital Management, Llc | 0.02% | 332,313 | $814,167 | $1,010,232 | +$196,065 | +24.08% | |
| Citadel Advisors Llc | 0.00% | 331,367 | $811,849 | $1,007,356 | +$195,507 | +24.08% | |
| Empowered Funds, Llc | 0.00% | 241,313 | $591,217 | $733,592 | +$142,375 | +24.08% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 231,972 | $568,331 | $705,195 | +$136,864 | +24.08% |
| Goldman Sachs Group Inc | 0.00% | 223,489 | $547,549 | $679,407 | +$131,858 | +24.08% | |
| Northern Trust Corp | 0.00% | 187,128 | $458,464 | $568,869 | +$110,405 | +24.08% | |
| Vanguard Fiduciary Trust Co | 0.00% | 170,131 | $416,821 | $517,198 | +$100,377 | +24.08% | |
| Los Angeles Capital Management Llc | 0.00% | 163,259 | $399,984 | $496,307 | +$96,323 | +24.08% | |
| Boston Partners | 0.00% | 154,388 | $378,250 | $469,340 | +$91,090 | +24.08% | |
| Morgan Stanley | 0.00% | 152,723 | $374,172 | $464,278 | +$90,106 | +24.08% | |
| Vanguard Portfolio Management Llc | 0.00% | 140,145 | $343,355 | $426,041 | +$82,686 | +24.08% | |
| Bank Of New York Mellon Corp | 0.00% | 132,539 | $324,720 | $402,919 | +$78,199 | +24.08% | |
| Centiva Capital, Lp | 0.01% | 111,108 | $272,215 | $337,768 | +$65,553 | +24.08% | |
| Stifel Financial Corp | 0.00% | 105,572 | $258,651 | $320,939 | +$62,288 | +24.08% | |
| Osaic Holdings, Inc. | 0.00% | 72,419 | $177,395 | $220,154 | +$42,759 | +24.10% | |
| Wellington Management Group Llp | 0.00% | 68,415 | $167,617 | $207,982 | +$40,365 | +24.08% | |
| Russell Investments Group, Ltd. | 0.00% | 68,030 | $166,673 | $206,811 | +$40,138 | +24.08% | |
| Aqr Capital Management Llc | 0.00% | 66,731 | $163,491 | $202,862 | +$39,371 | +24.08% | |
| Charles Schwab Investment Management Inc | 0.00% | 58,861 | $144,209 | $178,937 | +$34,728 | +24.08% | |
| Squarepoint Ops Llc | 0.00% | 51,620 | $126,469 | $156,925 | +$30,456 | +24.08% | |
| Nuveen, Llc | 0.00% | 36,843 | $90,265 | $112,003 | +$21,738 | +24.08% | |
| Susquehanna International Group, Llp | 0.00% | 36,299 | $88,933 | $110,349 | +$21,416 | +24.08% | |
| Occudo Quantitative Strategies Lp | 0.00% | 29,336 | $83,901 | $89,181 | +$5,280 | +6.29% | |
| Rhumbline Advisers | 0.00% | 32,863 | $80,507 | $99,904 | +$19,397 | +24.09% | |
| Mariner, Llc | 0.00% | 26,873 | $65,844 | $81,694 | +$15,850 | +24.07% | |
| Bank Of America Corp | 0.00% | 25,589 | $62,693 | $77,791 | +$15,098 | +24.08% | |
| Levin Capital Strategies, L.P. | 0.00% | 25,000 | $61,250 | $76,000 | +$14,750 | +24.08% | |
| Jane Street Group, Llc | 0.00% | 22,854 | $55,993 | $69,476 | +$13,483 | +24.08% | |
| Verdad Advisers, Lp | 0.06% | 22,729 | $55,686 | $69,096 | +$13,410 | +24.08% | |
| Steinberganna Wealth Management | 0.02% | 18,360 | $44,982 | $55,814 | +$10,832 | +24.08% | |
| Schonfeld Strategic Advisors Llc | 0.00% | 18,325 | $44,895 | $55,708 | +$10,813 | +24.09% | |
| Creative Planning | 0.00% | 16,950 | $41,528 | $51,528 | +$10,000 | +24.08% | |
| Bnp Paribas Financial Markets | 0.00% | 16,747 | $41,030 | $50,911 | +$9,881 | +24.08% | |
| Sanctuary Advisors, Llc | 0.00% | 16,676 | $40,856 | $50,695 | +$9,839 | +24.08% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | 14,510 | $35,550 | $44,110 | +$8,560 | +24.08% | |
| Sei Investments Co | 0.00% | 13,579 | $33,269 | $41,280 | +$8,011 | +24.08% | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.00% | 12,570 | $30,797 | $38,213 | +$7,416 | +24.08% | |
| Tower Research Capital Llc (Trc) | 0.00% | 12,522 | $30,679 | $38,067 | +$7,388 | +24.08% | |
| Fmr Llc | 0.00% | 12,142 | $29,748 | $36,912 | +$7,164 | +24.08% | |
| Archer Investment Corp | 0.01% | 11,200 | $27,440 | $34,048 | +$6,608 | +24.08% | |
| Valueworks Llc | 0.01% | 10,720 | $26,264 | $32,589 | +$6,325 | +24.08% | |
| New York State Common Retirement Fund | 0.00% | 10,696 | $26,205 | $32,516 | +$6,311 | +24.08% |
Frequently asked questions about TUSK
Who owns the most TUSK stock?
The largest holders of TUSK are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for MAMMOTH ENERGY SERVICES INC (TUSK).
Is TUSK widely held by superinvestors?
Many widely followed stocks like TUSK appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly TUSK is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.