MAMMOTH ENERGY SERVICES, INC. - TUSK

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q4 2025 · Compare: Q3 2025
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
WEXFORD CAPITAL LP History No change 22,096,068 40,877 7.88% 7.27% 1 0 0.0% Q4 2025 Feb 13, 2026
ADAGE CAPITAL PARTNERS GP, L.L.C. History No change 4,575,000 8,463 0.01% 0.02% 2 0 0.0% Q4 2025 Feb 17, 2026
BlackRock, Inc. History Added to 1,473,044 2,725 0.0% 0.0% 3 +20,581 1.42% Q4 2025 Feb 12, 2026
VANGUARD GROUP INC History Added to 1,022,411 1,891 0.0% 0.0% 4 +76,781 8.12% Q4 2025 Jan 29, 2026
DIMENSIONAL FUND ADVISORS LP History Reduced 699,678 1,294 0.0% 0.0% 5 -236,736 -25.28% Q4 2025 Feb 12, 2026
GEODE CAPITAL MANAGEMENT, LLC History Added to 585,719 1,083 0.0% 0.0% 6 +6,614 1.14% Q4 2025 Feb 09, 2026
BRIDGEWAY CAPITAL MANAGEMENT, LLC History Added to 409,991 758 0.02% 0.02% 7 +20,027 5.14% Q4 2025 Feb 17, 2026
STATE STREET CORP History Added to 408,484 755 0.0% 0.0% 8 +1,568 0.39% Q4 2025 Feb 13, 2026
MORGAN STANLEY History Added to 292,698 541 0.0% 0.0% 9 +147,398 101.44% Q4 2025 Feb 13, 2026
Russell Investments Group, Ltd. History Added to 247,491 457 0.0% 0.0% 10 +245,400 11736.01% Q4 2025 Feb 17, 2026
CITADEL ADVISORS LLC History Reduced 220,111 407 0.0% 0.0% 11 -71,304 -24.47% Q4 2025 Feb 17, 2026
Empowered Funds, LLC History Added to 218,991 405 0.01% 0.0% 12 +20,027 10.07% Q4 2025 Feb 18, 2026
RENAISSANCE TECHNOLOGIES LLC History Added to 186,072 344 0.0% 0.0% 13 +52,100 38.89% Q4 2025 Feb 12, 2026
NORTHERN TRUST CORP History Reduced 167,845 310 0.0% 0.0% 14 -24,624 -12.79% Q4 2025 Feb 17, 2026
JPMORGAN CHASE & CO History Reduced 165,984 307 0.0% 0.0% 15 -16,797 -9.19% Q4 2025 Feb 11, 2026
Bank of New York Mellon Corp History Reduced 132,674 245 0.0% 0.0% 16 -1,081 -0.81% Q4 2025 Feb 10, 2026
ACADIAN ASSET MANAGEMENT LLC History Added to 106,892 195 0.0% 0.0% 18 +66,650 165.62% Q4 2025 Feb 10, 2026
STIFEL FINANCIAL CORP History Reduced 105,572 195 0.0% 0.0% 17 -297 -0.28% Q4 2025 Feb 13, 2026
Corient Private Wealth LLC History New 97,902 181 0.0% 19 +97,902 New Q4 2025 Mar 09, 2026
GOLDMAN SACHS GROUP INC History Added to 89,944 166 0.0% 0.0% 20 +37,863 72.7% Q4 2025 Mar 25, 2026
OSAIC HOLDINGS, INC. History Added to 79,686 147 0.0% 0.0% 21 +48,583 156.2% Q4 2025 Feb 17, 2026
Squarepoint Ops LLC History New 76,164 140 0.0% 22 +76,164 New Q4 2025 Feb 13, 2026
LANDSCAPE CAPITAL MANAGEMENT, L.L.C. History New 72,619 134 0.01% 23 +72,619 New Q4 2025 Feb 13, 2026
FRANKLIN RESOURCES INC History Added to 72,088 133 0.0% 0.0% 24 +56,297 356.51% Q4 2025 Feb 11, 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC History No change 70,674 130 0.0% 0.0% 25 0 0.0% Q4 2025 Feb 13, 2026
Quadrature Capital Ltd History New 65,875 121 0.0% 26 +65,875 New Q4 2025 Feb 17, 2026
WELLINGTON MANAGEMENT GROUP LLP History No change 56,398 104 0.0% 0.0% 27 0 0.0% Q4 2025 Feb 17, 2026
XTX Topco Ltd History Added to 45,235 83 0.0% 0.0% 28 +20,153 80.35% Q4 2025 Feb 17, 2026
Centiva Capital, LP History New 41,317 76 0.0% 29 +41,317 New Q4 2025 Feb 13, 2026
JANE STREET GROUP, LLC History Reduced 39,652 73 0.0% 0.0% 30 -12,151 -23.46% Q4 2025 Feb 12, 2026
BARCLAYS PLC History Reduced 38,064 70 0.0% 0.0% 31 -21,205 -35.78% Q4 2025 Feb 13, 2026
Nuveen, LLC History No change 36,843 68 0.0% 0.0% 32 0 0.0% Q4 2025 Feb 12, 2026
RHUMBLINE ADVISERS History Reduced 32,643 60 0.0% 0.0% 33 -2,138 -6.15% Q4 2025 Feb 13, 2026
MARSHALL WACE, LLP History Reduced 30,801 56 0.0% 0.0% 34 -13,716 -30.81% Q4 2025 Feb 13, 2026
WELLS FARGO & COMPANY/MN History Added to 27,501 50 0.0% 0.0% 35 +8,598 45.48% Q4 2025 Feb 13, 2026
BANK OF AMERICA CORP /DE/ History Added to 22,072 40 0.0% 0.0% 36 +10,241 86.56% Q4 2025 Feb 17, 2026
NewEdge Advisors, LLC History Reduced 20,498 37 0.0% 0.0% 37 -4,996 -19.6% Q4 2025 Feb 18, 2026
Virtu Financial LLC History Added to 17,973 33 0.0% 0.0% 38 +3,825 27.04% Q4 2025 Feb 23, 2026
UBS Group AG History Reduced 17,614 32 0.0% 0.0% 39 -2,854 -13.94% Q4 2025 Jan 29, 2026
BNP PARIBAS FINANCIAL MARKETS History Added to 17,014 31 0.0% 0.0% 40 +1,544 9.98% Q4 2025 Feb 10, 2026
Point72 Asset Management, L.P. History New 14,925 27 0.0% 41 +14,925 New Q4 2025 Feb 17, 2026
STEINBERGANNA WEALTH MANAGEMENT History Reduced 13,615 25 0.01% 0.03% 43 -10,650 -43.89% Q4 2025 Jan 26, 2026
PRICE T ROWE ASSOCIATES INC /MD/ History No change 13,385 25 0.0% 0.0% 42 0 0.0% Q4 2025 Feb 17, 2026
VALUEWORKS LLC History Reduced 12,775 23 0.01% 1.36% 44 -2,025,430 -99.37% Q4 2025 Feb 13, 2026
Creative Planning History New 12,106 22 0.0% 45 +12,106 New Q4 2025 Feb 17, 2026
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. History Added to 12,298 22 0.0% 0.0% 46 +352 2.95% Q4 2025 Feb 17, 2026
ALLIANCEBERNSTEIN L.P. History No change 11,390 21 0.0% 0.0% 47 0 0.0% Q4 2025 Feb 17, 2026
FMR LLC History Reduced 11,106 20 0.0% 0.0% 48 -1,540 -12.18% Q4 2025 Feb 17, 2026
AQR CAPITAL MANAGEMENT LLC History Reduced 11,255 20 0.0% 0.0% 49 -44 -0.39% Q4 2025 Feb 17, 2026
Archer Investment Corp History No change 11,200 20 0.0% 0.01% 50 0 0.0% Q4 2025 Jan 30, 2026
Invesco Ltd. History Reduced 10,710 19 0.0% 0.0% 52 -23 -0.21% Q4 2025 Feb 19, 2026
NEW YORK STATE COMMON RETIREMENT FUND History No change 10,696 19 0.0% 0.0% 51 0 0.0% Q4 2025 Feb 12, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP History Reduced 10,264 18 0.0% 0.0% 53 -82,514 -88.94% Q4 2025 Feb 17, 2026
Police & Firemen's Retirement System of New Jersey History No change 9,637 17 0.0% 0.0% 54 0 0.0% Q4 2025 Feb 13, 2026
Tower Research Capital LLC (TRC) History Added to 5,551 10 0.0% 0.0% 55 +681 13.98% Q4 2025 Feb 17, 2026
PNC FINANCIAL SERVICES GROUP, INC. History Reduced 3,622 6 0.0% 0.0% 56 -123 -3.28% Q4 2025 Feb 06, 2026
Legal & General Group Plc History No change 2,179 4 0.0% 0.0% 57 0 0.0% Q4 2025 Feb 09, 2026
Ameritas Investment Partners, Inc. History No change 1,924 3 0.0% 0.0% 58 0 0.0% Q4 2025 Feb 11, 2026
Sterling Capital Management LLC History No change 1,674 3 0.0% 0.0% 59 0 0.0% Q4 2025 Feb 13, 2026
ROYAL BANK OF CANADA History New 1,100 2 0.0% 60 +1,100 New Q4 2025 Feb 17, 2026
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM History Reduced 1,487 2 0.0% 0.0% 61 -275 -15.61% Q4 2025 Feb 17, 2026
CITIGROUP INC History Reduced 549 1 0.0% 0.0% 62 -178 -24.48% Q4 2025 Feb 13, 2026
AMALGAMATED BANK History Reduced 762 1 0.0% 0.0% 63 -23 -2.93% Q4 2025 Feb 05, 2026
CastleKnight Management LP History Closed out 0 0 0.01% -167,433 -100.0% Q3 2025 Nov 14, 2025
DEUTSCHE BANK AG\ History Closed out 0 0 0.0% -72,183 -100.0% Q3 2025 Nov 13, 2025
NBC SECURITIES, INC. History Closed out 0 0 0.01% -36,200 -100.0% Q3 2025 Nov 14, 2025
ROYCE & ASSOCIATES LP History Closed out 0 0 0.0% -17,954 -100.0% Q3 2025 Nov 12, 2025
HRT FINANCIAL LP History Closed out 0 0 0.0% -15,076 -100.0% Q3 2025 Nov 14, 2025
INTECH INVESTMENT MANAGEMENT LLC History Closed out 0 0 0.0% -12,175 -100.0% Q3 2025 Nov 12, 2025
Union Bancaire Privee, UBP SA History Closed out 0 0 0.0% -4,230 -100.0% Q3 2025 Oct 07, 2025
Advisory Services Network, LLC History Closed out 0 0 0.0% -500 -100.0% Q3 2025 Nov 18, 2025
NISA INVESTMENT ADVISORS, LLC History Closed out 0 0 -431 -100.0% Q3 2025 Oct 23, 2025
CWM, LLC History Reduced 265 0 0.0% -388 -59.42% Q4 2025 Jan 26, 2026
Westside Investment Management, Inc. History New 187 0 +187 New Q4 2025 Jan 23, 2026
Transamerica Financial Advisors, LLC History Reduced 31 0 -125 -80.13% Q4 2025 Feb 13, 2026
Arax Advisory Partners History Closed out 0 0 -70 -100.0% Q3 2025 Nov 14, 2025
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO History New 28 0 +28 New Q4 2025 Feb 10, 2026
Clearstead Advisors, LLC History Closed out 0 0 -11 -100.0% Q3 2025 Nov 10, 2025
EverSource Wealth Advisors, LLC History Added to 8 0 +4 100.0% Q4 2025 Feb 06, 2026
True Wealth Design, LLC History Reduced 4 0 -4 -50.0% Q4 2025 Jan 08, 2026
IFP Advisors, Inc History Added to 31 0 +1 3.33% Q4 2025 Feb 06, 2026
SBI Securities Co., Ltd. History No change 120 0 0 0.0% Q4 2025 Feb 03, 2026
Optiver Holding B.V. History No change 328 0 0 0.0% Q4 2025 Feb 17, 2026