Skip to content
Disclosery

TUSK MAMMOTH ENERGY SVCS INC

Follow

COM (common), issuer CIK 1679268

91 managers (94 13F filers) reported a position in TUSK shares at 2026-06-30, 26,068,928 shares in all. 28 filers opened a position and 23 filers sold out during the quarter.

Managers
91
13F filers
94
New
28
Added
32
Reduced
24
Sold out
23
Shares held by filers
26,068,928

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
WEXFORD CAPITAL LP12,071,823$39.2M5.38%-9,996,38913F-HRTimeline
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…4,575,000$14.9M0.02%013F-HRTimelineGroup
VANGUARD GROUP INCgroup of 4 filers holding1,230,168$4M+91,998Timeline
Peapod Lane Capital LLC807,804$2.63M1.77%+207,99913F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP691,667$2.25M<0.01%+5,46813F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC506,662$1.65M<0.01%+483,80813F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC452,163$1.47M<0.01%+120,79613F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.407,976$1.33M<0.01%-1,046,86313F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP395,583$1.29M<0.01%new13F-HRTimelineGroup
Johns Hopkins University387,359$1.26M0.08%new13F-HRTimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC332,313$1.08M0.02%013F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…329,821$1.07M<0.01%+261,79113F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC306,028$996K<0.01%-304,89813F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC292,280$950K<0.01%+60,30813F-HRTimeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …290,096$943K<0.01%new13F-HRTimelineGroup
Empowered Funds, LLC241,313$784K<0.01%013F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC177,824$578K<0.01%+111,09313F-HRTimelineGroup
Round Rock Advisors LLC152,841$497K0.06%new13F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY133,560$434K<0.01%-19,16313F-HRTimelineGroup
Centiva Capital, LP130,870$425K0.01%+19,76213F-HRTimeline
GSA CAPITAL PARTNERS LLP129,547$421K0.03%+115,63813F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC124,186$404K<0.01%new13F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC122,050$396K<0.01%-82,05513F-HRTimelineGroup
Marquette Asset Management, LLC109,826$357K0.05%new13F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP105,572$343K<0.01%013F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP101,864$331K<0.01%-320,05813F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/97,046$315K<0.01%+71,45713F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS92,964$302K<0.01%+76,21713F-HRTimelineGroup
FNY Investment Advisers, LLC76,481$248K0.09%new13F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.72,091$234K<0.01%new13F-HRTimelineGroup
Boston Partnersin group Boston Trust Walden Corp68,935$224K<0.01%-85,45313F-HRTimelineGroup
Aster Capital Management (DIFC) Ltd67,570$220K0.05%new13F-HR/ATimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp62,007$202K<0.01%-70,53213F-HRTimelineGroup
Qube Research & Technologies Ltd58,859$191K<0.01%new13F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP58,538$190K<0.01%new13F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP57,180$186K<0.01%-129,94813F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC54,928$179K<0.01%-168,56113F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…49,920$162K<0.01%+13,62113F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd49,261$160K<0.01%new13F-HRTimelineGroup
Walleye Capital LLCin group Walleye Capital LLC49,141$160K<0.01%new13F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…47,486$154K<0.01%-20,92913F-HRTimelineGroup
ALGERT GLOBAL LLC45,997$149K<0.01%new13F-HRTimeline
Quadrature Capital Ltdin group Quadrature Capital Ltd44,015$143K<0.01%new13F-HRTimelineGroup
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC33,706$108K<0.01%new13F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding30,934$101K+21,851Timeline
HRT FINANCIAL LP30,632$99K<0.01%new13F-HRTimeline
Connor, Clark & Lunn Investment Managem…28,581$92.9K<0.01%+14,07113F-HRTimeline
CAPTRUST FINANCIAL ADVISORS26,799$87.1K<0.01%new13F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC25,553$83K<0.01%+19,97213F-HRTimelineGroup
IEQ CAPITAL, LLC24,392$79.3K<0.01%new13F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC22,336$72.6K<0.01%new13F-HRTimelineGroup
Schonfeld Strategic Advisors LLC16,864$54.8K<0.01%-1,46113F-HRTimeline
RHUMBLINE ADVISERS16,609$54K<0.01%-16,25413F-HRTimeline
AXQ CAPITAL, LP13,903$45.2K<0.01%new13F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…13,477$43.8K<0.01%+95513F-HRTimelineGroup
Creative Planningin group Creative Planning13,317$43.3K<0.01%-3,63313F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC13,287$43.1K<0.01%-13,58613F-HRTimelineGroup
Virtu Financial LLCin group Virtu Financial LLC12,793$42K<0.01%new13F-HRTimelineGroup
FMR LLCin group FMR LLC12,531$40.7K<0.01%+38913F-HRTimelineGroup
STEINBERGANNA WEALTH MANAGEMENT11,560$37.6K0.02%-6,80013F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO12,385$36K<0.01%+2,11013F-HRTimelineGroup
PRELUDE CAPITAL MANAGEMENT, LLC10,800$35.1K<0.01%new13F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co10,739$34.9K<0.01%-48,12213F-HRTimelineGroup
Archer Investment Corp8,200$26.6K0.01%-3,00013F-HR/ATimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…7,217$23.5K<0.01%+1,49713F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA4,537$14K<0.01%+4,53613F-HRTimelineGroup
SIMPLEX TRADING, LLC3,457$11.2K<0.01%-2,08113F-HRTimeline
Arax Advisory Partners843$2.74K<0.01%+82613F-HRTimeline
Allworth Financial LP840$2.73K<0.01%+63813F-HRTimeline
Allianz SEin group Allianz SE800$2.6K<0.01%013F-HRTimelineGroup
GROUP ONE TRADING LLC777$2.52K<0.01%new13F-HRTimeline
Integrated Wealth Concepts LLC524$1.71K<0.01%new13F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN300$975<0.01%-9,16913F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…276$898<0.01%+19213F-HRTimelineGroup
ROTHSCHILD INVESTMENT LLC239$777<0.01%+10613F-HRTimeline
Essential Partners LLC212$689<0.01%+19213F-HRTimeline
MCGUIRE CAPITAL ADVISORS INC200$650<0.01%new13F-HRTimeline
Westside Investment Management, Inc.187$608<0.01%013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.150$487<0.01%-72,26913F-HRTimelineGroup
Farther Finance Advisors, LLC107$343<0.01%+9313F-HRTimeline
Basecamp Wealth Advisors LLC79$257<0.01%+2213F-HRTimeline
True Wealth Design, LLC37$121<0.01%+1213F-HRTimeline
Transamerica Financial Advisors, LLCin group Transamerica Financial Adviso…31$100<0.01%013F-HRTimelineGroup
SJS Investment Consulting Inc.30$98<0.01%+1313F-HRTimeline
IFP Advisors, Inc27$88<0.01%+2213F-HRTimeline
Wealth Enhancement Trust Services, Inc.17$55<0.01%new13F-HR/ATimeline
Caitong International Asset Management …10$32<0.01%+813F-HRTimeline
JPL Wealth Management, LLC9$30<0.01%013F-HRTimeline
Fortitude Family Office, LLC7$23<0.01%new13F-HRTimeline
CITIGROUP INCin group CITIGROUP INC1$3<0.01%-1,12613F-HRTimelineGroup
SBI Securities Co., Ltd.1$3<0.01%-10013F-HRTimeline