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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.

Q2 2021 vs. Q1 2021

How the institutions holding Mammoth Energy Services, Inc. changed between Q1 2021 and Q2 2021.

All holders in Q2 2021All holders in Q1 2021

13F holders of TUSK: Q1 2021 compared with Q2 2021
MeasureQ1 2021Q2 2021Change
Holders5452−2
Shares28.8M29.2M+376.4K (+1.3%)
Value$153.3M$134.0M−$19.3M (−12.6%)

New holders (7)

Institutions that held Mammoth Energy Services, Inc. at the end of Q2 2021 but not at the end of Q1 2021.

Institutions new to TUSK in Q2 2021
InstitutionSharesValue% of portfolio
Royce & Associates LP65,976$303.0K0.00%
Boston Partners47,725$219.0K0.00%
Russell Investments Group, Ltd.40,255$184.0K0.00%
PDT Partners, LLC19,313$89.0K0.01%
HSBC Holdings PLC14,243$64.0K0.00%
Advisory Services Network, LLC500$2.00K0.00%
FMR LLC1$00.00%

Sold out (9)

Institutions that held Mammoth Energy Services, Inc. at the end of Q1 2021 and filed for Q2 2021 without it.

Institutions that sold out of TUSK in Q2 2021
InstitutionShares, Q1 2021Value, Q1 2021
Citadel Advisors LLC40,601$216.0K
Goldman Sachs Group Inc36,871$196.0K
ExodusPoint Capital Management, LP26,542$141.0K
Schonfeld Strategic Advisors LLC12,755$68.0K
HRT Financial LP11,424$60.0K
Pinz Capital Management, LP8,028$43.0K
Citigroup Inc6,197$33.0K
Dorsey Wright & Associates6,190$32.9K
International Assets Investment Management, LLC204$1.00K