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Mammoth Energy Services
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Overview Fund Activity

65 hedge funds and large institutions have $76.1M invested in Mammoth Energy Services in 2025 Q1 according to their latest regulatory filings, with 9 funds opening new positions, 20 increasing their positions, 22 reducing their positions, and 9 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
65
Holders Change
-1
Holders Change %
-1.52%
% of All Funds
0.88%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
9
Increased
20
Reduced
22
Closed
9
Calls
$50K
Puts
$89K
Net Calls
-$39K
Net Calls Change
-$198K

Top Buyers

1
Citadel Advisors
Citadel Advisors
Florida
$376K
2
Millennium Management
Millennium Management
New York
$120K
3
NS
NBC Securities
Alabama
$116K
4
Adage Capital Partners
Adage Capital Partners
Massachusetts
$8.47M
5
Susquehanna International Group
Susquehanna International Group
Pennsylvania
$191K

Top Sellers

1
RC
Rangeley Capital
Connecticut
$420K
2
RA
Royce & Associates
New York
$2.64M
3
BCM
Bridgeway Capital Management
Texas
$685K
4
JPMorgan Chase & Co
JPMorgan Chase & Co
New York
$45.8K
5
Goldman Sachs
Goldman Sachs
New York
$136K
Name Holding Trade Value Shares
Change 		Shares
Change %
Group One Trading
51
Group One Trading
Illinois
$11.8K +$11.8K +5,789 New
TRCT
52
Tower Research Capital (TRC)
New York
$9.46K +$2.03K +995 +27%
UBP
53
Union Bancaire Privee
Switzerland
$8.93K – – –
Royal Bank of Canada
54
Royal Bank of Canada
Ontario, Canada
$8K -$2.91K -1,422 -27%
PNC Financial Services Group
55
PNC Financial Services Group
Pennsylvania
$4.7K +$4.6K +2,256 +4,700%
Legal & General Group
56
Legal & General Group
United Kingdom
$4.45K – – –
AIP
57
Ameritas Investment Partners
Nebraska
$3.93K – – –
California State Teachers Retirement System (CalSTRS)
58
California State Teachers Retirement System (CalSTRS)
California
$3.59K – – –
AB
59
Amalgamated Bank
New York
$2K – – –
Carson Wealth (CWM LLC)
60
Carson Wealth (CWM LLC)
Nebraska
$1K +$855 +548 +589%
SCM
61
Sterling Capital Management
North Carolina
$891 -$791 -388 -47%
Nisa Investment Advisors
62
Nisa Investment Advisors
Missouri
$273 +$165 +81 +153%
SS
63
SBI Securities
Japan
$245 – – –
TWD
64
True Wealth Design
Ohio
$15 +$15 +7 New
IA
65
IFP Advisors
Florida
$10 -$15 – –
EWA
66
EverSource Wealth Advisors
Alabama
$8 +$8 +4 New
Marshall Wace
67
Marshall Wace
United Kingdom
– -$42.5K -14,163 Closed
OQS
68
Occudo Quantitative Strategies
Florida
– -$41.2K -13,749 Closed
SG Americas Securities
69
SG Americas Securities
New York
– -$38K -12,584 Closed
Invesco
70
Invesco
Georgia
– -$30.4K -10,122 Closed
LPL Financial
71
LPL Financial
California
– -$30.2K -10,057 Closed
US Bancorp
72
US Bancorp
Minnesota
– -$2.5K -833 Closed
Russell Investments Group
73
Russell Investments Group
United Kingdom
– -$1.02K -341 Closed
National Bank of Canada
74
National Bank of Canada
Quebec, Canada
– -$330 -110 Closed
CAS
75
Coppell Advisory Solutions
Texas
– -$195 -70 Closed
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