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Mammoth Energy Services
TUSK

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 %
NS
26
NBC Securities
Alabama
$116K +$116K +56,884 +101,579%
Barclays
27
Barclays
United Kingdom
$101K -$24.5K -12,028 -20%
NL
28
Nuveen LLC
North Carolina
$75.2K +$75.2K +36,843 New
UBS Group
29
UBS Group
Switzerland
$61.7K +$4.76K +2,333 +8%
T. Rowe Price Associates
30
T. Rowe Price Associates
Maryland
$55K – – –
RhumbLine Advisers
31
RhumbLine Advisers
Massachusetts
$49.1K -$993 -487 -2%
NSEDCP
32
NJ State Employees Deferred Compensation Plan
New Jersey
$49K – – –
JPMorgan Chase & Co
33
JPMorgan Chase & Co
New York
$45.8K -$82.8K -40,609 -64%
IIM
34
INTECH Investment Management
Florida
$36.5K +$36.5K +17,873 New
Citigroup
35
Citigroup
New York
$35.3K -$42.5K -20,852 -55%
Mirae Asset Global ETFs Holdings
36
Mirae Asset Global ETFs Holdings
Hong Kong
$29.8K +$1.27K +624 +4%
Wells Fargo
37
Wells Fargo
California
$29.8K +$655 +321 +2%
Bank of America
38
Bank of America
North Carolina
$28.9K -$17.8K -8,705 -38%
PM
39
Penbrook Management
New York
$28.6K -$16.7K -8,200 -37%
Fidelity Investments
40
Fidelity Investments
Massachusetts
$27.4K +$8.45K +4,144 +45%
GCP
41
GSA Capital Partners
United Kingdom
$25K +$25K +12,029 New
AIC
42
Archer Investment Corporation
Indiana
$24.9K -$408 -200 -2%
PP
43
PDT Partners
New York
$24.6K -$6.89K -3,376 -22%
CF
44
Corebridge Financial
Texas
$24.3K -$359 -176 -1%
Jane Street
45
Jane Street
New York
$23.8K -$7.96K -3,903 -25%
Acadian Asset Management
46
Acadian Asset Management
Massachusetts
$23K +$23K +11,711 New
Wolverine Trading
47
Wolverine Trading
Illinois
$22.9K +$22.9K +10,872 New
New York State Common Retirement Fund
48
New York State Common Retirement Fund
New York
$22K – – –
Simplex Trading
49
Simplex Trading
Illinois
$22K +$19.4K +9,774 +749%
BNP Paribas Financial Markets
50
BNP Paribas Financial Markets
France
$21.5K +$10.8K +5,318 +102%
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