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Mammoth Energy Services
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Overview Fund Activity

64 hedge funds and large institutions have $102M invested in Mammoth Energy Services in 2025 Q2 according to their latest regulatory filings, with 5 funds opening new positions, 30 increasing their positions, 16 reducing their positions, and 5 closing their positions.

Holders
64
Holders Change
-1
Holders Change %
-1.54%
% of All Funds
0.86%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
5
Increased
30
Reduced
16
Closed
5
Calls
$45K
Puts
$151K
Net Calls
-$106K
Net Calls Change
-$67K

Top Buyers

1
Adage Capital Partners
1
Adage Capital Partners
Massachusetts
$12.8M
2
JPMorgan Chase & Co
2
JPMorgan Chase & Co
New York
$520K
3
Morgan Stanley
3
Morgan Stanley
New York
$519K
4
Royal Bank of Canada
4
Royal Bank of Canada
Ontario, Canada
$244K
5
Marshall Wace
5
Marshall Wace
United Kingdom
$161K

Top Sellers

1
RA
1
Royce & Associates
New York
$115K
2
V
2
ValueWorks
New York
$6.7M
3
RC
3
Rangeley Capital
Connecticut
$0
4
Citadel Advisors
4
Citadel Advisors
Florida
$410K
5
Millennium Management
5
Millennium Management
New York
$61.2K
Name Market Value Shares Shares
Change 		Shares
Change %
TRCT
51
Tower Research Capital (TRC)
New York
$21.2K 7,569 +2,933 +63%
UBP
52
Union Bancaire Privee
Switzerland
$12.2K 4,230 – –
PNC Financial Services Group
53
PNC Financial Services Group
Pennsylvania
$11.4K 4,087 +1,783 +77%
Legal & General Group
54
Legal & General Group
United Kingdom
$6.1K 2,179 – –
Simplex Trading
55
Simplex Trading
Illinois
$6K 2,419 -8,660 -78%
AIP
56
Ameritas Investment Partners
Nebraska
$5.39K 1,924 – –
Nisa Investment Advisors
57
Nisa Investment Advisors
Missouri
$5.09K 1,817 +1,683 +1,256%
California State Teachers Retirement System (CalSTRS)
58
California State Teachers Retirement System (CalSTRS)
California
$4.93K 1,761 – –
Carson Wealth (CWM LLC)
59
Carson Wealth (CWM LLC)
Nebraska
$2K 637 -4 -0.6%
AB
60
Amalgamated Bank
New York
$2K 785 – –
SCM
61
Sterling Capital Management
North Carolina
$1.82K 651 +214 +49%
SS
62
SBI Securities
Japan
$342 122 +2 +2%
TWD
63
True Wealth Design
Ohio
$34 12 +5 +71%
EWA
64
EverSource Wealth Advisors
Alabama
$11 4 – –
RC
65
Rangeley Capital
Connecticut
– – -205,880 Closed
PP
66
PDT Partners
New York
– – -12,074 Closed
GCP
67
GSA Capital Partners
United Kingdom
– – -12,029 Closed
CF
68
Corebridge Financial
Texas
– – -11,904 Closed
Wolverine Trading
69
Wolverine Trading
Illinois
– – -10,872 Closed
IA
70
IFP Advisors
Florida
– – – –
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