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Mammoth Energy Services

76 hedge funds and large institutions have $82.6M invested in Mammoth Energy Services in 2025 Q3 according to their latest regulatory filings, with 16 funds opening new positions, 17 increasing their positions, 29 reducing their positions, and 5 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding

Funds holding:

more funds holding in top 10

Funds holding in top 10:

less ownership

Funds ownership:

19% less capital invested

Capital invested by funds: $102M → $82.6M (-$19.4M)

41% less repeat investments, than reductions

Existing positions increased: 17 | Existing positions reduced: 29

66% less call options, than puts

Call options by funds: $35K | Put options by funds: $102K

Holders
76
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
1
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$35K
Puts
$102K
Net Calls
Net Calls Change

Top Buyers

1 +$279K
2 +$165K
3 +$90.5K
4
Jane Street
Jane Street
New York
+$79.1K
5
NA
NewEdge Advisors
Louisiana
+$58.4K
Name Holding Trade Value Shares
Change
Change in
Stake
AIC
51
Archer Investment Corporation
Indiana
$25.6K
Invesco
52
Invesco
Georgia
$24.6K
New York State Common Retirement Fund
53
New York State Common Retirement Fund
New York
$24.5K
PFSRSONJ
54
Police & Firemen's Retirement System of New Jersey
New Jersey
$22.1K
TRCT
55
Tower Research Capital (TRC)
New York
$11.2K
UBP
56
Union Bancaire Privee
Switzerland
$10.3K
PNC Financial Services Group
57
PNC Financial Services Group
Pennsylvania
$8.57K
Legal & General Group
58
Legal & General Group
United Kingdom
$4.99K
Russell Investments Group
59
Russell Investments Group
United Kingdom
$4.79K
AIP
60
Ameritas Investment Partners
Nebraska
$4.41K
California State Teachers Retirement System (CalSTRS)
61
California State Teachers Retirement System (CalSTRS)
California
$4.04K
SCM
62
Sterling Capital Management
North Carolina
$3.83K
AB
63
Amalgamated Bank
New York
$2K
Citigroup
64
Citigroup
New York
$1.67K
ASN
65
Advisory Services Network
Georgia
$1.15K
Carson Wealth (CWM LLC)
66
Carson Wealth (CWM LLC)
Nebraska
$1K
Nisa Investment Advisors
67
Nisa Investment Advisors
Missouri
$987
Optiver Holding
68
Optiver Holding
Netherlands
$751
TFA
69
Transamerica Financial Advisors
Florida
$357
SS
70
SBI Securities
Japan
$275
AAP
71
Arax Advisory Partners
Colorado
$160
IA
72
IFP Advisors
Florida
$68
CA
73
Clearstead Advisors
Ohio
$26
TWD
74
True Wealth Design
Ohio
$19
EWA
75
EverSource Wealth Advisors
Alabama
$9