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Mammoth Energy Services
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Overview Fund Activity

38 hedge funds and large institutions have $45.2M invested in Mammoth Energy Services in 2020 Q3 according to their latest regulatory filings, with 3 funds opening new positions, 6 increasing their positions, 19 reducing their positions, and 12 closing their positions.

Holders
38
Holders Change
-9
Holders Change %
-19.15%
% of All Funds
0.77%
Holding in Top 10
2
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+100%
% of All Funds
0.04%
New
3
Increased
6
Reduced
19
Closed
12
Calls
$9K
Puts
–
Net Calls
+$9K
Net Calls Change
–

Top Buyers

1
Goldman Sachs
1
Goldman Sachs
New York
$165K
2
Renaissance Technologies
2
Renaissance Technologies
New York
$86K
3
Cambridge Investment Research Advisors
3
Cambridge Investment Research Advisors
Iowa
$86K
4
TRCT
4
Tower Research Capital (TRC)
New York
$43K
5
Northern Trust
5
Northern Trust
Illinois
$112K

Top Sellers

1
EI
1
EAM Investors
California
$0
2
Dimensional Fund Advisors
2
Dimensional Fund Advisors
Texas
$445K
3
Vanguard Group
3
Vanguard Group
Pennsylvania
$355K
4
V
4
ValueWorks
New York
$5.54M
5
D.E. Shaw & Co
5
D.E. Shaw & Co
New York
$49K
Name Market Value Shares Shares
Change 		Shares
Change %
WC
1
Wexford Capital
Florida
$35.3M 22,045,273 -1 -0%
V
2
ValueWorks
New York
$5.54M 3,463,635 -163,895 -5%
BCM
3
Bridgeway Capital Management
Texas
$754K 471,500 – –
BlackRock
4
BlackRock
New York
$469K 293,128 -1,203 -0.4%
Dimensional Fund Advisors
5
Dimensional Fund Advisors
Texas
$445K 278,218 -188,098 -40%
Invesco
6
Invesco
Georgia
$361K 225,532 -7,456 -3%
Vanguard Group
7
Vanguard Group
Pennsylvania
$355K 221,637 -187,125 -46%
WG
8
Winton Group
United Kingdom
$311K 194,342 -97,723 -33%
Two Sigma Advisers
9
Two Sigma Advisers
New York
$278K 173,900 -109,600 -39%
Geode Capital Management
10
Geode Capital Management
Massachusetts
$202K 126,379 -504 -0.4%
Goldman Sachs
11
Goldman Sachs
New York
$165K 102,846 +85,713 +500%
Bank of New York Mellon
12
Bank of New York Mellon
New York
$145K 90,626 – –
Squarepoint
13
Squarepoint
New York
$131K 81,781 -5,356 -6%
Northern Trust
14
Northern Trust
Illinois
$112K 70,078 +21,504 +44%
Stifel Financial
15
Stifel Financial
Missouri
$89K 55,572 – –
TF
16
Trek Financial
Arizona
$88K 54,897 -10,080 -16%
Cambridge Investment Research Advisors
17
Cambridge Investment Research Advisors
Iowa
$86K 53,921 +29,680 +122%
Renaissance Technologies
18
Renaissance Technologies
New York
$86K 53,867 +43,500 +420%
NJBEST
19
New Jersey Better Educational Savings Trust
New Jersey
$51K 31,600 – –
D.E. Shaw & Co
20
D.E. Shaw & Co
New York
$49K 30,815 -140,073 -82%
TRCT
21
Tower Research Capital (TRC)
New York
$43K 26,769 +23,529 +726%
NSEDCP
22
NJ State Employees Deferred Compensation Plan
New Jersey
$38K 24,000 – –
Jane Street
23
Jane Street
New York
$30K 18,570 -51,418 -73%
FAAS
24
First Allied Advisory Services
California
$29K 18,000 – –
MRI
25
Mad River Investors
Massachusetts
$19K 11,700 +11,700 New
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