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Mammoth Energy Services
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Overview Fund Activity

107 hedge funds and large institutions have $1.06B invested in Mammoth Energy Services in 2018 Q1 according to their latest regulatory filings, with 52 funds opening new positions, 23 increasing their positions, 25 reducing their positions, and 8 closing their positions.

Holders
107
Holders Change
+44
Holders Change %
+69.84%
% of All Funds
2.46%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.05%
New
52
Increased
23
Reduced
25
Closed
8
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
Millennium Management
1
Millennium Management
New York
$17.7M
2
PCM
2
Penn Capital Management
Pennsylvania
$11.5M
3
DCM
3
Driehaus Capital Management
Illinois
$8.82M
4
Renaissance Technologies
4
Renaissance Technologies
New York
$6.36M
5
NC
5
Northpointe Capital
Michigan
$9.93M

Top Sellers

1
Janus Henderson Group
1
Janus Henderson Group
United Kingdom
$42M
2
TAM
2
THB Asset Management
Connecticut
$4.9M
3
CAM
3
Cortina Asset Management
Wisconsin
$7.94M
4
American Century Companies
4
American Century Companies
Missouri
$578K
5
Boston Partners
5
Boston Partners
Massachusetts
$2.7M
Name Market Value Shares Shares
Change 		Shares
Change %
WC
1
Wexford Capital
Florida
$802M 25,013,764 – –
Janus Henderson Group
2
Janus Henderson Group
United Kingdom
$42M 1,308,948 -973,065 -43%
Millennium Management
3
Millennium Management
New York
$17.7M 553,252 +404,318 +271%
Principal Financial Group
4
Principal Financial Group
Iowa
$17.4M 543,043 -11,813 -2%
BlackRock
5
BlackRock
New York
$16M 498,090 +49,696 +11%
Vanguard Group
6
Vanguard Group
Pennsylvania
$13.7M 426,256 -8,408 -2%
PCM
7
Penn Capital Management
Pennsylvania
$11.5M 358,081 +358,081 New
NC
8
Northpointe Capital
Michigan
$9.93M 309,858 +176,700 +133%
RA
9
Royce & Associates
New York
$9.37M 292,172 +106,254 +57%
DCM
10
Driehaus Capital Management
Illinois
$8.82M 275,059 +275,059 New
CAM
11
Cortina Asset Management
Wisconsin
$7.94M 247,555 -95,875 -28%
Renaissance Technologies
12
Renaissance Technologies
New York
$6.36M 198,400 +198,400 New
New York State Common Retirement Fund
13
New York State Common Retirement Fund
New York
$5.62M 175,262 +168,862 +2,638%
TAM
14
THB Asset Management
Connecticut
$4.9M 152,898 -103,599 -40%
State Street
15
State Street
Massachusetts
$4.46M 139,071 +13,540 +11%
Geode Capital Management
16
Geode Capital Management
Massachusetts
$4.21M 131,296 +6,989 +6%
CA
17
CastleArk Alternatives
Illinois
$3.46M 107,803 -26,533 -20%
Northern Trust
18
Northern Trust
Illinois
$3.26M 101,736 +4,741 +5%
Deutsche Bank
19
Deutsche Bank
Germany
$3.26M 101,787 +83,051 +443%
Russell Investments Group
20
Russell Investments Group
United Kingdom
$3.25M 101,302 -60,364 -37%
Franklin Resources
21
Franklin Resources
California
$3.18M 99,102 -18,900 -16%
Morgan Stanley
22
Morgan Stanley
New York
$3.05M 95,145 +65,998 +226%
Charles Schwab
23
Charles Schwab
California
$3.01M 93,967 +20,014 +27%
Boston Partners
24
Boston Partners
Massachusetts
$2.7M 84,100 -66,940 -44%
CM
25
Castleark Management
Illinois
$2.51M 78,124 -20,604 -21%
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