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Mammoth Energy Services

Name Holding Trade Value Shares
Change
Change in
Stake
WC
1
Wexford Capital
Florida
$465M +$85.2M +4,565,416 +22%
Janus Henderson Group
2
Janus Henderson Group
$44M +$44.1M +2,363,961 New
American Century Companies
3
American Century Companies
Missouri
$11.7M +$4.14M +221,656 +55%
Principal Financial Group
4
Principal Financial Group
Iowa
$10.8M -$231K -12,386 -2%
BlackRock
5
BlackRock
New York
$9.52M +$877K +46,993 +10%
Vanguard Group
6
Vanguard Group
Pennsylvania
$7.79M +$1.05M +55,973 +15%
UOC
7
UBS O'Connor
Illinois
$6.05M -$783K -41,917 -11%
CAM
8
Cortina Asset Management
Wisconsin
$5.03M +$4.54M +243,101 +882%
PRCM
9
Pine River Capital Management
Minnesota
$4.44M -$398K -21,300 -8%
TAM
10
THB Asset Management
Connecticut
$4.39M -$225K -12,069 -5%
DCM
11
Driehaus Capital Management
Illinois
$3.45M -$256K -13,720 -7%
Franklin Resources
12
Franklin Resources
California
$2.49M
RA
13
Royce & Associates
New York
$2.4M +$2.26M +121,000 +1,551%
PAM
14
Panagora Asset Management
Massachusetts
$2.32M +$859K +46,029 +59%
State Street
15
State Street
Massachusetts
$2.13M +$317K +16,965 +17%
Geode Capital Management
16
Geode Capital Management
Massachusetts
$2.1M +$157K +8,398 +8%
Luther King Capital Management (LKCM)
17
Luther King Capital Management (LKCM)
Texas
$2.08M -$447K -23,915 -18%
Russell Investments Group
18
Russell Investments Group
United Kingdom
$2.07M -$98.7K -5,285 -5%
Northern Trust
19
Northern Trust
Illinois
$1.72M +$37.3K +1,996 +2%
Arrowstreet Capital
20
Arrowstreet Capital
Massachusetts
$1.48M +$203K +10,876 +16%
CCMLC
21
Cardinal Capital Management LLC (Connecticut)
Connecticut
$1.44M +$48.5K +2,595 +3%
Victory Capital Management
22
Victory Capital Management
Texas
$1.34M +$74.4K +3,986 +6%
TCIM
23
TIAA CREF Investment Management
New York
$1.31M +$965K +51,707 +274%
Boston Partners
24
Boston Partners
Massachusetts
$910K -$132K -7,071 -13%
Invesco
25
Invesco
Georgia
$850K -$290K -15,539 -25%