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Mammoth Energy Services

Name Holding Trade Value Shares
Change
Change in
Stake
WC
1
Wexford Capital
Florida
$39.2M -$29.2M -9,996,389 -45%
Adage Capital Partners
2
Adage Capital Partners
Massachusetts
$14.9M
Vanguard Capital Management
3
Vanguard Capital Management
Pennsylvania
$3.44M +$704K +240,483 +29%
PLC
4
Peapod Lane Capital
New York
$2.63M +$609K +207,999 +35%
Dimensional Fund Advisors
5
Dimensional Fund Advisors
Texas
$2.25M +$16K +5,468 +0.8%
Jane Street
6
Jane Street
New York
$1.65M +$1.42M +483,808 +2,117%
Citadel Advisors
7
Citadel Advisors
Florida
$1.47M +$353K +120,796 +36%
BlackRock
8
BlackRock
New York
$1.33M -$3.06M -1,046,863 -72%
Marshall Wace
9
Marshall Wace
United Kingdom
$1.29M +$1.16M +395,583 New
JHU
10
Johns Hopkins University
Maryland
$1.26M +$1.13M +387,359 New
BCM
11
Bridgeway Capital Management
Texas
$1.08M
Russell Investments Group
12
Russell Investments Group
United Kingdom
$1.07M +$766K +261,791 +385%
Geode Capital Management
13
Geode Capital Management
Massachusetts
$996K -$892K -304,898 -50%
Renaissance Technologies
14
Renaissance Technologies
New York
$950K +$176K +60,308 +26%
Arrowstreet Capital
15
Arrowstreet Capital
Massachusetts
$943K +$849K +290,096 New
EF
16
Empowered Funds
Pennsylvania
$784K
AQR Capital Management
17
AQR Capital Management
Connecticut
$578K +$325K +111,093 +166%
Vanguard Fiduciary Trust
18
Vanguard Fiduciary Trust
Pennsylvania
$526K -$24.4K -8,340 -5%
RRA
19
Round Rock Advisors
Connecticut
$497K +$447K +152,841 New
Morgan Stanley
20
Morgan Stanley
New York
$434K -$56.1K -19,163 -13%
CC
21
Centiva Capital
New York
$425K +$57.8K +19,762 +18%
GCP
22
GSA Capital Partners
United Kingdom
$421K +$338K +115,638 +831%
Millennium Management
23
Millennium Management
New York
$404K +$363K +124,186 New
Acadian Asset Management
24
Acadian Asset Management
Massachusetts
$396K -$240K -82,055 -40%
MAM
25
Marquette Asset Management
Minnesota
$357K +$321K +109,826 New