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Name Holding Trade Value Shares
Change
Change in
Stake
EWM
1
Essex Woodlands Management
Texas
$105M -$27.1M -1,150,000 -24%
OM
2
Opaleye Management
Massachusetts
$55.8M
BlackRock
3
BlackRock
New York
$50.5M +$9.64M +408,596 +30%
Fidelity Investments
4
Fidelity Investments
Massachusetts
$38.6M +$26.2M +1,111,166 +437%
Vanguard Group
5
Vanguard Group
Pennsylvania
$37.6M +$1.5M +63,400 +5%
Bank of New York Mellon
6
Bank of New York Mellon
New York
$24.1M +$5.15M +218,430 +35%
DCM
7
Driehaus Capital Management
Illinois
$19M -$186K -7,872 -1%
NCGI
8
Next Century Growth Investors
Minnesota
$18.9M +$257K +10,876 +2%
Renaissance Technologies
9
Renaissance Technologies
New York
$18.6M +$6.03M +255,400 +63%
State Street
10
State Street
Massachusetts
$16.2M +$2.57M +109,076 +24%
GGHC
11
Gilder Gagnon Howe & Co
New York
$15.1M -$701K -29,727 -5%
PCM
12
Perkins Capital Management
Minnesota
$14M -$1.07M -45,448 -8%
RSCM
13
Rock Springs Capital Management
Maryland
$13.5M +$1.83M +77,500 +19%
Wells Fargo
14
Wells Fargo
California
$12.2M +$9.39M +397,870 +1,148%
Russell Investments Group
15
Russell Investments Group
United Kingdom
$10.7M -$4.95M -209,899 -36%
CM
16
Castleark Management
Illinois
$10.3M -$1.05M -44,397 -11%
CWAM
17
Columbia Wanger Asset Management
Illinois
$10.1M +$8.42M +356,637 New
Northern Trust
18
Northern Trust
Illinois
$9.37M +$557K +23,610 +8%
CAM
19
Cortina Asset Management
Wisconsin
$9.37M -$3.7M -156,754 -32%
WRF
20
Waddell & Reed Financial
Kansas
$8.79M -$295K -12,500 -4%
AIC
21
AWM Investment Company
New York
$7.97M -$1.31M -55,500 -16%
SPPAM
22
Summit Partners Public Asset Management
Massachusetts
$7.92M
GPCM
23
Granite Point Capital Management
Massachusetts
$7.75M
Geode Capital Management
24
Geode Capital Management
Massachusetts
$7.29M -$36K -1,526 -0.6%
Allianz Asset Management
25
Allianz Asset Management
Germany
$7.23M -$116K -4,923 -2%