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CoStar Group

Name Holding Trade Value Shares
Change
Change in
Stake
T. Rowe Price Associates
1
T. Rowe Price Associates
Maryland
$1.14B +$88.2M +2,557,310 +9%
Vanguard Group
2
Vanguard Group
Pennsylvania
$1.09B -$4.57M -132,690 -0.4%
Janus Henderson Group
3
Janus Henderson Group
$1.01B -$37.3M -1,081,120 -4%
BlackRock
4
BlackRock
New York
$931M +$267M +7,732,850 +43%
BAMCO Inc
5
BAMCO Inc
New York
$918M -$32.5M -941,770 -4%
Wellington Management Group
6
Wellington Management Group
Massachusetts
$889M -$67.8M -1,968,130 -7%
Sands Capital Management
7
Sands Capital Management
Virginia
$502M -$32.3M -936,800 -6%
William Blair Investment Management
8
William Blair Investment Management
Illinois
$419M +$5.66M +164,070 +1%
Franklin Resources
9
Franklin Resources
California
$334M +$44.4M +1,288,080 +16%
State Street
10
State Street
Massachusetts
$233M +$1.41M +40,860 +0.6%
Winslow Capital Management
11
Winslow Capital Management
Minnesota
$231M -$9.49M -275,300 -4%
BCM
12
Bares Capital Management
Texas
$226M +$343K +9,940 +0.2%
Invesco
13
Invesco
Georgia
$202M -$7.21M -209,140 -4%
WRF
14
Waddell & Reed Financial
Kansas
$198M -$7.53M -218,390 -4%
TCM
15
TimesSquare Capital Management
New York
$190M -$46.3M -1,342,530 -20%
MWNA
16
Marshall Wace North America
New York
$186M +$43.8M +1,269,290 +33%
Geode Capital Management
17
Geode Capital Management
Massachusetts
$117M +$2.71M +78,680 +2%
RP
18
Riverbridge Partners
Minnesota
$115M -$49.1M -1,423,200 -31%
Goldman Sachs
19
Goldman Sachs
New York
$112M -$135K -3,930 -0.1%
Bank of New York Mellon
20
Bank of New York Mellon
New York
$107M -$7.42M -215,270 -7%
DDC
21
DF Dent & Co
Maryland
$107M -$1.17M -33,950 -1%
William Blair & Company
22
William Blair & Company
Illinois
$98.8M -$24.2M -702,700 -21%
AllianceBernstein
23
AllianceBernstein
Tennessee
$98.2M -$45.2M -1,312,420 -33%
Norges Bank
24
Norges Bank
Norway
$98.2M +$10.2M +296,390 +12%
MCM
25
Melvin Capital Management
New York
$97.9M -$10.3M -300,000 -10%