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CoStar Group

881 hedge funds and large institutions have $34.8B invested in CoStar Group in 2025 Q3 according to their latest regulatory filings, with 105 funds opening new positions, 351 increasing their positions, 308 reducing their positions, and 62 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more first-time investments, than exits

New positions opened: | Existing positions closed:

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more funds holding

Funds holding:

2% more capital invested

Capital invested by funds: $34.1B → $34.8B (+$693M)

3.09% less ownership

Funds ownership: 100.61%97.52% (-3.1%)

4% less funds holding in top 10

Funds holding in top 10: 2625 (-1)

Holders
881
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
25
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$199M
Puts
$81.5M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
Mitsubishi UFJ Trust & Banking
101
Mitsubishi UFJ Trust & Banking
Japan
$39.3M
AllianceBernstein
102
AllianceBernstein
Tennessee
$39.2M
TD Asset Management
103
TD Asset Management
Ontario, Canada
$38.4M
Arrowstreet Capital
104
Arrowstreet Capital
Massachusetts
$38.3M
NSGL
105
No Street GP LP
California
$38M
GCM
106
Geneva Capital Management
Wisconsin
$36.8M
ICP
107
Ironvine Capital Partners
Nebraska
$36.3M
Canada Life
108
Canada Life
Manitoba, Canada
$36.2M
VG
109
Visualize Group
New York
$36.2M
Neuberger Berman Group
110
Neuberger Berman Group
New York
$35.6M
Millennium Management
111
Millennium Management
New York
$34.5M
Royal London Asset Management
112
Royal London Asset Management
United Kingdom
$34.3M
QCMNJ
113
Quantum Capital Management (New Jersey)
New Jersey
$34M
ClearBridge Investments
114
ClearBridge Investments
New York
$33.7M
State Board of Administration of Florida Retirement System
115
State Board of Administration of Florida Retirement System
Florida
$33M
Adage Capital Partners
116
Adage Capital Partners
Massachusetts
$32.5M
JAM
117
Jupiter Asset Management
United Kingdom
$32.3M
NC
118
NZS Capital
Colorado
$31.5M
AIM
119
AXA Investment Managers
France
$31.3M
YL
120
YCG LLC
Texas
$30.3M
CCP
121
Caden Capital Partners
California
$29.5M
LGF
122
LGT Group Foundation
Liechtenstein
$28.6M
AAM
123
Aureus Asset Management
Massachusetts
$28.6M
PTC
124
Petrus Trust Company
Texas
$28.4M
SCM
125
Sone Capital Management
New York
$28.2M