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CoStar Group
CSGP

Overview Fund Activity

857 hedge funds and large institutions have $34.1B invested in CoStar Group in 2025 Q2 according to their latest regulatory filings, with 97 funds opening new positions, 347 increasing their positions, 313 reducing their positions, and 74 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
857
Holders Change
+12
Holders Change %
+1.42%
% of All Funds
11.49%
Holding in Top 10
26
Holding in Top 10 Change
+3
Holding in Top 10 Change %
+13.04%
% of All Funds
0.35%
New
97
Increased
347
Reduced
313
Closed
74
Calls
$180M
Puts
$97.5M
Net Calls
+$82.6M
Net Calls Change
-$135M

Top Buyers

1
Janus Henderson Group
Janus Henderson Group
United Kingdom
$324M
2
Viking Global Investors
Viking Global Investors
Connecticut
$259M
3
Franklin Resources
Franklin Resources
California
$277M
4
TP
Third Point
New York
$248M
5
IAM
Ion Asset Management
Israel
$94.1M

Top Sellers

1
TCIM
TOMS Capital Investment Management
New York
$0
2
BlackRock
BlackRock
New York
$2.82B
3
MMA
Mizuho Markets Americas
New York
$471M
4
Ameriprise
Ameriprise
Minnesota
$86.7M
5
Macquarie Group
Macquarie Group
Australia
$389M
Name Holding Trade Value Shares
Change 		Shares
Change %
Mitsubishi UFJ Trust & Banking
101
Mitsubishi UFJ Trust & Banking
Japan
$38.3M -$3.22M -40,094 -8%
OCBV
102
Ownership Capital B.V.
Netherlands
$38.2M -$12.1M -151,089 -24%
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
103
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$37.1M -$55.8M -693,952 -60%
AllianceBernstein
104
AllianceBernstein
Tennessee
$37M -$1.35M -16,835 -4%
LPL Financial
105
LPL Financial
California
$37M +$1.08M +13,413 +3%
GCM
106
Geneva Capital Management
Wisconsin
$36M +$3.57M +44,444 +11%
Russell Investments Group
107
Russell Investments Group
United Kingdom
$35.9M +$1.79M +22,195 +5%
ICP
108
Ironvine Capital Partners
Nebraska
$35.4M -$1.41M -17,544 -4%
YL
109
YCG LLC
Texas
$35.3M -$650K -8,082 -2%
BA
110
Bridgewater Associates
Connecticut
$34.8M -$44.5M -553,285 -56%
NSGL
111
No Street GP LP
California
$34.6M +$2.81M +35,000 +9%
Bank of Montreal
112
Bank of Montreal
Ontario, Canada
$33.8M -$1.83M -22,790 -5%
National Bank of Canada
113
National Bank of Canada
Quebec, Canada
$33.4M +$5.89M +73,285 +21%
Canada Life
114
Canada Life
Manitoba, Canada
$33M +$1.59M +19,788 +5%
State Board of Administration of Florida Retirement System
115
State Board of Administration of Florida Retirement System
Florida
$32.9M +$75.6K +940 +0.2%
Royal London Asset Management
116
Royal London Asset Management
United Kingdom
$32.6M -$973K -12,099 -3%
QCMNJ
117
Quantum Capital Management (New Jersey)
New Jersey
$32.5M -$9.99M -124,241 -24%
ClearBridge Investments
118
ClearBridge Investments
New York
$32M +$482 +6 +0%
Adage Capital Partners
119
Adage Capital Partners
Massachusetts
$31.1M +$145K +1,800 +0.5%
CCP
120
Caden Capital Partners
California
$30.5M -$4.64M -57,773 -13%
AQR Capital Management
121
AQR Capital Management
Connecticut
$29.3M +$19M +236,255 +184%
GC
122
Gillson Capital
Illinois
$28.7M +$7.06M +87,752 +33%
NC
123
NZS Capital
Colorado
$28.2M -$3.68M -45,781 -12%
Mirae Asset Global ETFs Holdings
124
Mirae Asset Global ETFs Holdings
Hong Kong
$27.1M -$1.43M -17,840 -5%
Victory Capital Management
125
Victory Capital Management
Texas
$27M -$108K -1,348 -0.4%
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5
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