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CoStar Group
CSGP

Overview Fund Activity

845 hedge funds and large institutions have $33.5B invested in CoStar Group in 2025 Q1 according to their latest regulatory filings, with 140 funds opening new positions, 372 increasing their positions, 258 reducing their positions, and 75 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
845
Holders Change
+52
Holders Change %
+6.56%
% of All Funds
11.48%
Holding in Top 10
23
Holding in Top 10 Change
+7
Holding in Top 10 Change %
+43.75%
% of All Funds
0.31%
New
140
Increased
372
Reduced
258
Closed
75
Calls
$337M
Puts
$119M
Net Calls
+$218M
Net Calls Change
+$204M

Top Buyers

1
MMA
Mizuho Markets Americas
New York
$586M
2
Morgan Stanley
Morgan Stanley
New York
$627M
3
TCIM
TOMS Capital Investment Management
New York
$278M
4
UBS Group
UBS Group
Switzerland
$376M
5
Vanguard Group
Vanguard Group
Pennsylvania
$5.42B

Top Sellers

1
Macquarie Group
Macquarie Group
Australia
$489M
2
Viking Global Investors
Viking Global Investors
Connecticut
$0
3
Goldman Sachs
Goldman Sachs
New York
$214M
4
SCM
Spyglass Capital Management
California
$39.3M
5
Canada Pension Plan Investment Board
Canada Pension Plan Investment Board
Ontario, Canada
$37M
Name Holding Trade Value Shares
Change 		Shares
Change %
New York State Teachers Retirement System (NYSTRS)
126
New York State Teachers Retirement System (NYSTRS)
New York
$25.4M -$805K -10,157 -3%
KCM
127
Kornitzer Capital Management
Kansas
$24.6M -$17K -215 -0.1%
SFI
128
Susquehanna Fundamental Investments
Pennsylvania
$24.5M +$22.7M +287,065 +1,294%
FGP
129
Freestone Grove Partners
California
$24.3M +$24.3M +306,621 New
Asset Management One
130
Asset Management One
Japan
$23.8M +$1.01M +12,706 +4%
Stifel Financial
131
Stifel Financial
Missouri
$23.5M +$1.64M +20,729 +8%
TCM
132
Tran Capital Management
California
$22.9M +$22.9M +288,760 New
ACM
133
Ashford Capital Management
Delaware
$22.7M -$2.49M -31,378 -10%
LIP
134
Landmark Investment Partners
Florida
$22.4M +$19.4M +245,247 +650%
OAM
135
Oppenheimer Asset Management
New York
$22.2M +$683K +8,619 +3%
BFS
136
Baskin Financial Services
Ontario, Canada
$22.2M +$144K +1,821 +0.7%
First Trust Advisors
137
First Trust Advisors
Illinois
$22M -$2.41M -30,471 -10%
Manulife (Manufacturers Life Insurance)
138
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$21.9M +$1.15M +14,454 +6%
RL
139
Ruffer LLP
United Kingdom
$21.4M +$8.58M +108,233 +67%
GC
140
Gillson Capital
Illinois
$21.3M +$3.93M +49,633 +23%
AAM
141
Aureus Asset Management
Massachusetts
$20.6M +$847K +10,688 +4%
Universal-Beteiligungs- und Servicegesellschaft
142
Universal-Beteiligungs- und Servicegesellschaft
Germany
$20.5M -$602K -7,592 -3%
Korea Investment Corp
143
Korea Investment Corp
South Korea
$20.3M -$1.92M -24,191 -9%
Swedbank
144
Swedbank
Sweden
$19.8M – – –
Aberdeen Group
145
Aberdeen Group
United Kingdom
$19.6M +$10.3M +130,277 +110%
GGHC
146
Gilder Gagnon Howe & Co
New York
$19.5M +$6.32M +79,763 +48%
State of Wisconsin Investment Board
147
State of Wisconsin Investment Board
Wisconsin
$18.8M +$1.02M +12,845 +6%
Prudential Financial
148
Prudential Financial
New Jersey
$17.9M +$425K +5,361 +2%
Chevy Chase Trust
149
Chevy Chase Trust
Maryland
$17.5M +$268K +3,378 +2%
NP
150
NS Partners
United Kingdom
$17.4M +$370K +4,675 +2%
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