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CoStar Group

785 hedge funds and large institutions have $16.4B invested in CoStar Group in 2026 Q1 according to their latest regulatory filings, with 126 funds opening new positions, 305 increasing their positions, 272 reducing their positions, and 166 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

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

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less ownership

Funds ownership:

less funds holding

Funds holding:

24% less first-time investments, than exits

New positions opened: 126 | Existing positions closed: 166

41% less capital invested

Capital invested by funds: $27.8B → $16.4B (-$11.3B)

59% less funds holding in top 10

Funds holding in top 10: 177 (-10)

Holders
785
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
7
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$142M
Puts
$39.3M
Net Calls
Net Calls Change

Top Sellers

1 -$302M
2 -$233M
3 -$216M
4
TP
Third Point
New York
-$213M
5
BAMCO Inc
BAMCO Inc
New York
-$166M
Name Holding Trade Value Shares
Change
Change in
Stake
GAM
101
Gotham Asset Management
New York
$18M
GCM
102
Geneva Capital Management
Wisconsin
$17.6M
Royal London Asset Management
103
Royal London Asset Management
United Kingdom
$17.4M
Mitsubishi UFJ Trust & Banking
104
Mitsubishi UFJ Trust & Banking
Japan
$17.1M
Ninety One (UK)
105
Ninety One (UK)
United Kingdom
$16.7M
O
106
Ossiam
France
$15.6M
SEI Investments
107
SEI Investments
Pennsylvania
$15.6M
Adage Capital Partners
108
Adage Capital Partners
Massachusetts
$15.3M
State Board of Administration of Florida Retirement System
109
State Board of Administration of Florida Retirement System
Florida
$15.2M
JAM
110
Jupiter Asset Management
United Kingdom
$15.2M
ICP
111
Ironvine Capital Partners
Nebraska
$15.1M
Fayez Sarofim & Co
112
Fayez Sarofim & Co
Texas
$15.1M
NIM
113
NEOS Investment Management
Connecticut
$14.7M
Russell Investments Group
114
Russell Investments Group
United Kingdom
$14.1M
FCBT
115
First Citizens Bank & Trust
North Carolina
$13.9M
OAM
116
Oppenheimer Asset Management
New York
$13.8M
QCM
117
Quantinno Capital Management
New York
$13.7M
Fidelity International
118
Fidelity International
Bermuda
$13.7M
SP
119
ShawSpring Partners
Massachusetts
$13.7M
Brown Advisory
120
Brown Advisory
Maryland
$13.6M
Victory Capital Management
121
Victory Capital Management
Texas
$13.5M
Envestnet Portfolio Solutions
122
Envestnet Portfolio Solutions
Illinois
$13.1M
New York State Teachers Retirement System (NYSTRS)
123
New York State Teachers Retirement System (NYSTRS)
New York
$13M
Aberdeen Group
124
Aberdeen Group
United Kingdom
$12.9M
FVWA
125
Foster Victor Wealth Advisors
South Carolina
$12.8M