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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
YIH
126
Y-Intercept (HK)
Hong Kong
$12.6M
Rafferty Asset Management
127
Rafferty Asset Management
New York
$12.4M
Two Sigma Investments
128
Two Sigma Investments
New York
$12.2M
BCP
129
BSN Capital Partners
United Kingdom
$11.8M
Mirae Asset Global ETFs Holdings
130
Mirae Asset Global ETFs Holdings
Hong Kong
$11.8M
State of Wisconsin Investment Board
131
State of Wisconsin Investment Board
Wisconsin
$11.5M
MMA
132
Mizuho Markets Americas
New York
$11.1M
SG Americas Securities
133
SG Americas Securities
New York
$11M
TRSOTSOK
134
Teachers Retirement System of the State of Kentucky
Kentucky
$10.9M
Susquehanna International Group
135
Susquehanna International Group
Pennsylvania
$10.3M
LP
136
LMR Partners
United Kingdom
$10.2M
FC
137
FORA Capital
Florida
$10.2M
Franklin Resources
138
Franklin Resources
California
$10.1M
Universal-Beteiligungs- und Servicegesellschaft
139
Universal-Beteiligungs- und Servicegesellschaft
Germany
$10.1M
Manulife (Manufacturers Life Insurance)
140
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$10M
Stifel Financial
141
Stifel Financial
Missouri
$9.89M
Aviva
142
Aviva
United Kingdom
$9.8M
Canada Life
143
Canada Life
Manitoba, Canada
$9.57M
Mirae Asset Global Investments
144
Mirae Asset Global Investments
South Korea
$9.18M
TC
145
Tsai Capital
New York
$9.15M
LIP
146
Lighthouse Investment Partners
Florida
$8.85M
SEEDPG
147
S.E.E.D. Planning Group
New York
$8.84M
NC
148
Nicholas Company
Wisconsin
$8.64M
TD Asset Management
149
TD Asset Management
Ontario, Canada
$8.57M
VIA
150
Vanguard Investments Australia
Australia
$8.51M