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CoStar Group

791 hedge funds and large institutions have $16.4B invested in CoStar Group in 2026 Q1 according to their latest regulatory filings, with 125 funds opening new positions, 307 increasing their positions, 276 reducing their positions, and 164 closing their positions.

New
Increased
Maintained
Reduced
Closed

262% more call options, than puts

Call options by funds: $142M | Put options by funds: $39.3M

11% more repeat investments, than reductions

Existing positions increased: 307 | Existing positions reduced: 276

0.54% less ownership

Funds ownership: 97.52%96.98% (-0.54%)

7% less funds holding

Funds holding: 846791 (-55)

24% less first-time investments, than exits

New positions opened: 125 | Existing positions closed: 164

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
791
Holders Change
-55
Holders Change %
-6.5%
% of All Funds
9.74%
Holding in Top 10
7
Holding in Top 10 Change
-10
Holding in Top 10 Change %
-58.82%
% of All Funds
0.09%
New
125
Increased
307
Reduced
276
Closed
164
Calls
$142M
Puts
$39.3M
Net Calls
+$103M
Net Calls Change
+$7.38M
Name Holding Trade Value Shares
Change
Change in
Stake
YIH
126
Y-Intercept (HK)
Hong Kong
$12.6M +$15.1M +290,667 +1,368%
Rafferty Asset Management
127
Rafferty Asset Management
New York
$12.4M +$3.35M +64,301 +26%
Two Sigma Investments
128
Two Sigma Investments
New York
$12.2M +$15.8M +303,004 New
BCP
129
BSN Capital Partners
United Kingdom
$11.8M
Mirae Asset Global ETFs Holdings
130
Mirae Asset Global ETFs Holdings
Hong Kong
$11.8M -$495K -9,508 -3%
State of Wisconsin Investment Board
131
State of Wisconsin Investment Board
Wisconsin
$11.5M +$2.99M +57,371 +25%
MMA
132
Mizuho Markets Americas
New York
$11.1M -$216M -4,140,240 -94%
SG Americas Securities
133
SG Americas Securities
New York
$11M +$1.95M +37,454 +16%
TRSOTSOK
134
Teachers Retirement System of the State of Kentucky
Kentucky
$10.9M +$156K +3,000 +1%
Susquehanna International Group
135
Susquehanna International Group
Pennsylvania
$10.3M +$3.11M +59,645 +31%
LP
136
LMR Partners
United Kingdom
$10.2M +$13.2M +252,950 New
FC
137
FORA Capital
Florida
$10.2M +$13.1M +252,068 New
Franklin Resources
138
Franklin Resources
California
$10.1M -$47.5M -912,849 -79%
Universal-Beteiligungs- und Servicegesellschaft
139
Universal-Beteiligungs- und Servicegesellschaft
Germany
$10.1M -$1.13M -21,779 -8%
Manulife (Manufacturers Life Insurance)
140
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$10M -$181K -3,468 -1%
Stifel Financial
141
Stifel Financial
Missouri
$9.89M +$182K +3,495 +1%
Aviva
142
Aviva
United Kingdom
$9.8M -$2.04M -39,165 -14%
Canada Life
143
Canada Life
Manitoba, Canada
$9.57M -$12.2K -234 -0.1%
Mirae Asset Global Investments
144
Mirae Asset Global Investments
South Korea
$9.18M +$915K +17,585 +8%
TC
145
Tsai Capital
New York
$9.15M +$11.8M +226,726 New
LIP
146
Lighthouse Investment Partners
Florida
$8.85M +$4.94M +94,903 +76%
SEEDPG
147
S.E.E.D. Planning Group
New York
$8.84M +$8.96M +172,123 +366%
NC
148
Nicholas Company
Wisconsin
$8.64M +$2.34K +45 +0%
TD Asset Management
149
TD Asset Management
Ontario, Canada
$8.57M -$12.8M -245,152 -54%
VIA
150
Vanguard Investments Australia
Australia
$8.51M +$11M +210,994 New