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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
LPL Financial
201
LPL Financial
California
$4.79M +$72.5K +1,393 +1%
NAM
202
Nissay Asset Management
Japan
$4.76M +$156K +2,995 +3%
SOMRS
203
State of Michigan Retirement System
Michigan
$4.7M -$15.6K -300 -0.3%
CNB
204
Czech National Bank
Czech Republic
$4.66M +$191K +3,671 +3%
ASRS
205
Arizona State Retirement System
Arizona
$4.65M -$65.8K -1,263 -1%
State of Tennessee, Department of Treasury
206
State of Tennessee, Department of Treasury
Tennessee
$4.61M -$112K -2,154 -2%
Mariner
207
Mariner
Kansas
$4.42M +$3.2M +61,522 +128%
NOCM
208
Night Owl Capital Management
Connecticut
$4.41M +$32.7K +629 +0.6%
Connor, Clark & Lunn Investment Management (CC&L)
209
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$4.34M +$5.61M +107,678 New
AAIS
210
ABN AMRO Investment Solutions
$4.19M -$24.4K -468 -0.4%
DA
211
Dash Acquisitions
California
$4.18M +$813K +15,608 +18%
ACM
212
Ashford Capital Management
Delaware
$4.13M -$7.57M -145,469 -59%
WG
213
Winton Group
United Kingdom
$4.09M +$5.28M +101,423 New
MIM
214
MetLife Investment Management
New Jersey
$4.08M -$142K -2,729 -3%
IC
215
IEQ Capital
California
$4M +$4.41M +84,674 +581%
Swedbank
216
Swedbank
Sweden
$3.99M -$10.6M -204,324 -67%
Creative Planning
217
Creative Planning
Kansas
$3.92M +$2.23M +42,741 +78%
SW
218
SVB Wealth
Massachusetts
$3.88M +$1.54M +29,650 +45%
Bank of Nova Scotia
219
Bank of Nova Scotia
Ontario, Canada
$3.81M +$700K +13,450 +17%
Holocene Advisors
220
Holocene Advisors
New York
$3.75M +$4.84M +92,988 New
KBC Group
221
KBC Group
Belgium
$3.7M -$91.2K -1,752 -2%
GGHC
222
Gilder Gagnon Howe & Co
New York
$3.67M -$7.75M -148,940 -62%
Retirement Systems of Alabama
223
Retirement Systems of Alabama
Alabama
$3.63M -$8.38K -161 -0.2%
RIM
224
Rakuten Investment Management
Japan
$3.61M +$505K +9,694 +12%
GC
225
Guggenheim Capital
Illinois
$3.57M -$1.07M -20,462 -19%