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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
IG
826
ING Group
Netherlands
-$4.36M -64,844 Closed
LFM
827
LGT Fund Management
Liechtenstein
-$3.43M -50,530 Closed
TAMH
828
Taikang Asset Management (HK)
Hong Kong
-$3.09M -45,969 Closed
NIG
829
NFJ Investment Group
Texas
-$2.85M -42,415 Closed
OC
830
Oppenheimer & Co
New York
-$2.68M -39,791 Closed
SSA
831
Schonfeld Strategic Advisors
New York
-$2.64M -39,225 Closed
KC
832
Katamaran Capital
United Kingdom
-$2.46M -36,651 Closed
BWG
833
Boomfish Wealth Group
Georgia
-$2.32M -34,474 Closed
AC
834
Allstate Corporation
Illinois
-$2.28M -33,862 Closed
DGM
835
Delta Global Management
New York
-$2.14M -31,841 Closed
GIA
836
Gateway Investment Advisers
Ohio
-$1.94M -28,779 Closed
ALMGDA
837
AG2R La Mondiale Gestion d'Actifs
France
-$1.84M -27,342 Closed
KRS
838
Kentucky Retirement Systems
Kentucky
-$1.76M -26,218 Closed
VIA
839
Virtus Investment Advisers
Connecticut
-$1.64M -24,381 Closed
Twin Tree Management
840
Twin Tree Management
Texas
-$1.17M -22,466 Closed
FBT
841
First Bank & Trust
South Dakota
-$1.35M -20,028 Closed
Group One Trading
842
Group One Trading
Illinois
-$1.03M -19,737 Closed
MWM
843
Maridea Wealth Management
New York
-$1.3M -19,393 Closed
DILIC
844
Dai-ichi Life Insurance Company
Japan
-$1.17M -17,377 Closed
MMEA
845
Main Management ETF Advisors
California
-$1.16M -17,226 Closed
LOAMS
846
Lombard Odier Asset Management (Switzerland)
Switzerland
-$1.13M -16,820 Closed
EMPI
847
Elo Mutual Pension Insurance
Finland
-$1.12M -16,684 Closed
Verition Fund Management
848
Verition Fund Management
Connecticut
-$1.08M -16,042 Closed
KAS
849
Kestra Advisory Services
Texas
-$965K -14,355 Closed
SLI
850
Sumitomo Life Insurance
Japan
-$947K -14,090 Closed