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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

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: 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
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
IG
826
ING Group
Netherlands
LFM
827
LGT Fund Management
Liechtenstein
TAMH
828
Taikang Asset Management (HK)
Hong Kong
NIG
829
NFJ Investment Group
Texas
OC
830
Oppenheimer & Co
New York
SSA
831
Schonfeld Strategic Advisors
New York
KC
832
Katamaran Capital
United Kingdom
BWG
833
Boomfish Wealth Group
Georgia
AC
834
Allstate Corporation
Illinois
DGM
835
Delta Global Management
New York
GIA
836
Gateway Investment Advisers
Ohio
ALMGDA
837
AG2R La Mondiale Gestion d'Actifs
France
KRS
838
Kentucky Retirement Systems
Kentucky
VIA
839
Virtus Investment Advisers
Connecticut
Twin Tree Management
840
Twin Tree Management
Texas
FBT
841
First Bank & Trust
South Dakota
Group One Trading
842
Group One Trading
Illinois
MWM
843
Maridea Wealth Management
New York
DILIC
844
Dai-ichi Life Insurance Company
Japan
MMEA
845
Main Management ETF Advisors
California
LOAMS
846
Lombard Odier Asset Management (Switzerland)
Switzerland
EMPI
847
Elo Mutual Pension Insurance
Finland
Verition Fund Management
848
Verition Fund Management
Connecticut
KAS
849
Kestra Advisory Services
Texas
SLI
850
Sumitomo Life Insurance
Japan