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CoStar Group

787 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, 306 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
787
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
NIG
826
NFJ Investment Group
Texas
OC
827
Oppenheimer & Co
New York
SSA
828
Schonfeld Strategic Advisors
New York
KC
829
Katamaran Capital
United Kingdom
BWG
830
Boomfish Wealth Group
Georgia
AC
831
Allstate Corporation
Illinois
DGM
832
Delta Global Management
New York
GIA
833
Gateway Investment Advisers
Ohio
ALMGDA
834
AG2R La Mondiale Gestion d'Actifs
France
KRS
835
Kentucky Retirement Systems
Kentucky
VIA
836
Virtus Investment Advisers
Connecticut
Twin Tree Management
837
Twin Tree Management
Texas
FBT
838
First Bank & Trust
South Dakota
Group One Trading
839
Group One Trading
Illinois
MWM
840
Maridea Wealth Management
New York
DILIC
841
Dai-ichi Life Insurance Company
Japan
MMEA
842
Main Management ETF Advisors
California
LOAMS
843
Lombard Odier Asset Management (Switzerland)
Switzerland
EMPI
844
Elo Mutual Pension Insurance
Finland
Verition Fund Management
845
Verition Fund Management
Connecticut
KAS
846
Kestra Advisory Services
Texas
SLI
847
Sumitomo Life Insurance
Japan
HCM
848
Howard Capital Management
Georgia
TCWA
849
Turtle Creek Wealth Advisors
Texas
VT
850
Volterra Technologies
New York