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CoStar Group

867 hedge funds and large institutions have $34.2B invested in CoStar Group in 2025 Q2 according to their latest regulatory filings, with 98 funds opening new positions, 352 increasing their positions, 316 reducing their positions, and 75 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
867
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
26
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$180M
Puts
$97.5M
Net Calls
Net Calls Change

Top Buyers

1 +$310M
2 +$251M
3 +$111M
4
TP
Third Point
New York
+$86.5M
5
IAM
Ion Asset Management
Israel
+$80.2M
Name Holding Trade Value Shares
Change
Change in
Stake
851
$482
852
$402
853
$402
854
$328
855
$322
856
$322
857
$322
858
$322
859
$242
860
$242
861
$242
862
$161
863
$161
864
$80
865
$80
866
$80
867
$80
868
$80
869
870
871
872
873
874
875