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CoStar Group

871 hedge funds and large institutions have $34.2B invested in CoStar Group in 2025 Q2 according to their latest regulatory filings, with 99 funds opening new positions, 354 increasing their positions, 317 reducing their positions, and 75 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
871
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
676
$166K
677
$162K
678
$161K
679
$157K
680
$150K
681
$149K
682
$148K
683
$146K
684
$142K
685
$134K
686
$128K
687
$126K
688
$126K
689
$120K
690
$117K
691
$115K
692
$112K
693
$104K
694
$101K
695
$99.9K
696
$99.1K
697
$97K
698
$96.7K
699
$93.5K
700
$90.9K