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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
576
$392K
577
$389K
578
$385K
579
$385K
580
$377K
581
$375K
582
$375K
583
$370K
584
$366K
585
$366K
586
$366K
587
$364K
588
$358K
589
$357K
590
$356K
591
$356K
592
$354K
593
$352K
594
$350K
595
$350K
596
$348K
597
$347K
598
$343K
599
$341K
600
$338K