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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
501
$717K
502
$688K
503
$675K
504
$673K
505
$673K
506
$659K
507
$656K
508
$644K
509
$634K
510
$626K
511
$624K
512
$616K
513
$614K
514
$602K
515
$599K
516
$593K
517
$593K
518
$587K
519
$576K
520
$575K
521
$566K
522
$564K
523
$560K
524
$559K
525
$553K