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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
501
$675K
502
$673K
503
$673K
504
$659K
505
$656K
506
$644K
507
$634K
508
$626K
509
$624K
510
$616K
511
$614K
512
$602K
513
$599K
514
$593K
515
$593K
516
$587K
517
$576K
518
$575K
519
$566K
520
$564K
521
$560K
522
$559K
523
$553K
524
$550K
525
$549K