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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
601
$335K
602
$332K
603
$331K
604
$331K
605
$326K
606
$323K
607
$323K
608
$322K
609
$317K
610
$308K
611
$308K
612
$308K
613
$308K
614
$307K
615
$307K
616
$305K
617
$302K
618
$301K
619
$294K
620
$292K
621
$292K
622
$283K
623
$283K
624
$280K
625
$278K