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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
601
$331K
602
$326K
603
$323K
604
$323K
605
$322K
606
$317K
607
$308K
608
$308K
609
$308K
610
$308K
611
$307K
612
$307K
613
$305K
614
$302K
615
$301K
616
$294K
617
$292K
618
$292K
619
$283K
620
$283K
621
$280K
622
$278K
623
$277K
624
$274K
625
$269K