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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
551
$476K
552
$475K
553
$474K
554
$471K
555
$467K
556
$464K
557
$464K
558
$463K
559
$462K
560
$457K
561
$452K
562
$434K
563
$432K
564
$431K
565
$431K
566
$429K
567
$426K
568
$426K
569
$425K
570
$420K
571
$415K
572
$413K
573
$412K
574
$405K
575
$395K