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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
626
$268K
627
$266K
628
$266K
629
$265K
630
$264K
631
$263K
632
$261K
633
$259K
634
$258K
635
$256K
636
$254K
637
$253K
638
$252K
639
$242K
640
$242K
641
$242K
642
$242K
643
$241K
644
$241K
645
$237K
646
$235K
647
$232K
648
$230K
649
$228K
650
$228K