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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
51
$107M
52
$104M
53
$103M
54
$103M
55
$103M
56
$102M
57
$99M
58
$97.7M
59
$96.1M
60
$94.2M
61
$94.1M
62
$87M
63
$86.7M
64
$82.1M
65
$79.6M
66
$77.5M
67
$75.6M
68
$74.5M
69
$74M
70
$73.7M
71
$73.6M
72
$66.9M
73
$65.1M
74
$64.6M
75
$64M