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CoStar Group

902 hedge funds and large institutions have $34.9B invested in CoStar Group in 2025 Q3 according to their latest regulatory filings, with 108 funds opening new positions, 360 increasing their positions, 314 reducing their positions, and 63 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more first-time investments, than exits

New positions opened: | Existing positions closed:

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more funds holding

Funds holding:

2% more capital invested

Capital invested by funds: $34.2B → $34.9B (+$697M)

3.07% less ownership

Funds ownership: 100.68%97.61% (-3.1%)

4% less funds holding in top 10

Funds holding in top 10: 2625 (-1)

Holders
902
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
25
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$199M
Puts
$81.5M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
26
$274M
27
$264M
28
$255M
29
$254M
30
$228M
31
$224M
32
$208M
33
$208M
34
$206M
35
$189M
36
$185M
37
$184M
38
$183M
39
$177M
40
$162M
41
$156M
42
$156M
43
$154M
44
$146M
45
$145M
46
$144M
47
$140M
48
$139M
49
$133M
50
$123M