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CoStar Group

903 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, 361 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 (+$698M)

3.07% less ownership

Funds ownership: 100.7%97.63% (-3.1%)

4% less funds holding in top 10

Funds holding in top 10: 2625 (-1)

Holders
903
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
526
$691K
527
$684K
528
$684K
529
$676K
530
$663K
531
$652K
532
$638K
533
$637K
534
$636K
535
$631K
536
$630K
537
$629K
538
$622K
539
$616K
540
$616K
541
$604K
542
$600K
543
$598K
544
$598K
545
$593K
546
$588K
547
$585K
548
$578K
549
$573K
550
$570K