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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
426
$1.44M
427
$1.43M
428
$1.4M
429
$1.38M
430
$1.37M
431
$1.37M
432
$1.36M
433
$1.35M
434
$1.33M
435
$1.32M
436
$1.31M
437
$1.3M
438
$1.3M
439
$1.3M
440
$1.28M
441
$1.22M
442
$1.21M
443
$1.21M
444
$1.21M
445
$1.2M
446
$1.2M
447
$1.18M
448
$1.17M
449
$1.17M
450
$1.16M