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CoStar Group

853 hedge funds and large institutions have $33.5B invested in CoStar Group in 2025 Q1 according to their latest regulatory filings, with 139 funds opening new positions, 376 increasing their positions, 261 reducing their positions, and 75 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
853
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
23
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$337M
Puts
$119M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
451
$953K
452
$946K
453
$942K
454
$924K
455
$921K
456
$911K
457
$906K
458
$901K
459
$900K
460
$875K
461
$868K
462
$866K
463
$861K
464
$850K
465
$848K
466
$847K
467
$840K
468
$830K
469
$828K
470
$827K
471
$807K
472
$803K
473
$798K
474
$798K
475
$796K