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CoStar Group

867 hedge funds and large institutions have $34.2B invested in CoStar Group in 2025 Q2 according to their latest regulatory filings, with 98 funds opening new positions, 352 increasing their positions, 316 reducing their positions, and 75 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
867
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
476
$878K
477
$876K
478
$859K
479
$844K
480
$834K
481
$821K
482
$789K
483
$784K
484
$771K
485
$770K
486
$765K
487
$764K
488
$758K
489
$756K
490
$754K
491
$752K
492
$748K
493
$742K
494
$739K
495
$732K
496
$724K
497
$720K
498
$719K
499
$717K
500
$688K