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CoStar Group

871 hedge funds and large institutions have $34.2B invested in CoStar Group in 2025 Q2 according to their latest regulatory filings, with 99 funds opening new positions, 354 increasing their positions, 317 reducing their positions, and 75 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
871
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
$889K
477
$880K
478
$878K
479
$876K
480
$859K
481
$844K
482
$834K
483
$821K
484
$789K
485
$784K
486
$771K
487
$770K
488
$765K
489
$764K
490
$758K
491
$756K
492
$754K
493
$752K
494
$748K
495
$742K
496
$739K
497
$732K
498
$724K
499
$720K
500
$719K