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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
526
$550K
527
$549K
528
$546K
529
$544K
530
$543K
531
$536K
532
$530K
533
$519K
534
$519K
535
$519K
536
$517K
537
$511K
538
$510K
539
$507K
540
$504K
541
$503K
542
$502K
543
$496K
544
$496K
545
$490K
546
$484K
547
$480K
548
$478K
549
$477K
550
$476K