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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
301
$3.62M
302
$3.61M
303
$3.54M
304
$3.51M
305
$3.48M
306
$3.47M
307
$3.37M
308
$3.33M
309
$3.33M
310
$3.31M
311
$3.28M
312
$3.27M
313
$3.24M
314
$3.24M
315
$3.2M
316
$3.15M
317
$3.13M
318
$3.03M
319
$3.02M
320
$2.97M
321
$2.97M
322
$2.93M
323
$2.92M
324
$2.92M
325
$2.91M