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CoStar Group

786 hedge funds and large institutions have $16.4B invested in CoStar Group in 2026 Q1 according to their latest regulatory filings, with 126 funds opening new positions, 306 increasing their positions, 272 reducing their positions, and 166 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less ownership

Funds ownership:

less funds holding

Funds holding:

24% less first-time investments, than exits

New positions opened: 126 | Existing positions closed: 166

41% less capital invested

Capital invested by funds: $27.8B → $16.4B (-$11.3B)

59% less funds holding in top 10

Funds holding in top 10: 177 (-10)

Holders
786
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
7
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$142M
Puts
$39.3M
Net Calls
Net Calls Change

Top Sellers

1 -$302M
2 -$233M
3 -$216M
4
TP
Third Point
New York
-$213M
5
BAMCO Inc
BAMCO Inc
New York
-$166M
Name Holding Trade Value Shares
Change
Change in
Stake
WWM
351
Waterway Wealth Management
Texas
$1.12M
GCP
352
GSA Capital Partners
United Kingdom
$1.09M
TSW
353
Three Seasons Wealth
Utah
$1.07M
EI
354
Ethic Inc
New York
$1.07M
HA
355
Harbor Advisors
Florida
$1.07M
Janney Montgomery Scott
356
Janney Montgomery Scott
Pennsylvania
$1.07M
PP
357
Prudential plc
United Kingdom
$1.05M
PEAK6
358
PEAK6
Illinois
$1.05M
MSU
359
Mizuho Securities USA
New York
$1.03M
GWM
360
Gibbs Wealth Management
Georgia
$1.03M
TI
361
Tidal Investments
Wisconsin
$999K
ECM
362
ExodusPoint Capital Management
New York
$988K
HIMCH
363
Hartford Investment Management Co (HIMCO)
Connecticut
$980K
STA
364
Summit Trail Advisors
New York
$959K
AA
365
ALPS Advisors
Colorado
$954K
CGH
366
Crossmark Global Holdings
Texas
$945K
KeyBank National Association
367
KeyBank National Association
Ohio
$935K
TVPW
368
Third View Private Wealth
Connecticut
$916K
AIM
369
Aurora Investment Managers
Florida
$895K
DEA
370
DoubleLine ETF Adviser
Florida
$891K
AV
371
ASR Vermogensbeheer
Netherlands
$885K
IP
372
Intellectus Partners
California
$879K
OAC
373
OMERS Administration Corp
Ontario, Canada
$872K
CS
374
Candriam SCA
Luxembourg
$868K
GCM
375
Graham Capital Management
Connecticut
$862K