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CoStar Group

791 hedge funds and large institutions have $16.4B invested in CoStar Group in 2026 Q1 according to their latest regulatory filings, with 125 funds opening new positions, 307 increasing their positions, 276 reducing their positions, and 164 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: 125 | Existing positions closed: 164

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
791
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
EPW
551
Evolve Private Wealth
California
$241K
SFI
552
Siemens Fonds Invest
Germany
$240K
HCM
553
Hengehold Capital Management
Ohio
$239K
PCM
554
Penserra Capital Management
California
$236K
SC
555
Syon Capital
California
$234K
FCP
556
Fidelis Capital Partners
Florida
$233K
Nomura Holdings
557
Nomura Holdings
Japan
$231K
GAM
558
Groupama Asset Management
France
$230K
FTWA
559
Fifth Third Wealth Advisors
Ohio
$227K
SC
560
Sapient Capital
Indiana
$223K
FISPB
561
Fideuram - Intesa Sanpaolo Private Banking
$222K
MGWM
562
Marks Group Wealth Management
Minnesota
$220K
FRM
563
Fox Run Management
Connecticut
$219K
AFT
564
Alpha Family Trust
California
$218K
MAM
565
Meeder Asset Management
Ohio
$218K
IIC
566
Integrated Investment Consultants
Michigan
$212K
PM
567
Pembroke Management
Quebec, Canada
$211K
WAG
568
Wallace Advisory Group
California
$209K
MFS
569
Mirabella Financial Services
United Kingdom
$205K
CCA
570
Checchi Capital Advisers
California
$204K
CCP
571
Caden Capital Partners
California
$194K
EA
572
Emerald Advisers
Pennsylvania
$194K
HFS
573
Hantz Financial Services
Michigan
$193K
OAM
574
Ostrum Asset Management
France
$192K
LSA
575
Leonteq Securities AG
Switzerland
$191K