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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
HCM
551
Hengehold Capital Management
Ohio
$239K
PCM
552
Penserra Capital Management
California
$236K
SC
553
Syon Capital
California
$234K
FCP
554
Fidelis Capital Partners
Florida
$233K
Nomura Holdings
555
Nomura Holdings
Japan
$231K
GAM
556
Groupama Asset Management
France
$230K
FTWA
557
Fifth Third Wealth Advisors
Ohio
$227K
SC
558
Sapient Capital
Indiana
$223K
FISPB
559
Fideuram - Intesa Sanpaolo Private Banking
$222K
MGWM
560
Marks Group Wealth Management
Minnesota
$220K
FRM
561
Fox Run Management
Connecticut
$219K
AFT
562
Alpha Family Trust
California
$218K
MAM
563
Meeder Asset Management
Ohio
$218K
PM
564
Pembroke Management
Quebec, Canada
$211K
WAG
565
Wallace Advisory Group
California
$209K
MFS
566
Mirabella Financial Services
United Kingdom
$205K
CCA
567
Checchi Capital Advisers
California
$204K
CCP
568
Caden Capital Partners
California
$194K
EA
569
Emerald Advisers
Pennsylvania
$194K
HFS
570
Hantz Financial Services
Michigan
$193K
OAM
571
Ostrum Asset Management
France
$192K
LSA
572
Leonteq Securities AG
Switzerland
$191K
HIA
573
Harbor Investment Advisory
Maryland
$173K
PFBT
574
Parkside Financial Bank & Trust
Missouri
$172K
ASN
575
Advisory Services Network
Georgia
$170K