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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
RBI
651
Raiffeisen Bank International
Austria
$12.1K
AT
652
Avalon Trust
New Mexico
$12K
SS
653
SBI Securities
Japan
$11.7K
CCA
654
Catalyst Capital Advisors
New York
$11.3K
JFGIW
655
Johnson Financial Group Inc (Wisconsin)
Wisconsin
$10.7K
ME
656
McIlrath & Eck
Washington
$10.4K
BTI
657
Blue Trust Inc
Georgia
$10K
CCM
658
Chilton Capital Management
Texas
$9.88K
AA
659
Ancora Advisors
Ohio
$9.84K
SC
660
SouthState Corp
Florida
$9.44K
RFP
661
Root Financial Partners
California
$9.32K
JFA
662
JNBA Financial Advisors
Minnesota
$8.96K
WA
663
WPG Advisers
Maryland
$8.91K
CPG
664
Cornerstone Planning Group
New Jersey
$8.76K
BFP
665
Birchwood Financial Partners
Minnesota
$8.75K
CAL
666
Capital Advisors Ltd
Ohio
$8K
SC
667
Stance Capital
Massachusetts
$7.98K
FCAS
668
First Command Advisory Services
Texas
$7.54K
WA
669
Westfuller Advisors
New York
$7.5K
GSEP
670
Golden State Equity Partners
California
$7.42K
WSFG
671
Wall Street Financial Group
Illinois
$7.22K
WWM
672
Western Wealth Management
Colorado
$7.14K
DJSG
673
D.J. St. Germain
Massachusetts
$7.1K
CT
674
Clearstead Trust
Maine
$7.02K
C
675
Covestor
United Kingdom
$7K