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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
PWPS
651
Pinnacle Wealth Planning Services
Ohio
$12.5K
PB
652
Prosperity Bancshares
Texas
$12.5K
BF
653
BOK Financial
Oklahoma
$12.2K
MA
654
Montag & Associates
Georgia
$12.1K
RBI
655
Raiffeisen Bank International
Austria
$12.1K
AT
656
Avalon Trust
New Mexico
$12K
SS
657
SBI Securities
Japan
$11.7K
CCA
658
Catalyst Capital Advisors
New York
$11.3K
JFGIW
659
Johnson Financial Group Inc (Wisconsin)
Wisconsin
$10.7K
ME
660
McIlrath & Eck
Washington
$10.4K
BWA
661
Basecamp Wealth Advisors
Washington
$10.4K
BTI
662
Blue Trust Inc
Georgia
$10K
CCM
663
Chilton Capital Management
Texas
$9.88K
AA
664
Ancora Advisors
Ohio
$9.84K
SC
665
SouthState Corp
Florida
$9.44K
RFP
666
Root Financial Partners
California
$9.32K
JFA
667
JNBA Financial Advisors
Minnesota
$8.96K
WA
668
WPG Advisers
Maryland
$8.91K
CPG
669
Cornerstone Planning Group
New Jersey
$8.76K
BFP
670
Birchwood Financial Partners
Minnesota
$8.75K
CAL
671
Capital Advisors Ltd
Ohio
$8K
SC
672
Stance Capital
Massachusetts
$7.98K
FCAS
673
First Command Advisory Services
Texas
$7.54K
WA
674
Westfuller Advisors
New York
$7.5K
GSEP
675
Golden State Equity Partners
California
$7.42K