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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
HIA
576
Harbor Investment Advisory
Maryland
$173K
PFBT
577
Parkside Financial Bank & Trust
Missouri
$172K
ASN
578
Advisory Services Network
Georgia
$170K
CPCPP
579
Canada Post Corporation Pension Plan
Canada
$168K
MCM
580
MAI Capital Management
Ohio
$160K
AF
581
Allworth Financial
California
$143K
SAM
582
Smartleaf Asset Management
Massachusetts
$141K
BAMF
583
BI Asset Management Fondsmaeglerselskab
Denmark
$139K
GAM
584
Generali Asset Management
Italy
$130K
QL
585
Quarry LP
New York
$129K
S
586
SignatureFD
Georgia
$120K
TFIPS
587
Towarzystwo Funduszy Inwestycyjnych PZU SA
$117K
EWA
588
EverSource Wealth Advisors
Alabama
$110K
AGA
589
Arkos Global Advisors
Texas
$107K
FFA
590
Farther Finance Advisors
California
$101K
OP
591
Oslo Pensjonsforsikring
$93.1K
WBC
592
Westpac Banking Corp
Australia
$93K
MG
593
Mather Group
Illinois
$87.5K
LS
594
Livforsakringsbolaget Skandia
Sweden
$84.6K
MPWT
595
MassMutual Private Wealth & Trust
Connecticut
$83.8K
CA
596
Clearstead Advisors
Ohio
$79.2K
Los Angeles Capital Management
597
Los Angeles Capital Management
California
$78.5K
WT
598
Whittier Trust
California
$72.1K
DAM
599
Delta Asset Management
Tennessee
$71K
FC
600
Financial Consulate
Maryland
$70K