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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

262% more call options, than puts

Call options by funds: $142M | Put options by funds: $39.3M

11% more repeat investments, than reductions

Existing positions increased: 307 | Existing positions reduced: 276

0.54% less ownership

Funds ownership: 97.52%96.98% (-0.54%)

7% less funds holding

Funds holding: 846791 (-55)

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
-55
Holders Change %
-6.5%
% of All Funds
9.74%
Holding in Top 10
7
Holding in Top 10 Change
-10
Holding in Top 10 Change %
-58.82%
% of All Funds
0.09%
New
125
Increased
307
Reduced
276
Closed
164
Calls
$142M
Puts
$39.3M
Net Calls
+$103M
Net Calls Change
+$7.38M
Name Holding Trade Value Shares
Change
Change in
Stake
HIA
576
Harbor Investment Advisory
Maryland
$173K -$97.9K -1,880 -30%
PFBT
577
Parkside Financial Bank & Trust
Missouri
$172K -$15.8K -304 -7%
ASN
578
Advisory Services Network
Georgia
$170K +$219K +4,202 New
CPCPP
579
Canada Post Corporation Pension Plan
Canada
$168K -$521K -10,000 -71%
MCM
580
MAI Capital Management
Ohio
$160K +$68.4K +1,313 +49%
AF
581
Allworth Financial
California
$143K +$6.66K +128 +4%
SAM
582
Smartleaf Asset Management
Massachusetts
$141K -$176K -3,387 -50%
BAMF
583
BI Asset Management Fondsmaeglerselskab
Denmark
$139K -$756K -14,529 -81%
GAM
584
Generali Asset Management
Italy
$130K -$1.25M -23,959 -88%
QL
585
Quarry LP
New York
$129K +$118K +2,262 +240%
S
586
SignatureFD
Georgia
$120K -$10.1K -194 -6%
TFIPS
587
Towarzystwo Funduszy Inwestycyjnych PZU SA
$117K +$31.2K +600 +26%
EWA
588
EverSource Wealth Advisors
Alabama
$110K +$53.4K +1,026 +61%
AGA
589
Arkos Global Advisors
Texas
$107K +$138K +2,660 New
FFA
590
Farther Finance Advisors
California
$101K +$30.2K +580 +29%
OP
591
Oslo Pensjonsforsikring
$93.1K +$120K +2,309 New
WBC
592
Westpac Banking Corp
Australia
$93K
MG
593
Mather Group
Illinois
$87.5K +$113K +2,170 New
LS
594
Livforsakringsbolaget Skandia
Sweden
$84.6K
MPWT
595
MassMutual Private Wealth & Trust
Connecticut
$83.8K +$15.5K +298 +17%
CA
596
Clearstead Advisors
Ohio
$79.2K -$8.25M -158,549 -99%
Los Angeles Capital Management
597
Los Angeles Capital Management
California
$78.5K -$3.51M -67,417 -97%
WT
598
Whittier Trust
California
$72.1K
DAM
599
Delta Asset Management
Tennessee
$71K
FC
600
Financial Consulate
Maryland
$70K -$84.6K -1,626 -48%